Experimental Study on Diesel Spray Characteristics Using Different Ambient Gases Tsinghua University

Format:

Conference/Event

Author/Creator:

Li, Li, author.

Contributor:

Ding, Haichun

Guo, Hengjie

Jing, Daliang

Ma, Xiao

Wang, Jian-Xin

Conference Name:

SAE 2016 World Congress and Exhibition (2016-04-12 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2016

Summary:

AbstractThe spray characteristics is the key to achieve the clean combustion in diesel engines and the in-cylinder conditions are one of the factors affecting the spray process. In this work, the diesel spray characteristics were studied over a range of injection pressures and ambient pressures in a constant volume chamber and a single-hole common rail diesel injector was used. The present work is to decouple the effects of ambient pressure and ambient density on near-field spray processes by using different ambient gas (N2, and CO2). The spray processes were captured by a Photron SA X2 camera with speed of 300,000 fps and resolution of 256 by 80 pixels. The spray processes were analyzed in terms of penetration length and spray tip velocity. Difference in penetration length and tip velocity were found at the same ambient density and/or ambient pressure when different ambient gases were used. This may be attributed to the different gas compressibility and the intensity of momentum transfer between liquid and ambient gas

Notes:

Vendor supplied data

Publisher Number:

2016-01-0867

Access Restriction:

Restricted for use by site license