Abstract
Ethylene glycol monobutyl ether palm oil monoester (EGMEPM) was synthesized through transesterification with palm oil and Ethylene glycol monobutyl ether (EGME). Through L9(34) orthogonal experiments, optimum transesterification conditions were gained as: n(EGME):n(palm oil) = 10:1, w(metal sodium) = 1.2% total amount of alcohol at 70°C for 120 min. EGMEPM yielded 85.7%. The new biofuel had a high cetane number (77), good solubility, and a large flash point. Engine combustion experiment testified that burning the novel bioenergy has little influence on engine operation. Compared with 0# diesel fuel, the pressure lifting ratio reduced 2.9%–23.9% for B25 blends and 12.8%–38.9% for the novel bioenergy (B100), and the maximal instantaneous heat release rate lowered by 11.6%–33.3% for B25 and by 26.8%–42.7% for B100, respectively. When the diesel engine burnt B100 under partial loads at 1400 rpm, smoke, CO, HC, and NOX emissions were reduced.
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