Canister purge solenoid valve

Details Canister purge solenoid valve Canister purge solenoid valve

1989-05-11

1990-02-20

Rosenthal, Arnold

Valves and valve actuation

Electrically actuated valve

Including solenoid

25112905, F16K 3106

Patent

active

049019740

ABSTRACT:
A canister purge solenoid valve is constructed and arranged to provide reduced operating noise and decreased armature wear as the armature reciprocates within a bore in response to solenoid energization and de-energization. The armature contains an elastomeric valve head that is biased normally closed against the valve seat. When the solenoid assembly is energized, the armature is retracted. The armature's momentum is initially absorbed by the elastomeric valve head making contact with the solenoid assembly at one end of the bore. Final absorption of the armature's momentum is shared by continuing contact of the valve head with the solenoid assembly and by an elastomeric limit stop that is disposed between the armature and the stator. In this way the elastomeric limit stop is not required to absorb the full momentum of the retracting armature.

REFERENCES:
patent: 3013768 (1961-12-01), La Mastra
patent: 4582294 (1986-04-01), Fargo

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