Siemens Aktiengesellschaft

Georg Grassl

Gregor Probst

Martin Rampeltshammer

Florian Gutknecht-St&ouml;hr

Florian Gutknecht-Stöhr

Florian Gutknecht-Stoehr

Friedrich Gassner

A torque set value is determined in a pedal interpretation unit () from a parameter which characterizes the drivers command. Operating parameters for the vehicle are evaluated and classified in a driver and situation recognition unit (). A set operating status for the drivetrain is fixed in a status manager (), depending upon the torque set value and the output signals from the driver and situation recognition unit. Control signals for remote control units () for the drive units and for the gearbox () are then generated in a torque manager (), dependent upon the torque set value and the set operating status.

Drivetrain controller for a motor vehicle with at least two power units and a gear-box

A control unit () for regulating the transmission ratio of a transmission () which is located in a drive train together with a motor (), in order to obtain braking assistance through the braking torque of the motor () is disclosed. The control unit comprises several signal inputs for receiving the desired braking torque (MSET) and the number of revolutions (nACT) of the motor () and/or the vehicle speed; a calculation unit for determining the suitable transmission ratio (&#xfc;) of the transmission () for achieving the desired braking torque in accordance with the desired braking torque (MSET) and the number of revolutions (nACT) or the vehicle speed; and a signal output for outputting a control signal (&#xfc;) which determines the transmission ratio of the transmission (). An electrical generator () which feeds a battery () and which has an additional braking torque is located in the drive train. A measuring unit is provided for determining the charge status of the battery (), this measuring unit being connected to the calculation unit on the output side in order to regulate the transmission ratio of the transmission according to the charge status of the battery ().

Control unit for a transmission and associated operating method

A method of determining setpoint values in motor vehicles that have at least two drive assemblies. Torque setpoint values are determined in separate evaluation branches for each of the drive assemblies as a function of a variable that characterizes the driver's requirement and as a function of operating variables of the motor vehicle. The specific strengths and weaknesses of the respective drive assembly are taken into account directly in the respective evaluation branch.

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Hainsacker, Germany

Georg Grassl