Device for supplying high pressure fuel to an internal...

Details Device for supplying high pressure fuel to an internal... Device for supplying high pressure fuel to an internal...

2006-03-14

2006-03-14

Nguyen, Dinh Q. (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Fluid pressure responsive discharge modifier* or flow...

Fuel injector or burner

C239S533300, C239S533400, C239S088000

Reexamination Certificate

active

07011256

ABSTRACT:
A device for supplying fuel at high pressure to an internal combustion engine, having a pistonlike element which is disposed longitudinally displaceably in a bore of a component. The pistonlike element is guided with a sealing portion in a guide portion of the bore, and the guide portion discharges at one end into a pressure chamber that can be filled with fuel at high pressure and at the other end into a leak fuel chamber. At least one channellike recess is embodied on the sealing portion of the pistonlike element, or the guide portion and this recess communicates hydraulically with the pressure chamber and is sealed off from the leak fuel chamber, except for the annular gap formed between the pistonlike element and the inner wall of the guide portion, and as a result the pistonlike element is hydraulically centered in the bore.

REFERENCES:
patent: 4669659 (1987-06-01), Leblanc et al.
patent: 6053432 (2000-04-01), Stevens
patent: 6189817 (2001-02-01), Lambert
patent: 6283389 (2001-09-01), Hofmann
patent: 6776358 (2004-08-01), Arimoto
patent: 198 20 264 (1999-11-01), None
patent: 1 041 274 (2000-10-01), None

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