Abstract
Fuels which have different composition ratio of saturated and unsaturated fatty acid methyl esters (FAME) are made by mixing several plant based FAMEs. The power is slightly reduced when CME (Coconut ME) mixed with SME (Soybean ME) or PME (Palm ME) because of lower calorific value of CME, however thermal efficiency and exhaust gas emissions are improved, because CME has a lot of oxygen atoms and superior ignitability. The fuel which is equal mixture of SME and CME shows almost the same ignitability as that of PME because weight proportion of saturated and unsaturated FAMEs is almost equal to that of PME.
