US 9,809,226 B2
Method for controlling a drivetrain having a dual-clutch transmission
Georg Goeppert, Hausach (DE); and Artur Schlappa, Ettlingen (DE)
Assigned to Schaeffler Technologies AG & Co., KG, Herzogenaurach (DE)
Appl. No. 14/916,795
Filed by Schaeffler Technologies AG & Co. KG, Herzogenaurach (DE)
PCT Filed Sep. 19, 2014, PCT No. PCT/DE2014/200483
§ 371(c)(1), (2) Date Mar. 4, 2016,
PCT Pub. No. WO2015/048962, PCT Pub. Date Apr. 9, 2015.
Claims priority of application No. 10 2013 220 152 (DE), filed on Oct. 4, 2013; and application No. 10 2014 201 021 (DE), filed on Jan. 21, 2014.
Prior Publication US 2016/0194005 A1, Jul. 7, 2016
Int. Cl. B60W 10/06 (2006.01); B60W 30/188 (2012.01); F16H 61/12 (2010.01); F16H 61/688 (2006.01); F16H 63/50 (2006.01); B60W 10/02 (2006.01); B60W 10/113 (2012.01)
CPC B60W 30/188 (2013.01) [B60W 10/02 (2013.01); B60W 10/06 (2013.01); B60W 10/113 (2013.01); F16H 61/12 (2013.01); F16H 61/688 (2013.01); F16H 63/50 (2013.01); B60W 2510/0225 (2013.01); B60W 2510/0657 (2013.01); B60W 2510/0695 (2013.01); B60W 2510/1005 (2013.01); B60W 2520/105 (2013.01); B60W 2710/021 (2013.01); B60W 2710/025 (2013.01); B60W 2710/0666 (2013.01); B60W 2710/1005 (2013.01); F16H 2061/124 (2013.01); F16H 2063/508 (2013.01); Y10T 477/79 (2015.01)] 10 Claims
OG exemplary drawing
 
1. A method for controlling a drivetrain, comprising:
an internal combustion engine dependent on a load demand on a target engine torque and having a dual-clutch transmission with two sub-transmissions, each having a friction clutch positioned operatively between the internal combustion engine and a sub-transmission with a changing maximum transferable torque, wherein a specified clutch torque is set along an actuation travel path by means of a clutch actuator, wherein a clutch characteristic of the transferable clutch torque is continuously adapted over the actuation travel path, wherein a maximum engine torque for a sub-transmission, which is reduced in comparison to the target engine torque, is limited to the maximum clutch torque transferable by means of the friction clutch of that sub-transmission, wherein the maximum engine torque is ascertained on the basis of the adapted maximum clutch torque, transferable via the friction clutch, of a first correction value dependent on the actuation travel, and of a second correction value dependent on the dynamic behavior of the internal combustion engine.