Method of compensating output from oxygen concentration sensor o

Details Method of compensating output from oxygen concentration sensor o Method of compensating output from oxygen concentration sensor o

1987-03-02

1988-08-16

Cox, Ronald B.

Internal-combustion engines

Charge forming device

Having fluidic logic control means

123491, 123488, F02B 300

Patent

active

047636289

ABSTRACT:
Compensation of an output from an oxygen concentration sensor of an air/fuel ratio control apparatus for an internal combustion engine is executed during engine warm-up, to correct for an erroneous component in the oxygen concentration sensor output data caused by incomplete combustion during warm-up. The degree of compensation applied is determined by the engine operating temperature, as represented by the cooling water temperature. Excessive richness of the air/fuel ratio of the mixture supplied to the engine during warm-up is thereby eliminated.

REFERENCES:
patent: 4357922 (1982-11-01), Rosenzopf
patent: 4566419 (1986-01-01), Ninomiya
patent: 4580539 (1986-04-01), Kitahara

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