International Conference


TitleYongrae Kim, Kyoungdoug Min, Min Soo Kim, Suk Ho Chung and Choongsik Bae, “Development of a Reduced Chemical Kinetic Mechanism and Ignition Delay Measurement in a Rapid Compression Machine for CAI Combustion”, SAE Paper 2007-01-0218, presented at SAE Congress, Detroit, April, 2007.

Yongrae Kim, Kyoungdoug Min, Min Soo Kim, Suk Ho Chung and Choongsik Bae, “Development of a Reduced Chemical Kinetic Mechanism and Ignition Delay Measurement in a Rapid Compression Machine for CAI Combustion”, SAE Paper 2007-01-0218, presented at SAE Congress, Detroit, April, 2007.

Abstract

A reduced chemical kinetic mechanism for a gasoline surrogate was developed and validated in this study for CAI (Controlled Auto Ignition) combustion. The gasoline surrogate was modeled as a blend of iso-octane, n-heptane, and toluene. This reduced mechanism consisted of 44 species and 59 reactions, including main reaction paths of iso-octane, n-heptane, and toluene. The ignition delay times calculated from this mechanism showed a good agreement with previous experimental data from shock tube measurement. A rapid compression machine (RCM) was developed and used to measure the ignition delay times of gasoline and surrogate fuels in the temperature range of 890K -1000K. The RCM experimental results were also compared with the RCM simulation using the reduced mechanism. It was found that the chemical reaction started before the end of the compression process in the RCM experiment. And the ignition delay time of the suggested gasoline surrogate was similar to that of gasoline. Finally an engine experiment on CAI combustion was performed by using a single cylinder research engine. A simple, 0-D engine simulation was conducted using the reduced mechanism, which was then compared with the engine experimental data.

 

PreviousKitae Yeom and Choongsik Bae, “The Combustion of Liquefied Petroleum Gas in Stratified and Homogeneous Charge Compression Ignition Engine”, Proc. 6th international colloquium Fuels, pp201-208, January 10-11, Stuttgart, Germany, 2007.
NextSeoksu Moon, Jaejoon Choi, Kitae Yeom and Choongsik Bae, Measurements of Droplet Size Distribution and In-Cylinder Mixture Formation from a Slit Injector in a Direct-Injection Gasoline Engine, Third International Conference on Optical and Laser Diagnostics (ICOLAD 2007), May 2007, London, UK.

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