Dr. Ing. H.c. F. Porsche Aktiengesellschaft

Wolfgang Benz

Stephan Mueller

Sven Gohl

A drive train () of a motor vehicle has an internal combustion engine () with a crankshaft (). A transmission () is connected downstream for driving at least one axle () of the motor vehicle. A starter generator () is attached to the crankshaft () of the internal combustion engine () via a spur gear mechanism (). The spur gear mechanism () has a first drive train () with a switchable clutch () and a second drive train () with a switchable clutch or a freewheel () that is active during the starter mode of the starter generator (). In a drive train of this type, the components for transmitting the torque of the starter generator () require only little space and, during starting, the crankshaft () of the internal combustion engine is decoupled from tensile forces and weights which would be observed when a belt drive is used.

Drive train of a motor vehicle having an internal combustion engine and a starter generator

A drive train () of a motor vehicle has an internal combustion engine () with a crankshaft (). A transmission () is connected downstream of the internal combustion engine () to drive at least one axle () of the motor vehicle. A starter generator () is assigned to the internal combustion engine (). The starter generator () is attached to the crankshaft () by two separate drive trains (). One () of the drive trains () has a shiftable clutch () and the other () of the drive trains () has a shiftable clutch () or a freewheel () that is active during a starter mode of the starter generator (). The drive train ensures an optimum start capability of the cold internal combustion engine and additionally permits electric boosting of the internal combustion engine.

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Leinfelden-Echterdingen, Germany

Wolfgang Benz