本科毕业设计论文--12米纯电动公交客车整车性能计算.doc

摘要 进入21世纪以来，随着社会的发展，全球汽车保有量持续增加全球的能源危机和环境问题日益严重，石油等化石燃料随着人们的消耗越来越少，而燃烧化石燃料带来的环境问题对社会发展的负面影响则日益严重。目前世界各国都将发展新能源汽车作为未来汽车发展的方向，我国新能源汽车产业也被纳入“七大战略性新兴产业”之中。纯电动汽车作为新能源汽车的一种，能实现零排放，具有显著的节能减排效果，是新能源汽车领域发展的最终方向。 在纯电动汽车领域，优先发展纯电动城市公交客车意义重大，不仅能在很大程度上减少市区的环境污染，而且根据公交车本身的运行特点，如线路固定，频繁启停等，也与纯电动车的运行特点相符。 本文以东风EQ6120EVL3为分析对象，在企业的工程师根据设计任务书选取的电机和各个总成后进行整车的性能计算，包括整车的动力性，悬架系统的性能，制动系统的性能，转向系统的性能，并且将所得到的结果与设计任务书中的开发要求和国家标准进行对比校核，来确定选取的电机和各个总成的合理性。这样可以在产品试制前就能判断所选取的总成是否合理，减少试制和试验成本，缩短产品开发周期。最后使用MATLAB/GUI编写用户操作界面，方便用户查阅该车型的动力性和各个总成的性能参数，并且绘制曲线图来更加直观的表现汽车的性能。 关键词：纯电动汽车；整车性能计算；用户操作界面；动力性；校核Abstract Since entering the 21st century, with the development of the society, the global car ownership increased global energy crisis and environment problem increasingly serious, the consumption of fossil fuels such as oil as people less and less, and the burning of fossil fuels environmental problems brought by the negative effect on the social development is increasingly serious.Now all countries in the world the development of new energy vehicles as the direction of future development, new energy automobile industry in our country has been built into the seven strategic emerging industries.Pure electric vehicles as a kind of new energy vehicles, can realize zero emissions, has significant effect of energy conservation and emissions reduction, is the final direction of new energy automobile industry development. Priority to the development of in the field of pure electric vehicles, pure electric city bus is of great significance, not only can reduce the pollution of urban environment to a great extent, and according to the characteristics of the bus itself, such as fixed lines, such as frequent start-stop, also accords with the characteristics of pure electric vehicles. Taking dongfeng EQ6120EVL3 as analysis object, engineers in the enterprise according to the design plan descriptions of the selection of motor and the assembly after the calculation of the vehicle performance, including vehicle