(19)
(11)EP 3 312 458 B1

(12)EUROPEAN PATENT SPECIFICATION

(45)Mention of the grant of the patent:
26.01.2022 Bulletin 2022/04

(21)Application number: 17191370.0

(22)Date of filing:  15.09.2017
(51)International Patent Classification (IPC): 
F16H 3/66(2006.01)
(52)Cooperative Patent Classification (CPC):
F16H 2200/2046; F16H 3/66; F16H 2200/0065; F16H 2200/2012; F16H 2200/0069

(54)

MULTI-SPEED PLANETARY TRANSMISSION

PLANETENGETRIEBE MIT MEHREREN DREHZAHLEN

TRANSMISSION PLANÉTAIRE À PLUSIEURS VITESSES


(84)Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30)Priority: 28.09.2016 US 201615278951

(43)Date of publication of application:
25.04.2018 Bulletin 2018/17

(73)Proprietor: Allison Transmission, Inc.
Indianapolis, IN 46222-3271 (US)

(72)Inventors:
  • RASZKOWSKI, James
    Indianapolis, Indiana 46234 (US)
  • IRVING, Mitchell
    Danville, Indiana 46122 (US)
  • CRAFTON, Drew A.
    Mooresville, Indiana (US)

(74)Representative: Banzer, Hans-Jörg 
Kraus & Weisert Patentanwälte PartGmbB Thomas-Wimmer-Ring 15
80539 München
80539 München (DE)


(56)References cited: : 
US-A1- 2009 192 011
  
  • Thomas Belz: "Varianten von Mehrgang-Planetengetrieben", , 8 March 2016 (2016-03-08), XP055257458, Retrieved from the Internet: URL:https://register.epo.org/application?d ocumentId=EYPWMGE67270DSU&appnumber=EP1375 6488&showPdfPage=all [retrieved on 2016-03-11]
  
Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).


Description

FIELD OF THE INVENTION



[0001] The present invention relates to a multi-speed transmission and in particular to a multi-speed transmission including a plurality of planetary gearsets and a plurality of selective couplers to achieve at least nine forward speed ratios and at least one reverse speed ratio.

BACKGROUND OF THE INVENTION



[0002] Multi-speed transmissions use a plurality of planetary gearsets, selective couplers, interconnectors, and additional elements to achieve a plurality of forward and reverse speed ratios. Exemplary multi-speed transmissions are disclosed in US 2016/0047440 A1. In addition, a transmission according to the preamble of claim 1 is known from US 2009/0192011 A1.

SUMMARY



[0003] According to the present invention, a transmission as defined in claim 1 is provided. The dependent claims define preferred and/or advantageous embodiments of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS



[0004] The above-mentioned and other features and advantages of this invention, and the manner of attaining them, will become more apparent and will be better understood by reference to the following description of exemplary embodiments taken in conjunction with the accompanying drawings, wherein:

FIG. 1 is a diagrammatic view of an exemplary multi-speed transmission including four planetary gearsets and six selective couplers;

FIG. 2 is a truth table illustrating the selective engagement of the six selective couplers of FIG. 1 to provide ten forward gear or speed ratios and a reverse gear or speed ratio of the multi-speed transmission of FIG. 1;

FIG. 3 is a diagrammatic view of another exemplary multi-speed transmission including four planetary gearsets and six selective couplers; and

FIG. 4 is a truth table illustrating the selective engagement of the six selective couplers of FIG. 3 to provide nine forward gear or speed ratios and a reverse gear or speed ratio of the multi-speed transmission of FIG. 3.



[0005] Corresponding reference characters indicate corresponding parts throughout the several views. The exemplifications set out herein illustrate exemplary embodiments of the invention and such exemplifications are not to be construed as limiting the scope of the invention in any manner.

DETAILED DESCRIPTION



[0006] For the purposes of promoting an understanding of the principles of the present invention, reference is now made to the embodiments illustrated in the drawings, which are described below. The embodiments disclosed below are not intended to be exhaustive or limit the present invention to the precise form disclosed in the following detailed description. Rather, the embodiments are chosen and described so that others skilled in the art may utilize their teachings. Therefore, no limitation of the scope of the present invention is thereby intended. Corresponding reference characters indicate corresponding parts throughout the several views.

[0007] In the disclosed transmission embodiments, selective couplers are disclosed. A selective coupler is a device which may be actuated to fixedly couple two or more components together. A selective coupler fixedly couples two or more components to rotate together as a unit when the selective coupler is in an engaged configuration. Further, the two or more components may be rotatable relative to each other when the selective coupler is in a disengaged configuration. The terms "couples", "coupled", "coupler" and variations thereof are used to include both arrangements wherein the two or more components are in direct physical contact and arrangements wherein the two or more components are not in direct contact with each other (e.g., the components are "coupled" via at least a third component), but yet still cooperate or interact with each other.

[0008] A first exemplary selective coupler is a clutch. A clutch couples two or more rotating components to one another so that the two or more rotating components rotate together as a unit in an engaged configuration and permits relative rotation between the two or more rotating components in the disengaged position. Exemplary clutches may be shiftable friction-locked multi-disk clutches, shiftable form-locking claw or conical clutches, wet clutches, or any other known form of a clutch.

[0009] A second exemplary selective coupler is a brake. A brake couples one or more rotatable components to a stationary component to hold the one or more rotatable components stationary relative to the stationary component in the engaged configuration and permits rotation of the one or more components relative to the stationary component in the disengaged configuration. Exemplary brakes may be configured as shiftable-friction-locked disk brakes, shiftable friction-locked band brakes, shiftable form-locking claw or conical brakes, or any other known form of a brake.

[0010] Selective couplers may be actively controlled devices or passive devices. Exemplary actively controlled devices include hydraulically actuated clutch or brake elements and electrically actuated clutch or brake elements. Additional details regarding systems and methods for controlling selective couplers are disclosed in the above-mentioned US Published Patent Application No. 2016/0047440 A1.

[0011] In addition to coupling through selective couplers, various components of the disclosed transmission embodiments may be fixedly coupled together continuously throughout the operation of the disclosed transmissions. Components may be fixedly coupled together either permanently or removably. Components may be fixedly coupled together through spline connections, press fitting, fasteners, welding, machined or formed functional portions of a unitary piece, or other suitable methods of connecting components.

[0012] The disclosed transmission embodiments include a plurality of planetary gearsets. Each planetary gearset includes at least four components: a sun gear; a ring gear; a plurality of planet gears; and a carrier that is rotatably coupled to and carries the planet gears. In the case of a simple planetary gearset, the teeth of the sun gear are intermeshed with the teeth of the planet gears which are in turn intermeshed with the teeth of the ring gear. Each of these components may also be referred to as a gearset component. It will be apparent to one of skill in the art that some planetary gearsets may include further components than those explicitly identified. For example, one or more of the planetary gearsets may include two sets of planet gears. A first set of planet gears may intermesh with the sun gear while the second set of planet gears intermesh with the first set of planet gears and the ring gear. Both sets of planet gears are carried by the planet carrier.

[0013] One or more rotating components, such as shafts, drums, and other components, may be collectively referred to as an interconnector when the one or more components are fixedly coupled together. Interconnectors may further be fixedly coupled to one or more gearset components and/or one or more selective couplers.

[0014] An input member of the disclosed transmission embodiments is rotated by a prime mover. Exemplary prime movers include internal combustion engines, electric motors, hybrid power systems, and other suitable power systems. In one embodiment, the prime mover indirectly rotates the input member through a clutch and/or a torque converter. An output member of the disclosed transmission embodiments provides rotational power to one or more working components. Exemplary working components include one or more drive wheels of a motor vehicle, a power take-off shaft, and other suitable devices. The output member is rotated based on the interconnections of the gearset components and the selective couplers of the transmission. By changing the interconnections of the gearset components and the selective couplers, a rotation speed of the output member may be varied from a rotation speed of the input member.

[0015] The disclosed transmission embodiments are capable of transferring torque from the input member to the output member and rotating the output member in at least nine forward gear or speed ratios relative to the input member and at least one reverse gear or speed ratio wherein the rotation direction of the output member is reversed relative to its rotation direction for the at least nine forward ratios. Exemplary gear ratios that may be obtained using the embodiments of the present invention are disclosed herein. Of course, other gear ratios are achievable depending on the characteristics of the gearsets utilized. Exemplary characteristics include respective gear diameters, the number of gear teeth, and the configurations of the various gears.

