Control system for internal combustion engine

Details Control system for internal combustion engine Control system for internal combustion engine

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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