Intensifier quill for fuel injector and fuel system using same

Details Intensifier quill for fuel injector and fuel system using same Intensifier quill for fuel injector and fuel system using same

2011-06-28

2011-06-28

Vo, Hieu T (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

Reexamination Certificate

active

07970526

ABSTRACT:
An intensifier quill for a fuel injector fluidly connects a fuel injector to a common rail. The intensifier quill selectively supplies fuel to the fuel injector at either an intensified pressure or un-intensified common rail pressure. Fuel supplied by the quill at both the intensified and un-intensified pressure passes through a quill body, which includes an actuation chamber, a control chamber and a pressurization chamber. Energizing an actuator of the quill allows fuel from the control chamber to flow to drain, increasing pressure inside the pressurization chamber and the fuel injector to intensified pressure. Upon energizing the actuator of the fuel injector, fuel injector injects fuel at the intensified pressure. When the quill's actuator is de-energized and the fuel injector's actuator is energized, fuel injector injects fuel at the un-intensified pressure.

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