[0016] FIG. 1 is a diagrammatic representation of a multi-speed transmission 100. Multi-speed transmission 100 includes an input member 102 and an output member 104. Each of input member 102 and output member 104 is rotatable relative to at least one stationary member 106. An exemplary input member 102 is an input shaft or other suitable rotatable component. An exemplary output member 104 is an output shaft or other suitable rotatable component. An exemplary stationary member 106 is a housing of multi-speed transmission 100. The housing may include several components coupled together.

[0017] Multi-speed transmission 100 includes a plurality of planetary gearsets, illustratively a first planetary gearset 108, a second planetary gearset 110, a third planetary gearset 112, and a fourth planetary gearset 114. In one embodiment, additional planetary gearsets may be included. Further, although first planetary gearset 108, second planetary gearset 110, third planetary gearset 112, and fourth planetary gearset 114 are illustrated as simple planetary gearsets, it is contemplated that compound planetary gearsets may be included in some embodiments.

[0018] In one embodiment, multi-speed transmission 100 is arranged as illustrated in FIG. 1, with first planetary gearset 108 positioned between a first location or end 116 at which input member 102 enters stationary member 106 and second planetary gearset 110, second planetary gearset 110 is positioned between first planetary gearset 108 and third planetary gearset 112, third planetary gearset 112 is positioned between second planetary gearset 110 and fourth planetary gearset 114, and fourth planetary gearset 114 is positioned between third planetary gearset 112 and a second location or end 118 at which output member 104 exits stationary member 106. In alternative embodiments, first planetary gearset 108, second planetary gearset 110, third planetary gearset 112, and fourth planetary gearset 114 are arranged in any order relative to location 116 and location 118. In the illustrated embodiment of FIG. 1, each of first planetary gearset 108, second planetary gearset 110, third planetary gearset 112, and fourth planetary gearset 114 are axially aligned. In one example, input member 102 and output member 104 are also axially aligned with first planetary gearset 108, second planetary gearset 110, third planetary gearset 112, and fourth planetary gearset 114. In alternative embodiments, one or more of input member 102, output member 104, first planetary gearset 108, second planetary gearset 110, third planetary gearset 112, and fourth planetary gearset 114 are offset and not axially aligned with the remainder.

[0019] First planetary gearset 108 includes a sun gear 120, a planet carrier 122 supporting a plurality of planet gears 124, and a ring gear 126. Second planetary gearset 110 includes a sun gear 130, a planet carrier 132 supporting a plurality of planet gears 134, and a ring gear 136. Third planetary gearset 112 includes a sun gear 140, a planet carrier 142 supporting a plurality of planet gears 144, and a ring gear 146. Fourth planetary gearset 114 includes a sun gear 150, a planet carrier 152 supporting a plurality of planet gears 154, and a ring gear 156.

[0020] Multi-speed transmission 100 further includes a plurality of selective couplers, illustratively a first selective coupler 162, a second selective coupler 164, a third selective coupler 166, a fourth selective coupler 168, a fifth selective coupler 170, and a sixth selective coupler 172. In the illustrated embodiment, first selective coupler 162 and second selective coupler 164 are brakes and third selective coupler 166, fourth selective coupler 168, fifth selective coupler 170, and sixth selective coupler 172 are clutches. The axial locations of the clutches and brakes relative to the plurality of planetary gearsets may be altered from the illustrated axial locations.

[0021] Multi-speed transmission 100 includes several components that are illustratively shown as being fixedly coupled together. Input member 102 is fixedly coupled to sun gear 120 of first planetary gearset 108, sun gear 150 of fourth planetary gearset 114, and third selective coupler 166. Output member 104 is fixedly coupled to planet carrier 152 of fourth planetary gearset 114 and ring gear 146 of third planetary gearset 112. Ring gear 126 of first planetary gearset 108 and planet carrier 132 of second planetary gearset 110 are fixedly coupled together. Ring gear 136 of second planetary gearset 110, sun gear 140 of third planetary gearset 112, and fourth selective coupler 168 are fixedly coupled together. Ring gear 156 of fourth planetary gearset 114 is fixedly coupled to fifth selective coupler 170. Planet carrier 122 of first planetary gearset 108, first selective coupler 162, and fourth selective coupler 168 are fixedly coupled together. Planet carrier 142 of third planetary gearset 112, third selective coupler 166, fifth selective coupler 170, and sixth selective coupler 172 are fixedly coupled together. Sun gear 130 of second planetary gearset 110, second selective coupler 164, and sixth selective coupler 172 are fixedly coupled together.

[0022] Multi-speed transmission 100 may be described as having eight interconnectors. Input member 102 is a first interconnector that both provides input torque to multi-speed transmission 100 and fixedly couples sun gear 120 of first planetary gearset 108, sun gear 150 of fourth planetary gearset 114, and third selective coupler 166 together. Output member 104 is a second interconnector that both provides output torque from multi-speed transmission 100 and fixedly couples ring gear 146 of third planetary gearset 112 to planet carrier 152 of fourth planetary gearset 114. A third interconnector 180 fixedly couples ring gear 126 of first planetary gearset 108 and planet carrier 132 of second planetary gearset 110 together. A fourth interconnector 182 fixedly couples ring gear 136 of second planetary gearset 110, sun gear 140 of third planetary gearset 112, and fourth selective coupler 168 together. A fifth interconnector 184 fixedly couples ring gear 156 of fourth planetary gearset 114 to fifth selective coupler 170. A sixth interconnector 186 fixedly couples planet carrier 122 of first planetary gearset 108, first selective coupler 162, and fourth selective coupler 168 together. A seventh interconnector 188 fixedly couples planet carrier 142 of third planetary gearset 112, third selective coupler 166, fifth selective coupler 170, and sixth selective coupler 172 together. An eighth interconnector 190 fixedly couples sun gear 130 of second planetary gearset 110, second selective coupler 164, and sixth selective coupler 172 together.

[0023] In one embodiment, first planetary gearset 108 and second planetary gearset 110 are a first subset of first planetary gearset 108, second planetary gearset 110, third planetary gearset 112, and fourth planetary gearset 114 and third planetary gearset 112 and fourth planetary gearset 114 are a second subset of first planetary gearset 108, second planetary gearset 110, third planetary gearset 112, and fourth planetary gearset 114. Fourth interconnector 182 fixedly couples the first subset of first planetary gearset 108, second planetary gearset 110, third planetary gearset 112, and fourth planetary gearset 114 to the second subset of first planetary gearset 108, second planetary gearset 110, third planetary gearset 112, and fourth planetary gearset 114. In the illustrated embodiment of transmission 100, fourth interconnector 182 fixedly couples ring gear 136 of second planetary gearset 110 to sun gear 140 of third planetary gearset 112. In other embodiments, fourth interconnector 182 fixedly couples any one or more of the gearset components of the first subset of first planetary gearset 108, second planetary gearset 110, third planetary gearset 112, and fourth planetary gearset 114 to any one or more of the gearset components of the second subset of first planetary gearset 108, second planetary gearset 110, third planetary gearset 112, and fourth planetary gearset 114.

[0024] Multi-speed transmission 100 further includes several components that are illustratively shown as being selectively coupled together through selective couplers. First selective coupler 162, when engaged, fixedly couples planet carrier 122 of first planetary gearset 108 to stationary member 106. When first selective coupler 162 is disengaged, planet carrier 122 of first planetary gearset 108 may rotate relative to stationary member 106.

[0025] Second selective coupler 164, when engaged, fixedly couples sun gear 130 of second planetary gearset 110 to stationary member 106. When second selective coupler 164 is disengaged, sun gear 130 of second planetary gearset 110 may rotate relative to stationary member 106.

[0026] Third selective coupler 166, when engaged, fixedly couples planet carrier 142 of third planetary gearset 112 to sun gear 120 of first planetary gearset 108 and sun gear 150 of fourth planetary gearset 114. When third selective coupler 166 is disengaged, planet carrier 142 of third planetary gearset 112 may rotate relative to sun gear 120 of first planetary gearset 108 and sun gear 150 of fourth planetary gearset 114.

[0027] Fourth selective coupler 168, when engaged, fixedly couples planet carrier 122 of first planetary gearset 108 to ring gear 136 of second planetary gearset 110 and sun gear 140 of third planetary gearset 112. When fourth selective coupler 168 is disengaged, planet carrier 122 of first planetary gearset 108 may rotate relative to ring gear 136 of second planetary gearset 110 and sun gear 140 of third planetary gearset 112.

[0028] Fifth selective coupler 170, when engaged, fixedly couples ring gear 156 of fourth planetary gearset 114 to planet carrier 142 of third planetary gearset 112. When fifth selective coupler 170 is disengaged, ring gear 156 of fourth planetary gearset 114 may rotate relative to planet carrier 142 of third planetary gearset 112.

