Fluid sprinkling – spraying – and diffusing – Unitary plural outlet means – Insert at terminus forms plural streams
Patent
1991-12-18
1993-01-12
Kashnikow, Andres
Fluid sprinkling, spraying, and diffusing
Unitary plural outlet means
Insert at terminus forms plural streams
2395853, 2395903, 29890143, F02M 5108
Patent
active
051783320
ABSTRACT:
A fuel injection valve has a flat injection hole plate arranged downstream of a valve seat on which a valve body is seated. A plurality of injection holes are formed through the injection hole plate in such a manner that the injection holes are inclined with respect to the axis of the valve body, to thereby increase the distance from the axis of the valve body in the downstream direction. The diameter of the injection hole is from 0.17 to 0.35 mm, and the chamfer dimension R at the inlet of the injection hole on the inlet side of the injection hole plate at the side close to the axis of the valve body, is greater than or equal to 0.1 mm. Accordingly, the flow reistance on the fuel flowing into the injection hole can be reduced, to thus prevent a vaporization of fuel due to a vacuum evaporation. With such a construction, even when the fuel injection valve is disposed in a vacuum box maintained in a vacuum atmosphere and an inspection for vacuum characteristics performed by injecting fuel, a variation of the flow rate can be maintained with good characteristics under a small flow rate variation rate and therefore, the production yield of the fuel injection valve can be improved.
REFERENCES:
patent: 4621772 (1986-11-01), Blythe et al.
patent: 4646974 (1987-03-01), Sofianek et al.
patent: 4890794 (1990-01-01), Imafuku et al.
patent: 4923169 (1990-05-01), Grieb et al.
patent: 5044562 (1991-09-01), Rogers et al.
Kato Hideo
Tsukakoshi Masayoshi
Japan Electronic Control Systems Co. Ltd.
Kashnikow Andres
Merritt Karen B.
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