Internal-combustion engines – Charge forming device – Having fuel vapor recovery and storage system
Patent
1992-12-23
1993-12-28
Miller, Carl S.
Internal-combustion engines
Charge forming device
Having fuel vapor recovery and storage system
123516, F02M 3704
Patent
active
052730182
ABSTRACT:
An evaporation fuel control apparatus of the engine is provided for reducing the influence on the air fuel ratio control of an increase in the purge after the start of the engine in the situation where the evaporation fuel is in an extreme over-adsorbing state. A canister is arranged in the way of the air ventilation passage for communicating the intake passage of the engine and the fuel tank, the purge control valve is arranged in the way of the air ventilation passage between the canister and the intake passage, and the temperature sensor to detect the temperature state of the engine is provided. There is provided a control unit for starting the purge of the evaporation fuel adsorbed and held to the canister in the situation where the temperature that is detected by the temperature sensor exceeds the set temperature and for controlling the purge control valve so as to reduce the purge amount of the evaporation fuel until the elapsed time from the start of the purge elapses the set time.
REFERENCES:
patent: 4809667 (1989-03-01), Uranashi
patent: 4977881 (1990-12-01), Abe
patent: 5150686 (1992-09-01), Okawa
Miller Carl S.
Suzuki Motor Corporation
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