[0029] Sixth selective coupler 172, when engaged, fixedly couples planet carrier 142 of third planetary gearset 112 to sun gear 130 of second planetary gearset 110. When sixth selective coupler 172 is disengaged, planet carrier 142 of third planetary gearset 112 may rotate relative to sun gear 130 of second planetary gearset 110.

[0030] By engaging various combinations of first selective coupler 162, second selective coupler 164, third selective coupler 166, fourth selective coupler 168, fifth selective coupler 170, and sixth selective coupler 172, additional components of multi-speed transmission 100 may be fixedly coupled together.

[0031] The plurality of planetary gearsets and the plurality of selective couplers of multi-speed transmission 100 may be interconnected in various arrangements to provide torque from input member 102 to output member 104 in at least nine forward gear or speed ratios and one reverse gear or speed ratio. Referring to FIG. 2, an exemplary truth table 200 is shown that provides the state of each of first selective coupler 162, second selective coupler 164, third selective coupler 166, fourth selective coupler 168, fifth selective coupler 170, and sixth selective coupler 172 for ten different forward gear or speed ratios and one reverse gear or speed ratio. Each row corresponds to a given interconnection arrangement for transmission 100. The first column provides the gear range (reverse and 1st-10th forward gears). The second column provides the gear ratio between the input member 102 and the output member 104. The third column provides the gear step. The six rightmost columns illustrate which ones of the selective couplers 162-172 are engaged ("1" indicates engaged) and which ones of selective couplers 162-172 are disengaged ("(blank)" indicates disengaged). FIG. 2 is only one example of any number of truth tables possible for achieving at least nine forward ratios and one reverse ratio.

[0032] In the example of FIG. 2, the illustrated reverse ratio (Rev) is achieved by having second selective coupler 164, fourth selective coupler 168, and sixth selective coupler 172 in an engaged configuration and first selective coupler 162, third selective coupler 166, and fifth selective coupler 170 in a disengaged configuration.

[0033] In one embodiment, to place multi-speed transmission 100 in neutral (Neu), all of first selective coupler 162, second selective coupler 164, third selective coupler 166, fourth selective coupler 168, fifth selective coupler 170, and sixth selective coupler 172 are in the disengaged configuration. One or more of first selective coupler 162, second selective coupler 164, third selective coupler 166, fourth selective coupler 168, fifth selective coupler 170, and sixth selective coupler 172 may remain engaged in neutral (Neu) as long as the combination of first selective coupler 162, second selective coupler 164, third selective coupler 166, fourth selective coupler 168, fifth selective coupler 170, and sixth selective coupler 172 does not transmit torque from input member 102 to output member 104.

[0034] A first forward ratio (shown as 1st) in truth table 200 of FIG. 2 is achieved by having first selective coupler 162, second selective coupler 164, and sixth selective coupler 172 in an engaged configuration and third selective coupler 166, fourth selective coupler 168, and fifth selective coupler 170 in a disengaged configuration.

[0035] A second or subsequent forward ratio (shown as 2nd) in truth table 200 of FIG. 2 is achieved by having second selective coupler 164, fifth selective coupler 170, and sixth selective coupler 172 in an engaged configuration and first selective coupler 162, third selective coupler 166, and fourth selective coupler 168 in a disengaged configuration. Therefore, when transitioning between the first forward ratio and the second forward ratio, first selective coupler 162 is placed in the disengaged configuration and fifth selective coupler 170 is placed in the engaged configuration.

[0036] A third or subsequent forward ratio (shown as 3rd) in truth table 200 of FIG. 2 is achieved by having first selective coupler 162, second selective coupler 164, and fifth selective coupler 170 in an engaged configuration and third selective coupler 166, fourth selective coupler 168, and sixth selective coupler 172 in a disengaged configuration. Therefore, when transitioning between the second forward ratio and the third forward ratio, sixth selective coupler 172 is placed in the disengaged configuration and first selective coupler 162 is placed in the engaged configuration.

[0037] A fourth or subsequent forward ratio (shown as 4th) in truth table 200 of FIG. 2 is achieved by having first selective coupler 162, fourth selective coupler 168, and fifth selective coupler 170 in an engaged configuration and second selective coupler 164, third selective coupler 166, and sixth selective coupler 172 in a disengaged configuration. Therefore, when transitioning between the third forward ratio and the fourth forward ratio, second selective coupler 164 is placed in the disengaged configuration and fourth selective coupler 168 is placed in the engaged configuration.

[0038] A fifth or subsequent forward ratio (shown as 5th) in truth table 200 of FIG. 2 is achieved by having second selective coupler 164, fourth selective coupler 168, and fifth selective coupler 170 in an engaged configuration and first selective coupler 162, third selective coupler 166, and sixth selective coupler 172 in a disengaged configuration. Therefore, when transitioning between the fourth forward ratio and the fifth forward ratio, first selective coupler 162 is placed in the disengaged configuration and second selective coupler 164 is placed in the engaged configuration.

[0039] A sixth or subsequent forward ratio (shown as 6th) in truth table 200 of FIG. 2 is achieved by having second selective coupler 164, third selective coupler 166, and fifth selective coupler 170 in an engaged configuration and first selective coupler 162, fourth selective coupler 168, and sixth selective coupler 172 in a disengaged configuration. Therefore, when transitioning between the fifth forward ratio and the sixth forward ratio, fourth selective coupler 168 is placed in the disengaged configuration and third selective coupler 166 is placed in the engaged configuration. In the sixth forward ratio, torque is carried only by third selective coupler 166 and fifth selective coupler 170, thus second selective coupler 164 does not need to be engaged.

[0040] A seventh or subsequent forward ratio (shown as 7th) in truth table 200 of FIG. 2 is achieved by having second selective coupler 164, third selective coupler 166, and fourth selective coupler 168 in an engaged configuration and first selective coupler 162, fifth selective coupler 170, and sixth selective coupler 172 in a disengaged configuration. Therefore, when transitioning between the sixth forward ratio and the seventh forward ratio, fifth selective coupler 170 is placed in the disengaged configuration and fourth selective coupler 168 is placed in the engaged configuration.

[0041] An eighth or subsequent forward ratio (shown as 8th) in truth table 200 of FIG. 2 is achieved by having first selective coupler 162, third selective coupler 166, and fourth selective coupler 168 in an engaged configuration and second selective coupler 164, fifth selective coupler 170, and sixth selective coupler 172 in a disengaged configuration. Therefore, when transitioning between the seventh forward ratio and the eighth forward ratio, second selective coupler 164 is placed in the disengaged configuration and first selective coupler 162 is placed in the engaged configuration.

[0042] A ninth or subsequent forward ratio (shown as 9th) in truth table 200 of FIG. 2 is achieved by having first selective coupler 162, second selective coupler 164, and third selective coupler 166 in an engaged configuration and fourth selective coupler 168, fifth selective coupler 170, and sixth selective coupler 172 in a disengaged configuration. Therefore, when transitioning between the eighth forward ratio and the ninth forward ratio, fourth selective coupler 168 is placed in the disengaged configuration and second selective coupler 164 is placed in the engaged configuration.

[0043] A tenth or subsequent forward ratio (shown as 10th) in truth table 200 of FIG. 2 is achieved by having first selective coupler 162, third selective coupler 166, and sixth selective coupler 172 in an engaged configuration and second selective coupler 164, fourth selective coupler 168, and fifth selective coupler 170 in a disengaged configuration. Therefore, when transitioning between the ninth forward ratio and the tenth forward ratio, second selective coupler 164 is placed in the disengaged configuration and sixth selective coupler 172 is placed in the engaged configuration.

[0044] Downshifts may follow the reverse sequence of the corresponding upshift (as described above). Further, several power-on skip-shifts that are single-transition are possible (e.g. from 1st up to 3rd, from 3rd down to 1st, from 3rd up to 5th, and from 5th down to 3rd).

[0045] FIG. 3 is a diagrammatic representation of a multi-speed transmission 300. Multi-speed transmission 300 includes an input member 302 and an output member 304. Each of input member 302 and output member 304 is rotatable relative to at least one stationary member 306. An exemplary input member 302 is an input shaft or other suitable rotatable component. An exemplary output member 304 is an output shaft or other suitable rotatable component. An exemplary stationary member 306 is a housing of multi-speed transmission 300. The housing may include several components coupled together.

[0046] Multi-speed transmission 300 includes a plurality of planetary gearsets, illustratively a first planetary gearset 308, a second planetary gearset 310, a third planetary gearset 312, and a fourth planetary gearset 314. In one embodiment, additional planetary gearsets may be included. Further, although first planetary gearset 308, second planetary gearset 310, third planetary gearset 312, and fourth planetary gearset 314 are illustrated as simple planetary gearsets, it is contemplated that compound planetary gearsets may be included in some embodiments.

