Improvement of diesel combustion using a fuel-water-fuel injection system

Koji Takasaki, Tadashi Fukuyoshi, Masaru Otsubo, Shigenobu Abe, Shin Nosuke Osafune, Hiroshi Ide

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Abstract

This paper describes the application of a stratified fuel/water injection system for diesel engines. This system makes it possible to inject water during fuel injection from the same nozzle hole without mixing the liquids. First, it was confirmed that NOx reduction and improvement of thermal efficiency and smoke density could be achieved using this system. The reason for such improvement of combustion with water was investigated in detail using a special test engine with which burning flames could be visualized by taking high speed photographs. Moreover, the distribution of the water vapor in the fuel spray was estimated through calculations using the software KIVA. Based on these studies, this system may soon be put into practical use.

Original languageEnglish
Pages (from-to)975-982
Number of pages8
JournalJSME International Journal, Series B: Fluids and Thermal Engineering
Volume41
Issue number4
DOIs
Publication statusPublished - Jan 1 1998

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All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Physical and Theoretical Chemistry
  • Fluid Flow and Transfer Processes

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