摘要: |
Biodiesel is defined as the mono alkyl esters of long chain fatty acids derived from vegetable oils or animal fats. The term Fatty Acid Methyl Ester (FAME) is often used as a generic expression for the trans-esters of these naturally occurring triglycerides which find application as either a replacement for, or a blending component for use with fossil derived diesel. In this Project No. AVFL-2a, OCTEL reports on selected biodiesels which are sued to prepare test blends at two concentrations typically used in the U.S. and Europe. Test blends were prepared from rapeseed methyl ester (RME), soy methyl ester (SME) and soy methyl ester which has been oxidized under controlled conditions. We examine and quantify the effects of test blends on fuel system component wear, including fuel pump and fuel injectors, and on the physical characteristics of elastomer materials which are commonly found in automotive fuel systems. |