(19)
(11) EP 4 800 235 A1

(12) EUROPEAN PATENT APPLICATION
published in accordance with Art. 153(4) EPC

(43) Date of publication:
02.09.2026 Bulletin 2026/36

(21) Application number: 24881119.2

(22) Date of filing: 23.07.2024
(51) International Patent Classification (IPC): 
F02F 1/16(2006.01)
F02F 1/40(2006.01)
(52) Cooperative Patent Classification (CPC):
F02F 1/40; F02F 1/16
(86) International application number:
PCT/CN2024/106926
(87) International publication number:
WO 2025/086747 (01.05.2025 Gazette 2025/18)
(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA
Designated Validation States:
GE KH MA MD TN

(30) Priority: 26.10.2023 CN 202322894177 U

(71) Applicant: BYD Company Limited
Shenzhen, Guangdong 518118 (CN)

(72) Inventors:
  • LI, Liang
    Shenzhen, Guangdong 518118 (CN)
  • WANG, Shaohui
    Shenzhen, Guangdong 518118 (CN)
  • SU, Ya
    Shenzhen, Guangdong 518118 (CN)
  • PAN, Dexin
    Shenzhen, Guangdong 518118 (CN)
  • LU, Guoxiang
    Shenzhen, Guangdong 518118 (CN)

(74) Representative: Mathys & Squire 
32 London Bridge Street The Shard
London SE1 9SG
London SE1 9SG (GB)

   


(54) CYLINDER BLOCK, ENGINE, AND VEHICLE


(57) A vehicle is provided, the vehicle includes an engine, and the engine includes a cylinder body. The cylinder body is provided with a liquid inlet, and the cylinder body includes a plurality of cylinder barrels and a cylinder body water jacket. The cylinder body water jacket includes a cylinder barrel water jacket and a secondary water jacket, the cylinder barrel water jacket and the secondary water jacket are separately connected to the liquid inlet, the cylinder barrel water jacket is disposed at the plurality of cylinder barrels, and the secondary water jacket is in communication with a cylinder head water jacket.




Description

CROSS-REFERENCE TO RELATED APPLICATIONS



[0001] This application claims priority to Chinese Patent Application No. 202322894177.8, filed with the China National Intellectual Property Administration on October 26, 2023 and entitled "CYLINDER BODY, ENGINE, AND VEHICLE", which is incorporated herein by reference in its entirety.

TECHNICAL FIELD



[0002] This application relates to the field of vehicle technologies, and in particular, to a cylinder body, an engine, and a vehicle.

BACKGROUND



[0003] In related technologies, a connection channel is disposed between a cylinder body water jacket and a cylinder head water jacket, and coolant in the cylinder body water jacket may flow into the cylinder head water jacket through the connection channel, to cool and lower a temperature of a cylinder head. However, after the coolant passes through the cylinder body water jacket and cools a cylinder body, a temperature of the coolant is already relatively high, and after entering the cylinder head water jacket, the coolant achieves a relatively poor cooling effect on the cylinder head.

SUMMARY



[0004] This application is intended to resolve at least one of the technical problems in the conventional technologies. Therefore, this application provides a cylinder body. The cylinder body may implement allocation of coolant flow to a cylinder barrel water jacket and a cylinder head water jacket, thereby improving cooling efficiency of a cylinder body and a cylinder head.

[0005] This application further provides an engine.

[0006] This application still further provides a vehicle.

[0007] According to the cylinder body in this application, the cylinder body is provided with a liquid inlet, and the cylinder body includes a plurality of cylinder barrels and a cylinder body water jacket. The cylinder body water jacket includes a cylinder barrel water jacket and a secondary water jacket, the cylinder barrel water jacket and the secondary water jacket are separately connected to the liquid inlet, the cylinder barrel water jacket is disposed at the plurality of cylinder barrels, and the secondary water jacket is in communication with a cylinder head water jacket.

