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Proceedings Paper

PTV analysis of the entrained air into the diesel spray at high-pressure injection
Author(s): Naoki Toda; Hayato Yamashita; Makoto Mashida
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Paper Abstract

In order to clarify the effect of high-pressure injection on soot reduction in terms of the air entrainment into spray, the air flow surrounding the spray and set-off length indicating the distance from the nozzle tip to the flame region in diffusion diesel combustion were investigated using 300MPa injection of a multi-hole injector. The measurement of the air entrainment flow was carried out at non-evaporating condition using consecutive PTV (particle tracking velocimetry) method with a high-speed camera and a high-frequency pulse YAG laser. The set-off length was measured at highpressure and high-temperature using the combustion bomb of constant volume and optical system of shadow graph method. And the amount of air entrainment into spray until reaching set-off length in diffusion combustion was studied as a factor of soot formation.

Paper Details

Date Published: 6 August 2014
PDF: 6 pages
Proc. SPIE 9232, International Conference on Optical Particle Characterization (OPC 2014), 92320C (6 August 2014); doi: 10.1117/12.2063632
Show Author Affiliations
Naoki Toda, Nippon Soken, Inc. (Japan)
Hayato Yamashita, Nippon Soken, Inc. (Japan)
Makoto Mashida, DENSO Corp. (Japan)

Published in SPIE Proceedings Vol. 9232:
International Conference on Optical Particle Characterization (OPC 2014)
Nobuhiro Aya; Norihiko Iki; Tsutomu Shimura; Tomohiro Shirai, Editor(s)

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