Engine control system for a lean burn engine having fuel vapor r

Details Engine control system for a lean burn engine having fuel vapor r Engine control system for a lean burn engine having fuel vapor r

1997-04-03

1998-06-16

Moulis, Thomas N.

Internal-combustion engines

Charge forming device

Including exhaust gas condition responsive means

123698, 123520, F02M 3304, F02D 4114

Patent

active

057655413

ABSTRACT:
Fuel vapors are purged from a fuel system into an engine air/fuel intake and the mass flow of such vapors are adaptively learned during a fuel vapor learning mode. When operating in a lean air/fuel operating mode, the lean mode is periodically disabled and the fuel vapor learning mode periodically enabled to update the measurement of inducted fuel vapors. Fuel delivery to the engine is corrected by such measurement to compensate for inducted fuel vapors and maintain engine operation at the desired air/fuel ratio.

REFERENCES:
patent: 5048493 (1991-09-01), Orzel et al.
patent: 5613481 (1997-03-01), Kitagawa
patent: 5623914 (1997-04-01), Kawamoto et al.
patent: 5655507 (1997-08-01), Kawasaki
patent: 5676118 (1997-10-01), Saito
patent: 5682866 (1997-11-01), Shimizu et al.
patent: 5699778 (1997-12-01), Muraguchi

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