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

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

doi:10.1299/jsmeb.41.975

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

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

Thermo Fluid Dynamics Division

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

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 NO_x 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 language	English
Pages (from-to)	975-982
Number of pages	8
Journal	JSME International Journal, Series B: Fluids and Thermal Engineering
Volume	41
Issue number	4
DOIs	https://doi.org/10.1299/jsmeb.41.975
Publication status	Published - 1998

All Science Journal Classification (ASJC) codes

Mechanical Engineering
Physical and Theoretical Chemistry
Fluid Flow and Transfer Processes

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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.",

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AU - Osafune, Shin Nosuke

AU - Ide, Hiroshi

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