Solenoid duty cycle modulation for dynamic control of refueling

Details Solenoid duty cycle modulation for dynamic control of refueling Solenoid duty cycle modulation for dynamic control of refueling

1985-07-19

1987-07-07

Dolinar, Andrew M.

Internal-combustion engines

Charge forming device

Having fuel vapor recovery and storage system

123489, F02M 2508

Patent

active

046779566

ABSTRACT:
Fuel vapors are purged from a vapor storage canister to the intake of an internal combustion engine by inducting air into the vapor canister, modulating the purge flow of an air and fuel vapor mixture from the canister, and establishing a predetermined magnitude of combustion exhaust emissions by gradually changing the magnitude of a transient flow between no purge flow and a full purge flow so that the amount of combustion exhaust emissions is maintained below the predetermined magnitude.

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patent: 4013054 (1977-03-01), Balsley et al.
patent: 4275697 (1981-06-01), Stoltman
patent: 4308842 (1982-01-01), Watanabe et al.
patent: 4326489 (1982-04-01), Heitert
patent: 4377142 (1983-03-01), Otsuka et al.

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