Patent ID: 7860629
Filing Date: 2010-12-28
Classification: B60W,F16H

Abstract:
1. A method for controlling a motor vehicle drivetrain system, which motor vehicle drivetrain system has a drivetrain ( 122 ) and a combustion engine ( 124 ) for the purpose of driving drivetrain ( 122 ) and which motor vehicle drivetrain system has an electronic engine control unit ( 132 ) that controls the combustion engine ( 124 ) and an electronic transmission control unit ( 110 ) for the purpose of controlling at least one of first or second torque transmission device ( 114 , 116 ) or gearbox device ( 102 , 106 ) where the electronic engine control unit ( 132 ) has a signal output connected to the transmission control unit ( 110 ), the signal output for transmitting signals to the transmission control unit ( 110 ), and a signal transmission link connected to the transmission control unit ( 110 ), the link for receiving signals from the transmission control unit ( 110 ), comprising: determining, using the electronic engine control unit ( 132 ) and the signals received or transmitted by the electronic engine control unit ( 132 ), whether there is a functional impairment in the first or second torque transmission device ( 114 , 116 ) or, actuation device ( 106 ), or the electronic transmission control unit ( 110 ); and limiting, using the electronic engine control unit ( 132 ), maximum permissible engine torque of the combustion engine when the electronic engine control unit ( 132 ) has determined a functional impairment in the first or second torque transmission device ( 114 , 116 ) or, the actuation device ( 106 ), or the electronic transmission control unit ( 110 ), wherein the second torque transmission device ( 116 ) is an electric motor.