Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1981-08-24
1983-07-12
Lall, Parshotam S.
Internal-combustion engines
Charge forming device
Fuel injection system
123480, 123438, 123440, F02B 300
Patent
active
043924719
ABSTRACT:
The amount of fuel supplied to the engine is corrected in accordance with an air-fuel ratio correction coefficient. When the engine is in a predetermined first operating condition, the correction coefficient is calculated depending upon the detected concentration of a predetermined component in the exhaust gas, and thus the above correction is performed by closed-loop control. When the engine is not in the first operating condition, the correction coefficient is fixed, and thus the above correction is performed by open-loop control. An average value of the calculated correction coefficient is calculated only when the engine is in a predetermined second operating condition. An initial value of the air-fuel ratio correction coefficient when closed-loop control is resumed is determined to be the calculated average value.
REFERENCES:
patent: 4178884 (1979-12-01), Norimatsu et al.
patent: 4248196 (1980-03-01), Toelle
patent: 4252098 (1981-02-01), Tomczak et al.
patent: 4284050 (1981-08-01), Schowerskyj et al.
patent: 4321903 (1982-03-01), Kondo et al.
Miyagi Hideo
Nakano Jiro
Lall Parshotam S.
Toyota Jidosha Kogyo Kabushiki Kaisha
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