Fuel injection valve

Details Fuel injection valve Fuel injection valve

1989-02-10

1990-02-27

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

Fluid pressure responsive discharge modifier* or flow...

Fuel injector or burner

239585, F02M 6112

Patent

active

049038982

ABSTRACT:
A fuel injection valve which is used to inject fuel into the intake tube of a mixture compressing internal combustion engine having externally supplied ignition. The fuel injection valve includes a nozzle body, in which a valve seat face is embodied. Cooperating with the valve seat face is a valve needle on which an armature that is electromagnetically actuated by a magnet coil is secured. The valve needle has a first guide section and a second guide section. A flat plate is disposed downstream of the valve seat face and four bores spaced apart from one another by equal intervals are provided in the flat plate. The guide sections have faces extending approximately in the direction of the longitudinal axis of the valve, which are distributed uniformly over the circumference of the guide sections and give the guide sections the shape of pentagons, so that the equality of distribution of the ejected fuel mass at the fuel injection cone is improved and the static flowthrough quantity is less dependent on the angular position of the valve needle. The number of bores on the flat plate is one less than the number of faces on each guide section.

REFERENCES:
patent: 4230273 (1980-10-01), Claxton et al.
patent: 4266729 (1981-05-01), Kulke et al.
patent: 4509693 (1985-04-01), Nakai
patent: 4621772 (1986-11-01), Blythe et al.
patent: 4625919 (1986-12-01), Soma et al.
patent: 4637554 (1987-01-01), Takeda
patent: 4646974 (1987-03-01), Sofianek et al.
patent: 4699323 (1987-10-01), Rush et al.

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