The influence of injector parameters on the formation and break-up of a diesel spray

Morgan, R., Wray, J., Kennaird, D.A., Crua, C. and Heikal, M. (2001) The influence of injector parameters on the formation and break-up of a diesel spray In: SAE 2001 World Congress, 5-8 Mar 2001, Detroit, USA.

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Official URL: http://www.sae.org/technical/papers/2001-01-0529

Abstract

The influences of injector nozzle geometry, injection pressure and ambient air conditions on a diesel fuel spray were examined using back-lighting techniques. Both stills and high-speed imaging techniques were used. Operating conditions representative of a modern turbocharged aftercooled HSDI diesel engine were achieved in an optical rapid compression machine fitted with a common rail fuel injector. Qualitative differences in spray structure were observed between tests performed with short and long injection periods. Changes in the flow structure within the nozzle could be the source of this effect. The temporal liquid penetration lengths were derived from the high-speed images. Comparisons were made between different nozzle geometries and different injection pressures. Differences were observed between VCO (Valve Covers Orifice) and mini-sac nozzles, with the mini-sac nozzles showing a higher rate of penetration under the same conditions.

Item Type:Contribution to conference proceedings in the public domain ( Full Paper)
Additional Information:http://www.sae.org/congress/2001/
Subjects:H000 Engineering > H300 Mechanical Engineering > H330 Automotive Engineering
DOI (a stable link to the resource):2001-01-0529
Faculties:Faculty of Science and Engineering > School of Computing, Engineering and Mathematics > Engineering and Product Design Research > Automotive Engineering
ID Code:3010
Deposited By:Dr Cyril Crua
Deposited On:11 Mar 2010
Last Modified:09 Oct 2010 02:17

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