整车配置课程设计--载货汽车汽车动力总成匹配与总体设计

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1、目录设计任务书························································2第1章整车主要目标参数的初步确定·································31.1、发动机的选择·················································31.1.1、发动机的最大功率及转速的确定·······························31.1.2、发动机的最大转矩及转速的确定·······························41.

2、2、轮胎的选择···················································41.3、传动系最小传动比的确定·······································51.4、传动系最大传动比的确定·······································6第2章传动系各总成的选型·········································72.1、发动机的选型···············································

3、··7222.2、离合器的初步选型·············································92.3、变速器的选型················································102.4、传动轴的选型················································112.5、驱动桥的选型················································112.5.1、驱动桥结构形式和布置形式的选择················

4、············112.5.2、主减速器结构形式选择······································122.5.3、驱动桥的选型··············································12第3章整车性能计算··············································123.1、配置潍柴WD615.50发动机时的整车性能计算·····················123.1.1、汽车动力性能计算·····························

5、·············13223.1.2、汽车经济性能计算··········································17第4章发动机与传动系部件的确定·································18设计总结·························································19致谢·····························································19参考文献·······················

6、··································20附录·····························································2122设计任务书载货汽车汽车动力总成匹配与总体设计1、设计题目载货汽车动力总成匹配与总体设计2、性能参数要求根据给定参数，设计一辆最高速度≥90km/h、最大爬坡度≥30%的载货汽车。整车尺寸（长*宽*高）11976mm*2065mm*3390mm轴数4轴距（5750+1350）mm额定载质量20000kg整备质量12000kg公路行驶最高车速90km/h最

7、大爬坡度≥30%2、具体设计任务1)查阅相关资料，根据设计题目中的具体特点，进行发动机、离合器、变速箱传动轴、驱动桥以及车轮的选型。2)根据所选总成进行汽车动力性、经济性的估算，实现整车的优化配置。3)绘制设计车辆的总体布置图。4)完成至少1万字的设计说明书。22第1章整车主要目标参数的初步确定1.1发动机的选择1.1.1发动机的最大功率及转速的确定汽车的动力性能在很大程度上取决于发动机的最大功率。参考该题目中的参数，要求设计的载货汽车最高车速是ua=90km/h，那么发动机的最大功率应该大于或等于以该车速行驶时，滚动阻力功率与空气阻力功率之和，即（1-

8、1）式中，Pemax是发动机的最大功率（KW）；ηT是传动系效率（包括变速器、辅