Fuel injection valve for internal combustion engines

Details Fuel injection valve for internal combustion engines Fuel injection valve for internal combustion engines

1996-12-19

1998-04-28

Weldon, Kevin

Fluid sprinkling, spraying, and diffusing

Fluid pressure responsive discharge modifier* or flow...

Fuel injector or burner

2395339, 2395855, F02M 4500, F02M 6106

Patent

active

057434700

ABSTRACT:
A fuel injection valve for internal combustion engines includes a valve member, which is axially displaceable in a bore of a valve body and which on its end toward the combustion chamber of the engine has a conical valve sealing face. The conical valve sealing faced cooperates with a conical valve seat face on the closed end of the bore of the valve body toward the combustion chamber. Between the cone angles of the valve sealing face and the valve seat face, a seat angle difference is provided, by which an encompassing seat edge is formed between the valve member and the valve body, and having at least one injection port in the region of the valve seat phase adjoins the seat edge downstream thereof. For a reliable, defined line of contact on the sealing edge formed by the seat edge, the annular gap adjoining the seat edge downstream thereof, between the valve seat face and the valve sealing face of the valve member is enlarged by an encompassing radial recess between the seat edge and the inlet opening of the injection port.

REFERENCES:
patent: 4139158 (1979-02-01), Uchida
patent: 4365746 (1982-12-01), Tanasawa et al.
patent: 4524914 (1985-06-01), Kaibara et al.
patent: 5163621 (1992-11-01), Kato et al.
patent: 5211340 (1993-05-01), Yoshizu

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