Characterization of the spray of the DISI multi-hole injector by means of phase doppler anemometer

Fatma Ahmed, Nobuyuki Kawahara, Eiji Tomita, Mamoru Sumida

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The spray from a multi-hole injector applied to direct injection spark ignition (DISI) engine was investigated. In order to understand the detailed structure of the transient spray near the nozzle a combined LDA/PDA system was used. PDA system was optimized in order to detect relative smaller droplets. Size-classified technique was used to get deep information about the spray characterizations near nozzle. The experiments were performed at 7 MPa of injection pressure. At early stage of spray the droplet velocity distribution in the centre of the spray showed high value. Smaller droplets under 15 μm showing followability to air flow, while larger droplets over 20 μm will have drag due to momentum decay. Droplets of 15

Original languageEnglish
Pages (from-to)36-50
Number of pages15
JournalJournal of Thermal Science and Technology
Volume5
Issue number1
DOIs
Publication statusPublished - 2010

Fingerprint

spark ignition
anemometers
Anemometers
Direct injection
Electric sparks
injectors
sprayers
Ignition
injection
Personal digital assistants
nozzles
Nozzles
air flow
Velocity distribution
Internal combustion engines
drag
Drag
engines
Momentum
velocity distribution

Keywords

  • Atomization
  • Multi-hole injector
  • Phase doppler anemometer
  • Size-classified droplet behavior
  • Spray

ASJC Scopus subject areas

  • Materials Science(all)
  • Instrumentation
  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)

Cite this

Characterization of the spray of the DISI multi-hole injector by means of phase doppler anemometer. / Ahmed, Fatma; Kawahara, Nobuyuki; Tomita, Eiji; Sumida, Mamoru.

In: Journal of Thermal Science and Technology, Vol. 5, No. 1, 2010, p. 36-50.

Research output: Contribution to journalArticle

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