Robert Boschgmbh

Achim Degel

Norbert Keim

Guido Pilgram

Michael Lingner

Markus Gesk

Manfred Roessler

Rolf Keller

Bernd Einwiller

Stefan Lauter

Thomas Dingler

A fuel injector for fuel injection systems of internal combustion engines includes a solenoid coil; an armature acted upon in a closing direction by a restoring spring; and a valve needle, which is connected to the armature in force-locking manner and on which a valve-closure member is formed, which forms a sealing seat together with a valve seat surface. The armature strikes against a stop face of an inner pole of the solenoid coil by way of a stop face, and the armature stop face is provided with a coating. The coating has a surface structure.

Fuel injector

Fuel injection valve

The invention relates to a method for operating a combustion engine () comprising a fuel-driven heat engine (), which permits a differentiation of faults during the supply of fuel. To this end, the fuel is supplied under pressure to the heat engine () via a fuel supply (). A pressure reduction speed in the fuel supply () is determined, and a fault is inferred based on a comparison of the pressure reduction speed with a predetermined threshold value.

Method for determining a fuel pressure related fault and operating an internal combustion engine based on the fault

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Illingen, Germany

Achim Degel