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Title:
CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2018/135265
Kind Code:
A1
Abstract:
Provided is a novel control device for an internal combustion engine, the control device being capable of accurately estimating an EGR amount (rate) during a transient state. For this purpose, detection signals of EGR sensors (9, 25) provided downstream of a throttle valve (7) that adjusts the flow rate of a mixed gas of air flowing through an intake pipe (10) and the EGR gas are input to determine a first EGR rate, detection signals of at least an air flow rate sensor (3) and an EGR valve opening degree sensor are input to perform predetermined calculation thereby estimating a second EGR rate, the second EGR rate is subjected to delay processing correspondingly to the response delay of the EGR sensor in order to determine a third EGR rate, and moreover the second EGR rate is learned and corrected by reflecting the difference between the third EGR rate and the first EGR rate.

Inventors:
ARAKAWA Takafumi (6-6, Marunouchi 1-chome, Chiyoda-k, Tokyo 80, 〒1008280, JP)
IIHOSHI Yoichi (6-6, Marunouchi 1-chome, Chiyoda-k, Tokyo 80, 〒1008280, JP)
SUZUKI Kunihiko (6-6, Marunouchi 1-chome, Chiyoda-k, Tokyo 80, 〒1008280, JP)
HORI Toshio (2520, Takaba, Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
Application Number:
JP2017/046876
Publication Date:
July 26, 2018
Filing Date:
December 27, 2017
Export Citation:
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Assignee:
HITACHI AUTOMOTIVE SYSTEMS, LTD. (2520, Takaba Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
International Classes:
F02M26/46; F02D21/08; F02D43/00; F02M26/06; F02P5/155
Domestic Patent References:
WO2006095908A12006-09-14
Foreign References:
JP2016113906A2016-06-23
JP2014169684A2014-09-18
JP2004360535A2004-12-24
Attorney, Agent or Firm:
TODA Yuji (6-1, Marunouchi 1-chome, Chiyoda-k, Tokyo 20, 〒1008220, JP)
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