[0047] In one embodiment, multi-speed transmission 300 is arranged as illustrated in FIG. 3, with first planetary gearset 308 positioned between a first location or end 316 at which input member 302 enters stationary member 306 and second planetary gearset 310, second planetary gearset 310 is positioned between first planetary gearset 308 and third planetary gearset 312, third planetary gearset 312 is positioned between second planetary gearset 310 and fourth planetary gearset 314, and fourth planetary gearset 314 is positioned between third planetary gearset 312 and a second location or end 318 at which output member 304 exits stationary member 306. In alternative embodiments, first planetary gearset 308, second planetary gearset 310, third planetary gearset 312, and fourth planetary gearset 314 are arranged in any order relative to location 316 and location 318. In the illustrated embodiment of FIG. 3, each of first planetary gearset 308, second planetary gearset 310, third planetary gearset 312, and fourth planetary gearset 314 are axially aligned. In one example, input member 302 and output member 304 are also axially aligned with first planetary gearset 308, second planetary gearset 310, third planetary gearset 312, and fourth planetary gearset 314. In alternative embodiments, one or more of input member 302, output member 304, first planetary gearset 308, second planetary gearset 310, third planetary gearset 312, and fourth planetary gearset 314 are offset and not axially aligned with the remainder.

[0048] First planetary gearset 308 includes a sun gear 320, a planet carrier 322 supporting a plurality of planet gears 324, and a ring gear 326. Second planetary gearset 310 includes a sun gear 330, a planet carrier 332 supporting a plurality of planet gears 334, and a ring gear 336. Third planetary gearset 312 includes a sun gear 340, a planet carrier 342 supporting a plurality of planet gears 344, and a ring gear 346. Fourth planetary gearset 314 includes a sun gear 350, a planet carrier 352 supporting a plurality of planet gears 354, and a ring gear 356.

[0049] Multi-speed transmission 300 further includes a plurality of selective couplers, illustratively a first selective coupler 362, a second selective coupler 364, a third selective coupler 366, a fourth selective coupler 368, a fifth selective coupler 370, and a sixth selective coupler 372. In the illustrated embodiment, first selective coupler 362, second selective coupler 364, and sixth selective coupler 372 are brakes and third selective coupler 366, fourth selective coupler 368, and fifth selective coupler 370 are clutches. The axial locations of the clutches and brakes relative to the plurality of planetary gearsets may be altered from the illustrated axial locations.

[0050] Multi-speed transmission 300 includes several components that are illustratively shown as being fixedly coupled together. Input member 302 is fixedly coupled to sun gear 320 of first planetary gearset 308, sun gear 350 of fourth planetary gearset 114, and third selective coupler 366. Output member 304 is fixedly coupled to planet carrier 352 of fourth planetary gearset 314 and ring gear 346 of third planetary gearset 312. Ring gear 326 of first planetary gearset 308 and planet carrier 332 of second planetary gearset 310 are fixedly coupled together. Ring gear 336 of second planetary gearset 310, sun gear 340 of third planetary gearset 312, and fourth selective coupler 368 are fixedly coupled together. Ring gear 356 of fourth planetary gearset 314 is fixedly coupled to fifth selective coupler 370. Planet carrier 322 of first planetary gearset 308, fourth selective coupler 368, and first selective coupler 362 are fixedly coupled together. Planet carrier 342 of third planetary gearset 312, third selective coupler 366, fifth selective coupler 370, and sixth selective coupler 372 are fixedly coupled together. Sun gear 330 of second planetary gearset 310 is fixedly coupled to second selective coupler 364.

[0051] Multi-speed transmission 300 may be described as having eight interconnectors. Input member 302 is a first interconnector that both provides input torque to multi-speed transmission 300 and fixedly couples sun gear 320 of first planetary gearset 308, sun gear 350 of fourth planetary gearset 314, and third selective coupler 366 together. Output member 304 is a second interconnector that both provides output torque from multi-speed transmission 300 and fixedly couples planet carrier 352 of fourth planetary gearset 314 to ring gear 346 of third planetary gearset 312. A third interconnector 380 fixedly couples ring gear 326 of first planetary gearset 308, and planet carrier 332 of second planetary gearset 310 together. A fourth interconnector 382 fixedly couples ring gear 336 of second planetary gearset 310, sun gear 340 of third planetary gearset 312, and fourth selective coupler 368 together. A fifth interconnector 384 fixedly couples ring gear 356 of fourth planetary gearset 314 to fifth selective coupler 370. A sixth interconnector 386 fixedly couples planet carrier 322 of first planetary gearset 308, first selective coupler 362, and fourth selective coupler 368 together. A seventh interconnector 388 fixedly couples planet carrier 342 of third planetary gearset 312, third selective coupler 366, fifth selective coupler 370, and sixth selective coupler 372. An eighth interconnector 390 fixedly couples sun gear 330 of second planetary gearset 310 to second selective coupler 364.

[0052] In one embodiment, first planetary gearset 308 and second planetary gearset 310 are a first subset of first planetary gearset 308, second planetary gearset 310, third planetary gearset 312, and fourth planetary gearset 314 and third planetary gearset 312 and fourth planetary gearset 314 are a second subset of first planetary gearset 308, second planetary gearset 310, third planetary gearset 312, and fourth planetary gearset 314. Fourth interconnector 382 fixedly couples the first subset of first planetary gearset 308, second planetary gearset 310, third planetary gearset 312, and fourth planetary gearset 314 to the second subset of first planetary gearset 308, second planetary gearset 310, third planetary gearset 312, and fourth planetary gearset 314. In the illustrated embodiment of transmission 300, fourth interconnector 382 fixedly couples ring gear 336 of second planetary gearset 310 to sun gear 340 of third planetary gearset 312. In other embodiments, fourth interconnector 382 fixedly couples any one or more of the gearset components of the first subset of first planetary gearset 308, second planetary gearset 310, third planetary gearset 312, and fourth planetary gearset 314 to any one or more of the gearset components of the second subset of first planetary gearset 308, second planetary gearset 310, third planetary gearset 312, and fourth planetary gearset 314.

[0053] Multi-speed transmission 300 further includes several components that are illustratively shown as being selectively coupled together through selective couplers. First selective coupler 362, when engaged, fixedly couples planet carrier 322 of first planetary gearset 308 to stationary member 306. When first selective coupler 362 is disengaged, planet carrier 322 of first planetary gearset 308 may rotate relative to stationary member 306.

[0054] Second selective coupler 364, when engaged, fixedly couples sun gear 330 of second planetary gearset 310 to stationary member 306. When second selective coupler 364 is disengaged, sun gear 330 of second planetary gearset 310 may rotate relative to stationary member 306.

[0055] Third selective coupler 366, when engaged, fixedly couples planet carrier 342 of third planetary gearset 312 to sun gear 320 of first planetary gearset 308 and sun gear 350 of fourth planetary gearset 314. When third selective coupler 366 is disengaged, planet carrier 342 of third planetary gearset 312 may rotate relative to sun gear 320 of first planetary gearset 308 and sun gear 350 of fourth planetary gearset 314.

[0056] Fourth selective coupler 368, when engaged, fixedly couples planet carrier 322 of first planetary gearset 308 to ring gear 336 of second planetary gearset 310 and sun gear 340 of third planetary gearset 312. When fourth selective coupler 368 is disengaged, planet carrier 322 of first planetary gearset 308 may rotate relative to ring gear 336 of second planetary gearset 310 and sun gear 340 of third planetary gearset 312.

[0057] Fifth selective coupler 370, when engaged, fixedly couples ring gear 356 of fourth planetary gearset 314 to planet carrier 342 of third planetary gearset 312. When fifth selective coupler 370 is disengaged, ring gear 356 of fourth planetary gearset 314 may rotate relative to planet carrier 342 of third planetary gearset 312.

[0058] Sixth selective coupler 372, when engaged, fixedly couples planet carrier 342 of third planetary gearset 312 to stationary member 306. When sixth selective coupler 372 is disengaged, planet carrier 342 of third planetary gearset 312 may rotate relative to stationary member 306.

[0059] By engaging various combinations of first selective coupler 362, second selective coupler 364, third selective coupler 366, fourth selective coupler 368, fifth selective coupler 370, and sixth selective coupler 372, additional components of multi-speed transmission 300 may be fixedly coupled together.

