Fuel injector with pressure balancing valve

Details Fuel injector with pressure balancing valve Fuel injector with pressure balancing valve

2008-04-08

2008-04-08

Gimie, Mahmoud (Department: 3747)

Internal-combustion engines

Charge forming device

With fuel pump

C123S506000, C239S102200

Reexamination Certificate

active

07353806

ABSTRACT:
A fuel injector device, for injecting fuel into a combustion chamber of an internal combustion engine, has a nozzle valve and nozzle valve control assembly adapted to use a control valve and high pressure fuel in the fuel injector in order to actuate movement of the nozzle valve between an open position to inject fuel and a closed position to terminate fuel injection. The nozzle valve control assembly employs a pressure balancing control valve so that the fuel pressure exerts a zero net force on the control valve in a dimension along which the control valve moves. Thus, the actuation occurs independently of the fuel pressure. In addition, the actuator is operably connected to the control valve by at least a hydraulic linkage, where the hydraulic linkage compensates for changes in the actuator and the injector body due to changes in temperature.

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