Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Koji Honda0
Seiji Hirowatari0
Masanao Idogawa0
Date of Patent
December 4, 2007
Patent Application Number
11303963
Date Filed
December 19, 2005
Patent Primary Examiner
Patent abstract
An air-fuel ratio control apparatus for an internal combustion engine according to the invention includes a control unit that makes a correction to the fuel injection amount using the air-fuel ratio learned value when calculating the fuel injection amount, and that changes the guard value that places a limitation on the degree of correction to the fuel injection amount made by using the air-fuel ratio learned value, based on the degree to which lubricating oil has been diluted with fuel.
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