Electromagnetically actuatable fuel injection valve

Details Electromagnetically actuatable fuel injection valve Electromagnetically actuatable fuel injection valve

1986-02-21

1987-03-31

Rosenthal, Arnold

Valves and valve actuation

Permanent or constantly energized magnet actuator

25112915, 239452, 239585, F16K 3108, F02M 5106

Patent

active

046537201

ABSTRACT:
An electromagnetically actuatable fuel injection valve which serves to supply fuel to a mixture-compressing internal combustion engine having externally supplied ignition. The fuel injection valve includes a valve housing having an outlet tube in which a valve seat body is disposed. Respective magnetic coils are disposed on pole pieces and a permanent magnet is disposed between the pole portions of the pole pieces. In the valve seat body a flow bore is provided, which merges via a stop face with a guide bore, in which a ball-shaped armature is slidably disposed. A valve needle which is joined with the armature protrudes through the flow bore and, with a closing head, cooperates with a valve seat in the valve seat body. Directly upstream of the closing head a metering collar is provided on the valve needle, an annular metering gap being formed between the metering collar and the wall of the flow bore. The valve needle is supported in pendulum fashion in the flow bore via the ball-shaped armature and, when the valve is opened, it is centered in the flow bore by the fuel flowing therein.

REFERENCES:
patent: 2901185 (1959-08-01), Dickey
patent: 3249308 (1966-05-01), Cadiou
patent: 3368761 (1968-02-01), Pelizzoni
patent: 4423841 (1984-01-01), Palma
patent: 4454990 (1984-06-01), Lewis
patent: 4546339 (1985-10-01), Kubach
patent: 4575008 (1986-03-01), Kaczynski

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