Robert Boschgmbh

Marcus Kristen

Andreas Dutt

Achim Koehler

Walter Fuchs

Sascha Ambrock

Armin Merz

Christian Langenbach

Marco Lamm

Otto Mueller

Dietmar Ottenbacher

Joerg Wuerz

Bertram Schweitzer

Saban Akmese

Karl-Heinz Traub

Markus Grieb

Stefanie Geiselhart

The invention relates to a method for supplying a high-pressure pump () in a fuel injection system of an internal combustion engine with fuel, wherein for delivery and for controlling the delivered quantity a delivery pump () is used, wherein said delivery pump is arranged in a low-pressure circuit () and operated by an electric motor and by means of which, depending on the respective selected engine speed, a certain quantity of fuel is fed to the high-pressure pump (), in which the fuel is first compressed and then fed to a fuel high-pressure accumulator (). According to the invention, the fuel pressure on the intake side of the high-pressure pump () is controlled by means of a pressure control valve (), wherein a supply of the high-pressure pump () with fuel for lubrication and/or cooling via the low-pressure circuit () and the delivery pump () is assured when the pressure control valve () is in the closed position. The invention further relates to a fuel injection system.

Method for supplying a high-pressure pump in a fuel injection system of an internal combustion engine with fuel and fuel injection system

The invention relates to a high-pressure fuel pump comprising a drive shaft supported by bearings, and fuel flows through the bearings in a forced manner in such a way that the mechanical and thermal load-carrying capacity of the bearings, and thus the entire high-pressure fuel pump, is significantly increased.

Fuel injection system for an internal combustion engine

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Eberdingen, Germany

Marcus Kristen