Fuel injection system for internal combustion (IC) engine, uses one of two control valves to connect back area of pressure booster to leakage oil area, while other connects control chamber of fuel injection valve to another oil area

摘要

One of two control valves (30) connects the back area (23) opposite the pressure chamber (15) of a pressure booster (10) to one leakage oil area. The other control valve (52) connects the control chamber (48) opposite the valve seat (74) of a fuel injection valve (40) into another leakage oil area. The control valves individually use two-way valves.