CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

Title:

CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

Document Type and Number:

WIPO Patent Application WO/2012/066645

Kind Code:

A1

Abstract:

When alcohol-blended fuel is supplied to an internal combustion engine, an intake air flow rate (Ga) is detected (step 1005), and the basic amplitude quantity (α) of an upstream-side target air-fuel ratio (abyfr) corresponding to the detected intake air flow rate (Ga) is calculated (step 1010). Subsequently, an alcohol concentration (more specifically, ethanol concentration (Cetha)) in the fuel and a cooling water temperature (THW) (or intake air temperature (THA)) are detected (step 1015), a hydrogen concentration (Ch) in mixed exhaust gas is calculated on the basis of the detected ethanol concentration (Cetha) and cooling water temperature (THW) (or intake air temperature (THA)) (step 1020), an amplitude gain (β) corresponding to the calculated hydrogen concentration (Ch) is calculated (step 1025), and finally the amplitude quantity (α×β) of the upstream-side target air-fuel ratio (abyfr) is calculated (step 1030).

Inventors:

MORITA KOJI (JP)

Application Number:

PCT/JP2010/070437

Publication Date:

May 24, 2012

Filing Date:

November 17, 2010

Export Citation:

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Assignee:

TOYOTA MOTOR CO LTD (JP)
MORITA KOJI (JP)

International Classes:

F02D19/08

Foreign References:

JP2007231864A	2007-09-13
JP2001182595A	2001-07-06
JPH11247687A	1999-09-14
JP2002147270A	2002-05-22
JPH05209549A	1993-08-20
JPH1172472A	1999-03-16
JP2000065782A	2000-03-03
JP2004069547A	2004-03-04
JPH0627073A	1994-02-04

Other References: