Air-fuel ratio feedback control apparatus and method for internal combustion engine
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United States of America Patent
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Oct 16, 2007
Grant Date -
Jun 8, 2006
app pub date -
Dec 5, 2005
filing date -
Dec 6, 2004
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Abstract
A feedback control of an air-fuel ratio of an internal combustion engine is performed in such a manner that when fuel injection is resumed from a condition where fuel injection is stopped due to deceleration running, air-fuel ratio feedback control is resumed once the output from an air-fuel ratio sensor indicates an air-fuel ratio less than or equal to a threshold value SL.
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