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Analysis of mixture formation and flame development of diesel combustion using a rapid compression machine and optical visualization technique

Khalid, Amir and Manshoor, Bukhari (2013) Analysis of mixture formation and flame development of diesel combustion using a rapid compression machine and optical visualization technique. Applied Mechanics and Materials, 315. pp. 293-298.

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Abstract

Mixture formation plays as a key element on burning process that strongly affects the exhaust emissions such as nitrogen oxide(NOx) and Particulate Matter(PM). The reductions of emissions can be achieved with improvement throughout the mixing of fuel and air behavior. Measurements were made in an optically-accessible rapid compression machine (RCM) with intended to simulate the actual diesel combustion related phenomena. The diesel combustion was simulated with the RCM which is equipped with the Denso single-shot common-rail fuel injection system, capable of a maximum injection pressure up to 160MPa. Diesel engine compression process could be reproduced within the wide range of ambient temperature, ambient density, swirl velocity, equivalence ratio and fuel injection pressure. The mixture formation and combustion images were captured by the high speed camera. Analysis of combustion characteristics and observations of optical visualization of images reveal that the mixture formation exhibit influences to the ignition process and flame development. Therefore, the examination of the first stage of mixture formation is very important consideration due to the fuel-air premixing process linked with the combustion characteristics. Furthermore, the observation of a systematic control of mixture formation with experimental apparatus enables us to achieve considerable improvements of combustion process and would present the information for fundamental understanding in terms of reduced fuel consumption and exhaust emissions.

Item Type: Article
Uncontrolled Keywords: swirl velocity;mixture formation;diesel combustion;ignition delay;ignition process;spray;rapid compression machine;flame pattern;image analysis
Subjects: T Technology > TJ Mechanical engineering and machinery > TJ751-805 Miscellaneous motors and engines
Divisions: Faculty of Mechanical and Manufacturing Engineering > Department of Plant and Automotive Engineering
Depositing User: Dr. Amir Khalid
Date Deposited: 15 Mar 2015 08:45
Last Modified: 15 Mar 2015 08:45
URI: http://eprints.uthm.edu.my/id/eprint/4297
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