Fuel injector has the effective surfaces of the plungers bonded to bellows, so that there is no hydraulic force on the actuator from the fuel pressure

摘要

The fuel injection valve (1), for a direct fuel injection into the cylinder combustion zone of an internal combustion motor, has an effective surface of one plunger (8) bonded to a bellows (9) and the effective surface of a second plunger (11) bonded to a second bellows (12), so dimensioned that the resulting hydraulic force on the actuator (6) is generally about zero. The actuator is supported on a bearing mounting (7) at the inflow side, in one piece with the fixed connecting section (10) between the two housing parts (2,4).