US 12,012,090 B2
Method for operating a dual clutch transmission of a motor vehicle and motor vehicle
Enrico Szeppat, Lunzenau OT Göritzhain (DE); and Lutz Gundlach, Ingolstadt (DE)
Assigned to AUDI AG, Ingolstadt (DE)
Appl. No. 17/798,159
Filed by AUDI AG, Ingolstadt (DE)
PCT Filed Apr. 6, 2021, PCT No. PCT/EP2021/058878
§ 371(c)(1), (2) Date Aug. 8, 2022,
PCT Pub. No. WO2021/213795, PCT Pub. Date Oct. 28, 2021.
Claims priority of application No. 102020110610.6 (DE), filed on Apr. 20, 2020.
Prior Publication US 2023/0074183 A1, Mar. 9, 2023
Int. Cl. B60W 20/30 (2016.01); B60K 6/48 (2007.10); B60W 10/02 (2006.01); B60W 10/06 (2006.01); B60W 10/08 (2006.01); B60W 10/113 (2012.01); B60W 30/18 (2012.01); F16H 59/44 (2006.01); F16H 61/00 (2006.01); F16H 61/20 (2006.01); F16H 61/688 (2006.01); F16H 59/66 (2006.01)
CPC B60W 20/30 (2013.01) [B60K 6/48 (2013.01); B60W 10/02 (2013.01); B60W 10/06 (2013.01); B60W 10/08 (2013.01); B60W 10/113 (2013.01); B60W 30/18027 (2013.01); B60W 30/18118 (2013.01); F16H 61/0059 (2013.01); F16H 61/20 (2013.01); F16H 61/688 (2013.01); B60K 2006/4816 (2013.01); B60W 2710/021 (2013.01); B60W 2710/06 (2013.01); B60W 2710/083 (2013.01); B60W 2710/1005 (2013.01); B60Y 2200/92 (2013.01); B60Y 2300/18025 (2013.01); B60Y 2300/18116 (2013.01); F16H 2059/446 (2013.01); F16H 2059/663 (2013.01); F16H 2061/205 (2013.01); F16H 2200/0052 (2013.01); F16H 2312/02 (2013.01); F16H 2312/04 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for operating a dual clutch transmission of a motor vehicle having a first partial transmission, a second partial transmission, and a transmission output shaft which is common to the first partial transmissions and configured to be driven by both the first partial transmission and the second partial transmission, in which the dual clutch transmission is in a parking lock state in which first and second gears of one of the partial transmissions are engaged simultaneously, wherein
to exit the parking lock state, the following steps must be performed:
a) introducing a torque caused by a drive element of the motor vehicle via the transmission output shaft into the first partial transmission and the second partial transmission while the gears of the first partial transmission are engaged; and
b) disengaging at least one gear of the first partial transmission engaged simultaneously in step a).