Abstract

Global warming and the ever increasing emission levels from combustion engines have forced the engine manufacturers to look for alternative fuels for better engine performance and low emissions. Gaseous fuel mixtures such as biogas, syngas, and liquefied petroleum gas (LPG) are new alternative fuels that have great potential to be used with combustion engines. In the present work, alternative fuel mixtures, mainly LPG (60% butane, 20% iso-butane and 20% propane) and methane in addition to other gases and fuels such as hydrogen, oxygen, carbon dioxide and nitrogen, will be studied to observe how the change in the fuel mixture composition affects the combustion characteristics of this fuel, specially the laminar flame speed (SL).

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