Method of manufacturing a fuel injection valve

Details Method of manufacturing a fuel injection valve Method of manufacturing a fuel injection valve

2007-04-17

2007-04-17

Hwu, Davis (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Fluid pressure responsive discharge modifier* or flow...

Fuel injector or burner

C239S585100, C239S585300, C239S585500, C239S088000, C239S090000, C239S091000, C239S092000, C239S093000

Reexamination Certificate

active

10960937

ABSTRACT:
A fuel injection valve has: a tubular body, a valve seat member, a valve body, a core tube, a bias spring, and an electromagnetic actuator. The core tube is press fitted into the tubular body. The core tube has a first end side opposing an absorption section of the valve body in such a manner as to form an axial gap interposed between the first end side of the core tube and the absorption section. The core tube has a second end side axially extending in the tubular body to a certain position on a way to the second end side of the tubular body. The axially extending second end side of the core tube has an outer periphery which is formed with a reduced diameter section for increasing an accuracy in positioning the core tube when the core tube is press fitted into the tubular body.

REFERENCES:
patent: 3567135 (1971-03-01), Gebert
patent: 3865312 (1975-02-01), Lombard et al.
patent: 4946107 (1990-08-01), Hunt
patent: 5649354 (1997-07-01), Fujii et al.
patent: 2000-8990 (2000-01-01), None

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