Fuel rail damper

Details Fuel rail damper Fuel rail damper

1998-05-28

2000-03-07

Moulis, Thomas N.

Internal-combustion engines

Charge forming device

Fuel injection system

138 30, F02M 4100

Patent

active

060326514

ABSTRACT:
A fuel system damper for damping fuel pressure pulsations in a fuel rail includes a solid, flexible diaphragm which separates an upper chamber from a lower chamber. The upper chamber is sealed and contains a spring which is biased against the diaphragm. The lower chamber has an outlet to permit fuel to communicate with the diaphragm. The upper flange of the lower chamber extends inward at an angle to form a radial shoulder, and the diaphragm rests against and is supported by the shoulder. An attachment clip is fixedly attached between the upper and lower chambers and is positioned to securely engage the damper to a fuel injector cup.

REFERENCES:
patent: 4205637 (1980-06-01), Ito et al.
patent: 4373872 (1983-02-01), Kemmner et al.
patent: 4562816 (1986-01-01), Dorr
patent: 4679537 (1987-07-01), Fehrenbach et al.
patent: 4991557 (1991-02-01), DeGrace et al.
patent: 5088463 (1992-02-01), Affeldt et al.
patent: 5111794 (1992-05-01), DeGrace, Jr.
patent: 5146896 (1992-09-01), Imoehl et al.
patent: 5301647 (1994-04-01), Lorraine

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