Method and apparatus for controlling air-fuel ratio in internal

Internal-combustion engines – Charge forming device – Fuel injection system

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123440, F02B 3300

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active

046274049

ABSTRACT:
In an internal combustion engine, a base fuel amount is calculated, and an air-fuel ratio deviation for each region is determined by a predetermined engine operating parameter when the engine is in a transient state such as an acceleration state or a deceleration state. A transient fuel correction amount is calculated in accordance with the calculated air-fuel ratio deviation for each region determined by the predetermined engine operating parameter. A fuel amount to be supplied to the engine is calculated by correcting said base fuel amount in accordance with the transient fuel correction amount.

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