Patent ID: 7267107

Claim:
A fuel injection system ( 3 , 17 , 20 ) of an internal combustion engine, the system comprising at least one local cam driven pump element ( 1 ) per engine cylinder, associated with each injector ( 2 ), of a unit fuel injector or a pump-line-nozzle system for compressing the fuel, a supply line from the pump element supplying fuel to the injector ( 2 ), the injector ( 2 ) and/or the supply line to the injector ( 2 ) forming a local pressure reservoir chamber, a check valve ( 9 ) integrated into the supply line from the pump element ( 1 ) to the injector ( 2 ), a control valve ( 8 ) located upstream of the cam driven pump element for generating high pressure in the closed state of the control valve ( 8 ) during the cam stroke, and a throttle ( 16 ; 18 ) for controlling the pressure decrease of a nozzle chamber ( 11 ) of the injector.