Bayerische Motoren Werke Aktiengesellschaft

Matthias Herger

Willibald Birzl

Franz Bichler

A method is provided for the early induction of an additional start of an internal combustion engine in a vehicle with a hybrid drive including at least one electric drive unit and one internal combustion engine. When only the electric drive is in operation, then the internal combustion engine is additionally started no later than when the determined requested nominal drive torque exceeds the maximum possible drive torque of the electric drive unit. In order to initiate an additional startup of the internal combustion engine before reaching or exceeding the maximum possible drive torque of the electric drive unit by way of the requested nominal drive torque, the still unfiltered driver request torque or a limited driver request torque is evaluated.

Method for the early induction of an additional start of an internal combustion engine in a vehicle with a hybrid drive

A process to be performed when starting the engine of a vehicle with an automated or automatic transmission and a vehicle brake which can be operated by way of external power is provided. In order to secure the vehicle against rolling away without any impairment of the operating comfort, situations are detected which express the imminent starting of the engine. The vehicle brake, particularly the service brake, is operated by way of external power before the starting of the engine for securely blocking the vehicle.

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Puchheim, Germany

Matthias Herger