Internal combustion engine air/fuel ratio regulation

Details Internal combustion engine air/fuel ratio regulation Internal combustion engine air/fuel ratio regulation

1993-10-07

1995-02-28

Lazarus, Ira S.

Power plants

Internal combustion engine with treatment or handling of...

Methods

60276, 60285, 123703, F01N 320

Patent

active

053925980

ABSTRACT:
Internal combustion engine air/fuel ratio regulation in which closed-loop air/fuel ratio control responsive to a pre-converter oxygen sensor feedback signal is further regulated in accord with a feedback signal from a post-converter oxygen sensor signal operative under certain engine operating conditions to provide an average actual engine air/fuel ratio signal. A pre-converter oxygen sensor rich/lean threshold is adjusted in accord with the post-converter signal to drive or maintain such post-converter signal within a preferred range corresponding to an average engine air/fuel ratio of stoichiometry.

REFERENCES:
patent: 4278060 (1981-07-01), Isobe et al.
patent: 4625698 (1986-12-01), Jamrog
patent: 4817383 (1989-04-01), Masul
patent: 4817384 (1989-04-01), Okumura et al.
patent: 5025767 (1991-06-01), Kume et al.
patent: 5282360 (1994-02-01), Hamburg et al.
patent: 5291673 (1994-03-01), Hamburg et al.
patent: 5293740 (1994-03-01), Heppner et al.
Closed Loop Carburetor Emission Control System-R. A. Spilski and W. D. Creps pp. 145-154.

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