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Title:
EXHAUST SYSTEM STATE DETECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/016305
Kind Code:
A1
Abstract:
In order to provide an exhaust system state detection device with which the exhaust temperature can be detected effectively using a simple configuration, an exhaust system state detection device according to the present invention is equipped with: an intake air oxygen concentration sensor (32) that detects the intake air oxygen concentration in an engine (10); an engine rotation sensor (30) and an acceleration position sensor (31) that detect the operating state; an indicated thermal efficiency calculation unit (42) that calculates the amount of change in the indicated thermal efficiency of the engine (10) on the basis of the intake air concentration, the fuel injection start timing, and a previously stored first model equation defining the relationship between the intake air concentration, the injection start timing, and the amount of change in the indicated thermal efficiency; and an exhaust temperature calculation unit (43) that calculates the exhaust temperature of the engine (10) on the basis of the amount of change in the indicated thermal efficiency and a previously stored second model equation defining the relationship between the exhaust temperature and the amount of change in the indicated thermal efficiency.

Inventors:
HANAWA Satoshi (Fujisawa Factory 8, Tsuchidana, Fujisawa-sh, Kanagawa 81, 〒2520881, JP)
IKAI Yoshiaki (15-16 Shin-Yokohama 2-chome, Kouhoku-ku, Yokohama-sh, Kanagawa 33, 〒2220033, JP)
Application Number:
JP2014/070198
Publication Date:
February 05, 2015
Filing Date:
July 31, 2014
Export Citation:
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Assignee:
ISUZU MOTORS LIMITED (26-1, Minami-Ohi 6-chome Shinagawa-k, Tokyo 22, 〒1408722, JP)
TRANSTRON INC. (15-16, Shin-Yokohama 2-chome Kouhoku-ku, Yokohama-sh, Kanagawa 33, 〒2220033, JP)
International Classes:
F02D45/00; F02D21/08; F02M25/07
Foreign References:
JPH03503196A1991-07-18
JP2003065169A2003-03-05
JP2013087673A2013-05-13
JP2003286820A2003-10-10
JPH11241820A1999-09-07
JP2006266182A2006-10-05
JP2011007131A2011-01-13
JP2009114871A2009-05-28
Attorney, Agent or Firm:
KINUTANI Nobuo (Chemical Building, 15-12 Nishi-Shimbashi 3-chome, Minato-k, Tokyo 03, 〒1050003, JP)
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