Electromagnetically actuatable fuel injection valve

Details Electromagnetically actuatable fuel injection valve Electromagnetically actuatable fuel injection valve

1987-11-24

1989-02-28

Rosenthal, Arnold

Valves and valve actuation

Electrically actuated valve

Including solenoid

239585, 251 65, F16K 3108, F02M 5106

Patent

active

048078468

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 with a mouth piece in which a valve seat body is disposed, two magnet coils two cores and one armature, which has a spherical guide section and is connected to a valve needle. The spherical guide section is slidably supported with its circumference in a guide bore of the valve seat body and in its stroke movement away from the core is limited by a tapering stop opening which adjoins the guide bore. A plastic bushing is mounted on a guide step of the valve seat body and is pressed by a spring against the core end face, thereby preventing a dirct flow of fuel to the remnant air gap on the armature, as a result of which the depositing of soil particles in the gap is avoided.

REFERENCES:
patent: 4653720 (1987-03-01), Knapp et al.

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