To perform an excellent air-fuel ratio control by highly accurately estimating an oil dilution fuel amount in a control device of an internal combustion engine.
The control device of the internal combustion engine is provided with an alcohol content estimation means for estimating an alcohol amount contained in a blow-by gas based on the operation state of the internal combustion engine, a gasoline content estimation means for estimating a gasoline amount contained in the blow-by gas based on the operation state of the internal combustion engine, and a mixed fuel content estimation means for estimating the mixed fuel amount contained in the blow-by gas based on the alcohol amount contained in the blow-by gas, the gasoline amount contained in the blow-by gas, and an alcohol concentration in the mixed fuel, and corrects the basic fuel injection amount according to the mixed fuel amount contained in the blow-by gas.
NAKAGAWA NORIHISA
MIZOGUCHI HIROAKI
IDE KOJI
KATO NAOTO
TATSUMI YASUYUKI
FUJITSU TEN LTD
| JPH01106971A | 1989-04-24 | |||
| JP2008128014A | 2008-06-05 | |||
| JP2004239227A | 2004-08-26 | |||
| JP2004316471A | 2004-11-11 |