Title:
CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JP2011153550
Kind Code:
A
Abstract:
To compute an EGR rate using measuring data by a cylinder pressure sensor.
The measuring data by the cylinder pressure sensor are acquired at least two points in a period from a time point of combustion termination in a cylinder, to which the cylinder pressure sensor is attached, until an exhaust valve of the cylinder is opened. The specific heat ratio κexp of combustion gas in the cylinder is calculated using the obtained measuring data. As there is a certain relationship between the specific heat ratio of combustion gas and the EGR rate, when the relationship is mapped beforehand, the EGR rate can be calculated from the specific heat ratio κexp of combustion gas.
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Inventors:
YASUDA HIROMICHI
SUZUKI YUSUKE
TANAKA SOICHIRO
SUZUKI YUSUKE
TANAKA SOICHIRO
Application Number:
JP2010014671A
Publication Date:
August 11, 2011
Filing Date:
January 26, 2010
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
F02D45/00
Domestic Patent References:
| JP2010007581A | 2010-01-14 | |||
| JP2010007618A | 2010-01-14 | |||
| JP2008051005A | 2008-03-06 | |||
| JP2005351145A | 2005-12-22 | |||
| JP2008231995A | 2008-10-02 | |||
| JP2008274811A | 2008-11-13 | |||
| JP2002038911A | 2002-02-06 | |||
| JPH01249932A | 1989-10-05 | |||
| JP2003148183A | 2003-05-21 |
Attorney, Agent or Firm:
Hideki Takahashi
Mamoru Takada
Hidekazu Onishi
Mamoru Takada
Hidekazu Onishi