Internal-combustion engines – Charge forming device – Including exhaust gas condition responsive means
Patent
1993-06-23
1995-11-14
Moulis, Thomas N.
Internal-combustion engines
Charge forming device
Including exhaust gas condition responsive means
123698, 123520, F02M 4114
Patent
active
054657032
ABSTRACT:
A method for controlling canister purge of an internal combustion engine is disclosed. Based on a change rate of an air-fuel ratio correction coefficient per unit duty, a canister loading ratio is assumed by looking up a map. Further based on the canister loading ratio, a correction amount to the purge control duty for controlling the purge amount from the canister is determine. It is therefore possible to control a canister purge in accordance with the canister loading amount, whereby an over-loading of the canister can be prevented even under a high evaporation condition such as at extremely high temperatures or high altitudes. A deviation of the air-fuel ratio caused by the canister purge can be calculated, whereby an improvement in startability, driveability and emissions can be achieved by updating air-fuel ratio learning values with new learning values excluding a deviation of the air-fuel ratio caused by the canister purge.
REFERENCES:
patent: 4748959 (1988-06-01), Cook
patent: 4831992 (1989-05-01), Jundt et al.
patent: 4869223 (1989-09-01), Shimomura et al.
patent: 4977881 (1990-12-01), Abe et al.
patent: 5048492 (1991-09-01), Davenport et al.
patent: 5070847 (1991-12-01), Akiyama et al.
patent: 5072712 (1991-12-01), Steinbrenner et al.
patent: 5085194 (1992-02-01), Kuroda et al.
patent: 5090388 (1992-02-01), Hamburg et al.
patent: 5150686 (1992-09-01), Okawa et al.
patent: 5216995 (1993-06-01), Hosoda et al.
patent: 5230319 (1993-07-01), Otsuka et al.
patent: 5245978 (1993-09-01), Orzel
patent: 5257613 (1993-11-01), Monda et al.
patent: 5299546 (1994-04-01), Kato et al.
Fuji Jukogyo Kabushiki Kaisha
Moulis Thomas N.
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