METHOD FOR SPECIFYING EGR RATE IN INTERNAL COMBUSTION ENGINE, AND CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

WIPO Patent Application WO/2011/141994

A1

In order to make it possible to accurately specify the EGR rate from the output value of an in-cylinder pressure sensor, disclosed is a method for specifying the EGR rate in an internal combustion engine, wherein first the output value of an in-cylinder pressure sensor during an intake stroke is acquired, and comparison data related to the in-cylinder pressure during the intake stroke is calculated from the acquired sensor output value. The output value of the in-cylinder pressure sensor during an exhaust stroke in the same cycle is also acquired, and comparison data related to the in-cylinder pressure during the exhaust stroke is calculated from the acquired sensor output value. The two comparison data are compared and the EGR rate of an air-fuel mixture used for combustion is specified from the difference between the values thereof.

JPS5614844	ELECTRONICALLY CONTROLLED CARBURETOR
JP2015524888	Methods and systems for diagnosing the intake air taken into the internal combustion engine of an automobile

SANO TAKESHI (JP)
IKEDA SHINJI (JP)
SUZUKI YUSUKE (JP)
TANAKA SOICHIRO (JP)

PCT/JP2010/057949

November 17, 2011

May 11, 2010

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TOYOTA MOTOR CO LTD (JP)
SANO TAKESHI (JP)
IKEDA SHINJI (JP)
SUZUKI YUSUKE (JP)
TANAKA SOICHIRO (JP)

F02M25/07; F02D21/08

JPS56159556A	1981-12-08
JPH11257149A	1999-09-21
JPH07189815A	1995-07-28
JPS63134845A	1988-06-07

TAKAHASHI, Hideki et al. (JP)
Hideki Takahashi (JP)

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