Robert Boschgmbh

Eberhard Frech

Wolfgang Wagner

Werner Hess

Lutz Reuschenbach

Thomas Edelmann

Bernhard Schray

Joerg Kerner

Lothar Gamer

Ekkehard Feldmann

Martin Froehlich

Alois Moser

A diagnostic tester for motor vehicles is described, and programmable control units having self-diagnostic means are provided for in the motor vehicle that, in program-controlled fashion, control, monitor the engine control and other systems of the motor vehicle, generate error codes and store them, and which can be connected to an external diagnostic tester via a diagnostic/test plug in the motor vehicle. The external diagnostic tester is equipped with a program recognition and program loading device. The program version contained in the connected control unit is queried and recognized using the program recognition device. Then, if the program available in the motor vehicle and recognized via the diagnostic/test plug, available in the connected control unit of the motor vehicle is not stored in the latest and most current version, the respective latest version is loaded by the program loading device into the program storage device of the corresponding control unit.

Diagnostic test device for motor vehicle with programmable control devices

The invention is directed to a method and an arrangement for operating an internal combustion engine wherein the vapor pressure curve is determined with a pressure sensor in the fuel metering pipe during the shutoff phase of the engine and the fuel injection quantity in a subsequent start of the engine is corrected in correspondence to this pressure curve.

Method and arrangement for operating an internal combustion engine

A method and an arrangement for operating a drive unit of a vehicle are suggested. A desired value is preset and an actual value corresponding to the desired value is determined. The desired value is filtered in at least one operating situation. At the start of filtering, the filter is initialized with the determined actual value.

Method and device for the operation of a drive unit on a vehicle

Method for checking vehicle component systems in motor vehicles

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Kirchheim, Germany

Eberhard Frech