毕业论文__醇类代用燃料.docVIP

摘　　要 　　随着国民经济的持续高速发展，能源危机与环境污染问题日益突出。因此，发展清洁代用燃料对于我国减少对进口原油的依赖和减轻环境污染具有十分重要的战略意义。 本文从能源短缺与环境污染的角度出发，说明发展代用燃料的必要性。充分说明醇类代用燃料是极具潜力的一种清洁代用燃料,从物质本身的结构和性能出发阐述其成为清洁代用燃料的可行性。结合使用背景和相关实验参数，说明甲醇汽油对发动机功率、扭矩、燃油消耗率等性能和常规排放物CO、HC、NOx的影响并进行论证分析。除此之外也阐述了甲醇柴油的优缺点，对它的负荷特性和常规排放物HC、NOx、颗粒物等进行了分析，从而进一步说明甲醇是一种值得去开发研究的清洁代用燃料 。本文还对乙醇进行了一定的介绍，从乙醇的基本物理化学性质分析其成为清洁代用燃料的可行性。说明乙醇汽油、乙醇柴油的使用情况，它们所具有的优缺点和目前在使用上存在的一些问题及相关改进方法。最后对清洁气体燃料——二甲醚做了相应的简介，根据它的相关性能特点说明它也是一种很有潜力的清洁代用燃料。  Abstract 　　With the high-speed development of national economy, the energy crisis and environmental pollution problems have become increasingly prominent.So,it is very important to develop clean alternative fuels to reduce dependence on imported oil and reduce environmental pollution. 　　This thesis illustrate the necessity of developing clean alternative fuels according to energy shortage and environmental pollution.Fully explains the fact that alcohol alternative fuels is of great potential as a clean alternative fuel,explaining its feasibility to be clean alternative fuels from the angle of from the structure and the properties of alcohol.illustrates the influence of methanol gasoline on engine power, torque, fuel consumption and regular emissions of CO,HC,NOx from the background and experimental data and then giving a analysis.In addition,it also describes the advantages and disadvantages of methanol diesel,and the load characteristics and regular emissions of HC, NOx, particles are analyzed to further illustrate that methanol is a worthy of research to be clean alternative fuels.This paper also introduces ethamol,and analyzes the feasibility to be clean alternative fuels from from the basic physical and chemical properties of ethanol.Give a usage description of ethanol gasoline, ethanol diesel, illustrate the advantage and disadvantage and problems in current use,and then give some related improved methods.At last,there is a breif introduction of airfuels DME,and show that it is also a promising clean al