EP 2283252 A1 20110216 - MULTIGROUP TRANSMISSION OF A MOTOR VEHICLE
Title (en)
MULTIGROUP TRANSMISSION OF A MOTOR VEHICLE
Title (de)
MEHRGRUPPENGETRIEBE EINES KRAFTFAHRZEUGES
Title (fr)
BOÎTE DE VITESSES MULTIGROUPE D UN VÉHICULE À MOTEUR
Publication
Application
Priority
- EP 2009055384 W 20090505
- DE 102008002296 A 20080609
Abstract (en)
[origin: WO2009149993A1] The invention relates to a multigroup transmission of a motor vehicle, having a front-mounted group (2), a transmission input shaft (7) that is provided on the drive side and can be connected via a starting element (16) to a drive motor (5), a main group (3), a main transmission shaft (30) on the driven side, and a powershift means (40) by which the transmission input shaft (7) can be connected to the main transmission shaft (30) for shifting into an intermediate gear when changing gears. In order to reduce costs and design effort and in order to achieve a compact design, the powershift means (40) and a shifting device (39) for shifting gear constants (ik1, ik2) of the front-mounted group (2) are designed as an integrated assembly (17). In a method for operating a multigroup transmission, the powershift means (40) supports a torque of the drive motor (5) at the main transmission shaft (30) in a slip mode when changing into an intermediate gear, with the starting element (16) at least partially closed, while the rotational speed of the drive motor (5) is being adjusted to a synchronous speed of a target gear, after which an original gear is disengaged in no-load condition, the target gear is engaged as the synchronous speed is reached, and finally the intermediate gear is reopened.
IPC 8 full level
F16H 37/04 (2006.01); F16H 61/70 (2006.01)
CPC (source: EP US)
F16H 37/042 (2013.01 - EP US); F16H 61/702 (2013.01 - EP US); F16H 37/046 (2013.01 - EP US); F16H 2061/0425 (2013.01 - EP US); Y10T 74/19242 (2015.01 - EP US)
Citation (search report)
See references of WO 2009149993A1
Designated contracting state (EPC)
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 SE SI SK TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
DE 102008002296 A1 20091210; CN 102057187 A 20110511; CN 102057187 B 20140416; EP 2283252 A1 20110216; US 2011072923 A1 20110331; US 9068636 B2 20150630; WO 2009149993 A1 20091217
DOCDB simple family (application)
DE 102008002296 A 20080609; CN 200980121624 A 20090505; EP 09761556 A 20090505; EP 2009055384 W 20090505; US 99158409 A 20090505