Title:
RECIPROCATING INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2022/168471
Kind Code:
A1
Abstract:
A reciprocating internal combustion engine (10) comprises: a fuel injection nozzle (18) that is arranged at the center of the top of a cylinder (12) and radially injects fuel into a combustion chamber (16); and a water supply device (22) comprising a water injection nozzle (20) for injecting water into the combustion chamber (16). The water supply device (22) injects the water from the water injection nozzle (20), and before the fuel injection nozzle (18) performs a main injection, a flat column-shaped water-containing region (26) including water droplets and water vapor is formed by stratification at a center section of the combustion chamber (16). The jet flow of fuel, when passing through the water-containing region (26), takes up surrounding gas and water that has been cooled by evaporation heat, thereby lowering the combustion temperature. The distribution of water supplied to inside the combustion chamber makes it possible to curb the occurrence of nitrogen oxide and improve the thermal efficiency.
Inventors:
INAGAKI KAZUHISA (JP)
MIYAGAWA HIROSHI (JP)
FUYUTO TAKAYUKI (JP)
KAWAE TSUTOMU (JP)
MIYAGAWA HIROSHI (JP)
FUYUTO TAKAYUKI (JP)
KAWAE TSUTOMU (JP)
Application Number:
PCT/JP2021/047186
Publication Date:
August 11, 2022
Filing Date:
December 21, 2021
Export Citation:
Assignee:
TOYOTA JIDOSHOKKI KK (JP)
International Classes:
F02B23/06; F02D19/12; F02M25/025; F02M61/14; F02M61/18
Foreign References:
| JP2014077391A | 2014-05-01 | |||
| JP2006522262A | 2006-09-28 | |||
| JP2018173000A | 2018-11-08 | |||
| JP2013024094A | 2013-02-04 | |||
| JPH06229320A | 1994-08-16 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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