Fuel injection valve having internal oil groove

Details Fuel injection valve having internal oil groove Fuel injection valve having internal oil groove

2006-07-25

2006-07-25

Look, Edward K. (Department: 3751)

Valves and valve actuation

Electrically actuated valve

Including solenoid

C239S585100, C239S585300

Reexamination Certificate

active

07080819

ABSTRACT:
A fuel injection valve includes a solenoid, which is filled with low-pressure oil. The solenoid receives a biasing means and a movable member. The movable member is actuated by the biasing means and magnetic force generated by the solenoid. The movable member includes a flat-plate portion that contacts with the solenoid and departs from the solenoid. The outer circumferential periphery of the flat-plate portion has multiple notches, through which low-pressure fuel flows into to the upper side of the flat-plate portion that has an oil passage groove, through which a center portion of flat-plate portion communicates with the outer circumferential portion of flat-plate portion. Each notch has a deepest portion that is radially most recessed from the outer circumferential periphery of the flat-plate portion. The oil passage groove is apart from a deepest portion of the notches.

REFERENCES:
patent: 4830286 (1989-05-01), Asslaender et al.
patent: 5636615 (1997-06-01), Shorey et al.
patent: 5820101 (1998-10-01), Ricco
patent: 6126094 (2000-10-01), Ricco

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