Numerical optimization of the fuel mixing process in a direct-injection gasoline engine

Ken Naitoh, Yasuo Takagi, Kunio Kuwahara

Research output: Contribution to journalConference article

6 Citations (Scopus)

Abstract

The spray formation and mixing processes in a direct-injection gasoline engine are examined by using a sophisticated air flow calculation model and an original spray model. The spray model for a spiral injector can evaluate the droplet size and spatial distribution under a wide range of parameters such as the initial cone angle, back pressure and injection pressure. This model also includes the droplet breakup process due to wall impingement. The arbitrary constants used in the spray model are derived theoretically without using any experimental data. Fuel vapor distributions just before ignition and combustion processes are analyzed for both homogeneous and stratified charge conditions.

Original languageEnglish
JournalSAE Technical Papers
DOIs
Publication statusPublished - 1998 Jan 1
Externally publishedYes
EventInternational Spring Fuels and Lubricants Meeting and Exposition - Dearborn, MI, United States
Duration: 1998 May 41998 May 6

ASJC Scopus subject areas

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

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