Robert Boschgmbh

Marcel Matischok

Jens Wolber

Andreas Posselt

Timm Hollmann

Marko Lorenz

Matthias Walz

Karsten Hinn

In the operation of a fuel system of an internal combustion engine, the fuel is compressed by a fuel pump and travels by way of at least one fuel injection device into at least one combustion chamber of the internal combustion engine. It is proposed that at least periodically during a phase immediately when starting or just after starting the internal combustion engine, the fuel pump is actuated corresponding to an increased set point pressure. An increase in the set point pressure, however, is blocked if at least one blocking condition is met.

Procedure to operate a fuel system of an internal combustion engine

A procedure to recognize a depressurized fuel system of a motor vehicle with an internal combustion engine that includes a parameter characterizing the fuel system temperature is acquired when turning off the internal combustion engine; a parameter characterizing the fuel system temperature is acquired in the immediately subsequent driving cycle when starting the internal combustion engine; and from the difference between the shut-down temperature and the starting temperature, the pressure in the fuel system is inferred.

Procedure to recognize a depressurized fuel system

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Stuttgart, Germany

Marcel Matischok