Patent ID: 6908043
Filing Date: 2005-06-21
Classification: F02M

Abstract:
1. In a fuel injection system for internal combustion engines, having a plurality of injection valves ( 4 ; 104 ), each provided in a respective fuel injection line ( 3 ), which valves each have one nozzle chamber ( 13 ), one control chamber ( 17 ; 117 ), one valve member ( 8 ; 108 ), which controls the injection openings ( 12 ) of the nozzle chamber ( 13 ) and which is actuatable counter to the action of a closing spring ( 10 ; 110 ) via a first control face ( 14 ), located in the nozzle chamber ( 13 ) and acting in the valve opening direction, and via a second control face ( 16 ; 116 ), located in the control chamber ( 17 ; 117 ) and acting in the valve closing direction, one piston ( 2 ), displaceable in the compression direction, which on its face end defines a first compression chamber ( 18 ), communicating with the injection line ( 3 ), for generating the injection pressure, one first valve ( 25 ) for controlling the pressure buildup in the first compression chamber ( 18 ), and one second valve ( 26 ) for controlling the pressure buildup in the control chamber ( 17 ; 117 ), the improvement wherein the piston (