[0008] According to the cylinder body in this application, the secondary water jacket is provided, so that coolant can directly enter the cylinder head water jacket through the secondary water jacket. In this way, the coolant can independently flow through the cylinder barrel water jacket and the cylinder head water jacket, and the coolant does not need to pass through the cylinder barrel water jacket before flowing into the cylinder head water jacket, thereby implementing allocation of coolant flow to the cylinder barrel water jacket and the cylinder head water jacket, and improving cooling efficiency of the cylinder body and a cylinder head.

[0009] In some examples of this application, the secondary water jacket is disposed on a side of the cylinder barrel water jacket away from the plurality of cylinder barrels.

[0010] In some examples of this application, the cylinder body further includes a plurality of first throttles, and the plurality of first throttles are spaced apart on the secondary water jacket.

[0011] In some examples of this application, the cylinder body further includes a second throttle, the second throttle is disposed at two ends of the cylinder barrel water jacket, the cylinder barrel water jacket includes an intake-side water jacket and an exhaust-side water jacket, the intake-side water jacket is in communication with the exhaust-side water jacket, the intake-side water jacket is in communication with the liquid inlet, and the second throttle is disposed between the intake-side water jacket and the exhaust-side water jacket.

[0012] In some examples of this application, the cylinder body is provided with a cylinder head mounting surface, the cylinder head mounting surface is provided with a plurality of mounting holes, the second throttle is disposed between two adjacent mounting holes, the second throttle is provided with a slot, and a cross section of the slot gradually increases in a direction away from the cylinder head mounting surface.

[0013] In some examples of this application, the cylinder barrel water jacket disposed between two adjacent cylinder barrels defines an inter-cylinder water jacket, a cooling channel is formed in the inter-cylinder water jacket, and the cooling channel connects the intake-side water jacket and the exhaust-side water jacket.

[0014] In some examples of this application, the cooling channel includes a first cooling channel and a second cooling channel, the first cooling channel is in communication with the second cooling channel, and both the first cooling channel and the second cooling channel are disposed obliquely.

[0015] In some examples of this application, a junction between the first cooling channel and the second cooling channel is disposed close to a top of the cylinder barrel.

[0016] In some examples of this application, the cylinder barrel water jacket is inwardly recessed at a junction between two adjacent cylinder barrels.

[0017] The engine according to this application includes the cylinder body described above.

[0018] In some examples of this application, the engine further includes a cylinder gasket. The cylinder gasket is provided with at least one liquid outlet, the at least one liquid outlet is in communication with the secondary water jacket, and the at least one liquid outlet is in communication with the cylinder head water jacket.

[0019] The vehicle according to this application includes the engine described above.

[0020] Some of additional aspects and advantages of this application are provided in the following descriptions, and some of the additional aspects and the advantages become apparent from the following descriptions or are learned from practice of this application.

BRIEF DESCRIPTION OF DRAWINGS



[0021] The foregoing and/or additional aspects and advantages of this application will be clear and easily understood from the description of the embodiments taken in conjunction with the following drawings.

FIG. 1 is a schematic diagram of a structure of a cylinder body according to an embodiment of this application;

FIG. 2 is a schematic diagram of a structure of a cylinder body from another angle according to an embodiment of this application;

FIG. 3 is a schematic diagram of a structure of a cylinder body from still another angle according to an embodiment of this application;

FIG. 4 is a sectional view of a cylinder body according to an embodiment of this application;

FIG. 5 is a schematic block diagram of an engine according to an embodiment of this application; and

FIG. 6 is a schematic block diagram of a vehicle according to an embodiment of this application.


Reference numerals:



[0022] 

vehicle 1000,

engine 100,

cylinder body 1, cylinder gasket 2,

cylinder barrel 11, liquid inlet 12, cylinder head mounting surface 13, mounting hole 14, liquid outlet 15, cylinder body water jacket 20, cylinder barrel water jacket 21, secondary water jacket 22, inter-cylinder water jacket 23, cooling channel 24, first cooling channel 25, second cooling channel 26, intake-side water jacket 27, exhaust-side water jacket 28, cylinder head water jacket 29, second throttle 30, slot 301, and first throttle 40.


