Robert Bosch

Bjoern Noack

Udo Sieber

Reiner Schweinfurth

Nello Medoro

Stefan Kieferle

Daniel Henning

Michael Hackner

Oliver Becker

Antonio Diaferia

Christos Hondros

Bernd Frey

Dorothee Sommer

Charlotte Summerer

Daniel Zander

John Kuesters

Antonio De Benedictis

Ciro Medolla

Milos Hlavka

The invention relates to a method for operating a fuel injection system () for supplying a combustion engine of a vehicle with fuel, in which method the fuel is conveyed at high pressure with the aid of a high-pressure pump (), fed to a high-pressure accumulator (), and injected into a cylinder of the combustion engine with the aid of at least one injector connected to the high-pressure accumulator (). In order to detect any damage to the drive of the high-pressure pump (), according to the invention The invention further relates to an electronic control unit for carrying out the method.

Method for operating a fuel injection system for supplying a combustion engine with fuel, and electronic control unit

The fuel injection device for an internal combustion engine comprises a feed pump which has an electric drive, by which feed pump fuel is fed from a fuel storage tank into a low-pressure region to the suction side of at least one high-pressure pump. The high-pressure pump pumps fuel into a high-pressure region in which at least one injector is provided to inject the fuel into the internal combustion engine. The fuel injection is controlled by an electric control device. Arranged in the low-pressure region is a pressure sensor which is connected to the control device. The electric drive of the feed pump is activated by the control device in order to set a feed quantity of the feed pump which is variable as a function of at least one operating parameter of the internal combustion engine and/or of the high-pressure pump. The drive of the feed pump is in particular activated by the control device in such a way that, at a high load of the internal combustion engine and/or at a high rotational speed and/or at a high fuel temperature, a greater fuel quantity is fed by the feed pump into the low-pressure region than at a low load and/or a low rotational speed and/or a low fuel temperature.

Fuel injection device for an internal combustion engine

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Stuttgart, Germany

Bjoern Noack