Bayerische Motoren Werke Aktiengesellschaft

B Ayerische M Otoren W Erke a Ktiengesellschaft

Dirk Abendroth

Peter Straehle

Werner Weigl

Peter STRÄHLE

A method is provided for detecting a tow start operation of an internal combustion engine in a motor vehicle. In this case, a signal representing the activity and/or inactivity of a starter unit of the internal combustion engine is detected. A tow start operation of the internal combustion engine is determined when, following detection of a successful start-up process of the internal combustion engine, the signal representing the activity and/or inactivity of the starter unit has not displayed any activity of the starter unit since the beginning of the start-up process of the internal combustion engine.

Method for detecting a tow start operation of an internal combustion engine

A method controls an automatic shut-off process of an internal combustion engine having a start/stop device, when predetermined shut-off conditions are satisfied by corresponding influential variables, and controls a start-up process, when predetermined start-up conditions are satisfied by corresponding influential variables. Variables influencing the evaluation of the shut-off and/or start-up conditions include the presence of a vehicle key, the state of a tank ventilation system, the fuel tank fill level, the state of a diesel particulate filter, an activity state of a workshop mode, works mode, service mode and/or production mode, the current ambient temperature outside the vehicle, an evaluation of a device for detecting the occupancy, the detection of a cylinder synchronization process, an activity state of a driving speed control system, an auto hold function in vehicles with automatic transmissions, an electric parking brake, and/or a hill hold function.

Method for controlling an automatic shut-off process and/or start-up process of an internal combustion engine in a motor vehicle

A method and a start control device are provided for controlling an automatic start-up process of a drive unit of a motor vehicle. The drive unit is automatically started when all of the predetermined start-up conditions are fulfilled. However, even in the event that an absence of the driver is detected, the drive unit automatically starts when the speed of the motor vehicle is greater than a predetermined limit speed and all other start-up conditions are fulfilled.

Method and start control device for controlling an automatic start-up process of a drive unit

A method is provided for controlling an automatic shut-off process of an internal combustion engine in a motor vehicle. An automatic shut-off process of the internal combustion engine is inhibited as a function of predetermined operating conditions. The automatic shut-off process of the internal combustion engine is inhibited, if the internal combustion engine was started by a tow start process within a current operating cycle or within a predetermined number of previous operating cycles.

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Munich, Germany

Dirk Abendroth