DESCRIPTION OF EMBODIMENTS



[0023] Embodiments of this application are described in detail below. The embodiments described with reference to the accompanying drawings are examples.

[0024] The following describes a cylinder body 1 according to an embodiment of this application with reference to FIG. 1 to FIG. 4.

[0025] As shown in FIG. 1, the cylinder body 1 according to this embodiment of this application includes a cylinder body water jacket 20. The cylinder body 1 may mainly provide a mounting and fastening function. The cylinder body water jacket 20 refers to space between an inner housing and an outer housing of the cylinder body 1. Coolant may circulate in the water jacket to take away heat formed by the cylinder body 1.

[0026] As shown in FIG. 1, the cylinder body 1 further includes a plurality of cylinder barrels 11. The cylinder barrel 11 defines a space for movement of a piston, the piston may smoothly slide back and forth in the cylinder barrel 11, and the cylinder barrel 11 is also a place in which fuel and oxygen fully mix and burn to generate energy. Energy generated by fuel combustion pushes the piston and transfers force to a wheel, so that the wheel rotates to drive a vehicle to move.

[0027] As shown in FIG. 1 and FIG. 3, the cylinder body water jacket 20 includes a cylinder barrel water jacket 21 and a secondary water jacket 22. The cylinder body 1 is provided with a liquid inlet 12, the cylinder barrel water jacket 21 and the secondary water jacket 22 are separately connected to the liquid inlet 12, the cylinder barrel water jacket 21 is disposed at the plurality of cylinder barrels 11, and the secondary water jacket 22 is in communication with a cylinder head water jacket 29. To be specific, coolant may enter the cylinder body 1 from the liquid inlet 12. A part of the coolant may flow into the plurality of cylinder barrels 11 through the cylinder barrel water jacket 21, to cool and lower temperatures of the plurality of cylinder barrels 11. The coolant obtained after cooling the plurality of cylinder barrels 11 may be discharged from the cylinder barrel water jacket 21. The other part of the coolant may enter the secondary water jacket 22. The secondary water jacket 22 provides a communication function, so that the coolant can enter the cylinder head water jacket 29 through the secondary water jacket 22, to cool and lower a temperature of a cylinder head.

[0028] In this way, the secondary water jacket 22 is provided, so that coolant can directly enter the cylinder head water jacket 29 through the secondary water jacket 22. In this way, the coolant can independently flow through the cylinder barrel water jacket 21 and the cylinder head water jacket 29, and the coolant does not need to pass through the cylinder barrel water jacket 21 before flowing into the cylinder head water jacket 29, thereby implementing allocation of coolant flow to the cylinder barrel water jacket 21 and the cylinder head water jacket 29, and improving cooling efficiency of the cylinder body 1 and the cylinder head.

[0029] As shown in FIG. 1, the secondary water jacket 22 is disposed on a side of the cylinder barrel water jacket 21 away from the plurality of cylinder barrels 11. In other words, the cylinder barrel water jacket 21 may separate the secondary water jacket 22 from the plurality of cylinder barrels 11. In this way, heat of the plurality of cylinder barrels 11 may be emitted to the cylinder barrel water jacket 21, and an amount of heat of the plurality of cylinder barrels 11 emitted to the secondary water jacket 22 may be reduced, to prevent heat emitted by the plurality of cylinder barrels 11 from affecting coolant in the secondary water jacket 22, thereby improving a cooling effect of the coolant in the secondary water jacket 22 on the cylinder head.

[0030] Optionally, as shown in FIG. 1, the cylinder body 1 further includes a plurality of first throttles 40, and the plurality of first throttles 40 are spaced apart on the secondary water jacket 22. The first throttle 40 may provide a throttling function. A plurality of first throttles 40 are disposed on the secondary water jacket 22, and the plurality of first throttles 40 are spaced apart. In this way, a pressure-stabilized water cavity may be formed when the secondary water jacket 22 discharges coolant, so that the coolant can flow more smoothly into the cylinder head water jacket 29, and flow of the coolant at cylinder positions of the cylinder head water jacket 29 is more uniform, thereby reducing a pressure loss.

