Numerical analysis of diesel combustion with high EGR and high boost pressure using a multi-dimensional CFD code coupled with complex chemistry analysis

Keishi Takada, Jin Kusaka

研究成果: Conference article査読

抄録

In this study, fuel ignition timing parameters, in-cylinder pressure and heat release rates, and quantities of major exhaust gas emissions from a diesel engine were calculated using multi-dimensional CFD codes coupled with complex chemistry analysis. In addition, a sensitivity analysis of parameters was conducted to identify the major variables affecting these diesel combustion parameters. Firstly, diesel combustion analysis under typical operating conditions was carried out to validate the analytical methods used in the study, and then the effects of intake gas variables (e.g. temperature, and pressure) were investigated in detail in the sensitivity analysis. The results show that the main determinant of ignition timing in the engine is the spatial density of oxygen in the cylinder. This finding indicates that diesel combustion with high EGR and high boost pressure can provide both high thermal efficiency and low emissions.

本文言語English
ジャーナルSAE Technical Papers
DOI
出版ステータスPublished - 2008 1 1
イベント2008 SAE International Powertrains, Fuels and Lubricants Congress - Shanghai, China
継続期間: 2008 6 232008 6 25

ASJC Scopus subject areas

  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Pollution
  • Industrial and Manufacturing Engineering

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