Is propane always used in gas form or could one inject liquid propane instead of gasoline in a DISI engine. i know propane is a liquid at sub zero temperatures and vapor lock might be an issue. also is propane corrosive-both gas and liquid? i would not expect it to be as there is no oxygen in the propane molecule. if propane is such a clean fuel why arent we using it in abundance? is the volumetric efficiency decrease so high?
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