Electromagnetic valve for the dosage of fuel in an internal...

Details Electromagnetic valve for the dosage of fuel in an internal... Electromagnetic valve for the dosage of fuel in an internal...

2008-02-29

2010-12-07

Fristoe, Jr., John K (Department: 3753)

Valves and valve actuation

Electrically actuated valve

Including solenoid

C335S297000, C335S299000

Reexamination Certificate

active

07845617

ABSTRACT:
An electromagnetic valve for the dosage of fuel in an internal combustion engine; the electromagnetic valve is provided with: a cylindrical tubular valve body; an obturator, which is arranged within the tubular valve body and is mobile between an open position and a closed position; and an electromagnetic actuator to shift the obturator and comprising a coil arranged outside the tubular valve body, a fixed magnetic pole is arranged within the tubular valve body, a mobile keeper arranged within the tubular valve body, mechanically connected to the obturator and is adapted to be magnetically attracted by the magnetic pole when the coil is excited, a tubular magnetic armature arranged outside the tubular valve body around the coil, and a magnetic washer having an annular shape arranged above the coil between the tubular valve body and the tubular magnetic armature to guide the closing of the magnetic flow around the coil.

REFERENCES:
patent: 6421519 (2002-07-01), Yamashita et al.
patent: 7114472 (2006-10-01), Kondo
patent: 7331565 (2008-02-01), Mills et al.
patent: 7472886 (2009-01-01), Shimane et al.
patent: 2002/0130206 (2002-09-01), Kobayashi et al.
patent: 2005/0023384 (2005-02-01), Kobayashi
patent: 2000008990 (2000-01-01), None
patent: WO2006010665 (2006-02-01), None

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