Fuel injection valve with restriction wall, and internal...

Details Fuel injection valve with restriction wall, and internal... Fuel injection valve with restriction wall, and internal...

2007-09-04

2007-09-04

Hwu, Davis (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Fluid pressure responsive discharge modifier* or flow...

Fuel injector or burner

C239S088000, C239S461000, C239S463000, C239S468000, C239S533120, C239S585100, C239S585200, C239S585300, C239S585400, C239S585500, C239S601000

Reexamination Certificate

active

11022787

ABSTRACT:
Using a swirl type fuel injection valve, a concentrated spray area and a thin spray area are formed, the positions thereof are adjusted, and the spray is made to conform to the geometric shape of the engine and mounting position of the fuel injection valve, so as to reduce the fuel consumption and control the unburnt components in exhaust gas. The fuel injection valve is so constructed that a step is formed on the injection hole opening of the fuel injection valve, so as to provide two or more edge transition portions at the injection hole opening, resulting from the step, and the line connecting the edge transition portions forms an oblique angle relative to the wall formed by the step perpendicular to the injection hole center axis and the angled wall.

REFERENCES:
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patent: 6668793 (2003-12-01), Okamoto et al.
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patent: 1 036 933 (2000-09-01), None
patent: 05164019 (1993-06-01), None
patent: 6-146886 (1994-05-01), None
Miyajima, et al., “Experimental and Numerical Approach to Fuel Spray Control for Fuel Injectors”, F2000A100, Seoul 2000 FISITA World Automotive Congress, Jun. 12-15, 2000, Seoul, Korea, pp. 1-8.
EPO Search Report, Dated Feb. 17, 2004.

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