Title:
EGR ESTIMATION METHOD FOR INTERNAL COMBUSTION ENGINE AND EGR ESTIMATION DEVICE FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2021/199412
Kind Code:
A1
Abstract:
This EGR estimation method for an internal combustion engine 1 is for estimating an EGR rate in intake and exhaust systems 10, 20 of the internal combustion engine 1 provided with: the intake system 10 which includes an air cleaner 12 and an intake passage 11; the exhaust system 20 which includes an exhaust passage 21; and a supercharger 30. The internal combustion engine 1 is also provided with an EGR device 40 including an EGR passage 41 and an EGR valve 43. The intake system 10 is provided with an intake bypass passage 18 and a R/V 19. The EGR estimation method for the internal combustion engine 1 includes estimating the EGR rate on the basis of the reverse flowrate of an EGR gas flowing back to the air cleaner 12 side as a result of opening of the R/V 19, in the case where the R/V 19 is opened and the EGR valve 43 is fully closed during supercharging.
Inventors:
ANDO TAICHI (JP)
SUZUKI KENJI (JP)
SUZUKI KENJI (JP)
Application Number:
PCT/JP2020/015232
Publication Date:
October 07, 2021
Filing Date:
April 02, 2020
Export Citation:
Assignee:
NISSAN MOTOR (JP)
International Classes:
F02M26/47; F02B37/00; F02B37/16; F02M26/06
Domestic Patent References:
| WO2011111171A1 | 2011-09-15 | |||
| WO2012176490A1 | 2012-12-27 |
Foreign References:
| JP2016217249A | 2016-12-22 | |||
| JP2013113104A | 2013-06-10 | |||
| US20170356397A1 | 2017-12-14 | |||
| JP2013007268A | 2013-01-10 |
Attorney, Agent or Firm:
GOTOH & PARTNERS (JP)
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