Injector

Details Injector Injector

1998-01-09

1999-11-30

Weldon, Kevin

Fluid sprinkling, spraying, and diffusing

Fluid pressure responsive discharge modifier* or flow...

Fuel injector or burner

F02M 4702

Patent

active

059927674

ABSTRACT:
An injector is disclosed which comprises a valve needle engageable with a seating. A spring urges the needle towards its seating, the spring engaging a spring abutment. A pressure backing member positioned within the injector is slidable relative to the spring abutment under the action of the pressure of fuel applied thereto. The pressure backing member is engageable with a surface associate with the needle to urge the needle towards its seating. The slidable pressure backing member reduces the pressure in the pumping chamber both prior to and after termination of the injection process. Also, the backing member maintains the pressure in a fuel supply passage of a low level to enhance the efficiency of the injector.

REFERENCES:
patent: 2243011 (1941-05-01), L'Orange
patent: 3738576 (1973-06-01), O'Neill
patent: 3797753 (1974-03-01), Fenne et al.
patent: 4225088 (1980-09-01), Kulke et al.
patent: 4566635 (1986-01-01), Trachte
patent: 4635854 (1987-01-01), Ishibashi
patent: 4962887 (1990-10-01), Matsuoka
patent: 5282574 (1994-02-01), Koch

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