Patent ID: 7387109

Claim:
A high-pressure fuel pump for an internal combustion engine, the pump comprising at least one pump element ( 127 ) with a pumping chamber ( 133 ), for pumping fuel from an intake side ( 103 ) to a compression side ( 105 ) of the high-pressure fuel pump ( 101 ), a device (ZME) on the intake side for controlling the supply quantity of the high-pressure fuel pump ( 101 ), a first check valve ( 135 ) disposed on the intake side, said first check valve having an inlet and an outlet, and a second check valve ( 137 ) disposed on the compression side, wherein the pumping chamber ( 133 ) is located hydraulically between the first check valve and the second check valve, and wherein the outlet of the first check valve communicates directly hydraulically with the pumping chamber ( 133 ) of the pump element ( 127 ), and a relief device operable counter to the flow direction of the first check valve ( 135 ) enabling an at least partial pressure equilibrium between the inlet and outlet of the first check valve ( 135 ), wherein a fuel metering unit (ZME) serves as the device (ZME) on the intake side for controlling the supply quantity of the high-pressure fuel pump ( 101 ); wherein the fuel metering unit has a regulating valve ( 11 ), actuated by an electromagnet ( 10 ) by means of an armature bolt ( 14 ), with a valve piston ( 25 ); and wherein the first check valve ( 135 ) can be opened by the armature bolt ( 14 ).