[0060] The plurality of planetary gearsets and the plurality of selective couplers of multi-speed transmission 300 may be interconnected in various arrangements to provide torque from input member 302 to output member 304 in at least nine forward gear or speed ratios and one reverse gear or speed ratio. Referring to FIG. 4, an exemplary truth table 400 is shown that provides the state of each of first selective coupler 362, second selective coupler 364, third selective coupler 366, fourth selective coupler 368, fifth selective coupler 370, and sixth selective coupler 372 for nine different forward gear or speed ratios and one reverse gear or speed ratio. Each row corresponds to a given interconnection arrangement for transmission 300. The first column provides the gear range (reverse and 1st-9th forward gears). The second column provides the gear ratio between the input member 302 and the output member 304. The third column provides the gear step. The six rightmost columns illustrate which ones of the selective couplers 362-372 are engaged ("1" indicates engaged) and which ones of selective couplers 362-372 are disengaged ("(blank)" indicates disengaged). FIG. 4 is only one example of any number of truth tables possible for achieving at least nine forward ratios and one reverse ratio.

[0061] In the example of FIG. 4, the illustrated reverse ratio (Rev) is achieved by having second selective coupler 364, fourth selective coupler 368, and sixth selective coupler 372 in an engaged configuration and first selective coupler 362, third selective coupler 366, and fifth selective coupler 370 in a disengaged configuration.

[0062] In one embodiment, to place multi-speed transmission 300 in neutral (Neu), all of first selective coupler 362, second selective coupler 364, third selective coupler 366, fourth selective coupler 368, fifth selective coupler 370, and sixth selective coupler 372 are in the disengaged configuration. One or more of first selective coupler 362, second selective coupler 364, third selective coupler 366, fourth selective coupler 368, fifth selective coupler 370, and sixth selective coupler 372 may remain engaged in neutral (Neu) as long as the combination of first selective coupler 362, second selective coupler 364, third selective coupler 366, fourth selective coupler 368, fifth selective coupler 370, and sixth selective coupler 372 does not transmit torque from input member 302 to output member 304.

[0063] A first forward ratio (shown as 1st) in truth table 400 of FIG. 4 is achieved by having first selective coupler 362, second selective coupler 364, and sixth selective coupler 372 in an engaged configuration and third selective coupler 366, fourth selective coupler 368, and fifth selective coupler 370 in a disengaged configuration.

[0064] A second or subsequent forward ratio (shown as 2nd) in truth table 400 of FIG. 4 is achieved by having second selective coupler 364, fifth selective coupler 370, and sixth selective coupler 372 in an engaged configuration and first selective coupler 362, third selective coupler 366, and fourth selective coupler 368 in a disengaged configuration. Therefore, when transitioning between the first forward ratio and the second forward ratio, first selective coupler 362 is placed in the disengaged configuration and fifth selective coupler 370 is placed in the engaged configuration.

[0065] A third or subsequent forward ratio (shown as 3rd) in truth table 400 of FIG. 4 is achieved by having first selective coupler 362, second selective coupler 364, and fifth selective coupler 370 in an engaged configuration and third selective coupler 366, fourth selective coupler 368, and sixth selective coupler 372 in a disengaged configuration. Therefore, when transitioning between the second forward ratio and the third forward ratio, sixth selective coupler 372 is placed in the disengaged configuration and first selective coupler 362 is placed in the engaged configuration.

[0066] A fourth or subsequent forward ratio (shown as 4th) in truth table 400 of FIG. 4 is achieved by having first selective coupler 362, fourth selective coupler 368, and fifth selective coupler 370 in an engaged configuration and second selective coupler 364, third selective coupler 366, and sixth selective coupler 372 in a disengaged configuration. Therefore, when transitioning between the third forward ratio and the fourth forward ratio, second selective coupler 364 is placed in the disengaged configuration and fourth selective coupler 368 is placed in the engaged configuration.

[0067] A fifth or subsequent forward ratio (shown as 5th) in truth table 400 of FIG. 4 is achieved by having second selective coupler 364, fourth selective coupler 368, and fifth selective coupler 370 in an engaged configuration and first selective coupler 362, third selective coupler 366, and sixth selective coupler 372 in a disengaged configuration. Therefore, when transitioning between the fourth forward ratio and the fifth forward ratio, first selective coupler 362 is placed in the disengaged configuration and second selective coupler 364 is placed in the engaged configuration.

[0068] A sixth or subsequent forward ratio (shown as 6th) in truth table 400 of FIG. 4 is achieved by having second selective coupler 364, third selective coupler 366, and fifth selective coupler 370 in an engaged configuration and first selective coupler 362, fourth selective coupler 368, and sixth selective coupler 372 in a disengaged configuration. Therefore, when transitioning between the fifth forward ratio and the sixth forward ratio, fourth selective coupler 368 is placed in the disengaged configuration and third selective coupler 366 is placed in the engaged configuration. In the sixth forward ratio, torque is carried only by third selective coupler 366 and fifth selective coupler 370, thus second selective coupler 364 does not need to be engaged.

[0069] A seventh or subsequent forward ratio (shown as 7th) in truth table 400 of FIG. 4 is achieved by having second selective coupler 364, third selective coupler 366, and fourth selective coupler 368 in an engaged configuration and first selective coupler 362, fifth selective coupler 370, and sixth selective coupler 372 in a disengaged configuration. Therefore, when transitioning between the sixth forward ratio and the seventh forward ratio, fifth selective coupler 370 is placed in the disengaged configuration and fourth selective coupler 368 is placed in the engaged configuration.

[0070] An eighth or subsequent forward ratio (shown as 8th) in truth table 400 of FIG. 4 is achieved by having first selective coupler 362, third selective coupler 366, and fourth selective coupler 368 in an engaged configuration and second selective coupler 364, fifth selective coupler 370, and sixth selective coupler 372 in a disengaged configuration. Therefore, when transitioning between the seventh forward ratio and the eighth forward ratio, second selective coupler 364 is placed in the disengaged configuration and first selective coupler 362 is placed in the engaged configuration.

[0071] A ninth or subsequent forward ratio (shown as 9th) in truth table 400 of FIG. 4 is achieved by having first selective coupler 362, second selective coupler 364, and third selective coupler 366 in an engaged configuration and fourth selective coupler 368, fifth selective coupler 370, and sixth selective coupler 372 in a disengaged configuration. Therefore, when transitioning between the eighth forward ratio and the ninth forward ratio, fourth selective coupler 368 is placed in the disengaged configuration and second selective coupler 364 is placed in the engaged configuration.

[0072] Downshifts may follow the reverse sequence of the corresponding upshift (as described above). Further, several power-on skip-shifts that are single-transition are possible (e.g. from 1st up to 3rd, from 3rd down to 1st, from 3rd up to 5th, and from 5th down to 3rd).

[0073] In the illustrated embodiments, various combinations of three of the available selective couplers are engaged for each of the illustrated forward speed ratios and reverse speed ratios. Additional forward speed ratios and reverse speed ratios are possible based on other combinations of engaged selective couplers. Although in the illustrated embodiments, each forward speed ratio and reverse speed ratio has three of the available selective couplers engaged, it is contemplated that less than three and more than three selective couplers may be engaged at the same time.


Claims

1. A transmission (100, 300) comprising:

at least one stationary member (106, 306);

an input member (102, 302);

a plurality of planetary gearsets (108, 110, 112, 114, 308, 310, 312, 314) operatively coupled to the input member (102, 302), each planetary gearset of the plurality of planetary gearsets (108, 110, 112, 114, 308, 310, 312, 314) including a sun gear (120, 130, 140, 150, 320, 330, 340, 350), a plurality of planet gears (124, 134, 144, 154, 324, 334, 344, 354) operatively coupled to the sun gear (120, 130, 140, 150, 320, 330, 340, 350), a planet carrier (122, 132, 142, 152, 322, 332, 342, 352) operatively coupled to the plurality of planet gears (124, 134, 144, 154, 324, 334, 344, 354), and a ring gear (126, 136, 146, 156, 326, 336, 346, 356) operatively coupled to the plurality of planet gears (124, 134, 144, 154, 324, 334, 344, 354), the plurality of planetary gearsets (108, 110, 112, 114, 308, 310, 312, 314) including a first planetary gearset (108, 308), a second planetary gearset (110, 310), a third planetary gearset (112, 312), and a fourth planetary gearset (114, 314);

a plurality of selective couplers (162, 164, 166, 168, 170, 172, 362, 364, 366, 368, 370, 372) operatively coupled to the plurality of planetary gearsets (108, 110, 112, 114, 308, 310, 312, 314), each of the plurality of selective couplers (162, 164, 166, 168, 170, 172, 362, 364, 366, 368, 370, 372) having an engaged configuration and a disengaged configuration, the plurality of selective couplers (162, 164, 166, 168, 170, 172, 362, 364, 366, 368, 370, 372) including a first number of clutches (166, 168, 170, 172, 366, 368, 370) and a second number of brakes (162, 164, 362, 364, 372), the first number being equal to or greater than the second number;

