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

R. Morgan; J. Wray; D.A. Kennaird; Cyril Crua; Morgan Heikal

doi:2001-01-0529

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

R. Morgan, J. Wray, D.A. Kennaird, Cyril Crua, Morgan Heikal

University of Brighton

Research output: Chapter in Book/Conference proceeding with ISSN or ISBN › Conference contribution with ISSN or ISBN › peer-review

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.

Original language	English
Title of host publication	SAE 2001 World Congress
Pages	389-399
Number of pages	11
Volume	110
DOIs	https://doi.org/2001-01-0529
Publication status	Published - Mar 2001
Event	SAE 2001 World Congress - Detroit, Michigan, March 5 - 8, 2001 Duration: 1 Jan 2001 → …

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Conference	SAE 2001 World Congress
Period	1/01/01 → …

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http://www.sae.org/congress/2001/

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2001-01-0529Licence: Unspecified

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Cite this

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title = "The influence of injector parameters on the formation and break-up of a diesel spray",

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.",

author = "R. Morgan and J. Wray and D.A. Kennaird and Cyril Crua and Morgan Heikal",

note = "http://www.sae.org/congress/2001/; SAE 2001 World Congress ; Conference date: 01-01-2001",

year = "2001",

month = mar,

doi = "2001-01-0529",

language = "English",

volume = "110",

pages = "389--399",

booktitle = "SAE 2001 World Congress",

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T1 - The influence of injector parameters on the formation and break-up of a diesel spray

AU - Morgan, R.

AU - Wray, J.

AU - Kennaird, D.A.

AU - Crua, Cyril

AU - Heikal, Morgan

N1 - http://www.sae.org/congress/2001/

PY - 2001/3

Y1 - 2001/3

N2 - 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.

AB - 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.

U2 - 2001-01-0529

DO - 2001-01-0529

M3 - Conference contribution with ISSN or ISBN

VL - 110

SP - 389

EP - 399

BT - SAE 2001 World Congress

T2 - SAE 2001 World Congress

Y2 - 1 January 2001

ER -

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

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