Air fuel ratio control system for internal combustion engines

Details Air fuel ratio control system for internal combustion engines Air fuel ratio control system for internal combustion engines

1992-01-27

1993-04-06

Nelli, Raymond A.

Internal-combustion engines

Charge forming device

Including exhaust gas condition responsive means

123691, 123692, 123673, F02M 5100

Patent

active

051994089

ABSTRACT:
An air fuel ratio control system for an internal combustion engine, comprising: an internal combustion engine having a plurality of cylinders, and exhaust passages corresponding to the respective cylinders; a plurality of oxygen sensors arranged in the respective exhaust passages to detect the composition of exhaust gas from the respective cylinders; and a control unit for independently controlling an air fuel ratio of the respective cylinders based on outputs from the oxygen sensors.

REFERENCES:
patent: 3831564 (1974-08-01), Schmidt et al.
patent: 3916848 (1975-11-01), Schmidt
patent: 4418672 (1983-12-01), Muller et al.
patent: 4483300 (1984-11-01), Hosaka et al.
patent: 4817573 (1989-04-01), Yamada et al.
patent: 4988428 (1991-01-01), Iwakiri et al.
patent: 5012421 (1991-04-01), Ishii

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