an output member (104, 304) operatively coupled to the input member (102, 302) through the plurality of planetary gearsets (108, 110, 112, 114, 308, 310, 312, 314), the output member (104, 304) is fixedly coupled to the plurality of planetary gearsets (108, 110, 112, 114, 308, 310, 312, 314) through a first planet carrier (152, 352) of the plurality of planetary gearsets (114, 314), the input member (102, 302) is fixedly coupled to the plurality of planetary gearsets (108, 110, 112, 114, 308, 310, 312, 314) through a first sun gear (120, 320) of the plurality of planetary gearsets (108, 110, 112, 114, 308, 310, 312, 314) and through a second sun gear (150, 350) of the plurality of planetary gearsets (108, 110, 112, 114, 308, 310, 312, 314); and

an interconnector (182, 382) which fixedly couples a second ring gear (136, 336) of a first subset (108, 110, 308, 310) of the plurality of planetary gearsets (108, 110, 112, 114, 308, 310, 312, 314) to a third sun gear (140, 340) of a second subset (112, 114, 312, 314) of the plurality of planetary gearsets (108, 110, 112, 114, 308, 310, 312, 314), the first subset (108, 110, 308, 310) of the plurality of planetary gearsets (108, 110, 112, 114, 308, 310, 312, 314) including the first planetary gearset (108, 308) and the second planetary gearset (110, 310) and the second subset (112, 114, 312, 314) of the plurality of planetary gearsets (108, 110, 112, 114, 308, 310, 312, 314) including the third planetary gearset (112, 312) and the fourth planetary gearset (114, 314),

characterized in that

the output member (104, 304) is fixedly coupled to the plurality of planetary gearsets (108, 110, 112, 114, 308, 310, 312, 314) through a first ring gear (146, 346) of the plurality of planetary gearsets (112, 312).


 
2. The transmission (100, 300) of claim 1, wherein the first sun gear (120, 320) of the plurality of planetary gearsets (108, 110, 112, 114, 308, 310, 312, 314) is the sun gear (120, 320) of the first planetary gearset (108, 308) and the second sun gear (150, 350) of the plurality of planetary gearsets (108, 110, 112, 114, 308, 310, 312, 314) is the sun gear (150, 350) of the fourth planetary gearset (114, 314).
 
3. The transmission (100, 300) of any one of the preceding claims, wherein the second ring gear (136, 336) of the first subset (108, 110, 308, 310) of the plurality of planetary gearsets (108, 110, 112, 114, 308, 310, 312, 314) is the ring gear (136, 336) of the second planetary gearset (110, 310) and the third sun gear (140, 340) of the second subset (112, 114, 312, 314) of the plurality of planetary gearsets (108, 110, 112, 114, 308, 310, 312, 314) is the sun gear (140, 340) of the third planetary gearset (112, 312).
 
4. The transmission (100, 300) of any one of the preceding claims, wherein a sum of the first number and the second number is six.
 
5. The transmission (100, 300) of any one of the preceding claims, wherein the first number is at least three and the second number is at least two.
 
6. The transmission (100, 300) of any one of the preceding claims, wherein the plurality of selective couplers (162, 164, 166, 168, 170, 172, 362, 364, 366, 368, 370, 372) include a first brake (162, 362), a second brake (164, 364), a first clutch (166, 366), a second clutch (168, 368), a third clutch (170, 370), and a fourth clutch (172), wherein

the first brake (162, 362), when engaged, fixedly couples the planet carrier (122, 322) of the first planetary gearset (108, 308) to the at least one stationary member (106, 306);

the second brake (164, 364), when engaged, fixedly couples the sun gear (130, 330) of the second planetary gearset (110, 310) to the at least one stationary member (106, 306);

the first clutch (166, 366), when engaged, fixedly couples the planet carrier (142, 342) of the third planetary gearset (112, 312) to the sun gear (120, 320) of the first planetary gearset (108, 308) and the sun gear (150, 350) of the fourth planetary gearset (114, 314);

the second clutch (168, 368), when engaged, fixedly couples the planet carrier (122, 322) of the first planetary gearset (108, 308) to the sun gear (140, 340) of the third planetary gearset (112, 312) and the ring gear (136, 336) of the second planetary gearset (110, 310);

the third clutch (170, 370), when engaged, fixedly couples the planet carrier (142, 342) of the third planetary gearset (112, 312) to the ring gear (156, 356) of the fourth planetary gearset (114, 314); and

the fourth clutch (172), when engaged, fixedly couples the sun gear (130) of the second planetary gearset (110, 310) to the planet carrier (142) of the third planetary gearset (112, 312).


 
7. The transmission (100, 300) of any one of claims 1-5, wherein the plurality of selective couplers (162, 164, 166, 168, 170, 172, 362, 364, 366, 368, 370, 372) include a first brake (162, 362), a second brake (164, 364), a third brake (372), a first clutch (166, 366), a second clutch (168, 368), and a third clutch (170, 370), wherein

the first brake (162, 362), when engaged, fixedly couples the planet carrier (122, 322) of the first planetary gearset (108, 308) to the at least one stationary member (106, 306);

the second brake (164, 364), when engaged, fixedly couples the sun gear (130, 330) of the second planetary gearset (110, 310) to the at least one stationary member (106, 306);

the third brake (372), when engaged, fixedly couples the planet carrier (342) of the third planetary gearset (312) to the at least one stationary member (306);

the first clutch (166, 366), when engaged, fixedly couples the planet carrier (142, 342) of the third planetary gearset (112, 312) to the sun gear (120, 320) of the first planetary gearset (108, 308) and the sun gear (150, 350) of the fourth planetary gearset (114, 314);

the second clutch (168, 368), when engaged, fixedly couples the planet carrier (122, 322) of the first planetary gearset (108, 308) to the sun gear (140, 340) of the third planetary gearset (112, 312) and the ring gear (136, 336) of the second planetary gearset (110, 310); and

the third clutch (170, 370), when engaged, fixedly couples the planet carrier (142, 342) of the third planetary gearset (112, 312) to the ring gear (156, 356) of the fourth planetary gearset (114, 314).


 


Ansprüche

1. Getriebe (100, 300) umfassend:

mindestens ein stationäres Element (106, 306);

ein Eingangselement (102, 302);

eine Vielzahl von Planetengetrieben (108, 110, 112, 114, 308, 310, 312, 314), welche betriebsmäßig mit dem Eingangselement (102, 302) gekoppelt sind, wobei jedes Planetengetriebe der Vielzahl von Planetengetrieben (108, 110, 112, 114, 308, 310, 312, 314) ein Sonnenrad (120, 130, 140, 150, 320, 330, 340, 350), eine Mehrzahl von Planetenrädern (124, 134, 144, 154, 324, 334, 344, 354), welche mit dem Sonnenrad (120, 130, 140, 150, 320, 330, 340, 350) betriebsmäßig gekoppelt sind, einen Planetenträger (122, 132, 142, 152, 322, 332, 342, 352), welcher betriebsmäßig mit der Mehrzahl von Planetenrädern (124, 134, 144, 154, 324, 334, 344, 354) gekoppelt ist, und ein Hohlrad (126, 136, 146, 156, 326, 336, 346, 356), welches betriebsmäßig mit der Mehrzahl von Planetenrädern (124, 134, 144, 154, 324, 334, 344, 354) gekoppelt ist, aufweist, wobei die Vielzahl von Planetengetrieben (108, 110, 112, 114, 308, 310, 312, 314) ein erstes Planetengetriebe (108, 308), ein zweites Planetengetriebe (110, 310), ein drittes Planetengetriebe (112, 312) und ein viertes Planetengetriebe (114, 314) umfassen;

eine Mehrzahl von selektiven Kopplern (162, 164, 166, 168, 170, 172, 362, 364, 366, 368, 370, 372), welche betriebsmäßig mit der Vielzahl von Planetengetrieben (108, 110, 112, 114, 308, 310, 312, 314) gekoppelt sind, wobei jede der Mehrzahl von selektiven Kopplern (162, 164, 166, 168, 170, 172, 362, 364, 366, 368, 370, 372) eine in Eingriff befindliche Konfiguration und eine außer Eingriff befindliche Konfiguration aufweist, wobei die Mehrzahl von selektiven Kopplern (162, 164, 166, 168, 170, 172, 362, 364, 366, 368, 370, 372) eine erste Anzahl von Kupplungen (166, 168, 170, 172, 366, 368, 370) und eine zweite Anzahl von Bremsen (162, 164, 362, 364, 372) umfassen, wobei die erste Anzahl gleich oder größer als die zweite Anzahl ist;

