中型载货汽车总体设计说明书.doc

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1、中型载货汽车总体设计说明书课程设计学院：机械与动力工程学院班级：车辆一班：母兵魁学号：6指导教师：凯辉目录摘要·······························································1概述·······························································2设计任务书·························································4第1章、汽车形式和主要参数的初步确定····

2、··························5一、汽车形式的选择·············································51.1、汽车轴数···············································61.2、驱动形式················································61.3、布置形式················································7二、汽车主要参数的选择·······

3、··································72.1、汽车主要尺寸参数的确定··································72.2、轴荷分配···············································10第2章整车主要性能参数的确定和计算································11一、发动机的选择··············································111.1发动机最大功率及其转速的确定····

4、··························111.2发动机最大转矩及其转速的确定······························121.3发动机主要参数············································13二、配置大柴BA6M1013-28E3发动机的整车性能计算················162.1汽车动力性能计算········································162.2汽车的加速性能计算·························

5、·············18三、轮胎的选择·················································18四、汽车重要性能参数和车身造型图······························19五、变速器档位数的选择········································20第3章、总体布置····················································20一、总体布置要求与分析·······················

6、··················20二、总体布置草图················································24设计总结···························································26参考文献··························································27摘要汽车的总体设计是汽车设计工作中最重要的一环，它对汽车的设计的质量、使用性能和在市场上的竞争力有着决定性的影响。因为汽车性能

7、的优劣不仅与相关总成及部件的工作性能有密切关系，而且在很大程度上还取决于有关总成及部件间的协调与参数匹配，取决于汽车的总体布置。货车的总体设计主要包括货车的参数确定，发动机和轮胎的选择，总体布置和动力性的计算等一系列重要的步骤。其中参数的确定又包括了汽车的质量参数，主要尺寸和性能参数的计算等。而本次课程设计同时应用到了EXCEL，、等计算机辅助软件，再通过多次校核质心位置和各部分的总成以保证货车的轴荷分配合理。关键词：货车总体设计；整备质量；动力性；燃油经济性。概述1.汽车总体设计的特点汽车主要在宽度有限的道路上行驶，同时与汽车比较，

8、还有人、自行车、摩托车等弱势群体也在使用同一道路，因此存在交通隐患。为了在有限的道路上容纳更多的车辆运行，减少交通事故以及从汽车造型和减轻质量等方面考虑，对汽车的外形尺寸需要予以限制。2.汽车总体设计的基本要求(1)汽车