[0031] As shown in FIG. 2, an engine includes a cylinder gasket 2, and the cylinder gasket 2 may provide a sealing function, to prevent leakage of coolant in the cylinder barrel water jacket 21 and the secondary water jacket 22, thereby ensuring a cooling effect of the cylinder barrel 11 and the cylinder head. The cylinder gasket 2 is provided with at least one liquid outlet 15, the at least one liquid outlet 15 is in communication with the secondary water jacket 22, and the at least one liquid outlet 15 is in communication with the cylinder head water jacket 29. In other words, the coolant in the secondary water jacket 22 may flow into the cylinder head water jacket 29 through the at least one liquid outlet 15, to cool the cylinder head. In addition, there may be one liquid outlet 15, so that coolant obtained after the plurality of first throttles 40 perform throttling can form a pressure-stabilized water cavity at the liquid outlet 15. There may alternatively be a plurality of liquid outlets 15, and the plurality of liquid outlets 15 are disposed in correspondence with the plurality of first throttles 40. In this way, flow of coolant at cylinder positions of the cylinder head water jacket 29 is more uniform, thereby reducing a pressure loss.

[0032] In addition, as shown in FIG. 1, the cylinder body 1 further includes a second throttle 30, and the second throttle 30 is disposed at two ends of the cylinder barrel water jacket 21. The cylinder barrel water jacket 21 includes an intake-side water jacket 27 and an exhaust-side water jacket 28, the intake-side water jacket 27 is in communication with the exhaust-side water jacket 28, the intake-side water jacket 27 is in communication with the liquid inlet 12, and the second throttle 30 is disposed between the intake-side water jacket 27 and the exhaust-side water jacket 28. The second throttle 30 may provide a throttling function. The second throttle 30 is disposed at two ends of the cylinder barrel water jacket 21, that is, the second throttle 30 is disposed in the cylinder barrel water jacket 21, and the second throttle 30 is connected between the inner housing and the outer housing of the cylinder body 1. In this way, the second throttle 30 may not only perform throttling on coolant in the cylinder barrel water jacket 21, but also improve overall structural strength of the cylinder body 1. It will be noted that, compared with common throttling through a rubber rod, use of the second throttle 30 reduces more costs.

[0033] The intake-side water jacket 27 is located on an intake side of the cylinder barrel 11. After entering the intake-side water jacket 27, coolant may cool the intake side of the cylinder barrel 11. The exhaust-side water jacket 28 is located on an exhaust side of the cylinder barrel 11. After entering the exhaust-side water jacket 28, the coolant may cool the exhaust side of the cylinder barrel 11. The intake-side water jacket 27 is in communication with the liquid inlet 12, so that the coolant can first enter the intake-side water jacket 27 through the liquid inlet 12. The intake-side water jacket 27 is in communication with the exhaust-side water jacket 28, so that the coolant in the intake-side water jacket 27 can enter the exhaust-side water jacket 28.

[0034] The second throttle 30 is disposed between the intake-side water jacket 27 and the exhaust-side water jacket 28, and the second throttle 30 is disposed at the two ends of the cylinder barrel water jacket 21. To be specific, when the coolant in the intake-side water jacket 27 is located at two ends of the cylinder barrel 11, only a small part of the coolant enters the exhaust-side water jacket 28 because of throttling of the second throttle 30. In this way, flowing of the coolant at the two ends of the cylinder barrel 11 can be reduced. It will be noted that the intake-side water jacket 27 and the exhaust-side water jacket 28 may alternatively be in communication at a junction between two adjacent cylinder barrels 11. In this way, as much coolant in the intake-side water jacket 27 as possible is enabled to enter the exhaust-side water jacket 28 through the junction between the two adjacent cylinder barrels 11. Therefore, fluidity of the coolant between the two adjacent cylinder barrels 11 can be improved, to better perform cooling and temperature lowering between the two adjacent cylinder barrels 11, and further improve warm-up efficiency.

