CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE

Title:

CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE

Document Type and Number:

WIPO Patent Application WO/2014/080523

Kind Code:

A1

Abstract:

The object of the present invention is to increase the precision in controlling the EGR rate or EGR amount by manipulating an EGR valve in an internal combustion engine in which an exhaust passage and an intake passage are connected via the EGR valve. Therefore, this control device calculates a primary lag time constant on the basis of the difference in pressure upstream and pressure downstream of the EGR valve, the primary lag time constant being an indicator of response lag in the movement of EGR gas relative to the action of the EGR valve. This control device calculates a control target value from the primary lag time constant calculated from the difference in pressure upstream and pressure downstream of the EGR valve, and from the target value of the EGR rate or EGR amount, and actuates the EGR valve according to the control target value.

Inventors:

IBUKI TAKU (JP)

Application Number:

PCT/JP2012/080491

Publication Date:

May 30, 2014

Filing Date:

November 26, 2012

Export Citation:

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Assignee:

TOYOTA MOTOR CO LTD (JP)
IBUKI TAKU (JP)

International Classes:

F02M25/07; F02D21/08

Domestic Patent References:

WO2010035554A1

2010-04-01

Foreign References:

JPH0874675A	1996-03-19
JPH09287510A	1997-11-04
JP2002004904A	2002-01-09
JP2010261420A	2010-11-18
JP2004150343A	2004-05-27
JP2005054657A	2005-03-03

Other References: