Atomization and Sprays Journal of the International Institutes for Liquid Atomization and Spray Systems

ISSN for PRINT: 1045-5110

For Online Access

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2002, Volume12

Issue 5&6

240 pages

DOI: 10.1615/AtomizSpr.v12.i56

Issue price - $150.00

Kyungnam Ko
Department of Mechanical System Engineering, School of Engineering, Gunma University, Kiryu, Japan

Masataka Arai
Department of Mechanical System Engineering, Gunma University Tenjin-cho 1-5-1 Kiryu, Gunma 376, Japan

Both the diesel spray impinging vertically on a flat wall and adhering characteristics of the fuel on the wall were investigated experimentally. Spray tip penetration and spray volume of before-and-after impingement were measured on high-speed photographs of the spray, which was injected by a single-shot injection system into a high-pressure chamber in cold state. In order to measure the adhered fuel mass, a thin aluminum plate was placed on the impingement wall. The amount of fuel that stuck on the plate was measured by a precision balance. The volume of impingement spray increased more than that of the free spray when the spray was impinged on the wall before the breakup. Also, by decreasing impingement distance, the air-fuel ratio increased. The spray volume and the air-fuel ratio were greatly affected by the wall distance, while ambient pressure did not much affect them. Impingement of the diesel spray caused a lean fuel concentration in comparison with that of the free spray. Also, the air-fuel ratio was considerably affected by the adhering fuel mass.

DOI: 10.1615/AtomizSpr.v12.i56.130 Download article, 16 pages

Article price - $35.00

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