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AssigneeHonda Motor Co., Ltd.
InventorsMamoru Uraki, Ryutaro Yamazaki, Tatsuo Hayashi, Tomoya Kono, Takeru Abe
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An air-fuel ratio setting section sets a target air-fuel ratio KCMD according to the conditions of an engine. An air-fuel ratio correction coefficient calculating section calculates an air-fuel ratio correction coefficient KAF for controlling the air-fuel ratio wherein a detected air-fuel ratio KACT detected by a LAF sensor is converged to the target air-fuel ratio KCMD. A lower limit section constrains the air-fuel ratio correction coefficient KAF so as not to underrun the lower limit value. An upper limit section constrains the air-fuel ratio correction coefficient KAF so as not to exceed the upper limit value. A basic fuel injection time determining section calculates a basic fuel injection time TIM. A fuel injection time calculating section calculates a fuel injection time TOUT based on the target air-fuel ratio KCMD, the air-fuel ratio correction coefficient KAF, the basic fuel injection time TIM or the like, and various engine parameters.
An air-fuel ratio feedback control apparatus for engines which detects an air-fuel ratio of an air-fuel mixture supplied to a combustion chamber and controls a fuel supply amount so that the detected air-fuel ratio is converged to a target air-fuel ratio comprising:
An air-fuel ratio feedback control apparatus adapted to be used for engines comprising:
Dependencies are inferred from the claim text.