Title:
EXHAUST GAS RECIRCULATION APPARATUS FOR INTERNAL COMBUSTION ENGINE AND EGR CALCULATION METHOD FOR EXHAUST GAS RECIRCULATION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2013/190933
Kind Code:
A1
Abstract:
When an internal combustion engine (1) reaches a steady operating state while implementing EGR with an EGR control valve (21) in an open state during a cold start, the EGR amount is calculated by calculating: a first intake amount, which is calculated on the basis of the value detected by an intake pressure sensor (27); and a second intake amount, which is calculated on the basis of the value detected by an air flow meter (6). Then, with the EGR control valve (21) in a closed state, EGR is stopped. Before and after stopping EGR, if there is no change in the operating condition of the internal combustion engine (1), the EGR correction amount is calculated from the difference between the first intake amount and the second intake amount, which were calculated when EGR was stopped. Then, by subtracting the EGR correction amount from the EGR amount, the actual EGR amount is calculated.
Inventors:
TOMINAGA KENSUKE (JP)
TSUYUKI TAKESHI (JP)
KOBARA TETSUYA (JP)
TSUYUKI TAKESHI (JP)
KOBARA TETSUYA (JP)
Application Number:
PCT/JP2013/063661
Publication Date:
December 27, 2013
Filing Date:
May 16, 2013
Export Citation:
Assignee:
NISSAN MOTOR (JP)
International Classes:
F02M25/07; F02B37/00
Domestic Patent References:
| WO2011027439A1 | 2011-03-10 |
Foreign References:
| JP2008038648A | 2008-02-21 | |||
| JP2008008181A | 2008-01-17 | |||
| JPS592792B2 | 1984-01-20 |
Attorney, Agent or Firm:
KOBAYASHI, Hiromichi et al. (JP)
Hiromichi Kobayashi (JP)
Hiromichi Kobayashi (JP)
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