Hydraulically actuated injector with delay piston and method...

Details Hydraulically actuated injector with delay piston and method... Hydraulically actuated injector with delay piston and method...

2005-08-02

2005-08-02

Hwu, Davis (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Unitary injection nozzle and pump or accumulator plunger

C239S533200, C239S533300, C239S585100, C239S585500

Reexamination Certificate

active

06923382

ABSTRACT:
An oil activated fuel injector which provides a pilot quantity of fuel prior to the main fuel injection event. The oil activated fuel injector includes a delay piston assembly in fluid communication with a high pressure chamber of the fuel injector. The pilot quantity of fuel flows through the delay piston during a pre stroke of the plunger. The oil activated fuel injector reduces engine emissions and noise, and eliminates the need for additional working fluid to be provided therein in order to provide a pilot quantity of fuel.

REFERENCES:
patent: 3392715 (1968-07-01), Thoma
patent: 4367706 (1983-01-01), Scheying
patent: 4811899 (1989-03-01), Egler
patent: 4975029 (1990-12-01), Hatz
patent: 5074766 (1991-12-01), Kochanowski
patent: 5209208 (1993-05-01), Siebert et al.
patent: 5492098 (1996-02-01), Hafner et al.
patent: 6067955 (2000-05-01), Boecking
patent: 6085726 (2000-07-01), Lei et al.

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