The Affect of Fuel Properties on Exhaust Emissions Formation of Used Vegetable Oil in a Diesel Engine

폐식용유를 연료로 하는 디젤 기관(機關)의 배기(排氣) 배출물 생성(生成)에 미치는 연료(燃料) 성상(性狀)의 영향(影響)

Exhaust emissions in diesel engine are affected by fuel properties, but the reason for this is not clear. Especially, the recent strong interest in using low-grade fuel such as used vegetable oil as alternative diesel fuel demands extensive investigation in order to clarify the exhaust emissions. The purpose of this study is to evaluate the feasibility of a used vegetable oil as an alternative fuel in a diesel engine in terms of exhaust emissions. The emission concentration of used vegetable oil such as formaldehyde and acrolein is two times than that of diesel fuel. However, since that of alcohol is ten times than that of used vegetable oil and that concentration is very low, it is not a problem for human health.