Controller for multi-cylinder engine

Details Controller for multi-cylinder engine Controller for multi-cylinder engine

1996-08-07

1997-11-18

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

Including exhaust gas condition responsive means

123674, F02D 4114

Patent

active

056876998

ABSTRACT:
In a multi-cylinder engine, amounts of fuel injection supplied to respective cylinders are individually corrected on the basis of a signal from A/F sensors in the number less than the number of cylinders of the engine, for example, one A/F sensor, so that the air/fuel ratios for respective cylinders are feedback-controlled at a substantially uniform predetermined air/fuel ratio. Therefore, it is possible to perform precise air/fuel ratio control so as to accurately maintain the air/fuel ratio of the engine at the stoichiometric air/fuel ratio, to reduce the concentrations of HC, CO, and NOx in exhaust gas.

REFERENCES:
patent: 4934328 (1990-06-01), Ishii et al.
patent: 5462037 (1995-10-01), Hasegawa et al.

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