供油提前角对柴油醇发动机热效率的影响  

Effect of Fuel Supply Advance Angle on Thermal Efficiency of Diesel Engines Fuelled with Diesohol

作　　者：陈振斌[1] 何金戈[1] 肖明伟[1] 张惜辉[1] 

机构地区：[1]海南大学机电工程学院,海南儋州571737

出　　处：《昆明理工大学学报（自然科学版）》2011年第1期31-34,39,共5页Journal of Kunming University of Science and Technology(Natural Science)

基　　金：2007年公益性行业(农业)科研专项经费项目(项目编号:3-57);海南省自然科学基金资助项目(项目编号:808126)

摘　　要：以燃用柴油醇的双缸柴油发动机为研究对象,通过发动机台架试验研究的方法,对柴油醇和纯柴油在额定转速1500 r/min和不同负荷条件下的发动机热效率进行了对比试验研究.结果表明:在额定供油提前角22℃A和不改动发动机结构情况下,相对于纯柴油,柴油醇发动机热效率在高负荷时有所改善;适当减小供油提前角对提高柴油醇发动机热效率有利.综合考虑发动机的经济性和柴油醇的推广应用,使用E10柴油醇的较优供油提前角为22℃A(原机),使用E15和E20柴油醇的较优供油提前角都为20.5℃A.Comparative experiments between the diesohol and diesel fuel are done on a 2-cylinder diesel engine,to study the engine thermal efficiency under different fuel supply advance angles and engine loads at engine speed of 1500 r/min.The results of experiments show that compared with the diesel fuel,the diesohol leads to proper increase in thermal efficiency under high loads,without modifications in engine structures when the fuel supply advance angle is 22℃A.Besides,reducing properly fuel supply advance angle is beneficial to increasing the engine thermal efficiency.With regard to engine economical performances and practical application of diesohol,the most appropriate one for engine fueling with E10 diesohol is 22℃A,while the most appropriate one for engine fueling with E15 and E20 diesohol is 20.5℃A.

关 键 词：柴油发动机 柴油醇 供油提前角 热效率 

分 类 号：TK464[动力工程及工程热物理—动力机械及工程]