[0035] As shown in FIG. 1, the cylinder body 1 is provided with a cylinder head mounting surface 13, the cylinder head mounting surface 13 is provided with a plurality of mounting holes 14, the second throttle 30 is disposed between two adjacent mounting holes 14, and the second throttle 30 is provided with a slot 301, and a cross section of the slot 301 gradually increases in a direction away from the cylinder head mounting surface 13. The cylinder head mounting surface 13 is a surface connected to the cylinder head, and the cylinder head mounting surface 13 is provided with a plurality of mounting holes 14, so that the cylinder head can be fastened to the cylinder body 1 through the plurality of mounting holes 14, to form a whole with the cylinder body 1. The second throttle 30 is disposed between two adjacent mounting holes 14, to prevent a cylinder hole and the mounting hole 14 from being connected through the second throttle 30, thereby preventing an increase in the deformation amount of the cylinder hole.

[0036] In addition, the second throttle 30 is provided with the slot 301, and the cross section of the slot 301 gradually increases in the direction away from the cylinder head mounting surface 13. It will be understood that, the cross section of the slot 301 gradually increases in the direction away from the cylinder head mounting surface 13, and therefore an area in which the second throttle 30 is connected to and in contact with the inner housing and the outer housing of the cylinder body 1 gradually decreases. In other words, at a position close to a cylinder port, the area in which the second throttle 30 is connected to and in contact with the inner housing and the outer housing of the cylinder body 1 is largest. In this way, a structure of the cylinder body 1 at a position of the cylinder port is more stable and secure. When the cylinder head is connected and mounted to the cylinder body 1, the cylinder port is not easily deformed. In addition, this arrangement may make overall deformation of the cylinder body 1 relatively uniform and reduce impact on the cylinder body 1.

[0037] Certainly, as shown in FIG. 1, the cylinder barrel water jacket 21 disposed between two adjacent cylinder barrels 11 defines an inter-cylinder water jacket 23, a cooling channel 24 is formed in the inter-cylinder water jacket 23, and the cooling channel 24 connects the intake-side water jacket 27 and the exhaust-side water jacket 28. With reference to the description above, the cylinder barrel water jacket 21 between the two adjacent cylinder barrels 11 defines the inter-cylinder water jacket 23, and the cooling channel 24 is formed in the inter-cylinder water jacket 23. In this way, the coolant in the intake-side water jacket 27 can flow into the exhaust-side water jacket 28 through the cooling channel 24, so that fluidity of the coolant between the two adjacent cylinder barrels 11 can be improved, thereby better performing cooling and temperature lowering between the two adjacent cylinder barrels 11.

[0038] It will be noted that, initially, a part of the coolant in the cylinder barrel water jacket 21 flows through the intake-side water jacket 27, and a part of the coolant enters the exhaust-side water jacket 28 through the second throttle 30. A part of the coolant in the intake-side water jacket 27 flows into the exhaust-side water jacket 28 through the cooling channel 24, and a part of the coolant is discharged from the liquid outlet 15 of the cylinder barrel water jacket 21. A part of the coolant in the exhaust-side water jacket 28 flows from a water intake of a turbocharger to the turbocharger, and a part of the coolant is also discharged from the liquid outlet 15 of the cylinder barrel water jacket 21.

