毕业论文-提高汽车动力性的研究.doc

郑州交通职业学院 毕 业 论 文 论文题目： 提高汽车动力性的研究 所属系别 汽车运用工程系 专业班级 汽车运用技术 姓　　名 学　　号 指导教师 撰写日期 2012 年 5 月 摘 要 汽车动力性是指在良好、平直的路面上行驶时，汽车由所受到的纵向外力决定的、所能达到的平均行驶速度。汽动力性代表了汽车行驶可发挥的极限能力。 Abstract Auto power is to point to in good, flat road road, car by external force by longitudinal decision, to achieve the average speeds. Automobile is a kind of efficient transport, the height of transportation efficiency depends to a great extent on dynamic performance of the car. So, dynamic performance is the most basic car all kinds of performance, the most important performance. On behalf of the dynamic vehicle driving may display the limit ability. This paper studies the car dynamic performance, the method and how to improve dynamic performance cars, this paper introduces the main parameters of the dynamic performance: top speed, acceleration time, maximum PaPoDu, engine the maximum power, than power, the drive wheels output power, driving force and related parameters; This paper reviewed the automobile dynamic phenomenon and dynamic performance car recession experimental methods. So as to achieve the purpose of dynamic performance optimization car. This paper puts forward the dynamic performance of the car evaluation methods are reasonable, and simple to use the car in the contrast of the dynamic performance directly, and clear. At the same time, this paper puts forward the design optimization of parameters to improve the car in order to achieve the dynamic performance of the method can in car production for the vehicle did not before the dynamic properties of optimization, the car production and efficiency has more practical meaning. Key Words：Dynamic performance, Experimental methods,Evaluation method, Practical significance 目 录 1引言 1 2汽车动力性评价指标及概述 1 2.1汽车动力性概述 1 2.2表征汽车动力性的参数 2 2.2.1评价汽车动力性指标 2 2.2.2发动机主要性能指标 4 2.2.3汽车附件消耗功率 5 2.2.4汽车传动系损耗功率 6 2.2.5车轮滚动阻力消耗功率 7 2.2.6驱动轮驱动力 8 2.2.7驱动轮输出功率 8 2.2.8驱动比功率 9 3目前汽车动力性存在的主要问题和影响因素