In-cylinder study of the formation, autoignition and soot production of diesel sprays at elevated pressures

Cyril Crua, J.C. Evans, D.A. Kennaird, Morgan Heikal

Research output: Chapter in Book/Conference proceeding with ISSN or ISBNConference contribution with ISSN or ISBN

Abstract

The effects of in-cylinder and injection pressures on the formation and combustion of diesel sprays at realistic automotive in-cylinder conditions was investigated. By combining the results obtained with high-speed video of the liquid phase, high-speed schlieren video of the vapour phase, high-speed video of autoignition and laser-induced incandescence (LII) of soot, a detailed observation of the combustion processes was obtained for elevated in-cylinder and injection pressures. The spray dispersion angles, tip penetrations with time, autoignition delays and relative soot concentrations were measured for a range of injection and in-cylinder pressures. The tests were performed on a single-cylinder diesel rapid compression machine with optical access to the combustion chamber. A common rail injection system was used with an injector mounted with a single-hole VCO type nozzle. The injection pressure was varied from 60 to 160 MPa, the in-cylinder pressure and temperature at top dead centre from 6 to 10 MPa and from 540 to 720 K, respectively. The results obtained from the various measurement techniques were combined in order to produce a comprehensive observation of diesel spray development and combustion.
Original languageEnglish
Title of host publication9th International Conference on Liquid Atomization and Spray Systems (ICLASS)
Pages1-13
Number of pages13
Publication statusPublished - 13 Jul 2003
Event9th International Conference on Liquid Atomization and Spray Systems (ICLASS) - Sorrento, Italy
Duration: 13 Jul 2003 → …

Conference

Conference9th International Conference on Liquid Atomization and Spray Systems (ICLASS)
Period13/07/03 → …

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    Crua, C., Evans, J. C., Kennaird, D. A., & Heikal, M. (2003). In-cylinder study of the formation, autoignition and soot production of diesel sprays at elevated pressures. In 9th International Conference on Liquid Atomization and Spray Systems (ICLASS) (pp. 1-13) http://www.ilass-eu.ic.ac.uk/events.htm