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Title:
CATALYST TEMPERATURE ESTIMATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/129386
Kind Code:
A1
Abstract:
[Problem] To improve the precision with which the catalyst temperature is estimated when the fuel is cut, by correcting the estimated temperature when the fuel cut starts in one cylinder. [Solution] A catalyst temperature estimation device equipped with a temperature estimation means that estimates the temperature of a catalyst provided in the exhaust passage of a multi-cylinder engine, said catalyst temperature estimation device characterized by being equipped with a fuel cut determination means that determines that a fuel cut has begun in at least one of the cylinders of the multi-cylinder engine, and when the fuel cut determination means determines that a fuel cut has begun, the temperature estimation means corrects the estimated temperature.

Inventors:
TANOZAWA ISSEI (JP)
Application Number:
PCT/JP2015/052733
Publication Date:
September 03, 2015
Filing Date:
January 30, 2015
Export Citation:
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Assignee:
SUZUKI MOTOR CORP (JP)
TANOZAWA ISSEI (JP)
International Classes:
F02D45/00; F02D17/02; F02D41/12
Foreign References:
JPH10103134A1998-04-21
JP2008106696A2008-05-08
JP2001173504A2001-06-26
JP2010185383A2010-08-26
Attorney, Agent or Firm:
SAIGOH Yoshimi (JP)
Yoshimi Saigo (JP)
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