Siemens Aktiengesellschaft

Joachim Schafer

Friedrich Graf

Michael Ulm

Kai Storjohann

A control for a motor vehicle includes a transmission control and an engine control which are connected to one another through a communication channel. Functional units of the transmission control which are dependent on data of an engine and of a chassis of the motor vehicle, so-called engine-specific and chassis-specific functional units, are integrated into the engine control. Functional units having a function which is dependent on data of the transmission, so-called transmission-specific components, are contained in a computer-controlled gear shifting configuration. Data which are necessary for controlling the transmission are exchanged between the engine control and the gear shifting configuration through the communication channel 6. A shift point selection control, which can be constructed as a fuzzy control, is contained in the engine control.

Control for a motor vehicle with an automotive transmission and a smart

A control unit includes a transmission control unit and an engine control unit which are connected to one another through a communication channel. Functional units of the transmission control unit which are dependent on data from the engine and the chassis of the motor vehicle, so-called engine-specific and chassis-specific functional units, are integrated into the engine control unit. Functional units performing an operation that is dependent on data from the transmission, so-called transmission-specific components, are contained in a computer-controlled transmission ratio changing device. Data which are necessary for controlling the transmission, data for selecting or determining the transmission ratio of the transmission and configuration parameters for adapting the control unit to the respective motor vehicle, are exchanged between the engine control unit and the transmission ratio changing device through the communication channel. A shift-point selection control unit, which may be constructed as a fuzzy control unit, is contained in the engine control unit.

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Rain, Germany

Joachim Schafer