Title:
INTERNAL COMBUSTION ENGINE AND NITROGEN ENRICHMENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/244728
Kind Code:
A1
Abstract:
An internal combustion engine (1) is provided with a nitrogen enrichment device (16) using a gas separation film (33) downstream of a turbo supercharger (11) in an intake passageway (15). By using nitrogen enriched air obtained by partly removing oxygen for combustion, the apparent air-fuel ratio is increased even during combustion at a stoichiometric ratio. Exhaust gas that has passed through a catalyst converter (22) is introduced as a sweep gas into the nitrogen enrichment device (16) via an exhaust-diverting passageway (25). The exhaust gas, with a reduced oxygen concentration, effectively assists removal of oxygen through the gas separation film (33), whereby nitrogen enriched air with a high nitrogen enrichment level is generated easily.
Inventors:
KASSAI MASAHARU (JP)
KAWASHITA YOSHIO (JP)
NODA TORU (JP)
OTA YUDAI (JP)
KAWASHITA YOSHIO (JP)
NODA TORU (JP)
OTA YUDAI (JP)
Application Number:
PCT/JP2019/023183
Publication Date:
December 26, 2019
Filing Date:
June 12, 2019
Export Citation:
Assignee:
NISSAN MOTOR (JP)
SUMITOMO CHEMICAL CO (JP)
SUMITOMO CHEMICAL CO (JP)
International Classes:
F02M27/00; B01D53/22; F02B51/00
Domestic Patent References:
| WO2016024523A1 | 2016-02-18 | |||
| WO2014050986A1 | 2014-04-03 |
Foreign References:
| JP2003201924A | 2003-07-18 | |||
| JPH02191859A | 1990-07-27 | |||
| JP2007222841A | 2007-09-06 | |||
| US6543428B1 | 2003-04-08 |
Attorney, Agent or Firm:
KOBAYASHI, Hiromichi et al. (JP)
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