The knock and combustion characteristics of CO, , , and their mixtures were determined experimentally in a variable compression ratio spark ignition (SI) cooperative fuel research (CFR) engine. The significant effects of gaseous fuel mixtures containing in enhancing the combustion and oxidation process of were examined. The unique combustion characteristics of CO in dry air and its distinct performance in mixtures with H-containing fuels were investigated. The addition of a simulated synthesis gas to was found to enhance the combustion process of the resulting mixture and lowers its knock resistance. The effectiveness of such an addition is slightly weaker than that of a comparable addition but much stronger than that with CO addition only. A predictive model with detailed kinetic chemistry was used successfully to simulate SI engine operation fuelled with , , CO, and their mixtures. The predicted engine performance and knock limits of , , CO, and their mixtures agree well with experimental data with the exception around pure CO operation in dry air with the presence of small amounts of or . A remedial approach to improve the prediction of the knock limits of fuel mixtures containing mainly CO with a small amount of H-containing fuels such as and was proposed and discussed.
An Experimental and Numerical Investigation of Spark Ignition Engine Operation on , CO, , and Their Mixtures
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Li, H., Karim, G. A., and Sohrabi, A. (November 30, 2009). "An Experimental and Numerical Investigation of Spark Ignition Engine Operation on , CO, , and Their Mixtures." ASME. J. Eng. Gas Turbines Power. March 2010; 132(3): 032804. https://doi.org/10.1115/1.3155795
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