Flow damper

Details Flow damper Flow damper

2007-12-11

2009-02-10

Gimie, Mahmoud (Department: 3747)

Internal-combustion engines

Charge forming device

Fuel injection system

C123S510000

Reexamination Certificate

active

07487759

ABSTRACT:
A flow damper includes a valve body, a piston, a spring, and a cap. The valve body is fastened to the rail main body and has a fuel passage therein. The fuel passage communicates between a fuel hole of the rail main body and the injector. The fuel passage includes a piston sliding hole on its rail main body-side. The piston is slidably held on an inner circumferential surface of the piston sliding hole. The spring urges the piston in an opposite direction from a direction of fuel flowing through the fuel passage. The cap includes a small diameter portion and a large diameter portion. The small diameter portion is fitted into the inner circumferential surface of the piston sliding hole with a gap between the small diameter portion and the piston sliding hole. The large diameter portion is located between the valve body and the rail main body.

REFERENCES:
patent: 5692476 (1997-12-01), Egler et al.
patent: 6357415 (2002-03-01), Mori
patent: 7066148 (2006-06-01), Nishiwaki
patent: 7216631 (2007-05-01), Nishiwaki et al.
patent: 2006/0090736 (2006-05-01), Nishiwaki et al.

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