Regulated canister purge solenoid valve having improved purging

Details Regulated canister purge solenoid valve having improved purging Regulated canister purge solenoid valve having improved purging

1991-02-15

1991-12-03

Wolfe, Willis R.

Internal-combustion engines

Charge forming device

Having fuel vapor recovery and storage system

123516, 123518, 1375991, 13751627, F02M 3302

Patent

active

050691880

ABSTRACT:
Improved idle purging is obtained in a regulated canister purge solenoid valve by communicating the atmospheric chamber space of the regulator mechanism to atmosphere through the canister and providing in the movable wall of the regulator mechanism an orifice which is closed by abutment of a surrounding portion of the movable wall with an internal surface of the atmospheric chamber space when the engine is off, but is opened when that surrounding portion of the movable wall leaves that internal surface of the atmospheric chamber space upon engine running.

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