Title:
EGR CONTROL DEVICE AND EGR CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2015/177888
Kind Code:
A1
Abstract:
An EGR control device is provided with: an estimated EGR ratio calculation unit that calculates an estimated EGR ratio from a new airflow rate at a junction portion of an intake air channel with an EGR channel and an amount of EGR gas that passes through an EGR valve; and a junction-portion EGR ratio estimation unit that, when the EGR valve is shifted from a closed state to an opened state, corrects the estimated EGR ratio on the basis of a gas state in an introduction channel, thereby calculating a junction-portion EGR ratio, which is a ratio of the amount of EGR gas to the amount of new air at the junction portion.
Inventors:
TAKAKI DAISUKE (JP)
TSUCHIDA HIROFUMI (JP)
SUGAWARA KAZUHIKO (JP)
SUZUKI KENJI (JP)
SUI TAKAYUKI (JP)
TSUCHIDA HIROFUMI (JP)
SUGAWARA KAZUHIKO (JP)
SUZUKI KENJI (JP)
SUI TAKAYUKI (JP)
Application Number:
PCT/JP2014/063492
Publication Date:
November 26, 2015
Filing Date:
May 21, 2014
Export Citation:
Assignee:
NISSAN MOTOR (JP)
International Classes:
F02M25/07; F02D21/08; F02D45/00
Foreign References:
| JP2001254659A | 2001-09-21 | |||
| JP2010127134A | 2010-06-10 | |||
| JP2001263119A | 2001-09-26 |
Other References:
See also references of EP 3153695A4
Attorney, Agent or Firm:
GOTO, Masaki et al. (JP)
Masaki Goto (JP)
Masaki Goto (JP)
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