Zf Friedrichshafen Ag

Axel Bloching

Horst Leichsenring

A method for the provisional determination of the mass of a motor vehicle, for controlling a starting operation when the motor vehicle is at rest. The method determines the mass of the motor vehicle as a function of inclination information about the motor vehicle or the road on which the motor vehicle is located, and as a function of a force required for releasing an engaged parking lock while the motor vehicle is at rest.

Method for determining the mass of a motor vehicle

A method for actuating a parking lock of a motor vehicle including a piston () which is arranged to move axially within a cylinder () of a parking lock actuator () and is acted upon by pressure in order to disengage the parking lock. A nominal pressure target, for disengaging the parking lock, is continuously increased from a first pressure value (p) until the parking lock is either disengaged or until a maximum pressure value (p) is reached.

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Ravensburg, Germany

Axel Bloching