[0039] Specifically, as shown in FIG. 4, the cooling channel 24 includes a first cooling channel 25 and a second cooling channel 26, the first cooling channel 25 is in communication with the second cooling channel 26, and both the first cooling channel 25 and the second cooling channel 26 are disposed obliquely. To be specific, a part of the coolant in the intake-side water jacket 27 may enter the exhaust-side water jacket 28 through the first cooling channel 25 and the second cooling channel 26. In addition, both the first cooling channel 25 and the second cooling channel 26 are disposed obliquely, which helps process and dispose the first cooling channel 25 and the second cooling channel 26, and may increase lengths of the first cooling channel 25 and the second cooling channel 26, thereby increasing a flow range of the coolant between two adjacent cylinder barrels 11, and improving an effect of performing cooling and temperature lowering between two adjacent cylinder barrels 11 by the coolant.

[0040] In addition, as shown in FIG. 4, a junction between the first cooling channel 25 and the second cooling channel 26 is disposed close to a top of the cylinder barrel 11. It will be noted that the top of the cylinder barrel 11 is close to a combustion chamber, and therefore, the top position of the cylinder barrel 11 is greatly affected by a heat load. Because the coolant in the cooling channel 24 passes through the junction between the first cooling channel 25 and the second cooling channel 26, the junction between the first cooling channel 25 and the second cooling channel 26 is disposed close to the top of the cylinder barrel 11. In this way, when passing through the junction between the first cooling channel 25 and the second cooling channel 26, the coolant can better cool and lower the temperature of the top of the cylinder barrel 11, thereby improving an overall cooling effect of the cylinder body 1. A distance between the top of the cylinder barrel 11 and the junction between the first cooling channel 25 and the second cooling channel 26 is about 14 mm, so that the junction between the first cooling channel 25 and the second cooling channel 26 may be as close to the highest temperature point of the cylinder hole as possible while satisfying processing requirements. In addition, a diameter of the cooling channel 24 is about 3 mm, so that it can be ensured that the cooling channel 24 does not interfere with a burr on the cylinder body 1 to prevent coolant leakage.

[0041] According to an optional embodiment of this application, as shown in FIG. 1, the cylinder barrel water jacket 21 is inwardly recessed at a junction between two adjacent cylinder barrels 11. It will be understood that the cylinder barrel water jacket 21 is inwardly recessed at a junction between two adjacent cylinder barrels 11. In this way, when the coolant passes through the junction between the two adjacent cylinder barrels 11, a contact area between the coolant and the junction between the two adjacent cylinder barrels 11 may be increased, and the coolant is closer to the highest temperature point between the two adjacent cylinder barrels 11, thereby further improving an effect of performing cooling and temperature lowering between the two adjacent cylinder barrels 11 by the coolant. The cylinder barrel water jacket 21 has an inwardly recessed dimension of about 3.5 mm at the junction between two adjacent cylinder barrels 11, and a depth dimension is about 10 mm.

[0042] An engine 100 according to an embodiment of this application includes the cylinder body 1 in any one of the foregoing embodiments, as shown in FIG. 5.

[0043] A vehicle 1000 according to this embodiment of this application includes the engine 100 in the foregoing embodiment, as shown in FIG. 6.

[0044] In the description of this application, it will be understood that the orientation or positional relationship indicated by terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description of this application and simplification of description rather than indicating or implying that the apparatus or element referred to need to have a particular orientation or be constructed and operated in a particular orientation, and therefore, will not be understood as a limitation on this application.

[0045] In the description of this application, "a first feature" and "a second feature" may include one or more such features. In the description of this application, "a plurality of" means two or more. In description of this application, that the first feature is "above" or "below" the second feature may include that the first feature is in direct contact with the second feature, or may include that the first feature and the second feature are not in direct contact but in contact through another feature between the first feature and the second feature. In the description of this application, that the first feature is "above", "on", and "over" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that a horizontal height of the first feature is higher than that of the second feature.

[0046] In the description of this specification, descriptions referring to the terms such as "one embodiment", "some embodiments", "example embodiments", "examples", "specific examples", or "some examples" mean that specific features, structures, materials, or characteristics described with reference to the embodiment or example are included in at least one embodiment or example of this application. In this specification, illustrative expressions of the foregoing terms do not necessarily refer to a same embodiment or example.