ein Ausgangselement (104, 304), welches mit dem Eingangselement (102, 302) über die Vielzahl von Planetengetrieben (108, 110, 112, 114, 308, 310, 312, 314) betriebsmäßig gekoppelt ist, wobei das Ausgangselement (104, 304) mit der Vielzahl von Planetengetrieben (108, 110, 112, 114, 308, 310, 312, 314) über einen ersten Planetenträger (152, 352) der Vielzahl von Planetengetrieben (114, 314) fest gekoppelt ist, wobei das Eingangselement (102, 302) mit der Vielzahl von Planetengetrieben (108, 110, 112, 114, 308, 310, 312, 314) über ein erstes Sonnenrad (120, 320) der Vielzahl von Planetengetrieben (108, 110, 112, 114, 308, 310, 312, 314) und über ein zweites Sonnenrad (150, 350) der Vielzahl von Planetengetrieben (108, 110, 112, 114, 308, 310, 312, 314) fest gekoppelt ist; und einen Zwischenverbinder (182, 382), welcher ein zweites Hohlrad (136, 336) eines ersten Teilsatzes (108, 110, 308, 310) der Vielzahl von Planetengetrieben (108, 110, 112, 114, 308, 310, 312, 314) mit einem dritten Sonnenrad (140, 340) eines zweiten Teilsatzes (112, 114, 312, 314) der Vielzahl von Planetengetrieben (108, 110, 112, 114, 308, 310, 312, 314) fest koppelt, wobei der erste Teilsatz (108, 110, 308, 310) der Vielzahl von Planetengetrieben (108, 110, 112, 114, 308, 310, 312, 314) das erste Planetengetriebe (108, 308) und das zweite Planetengetriebe (110, 310) aufweist, und der zweite Teilsatz (112, 114, 312, 314) der Vielzahl von Planetengetrieben (108, 110, 112, 114, 308, 310, 312, 314) das dritte Planetengetriebe (112, 312) und das vierte Planetengetriebe (114, 314) aufweist, dadurch gekennzeichnet, dass

das Ausgangselement (104, 304) fest mit der Vielzahl von Planetengetrieben (108, 110, 112, 114, 308, 310, 312, 314) über ein erstes Hohlrad (146, 346) der Vielzahl von Planetengetrieben (112, 312) gekoppelt ist.


 
2. Getriebe (100, 300) nach Anspruch 1, wobei das erste Sonnenrad (120, 320) der Vielzahl von Planetengetrieben (108, 110, 112, 114, 308, 310, 312, 314) das Sonnenrad (120, 320) des ersten Planetengetriebes (108, 308) und das zweite Sonnenrad (150, 350) der Vielzahl von Planetengetrieben (108, 110, 112, 114, 308, 310, 312, 314) das Sonnenrad (150, 350) des vierten Planetengetriebes (114, 314) ist.
 
3. Getriebe (100, 300) nach einem der vorhergehenden Ansprüche, wobei das zweite Hohlrad (136, 336) des ersten Teilsatzes (108, 110, 308, 310) der Vielzahl von Planetengetrieben (108, 110, 112, 114, 308, 310, 312, 314) das Hohlrad (136, 336) des zweiten Planetengetriebes (110, 310) ist, und wobei das dritte Sonnenrad (140, 340) des zweiten Teilsatzes (112, 114, 312, 314) der Vielzahl von Planetengetrieben (108, 110, 112, 114, 308, 310, 312, 314) das Sonnenrad (140, 340) des dritten Planetengetriebes (112, 312) ist.
 
4. Getriebe (100, 300) nach einem der vorhergehenden Ansprüche, wobei eine Summe aus der ersten Anzahl und der zweiten Anzahl sechs ist.
 
5. Getriebe (100, 300) nach einem der vorhergehenden Ansprüche, wobei die erste Anzahl mindestens drei und die zweite Anzahl mindestens zwei beträgt.
 
6. Getriebe (100, 300) nach einem der vorhergehenden Ansprüche, wobei die Mehrzahl von selektiven Kopplern (162, 164, 166, 168, 170, 172, 362, 364, 366, 368, 370, 372) eine erste Bremse (162, 362), eine zweite Bremse (164, 364), eine erste Kupplung (166, 366), eine zweite Kupplung (168, 368), eine dritte Kupplung (170, 370) und eine vierte Kupplung (172) aufweisen, wobei

die erste Bremse (162, 362), wenn sie sich in Eingriff befindet, den Planetenträger (122, 322) des ersten Planetengetriebes (108, 308) fest mit dem mindestens einen stationären Element (106, 306) koppelt;

die zweite Bremse (164, 364), wenn sie sich in Eingriff befindet, das Sonnenrad (130, 330) des zweiten Planetengetriebes (110, 310) fest mit dem mindestens einen stationären Element (106, 306) koppelt;

die erste Kupplung (166, 366), wenn sie sich in Eingriff befindet, den Planetenträger (142, 342) des dritten Planetengetriebes (112, 312) fest mit dem Sonnenrad (120, 320) des ersten Planetengetriebes (108, 308) und dem Sonnenrad (150, 350) des vierten Planetengetriebes (114, 314) koppelt;

die zweite Kupplung (168, 368), wenn sie sich in Eingriff befindet, den Planetenträger (122, 322) des ersten Planetengetriebes (108, 308) fest mit dem Sonnenrad (140, 340) des dritten Planetengetriebes (112, 312) und dem Hohlrad (136, 336) des zweiten Planetengetriebes (110, 310) koppelt;

die dritte Kupplung (170, 370), wenn sie sich in Eingriff befindet, den Planetenträger (142, 342) des dritten Planetengetriebes (112, 312) fest mit dem Hohlrad (156, 356) des vierten Planetengetriebes (114, 314) koppelt; und

die vierte Kupplung (172), wenn sie sich in Eingriff befindet, das Sonnenrad (130) des zweiten Planetengetriebes (110, 310) fest mit dem Planetenträger (142) des dritten Planetengetriebes (112, 312) koppelt.


 
7. Getriebe (100, 300) nach einem der Ansprüche 1-5, wobei die Mehrzahl von selektiven Kopplern (162, 164, 166, 168, 170, 172, 362, 364, 366, 368, 370, 372) eine erste Bremse (162, 362), eine zweite Bremse (164, 364), eine dritte Bremse (372), eine erste Kupplung (166, 366), eine zweite Kupplung (168, 368) und eine dritte Kupplung (170, 370) aufweisen, wobei

die erste Bremse (162, 362), wenn sie sich in Eingriff befindet, den Planetenträger (122, 322) des ersten Planetengetriebes (108, 308) fest mit dem mindestens einen stationären Element (106, 306) koppelt;

die zweite Bremse (164, 364), wenn sie sich in Eingriff befindet, das Sonnenrad (130, 330) des zweiten Planetengetriebes (110, 310) fest mit dem mindestens einen stationären Element (106, 306) koppelt;

die dritte Bremse (372), wenn sie sich in Eingriff befindet, den Planetenträger (342) des dritten Planetengetriebes (312) fest mit dem mindestens einen stationären Element (306) koppelt;

die erste Kupplung (166, 366), wenn sie sich in Eingriff befindet, den Planetenträger (142, 342) des dritten Planetengetriebes (112, 312) fest mit dem Sonnenrad (120, 320) des ersten Planetengetriebes (108, 308) und dem Sonnenrad (150, 350) des vierten Planetengetriebes (114, 314) koppelt;

die zweite Kupplung (168, 368), wenn sie sich in Eingriff befindet, den Planetenträger (122, 322) des ersten Planetengetriebes (108, 308) fest mit dem Sonnenrad (140, 340) des dritten Planetengetriebes (112, 312) und dem Hohlrad (136, 336) des zweiten Planetengetriebes (110, 310) koppelt; und

die dritte Kupplung (170, 370), wenn sie sich in Eingriff befindet, den Planetenträger (142, 342) des dritten Planetengetriebes (112, 312) fest mit dem Hohlrad (156, 356) des vierten Planetengetriebes (114, 314) koppelt.


