Electromagnetic fuel injector with magnetic stop member

Details Electromagnetic fuel injector with magnetic stop member Electromagnetic fuel injector with magnetic stop member

1985-03-25

1987-01-20

Peters, Jr., Joseph F.

Fluid sprinkling, spraying, and diffusing

Including valve means in flow line

Reciprocating

F02M 5106

Patent

active

046375546

ABSTRACT:
An engine fuel injector has a spring-biased valve member to be electromagnetically moved out of sealing engagement with a valve seat communicated with a fuel injection orifice. The movement of the valve member away from the valve seat is limited by engagement between a stationary stop member and a flange fixed to the valve member. The stop member and the flange have opposed faces to which magnets having the same polarity are attached to assure that the flange is kept closely spaced magnetically from the stop member during the time when the valve member is out of sealing engagement with the valve seat to cause liquid fuel to exist between the flange and the stop member at that time, whereby the squeeze force of the liquid fuel is reduced to shorten the time required for the valve-closing movement of the valve member.

REFERENCES:
patent: 2826390 (1958-03-01), Bailey
patent: 3796409 (1974-03-01), Burckhardt et al.
patent: 3967597 (1976-07-01), Schlagmuller et al.
patent: 4245789 (1981-01-01), Gray
patent: 4365747 (1982-12-01), Knapp et al.
patent: 4519547 (1985-05-01), Kolach et al.

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