Dynamics and combustion of diesel sprays injected under supercharging conditions (Visualization using a rapid compression and expansion machine and a copper vapor laser)

Yasuhiro Daisho, Kouji Morita, Takeshi Saito

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

An experimental study has been carried out to investigate the effects of supercharging on diesel spray dynamics and combustion characteristics. A rapid compression and expansion machine has been developed to reproduce diesel sprays and combustion. A copper vapor laser is used as a light source to visualize the spray. By synchronizing the laser output to a high speed 16 mm camera, instantaneous photographs of the spray can be taken. It is shown that supercharging can increase air entrainment in the spray and its evaporation. As a result, ignition lag can be reduced while the early part of diffusion combustion is increased.

Original languageEnglish
Pages (from-to)3420-3425
Number of pages6
JournalNippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume61
Issue number590
Publication statusPublished - 1995 Oct
Externally publishedYes

Fingerprint

superchargers
sprayers
Visualization
Vapors
vapors
Copper
copper
expansion
Lasers
lasers
Air entrainment
Ignition
Light sources
Evaporation
Cameras
entrainment
laser outputs
photographs
ignition
light sources

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

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abstract = "An experimental study has been carried out to investigate the effects of supercharging on diesel spray dynamics and combustion characteristics. A rapid compression and expansion machine has been developed to reproduce diesel sprays and combustion. A copper vapor laser is used as a light source to visualize the spray. By synchronizing the laser output to a high speed 16 mm camera, instantaneous photographs of the spray can be taken. It is shown that supercharging can increase air entrainment in the spray and its evaporation. As a result, ignition lag can be reduced while the early part of diffusion combustion is increased.",
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AU - Saito, Takeshi

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