 


Revendications

1. Transmission (100, 300) comprenant :

au moins un élément fixe (106, 306) ;

un élément d'entrée (102, 302) ;

une pluralité de trains planétaires (108, 110, 112, 114, 308, 310, 312, 314) accouplés fonctionnellement à l'élément d'entrée (102, 302), chaque train planétaire de la pluralité de trains planétaires (108, 110, 112, 114, 308, 310, 312, 314) comportant une roue solaire (120, 130, 140, 150, 320, 330, 340, 350), une pluralité de satellites (124, 134, 144, 154, 324, 334, 344, 354) accouplés fonctionnellement à la roue solaire (120, 130, 140, 150, 320, 330, 340, 350), un porte-satellites (122, 132, 142, 152, 322, 332, 342, 352) accouplé fonctionnellement à la pluralité de trains planétaires (124, 134, 144, 154, 324, 334, 344, 354), et une couronne (126, 136, 146, 156, 326, 336, 346, 356) accouplée fonctionnellement à la pluralité de satellites (124, 134, 144, 154, 324, 334, 344, 354), la pluralité de trains planétaires (108, 110, 112, 114, 308, 310, 312, 314) comportant un premier train planétaire (108, 308), un deuxième train planétaire (110, 310), un troisième train planétaire (112, 312) et un quatrième train planétaire (114, 314),

une pluralité d'accoupleurs sélectifs (162, 164, 166, 168, 170, 172, 362, 364, 366, 368, 370, 372) accouplés fonctionnellement à la pluralité de trains planétaires (108, 110, 112, 114, 308, 310, 312, 314), chaque accoupleur sélectif de la pluralité d'accoupleurs sélectifs (162, 164, 166, 168, 170, 172, 362, 364, 366, 368, 370, 372) ayant une configuration en prise et une configuration non en prise, la pluralité d'accoupleurs sélectifs (162, 164, 166, 168, 170, 172, 362, 364, 366, 368, 370, 372) comportant un premier nombre d'embrayages (166, 168, 170, 172, 366, 368, 370) et un second nombre de freins (162, 164, 362, 364, 372), le premier nombre étant égal ou supérieur au second nombre ;

un élément de sortie (104, 304) accouplé fonctionnellement à l'élément d'entrée (102, 302) à travers la pluralité de trains planétaires (108, 110, 112, 114, 308, 310, 312, 314), l'élément de sortie (104, 304) est accouplé à demeure à la pluralité de trains planétaires (108, 110, 112, 114, 308, 310, 312, 314) à travers un premier porte-satellites (152, 352) de la pluralité de trains planétaires (114, 314), l'élément d'entrée (102, 302) est accouplé à demeure à la pluralité de trains planétaires (108, 110, 112, 114, 308, 310, 312, 314) à travers une première roue solaire (120, 320) de la pluralité de trains planétaires (108, 110, 112, 114, 308, 310, 312, 314) et à travers une deuxième roue solaire (150, 350) de la pluralité de trains planétaires (108, 110, 112, 114, 308, 310, 312, 314) ; et

un dispositif d'intercommunication (182, 382) qui accouple à demeure une seconde couronne (136, 336) d'un premier sous-ensemble (108, 110, 308, 310) de la pluralité de trains planétaires (108, 110, 112, 114, 308, 310, 312, 314) à une troisième roue solaire (140, 340) d'un second sous-ensemble (112, 114, 312, 314) de la pluralité de trains planétaires (108, 110, 112, 114, 308, 310, 312, 314), le premier sous-ensemble (108, 110, 308, 310) de la pluralité de trains planétaires (108, 110, 112, 114, 308, 310, 312, 314) comportant le premier train planétaire (108, 308) et le deuxième train planétaire (110, 310) et le second sous-ensemble (112, 114, 312, 314) de la pluralité de trains planétaires (108, 110, 112, 114, 308, 310, 312, 314) comportant le troisième train planétaire (112, 312) et le quatrième train planétaire (114, 314),

caractérisée en ce que

l'élément de sortie (104, 304) est accouplé à demeure à la pluralité de trains planétaires (108, 110, 112, 114, 308, 310, 312, 314) à travers une première couronne (146, 346) de la pluralité de trains planétaires (112, 312).


 
2. Transmission (100, 300) selon la revendication 1, la première roue solaire (120, 320) de la pluralité de trains planétaires (108, 110, 112, 114, 308, 310, 312, 314) étant la roue solaire (120, 320) du premier train planétaire (108, 308) et la deuxième roue solaire (150, 350) de la pluralité de trains planétaires (108, 110, 112, 114, 308, 310, 312, 314) étant la roue solaire (150, 350) du quatrième train planétaire (114, 314).
 
3. Transmission (100, 300) selon l'une quelconque des revendications précédentes, la seconde couronne (136, 336) du premier sous-ensemble (108, 110, 308, 310) de la pluralité de trains planétaires (108, 110, 112, 114, 308, 310, 312, 314) étant la couronne (136, 336) du deuxième train planétaire (110, 310) et la troisième roue solaire (140, 340) du second sous-ensemble (112, 114, 312, 314) de la pluralité de trains planétaires (108, 110, 112, 114, 308, 310, 312, 314) étant la roue solaire (140, 340) du troisième train planétaire (112, 312).
 
4. Transmission (100, 300) selon l'une quelconque des revendications précédentes, une somme du premier nombre et du second nombre étant six.
 
5. Transmission (100, 300) selon l'une quelconque des revendications précédentes, le premier nombre étant au moins trois et le second nombre étant au moins deux.
 
6. Transmission (100, 300) selon l'une quelconque des revendications précédentes, la pluralité d'accoupleurs sélectifs (162, 164, 166, 168, 170, 172, 362, 364, 366, 368, 370, 372) comportant un premier frein (162, 362), un deuxième frein (164, 364), un premier embrayage (166, 366), un deuxième embrayage (168, 368), un troisième embrayage (170, 370) et un quatrième embrayage (172),

le premier frein (162, 362), lorsqu'il est en prise, accouplant à demeure le porte-satellites (122, 322) du premier train planétaire (108, 308) à l'au moins un élément fixe (106, 306) ;

le deuxième frein (164, 364), lorsqu'il est en prise, accouplant à demeure la roue solaire (130, 330) du deuxième train planétaire (110, 310) à l'au moins un élément fixe (106, 306) ;

le premier embrayage (166, 366), lorsqu'il est en prise, accouplant à demeure le porte-satellites (142, 342) du troisième train planétaire (112, 312) à la roue solaire (120, 320) du premier train planétaire (108, 308) et à la roue solaire (150, 350) du quatrième train planétaire (114, 314) ;

le deuxième embrayage (168, 368), lorsqu'il est en prise, accouplant à demeure le porte-satellites (122, 322) du premier train planétaire (108, 308) à la roue solaire (140, 340) du troisième train planétaire (112, 312) et à la couronne (136, 336) du deuxième train planétaire (110, 310) ;

le troisième embrayage (170, 370), lorsqu'il est en prise, accouplant à demeure le porte-satellites (142, 342) du troisième train planétaire (112, 312) à la couronne (156, 356) du quatrième train planétaire (114, 314) ; et

le quatrième embrayage (172), lorsqu'il est en prise, accouplant à demeure la roue solaire (130) du deuxième train planétaire (110, 310) au porte-satellites (142) du troisième train planétaire (112, 312).


 
7. Transmission (100, 300) selon l'une quelconque des revendications 1 à 5, la pluralité d'accoupleurs sélectifs (162, 164, 166, 168, 170, 172, 362, 364, 366, 368, 370, 372) comportant un premier frein (162, 362), un deuxième frein (164, 364), un troisième frein (372), un premier embrayage (166, 366), un deuxième embrayage (168, 368) et un troisième embrayage (170, 370),

le premier frein (162, 362), lorsqu'il est en prise, accouplant à demeure le porte-satellites (122, 322) du premier train planétaire (108, 308) à l'au moins un élément fixe (106, 306) ;

le deuxième frein (164, 364), lorsqu'il est en prise, accouplant à demeure la roue solaire (130, 330) du deuxième train planétaire (110, 310) à l'au moins un élément fixe (106, 306) ;

le troisième frein (372), lorsqu'il est en prise, accouplant à demeure le porte-satellites (342) du troisième train planétaire (312) à l'au moins un élément fixe (306) ;

le premier embrayage (166, 366), lorsqu'il est en prise, accouplant à demeure le porte-satellites (142, 342) du troisième train planétaire (112, 312) à la roue solaire (120, 320) du premier train planétaire (108, 308) et à la roue solaire (150, 350) du quatrième train planétaire (114, 314) ;

le deuxième embrayage (168, 368), lorsqu'il est en prise, accouplant à demeure le porte-satellites (122, 322) du premier train planétaire (108, 308) à la roue solaire (140, 340) du troisième train planétaire (112, 312) et à la couronne (136, 336) du deuxième train planétaire (110, 310) ; et

le troisième embrayage (170, 370), lorsqu'il est en prise, accouplant à demeure le porte-satellites (142, 342) du troisième train planétaire (112, 312) à la couronne (156, 356) du quatrième train planétaire (114, 314).


 




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Cited references

REFERENCES CITED IN THE DESCRIPTION



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Patent documents cited in the description