Internal-combustion engines – Charge forming device – Including exhaust gas condition responsive means
Patent
1998-07-02
2000-12-19
Kwon, John
Internal-combustion engines
Charge forming device
Including exhaust gas condition responsive means
701109, F02D 4100
Patent
active
061615307
ABSTRACT:
An air-fuel ratio control system for an automotive internal combustion engine equipped with a fuel injector valve. The control system comprises a sensor for detecting a ratio between air and fuel which form air-fuel mixture in the engine. A controller is provided to control the ratio between air and fuel, and includes a section for calculating the ratio between air and fuel, in accordance with an engine operating condition. A section is provided for calculating a quantity of fuel to be supplied through the fuel injector valve, in accordance with the calculated ratio between air and fuel. A section is provided for calculating a coefficient relating to a feedback control for the ratio between air and fuel, in accordance with the calculated quantity of fuel to be supplied. The feedback control is made in accordance with the ratio between air and fuel detected by the sensor. Additionally, a section is provided for accomplishing a feedback in calculation of the ratio between air and fuel, by using the calculated coefficient.
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Kakizaki Shigeaki
Matsumoto Mikio
Ooba Hiraku
Kwon John
Nissan Motor Co,. Ltd.
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