Patent ID: 6453875
Filing Date: 2002-09-24
Classification: F02M

Abstract:
A fuel injection system (1; 50; 61), having a pressure step-up unit (9; 52; 70) disposed between a pressure storage chamber (6; 51; 77) and a nozzle chamber (16), the pressure step-up unit having a pressure chamber (14; 37; 74) which communicates with the nozzle chamber (16) via a pressure line (20), and having a bypass line (28; 54) connected to the pressure storage chamber (6; 51; 77), wherein the bypass line (28; 54) communicates directly with the pressure line (20), wherein the step-up unit includes a differential chamber, and control of the pressure step-up unit (9) is effected hydraulically by imposition of pressure from the differential chamber.