二甲醚(DME)作為柴油引擎替代燃料對排氣污染影響之研究

Effects on Emissions of a Naturally Aspirated Di Diesel Engine with Dimethyl Ether as an Alternative Fuel

黃慶祥(Ching-Shyang Hwang) ； 吳中興(Chung-Hsing Wu) ； 朱健松(Jain-Song Ju)

《農業機械學刊》 8卷2期 (1999/06) Pp. 23-33

https://doi.org/10.30062/JAM.199906.0003

摘要

二甲醚（DiMethyl Ether，簡稱DME）為新發現的柴油引擎替代燃料。本研究依據二甲醚的性質估算噴射量及噴射泵排量，並據以改裝一自然進氣直接噴射柴油引擎之燃料噴射系統，以二甲醚作為燃料進行運轉試驗。試驗結果顯示：其性能與柴油引擎相近。排煙污染度(Smoke)低至1％。與柴油引擎相較，氮氧化物(NO(下标 x))排量減少約42％，但碳氫化合物(HC)與一氧化碳(CO)排量較高。

關鍵字

柴油引擎 ； 替代燃料 ； 二甲醚 ； 排氣污染

並列摘要

A naturally aspirated direct injection diesel engine with pump-line-nozzle injection system was retrofitted in order to be fueled with DiMethyl Ether (DME) which was recently discovered to be suitable as an alternative fuel for diesel engine. The modifications of the fuel system were based on the estimation of pump swept volume and injection quantity. The performance and the exhaust emissions were experimentally determined. The results were as follows. The engine efficiencies were slightly lower. The exhaust smoke, which is the index of particulate emission, was low enough to 1% opacity. The reduction in NO(subscript x) emission by 42% was observed as compared to the baseline diesel engine. However, HC and CO emissions were higher than those of the traditional diesel engine.

並列關鍵字

Diesel engine ； Alternative fuel ； Dimethyl ether ； Exhaust emissions