Fuel injection device for internal combustion engine

Details Fuel injection device for internal combustion engine Fuel injection device for internal combustion engine

2005-12-20

2005-12-20

Yu, Justine R. (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Fluid pressure responsive discharge modifier* or flow...

Fuel injector or burner

C239S533200, C239S533110, C239S585100, C239S585500

Reexamination Certificate

active

06976643

ABSTRACT:
In a fuel injection device, a valve seat is formed on an inner peripheral surface of a valve body. The valve seat and a contacting portion of a needle form a sealing portion. Virtual perpendicular lines, which cross the sealing portion and are perpendicular to the inner peripheral surface of the valve body, intersect with each other at an intersecting point on a movable core side. The intersecting point is positioned between a first end of a guiding portion on a sealing portion side and a second end of the guiding portion opposite from the sealing portion. An end of the needle on a contacting portion side rotates around the intersecting point. Contact between the needle and the guiding portion is inhibited by positioning the intersecting point near the guiding portion.

REFERENCES:
patent: 5516047 (1996-05-01), Kubach et al.
patent: 5762272 (1998-06-01), Tani et al.
patent: 2001/0040194 (2001-11-01), Yamaguchi et al.
patent: 2839708 (1998-10-01), None

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