Effect of nozzle diameter and EGR ratio on the flame temperature and soot formation for various fuels

Danilo Nikolic, Kazunari Wakimoto, Shinya Takahashi, Norimasa Iida

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Citations (Scopus)

Abstract

In this study, effects of nozzle hole diameter and EGR ratio on flame temperature (indication of NO formation) and KL value (indication of soot formation) were investigated. Combustion of a single diesel fuel spray in the cylinder of a rapid compression machine (RCM) was analyzed. Three nozzles with different hole diameter were used corresponding to present, near term and long term heavy duty diesel engine specifications. EGR was simulated through 2%vol. CO2 addition to the inlet air and by increase of in-cylinder surrounding gas temperature. Various types of fuels were used in this. The ignition and combustion processes of diesel fuel spray were observed by a high-speed direct photography and by indicated pressure diagrams. Flame temperature and KL factor were analyzed by a two-color method. With larger nozzle hole diameters there are larger high temperature areas. With smaller nozzle hole diameters there is more soot formed. Introduction of 2% vol. CO 2 to the inlet air does not influence NO, neither soot formations. With higher in-cylinder surrounding gas temperatures there are higher flame temperatures throughout combustion process.

Original languageEnglish
Title of host publicationSAE Technical Papers
DOIs
Publication statusPublished - 2001
EventInternational Spring Fuels and Lubricants Meeting and Exhibition - Orlando, FL, United States
Duration: 2001 May 72001 May 9

Other

OtherInternational Spring Fuels and Lubricants Meeting and Exhibition
CountryUnited States
CityOrlando, FL
Period01/5/701/5/9

ASJC Scopus subject areas

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

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