Fluid sprinkling – spraying – and diffusing – Including valve means in flow line – Reciprocating
Patent
1994-05-05
1995-12-19
Grant, William
Fluid sprinkling, spraying, and diffusing
Including valve means in flow line
Reciprocating
2395851, 23953311, F02M 5108
Patent
active
054762260
ABSTRACT:
A valve element is slidably disposed in a guide bore in a valve casing, forming a fuel injection valve which is opened or closed by means of a valve seat of the valve casing and a contact portion of the valve element. When the valve element is in the valve open position, a first fuel adjusting passage is formed between the valve seat and the contact portion. A sliding contact portion is provided on the upstream side of the contact portion of the valve element, and a brim portion is provided on the further upstream side thereof. Flat portions are formed on the outer peripheral surface of the sliding contact portion, and adjusting surfaces are formed on the outer peripheral surface of the brim portion. Second fuel adjusting passages are formed between the fuel adjusting surfaces of the brim portion and the guide bore, and third fuel adjusting passages are formed between the flat portions of the sliding contact portion and the guide bore. The relationship between the pressure loss percentage P2 of the second fuel adjusting passages and the pressure loss percentage P3 of the third fuel adjusting passages is determined as P2 .gtoreq.P3.gtoreq.6% of the total pressure loss.
REFERENCES:
patent: 3368761 (1968-02-01), Pecizzoni
patent: 4519547 (1985-05-01), Kubach et al.
patent: 4651931 (1987-03-01), Hans et al.
patent: 4779838 (1988-10-01), Greiner et al.
patent: 5161743 (1992-11-01), Takeda
Kiuchi Hideo
Tomiita Yukio
Grant William
Nippondenso Co. Ltd.
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