Internal-combustion engines – Charge forming device – Including exhaust gas condition responsive means
Patent
1993-11-16
1994-11-15
Wolfe, Willis R.
Internal-combustion engines
Charge forming device
Including exhaust gas condition responsive means
123696, F02D 4114
Patent
active
053638310
ABSTRACT:
An air-fuel ratio feedback correction value is used to correct the quantity of fuel supplied to an engine. The correction value is subjected to proportional-integral control to be carried out according to an air-fuel ratio detected by an oxygen sensor according to the oxygen concentration in exhaust. A response delay time occurring in the air-fuel ratio feedback control system is calculated, and according to the response delay time, the air-fuel ratio feedback correction value is adjusted. Even with the response delay time in the feedback control system, an actual air-fuel ratio is substantially converged to a target air-fuel ratio.
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Tomisawa Naoki
Watanabe Satoru
Unisia Jecs Corporation
Wolfe Willis R.
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