[0047] Although the embodiments of this application have been shown and described, a person of ordinary skill in the art will understand that many changes, modifications, replacements, and variations can be made to these embodiments without departing from the principles and purposes of this application, and the scope of this application is defined by the claims and their equivalents.


Claims

1. A cylinder body (1), the cylinder body (1) being provided with a liquid inlet (12), and the cylinder body (1) comprising:

a plurality of cylinder barrels (11); and

a cylinder body water jacket (20), the cylinder body water jacket (20) comprising a cylinder barrel water jacket (21) and a secondary water jacket (22), wherein the cylinder barrel water jacket (21) and the secondary water jacket (22) are separately connected to the liquid inlet (12), the cylinder barrel water jacket (21) is disposed at the plurality of cylinder barrels (11), and the secondary water jacket (22) is in communication with a cylinder head water jacket (29).


 
2. The cylinder body (1) according to claim 1, wherein the secondary water jacket (22) is disposed on a side of the cylinder barrel water jacket (21) away from the plurality of cylinder barrels (11).
 
3. The cylinder body (1) according to claim 1 or 2, further comprising:
a plurality of first throttles (40), the plurality of first throttles (40) being spaced apart on the secondary water jacket (22).
 
4. The cylinder body (1) according to any one of claims 1 to 3, further comprising:
a second throttle (30), the second throttle (30) being disposed at two ends of the cylinder barrel water jacket (21), wherein the cylinder barrel water jacket (21) comprises an intake-side water jacket (27) and an exhaust-side water jacket (28), the intake-side water jacket (27) is in communication with the exhaust-side water jacket (28), the intake-side water jacket (27) is in communication with the liquid inlet (12), and the second throttle (30) is disposed between the intake-side water jacket (27) and the exhaust-side water jacket (28).
 
5. The cylinder body (1) according to claim 4, the cylinder body (1) being provided with a cylinder head mounting surface (13), the cylinder head mounting surface (13) being provided with a plurality of mounting holes (14), wherein the second throttle (30) is disposed between two adjacent mounting holes (14), the second throttle (30) is provided with a slot (301), and a cross section of the slot (301) gradually increases in a direction away from the cylinder head mounting surface (13).
 
6. The cylinder body (1) according to claim 4 or 5, wherein the cylinder barrel water jacket (21) disposed between two adjacent cylinder barrels (11) defines an inter-cylinder water jacket (23), a cooling channel (24) is formed in the inter-cylinder water jacket (23), and the cooling channel (24) connects the intake-side water jacket (27) and the exhaust-side water jacket (28).
 
7. The cylinder body (1) according to claim 6, wherein the cooling channel (24) comprises:

a first cooling channel (25); and

a second cooling channel (26), wherein the second cooling channel (26) is in communication with the first cooling channel (25), and both the second cooling channel (26) and the first cooling channel (25) are disposed obliquely.


 
8. The cylinder body (1) according to claim 7, wherein a junction between the first cooling channel (25) and the second cooling channel (26) is disposed close to a top of the cylinder barrel (11).
 
9. The cylinder body (1) according to any one of claims 1 to 8, wherein the cylinder barrel water jacket (21) is inwardly recessed at a junction between two adjacent cylinder barrels (11).
 
10. An engine (100), comprising the cylinder body (1) according to any one of claims 1 to 9.
 
11. The engine (100) according to claim 10, comprising:
a cylinder gasket (2), the cylinder gasket (2) being provided with at least one liquid outlet (15), wherein the at least one liquid outlet (15) is in communication with the secondary water jacket (22), and the at least one liquid outlet (15) is in communication with the cylinder head water jacket (29).
 
12. A vehicle (1000), comprising the engine (100) according to claim 10 or 11.
 




Drawing
















Search report










Cited references

REFERENCES CITED IN THE DESCRIPTION



This list of references cited by the applicant is for the reader's convenience only. It does not form part of the European patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be excluded and the EPO disclaims all liability in this regard.

Patent documents cited in the description