Numerical Analysis of Combustion in a Compressed Natural Gas Direct Injection Engine

• NOMURA Yoshihiro

  (株)豊田中央研究所

• INAGAKI Hideto

  (株)豊田中央研究所

• TSUKASAKI Yukihiro

  トヨタ自動車(株)

Bibliographic Information

Other Title

• 圧縮天然ガス(CNG)直接噴射エンジンの燃焼解析
• アッシュク テンネン ガス CNG チョクセツ フンシャ エンジン ノ ネンショウ カイセキ

Abstract

Compressed Natural Gas (CNG) direct injection engine has many advantages for the reduction of CO₂ emission. For further improvement of those engines, a numerical simulation technique has been developed for the analysis of combustion process. Prior to an in-cylinder calculation, the wall function was modified to improve the accuracy of the wall heat loss. Then the nozzle-to-cylinder entire calculation was performed. Good agreements were obtained in comparison with the experiment for the behavior of impinging jets. This method was applied to the analysis of the difference of combustion processes between CNG and conventional gasoline direct-injection engines. It is accordingly found that the velocity and the turbulence of in-cylinder gas are increased by the fuel injection into CNG engine and thus the combustion speed is enhanced significantly.

Journal

• Thermal Science and Engineering

  Thermal Science and Engineering 15 (1), 33-37, 2007

  The Heat Transfer Society of Japan

Keywords

• CFD
• Combustion
• Compressed natural gas (CNG)
• Heat release
• Heat loss
• Wall function

Details

• CRID: 1390001204414028928
• NII Article ID: 10018576202
• NII Book ID: AA11358679
• DOI: 10.11368/tse.15.33
• ISSN: 18822592
• ISSN: 09189963
• NDL BIB ID: 8658403
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8658403
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • CiNii Articles
• Abstract License Flag: Disallowed