バイオディーゼル油を燃料とする機関の性能 : 水乳化の効果 : 熱工学, 内燃機関, 動力など

概要

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This paper investigates engine performance with an emulsified fuel including used frying oil composed of vegetable oils discarded from restaurants and households. A single cylinder DI diesel engine was operated with transesterified fuel from used frying oil, the so called "biodiesel". Compared with gas oil, the BSEC of neat biodiesel improved at high loads and retarded injection timings, while the smoke density was reduced at all operating conditions. The engine performance with fairly stable emulsions of biodiesel and water was also examined, and emulsified biodiesel with 30% (vol.) water showed a significant reduction in NO_x (1 100 to 400 ppm) while maintaining the minimum BSEC value achieved with gas oil. It was also found that using biodiesel emulsion at a rated output, the trade-off relation NO_x vs. BSEC and NO_x vs. smoke improved slightly over the gas oil emulsion.
社団法人日本機械学会の論文
2001-01-25