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毕业论文-汽车不同传动比下的整车动力性和燃油经济性研究，共44页，11314字
摘 要
汽车的传动系对整车的动力性和燃油经济性有很大的影响。为实现发动机与传动系的最佳匹配，达到充分发挥汽车整车性能的目的，正确选择传动系参数成为汽车设计中的一项重要工作。本文以HFJ7130为例，计算不同传动比条件下的整车动力性和燃油经济性，在既保证整车符合国家现行燃油法规标准，同时又能满足其动力性要求的前提下，确定适合的传动比。
首先，论述汽车动力性和燃油经济性的评价指标，及汽车动力性和燃油经济性评价指标的计算方法。
其次，对HFJ7130选取不同的动力传动参数，对其整车动力性和燃油经济性进行详细的计算与分析。
关键词：动力传动系统；动力性；燃油经济性
Abstract
The transmission system has great influence on automobile，s power performance and fuel economy performance. In order to obtain the best matching between engine and transmission system and improve the performance of automobile, choosing its parameters correctly is very important in designing a car. Taking HFJ7130 as an example, this paper finished simulation calculation of its power and fuel economy performance for different transmission rates. Thinking of not only current country standard of fuel law but also realizing power performance, a suitable rate was obtained and the optimization of the car，s transmission parameter was achieved.
Firstly, automobile，s power performance and fuel economy performance indexes were discussed in detail, then the simulation calculating methods were presented in this thesis.
Secondly, using above methods to calculate and analyse automobile，s power and fuel economy performance under the conditions of different transmission rates.
Keywords: transmission system; power performance; fuel economy performance

目 录
摘 要 IX
Abstract X
前 言 1
1.1课题背景 1
1.2国内外发展现状 1
1.3主要研究内容 2
2汽车动力性和燃油经济性评价 4
2.1汽车动力性的评价指标 4
2.2汽车燃油经济性评价指标 5
2.3影响汽车燃油经济性的因素 7
2.4汽车动力性和燃油经济性综合评价 10
2.5汽车经济性和动力性的相互关系 11
2.6本章小结 12
3汽车的动力性计算 13
3.1汽车车身及发动机参数 13
3.2汽车动力性计算 18
3.3本章小结 28
4汽车燃油经济型计算 29
4.1等速行驶工况燃油消耗量计算 30
4.2多任务况循环行驶燃油消耗量计算 34
4.3等减速行驶工况燃油消耗量的计算 36
4.4怠速停车时的燃油消耗量 37
4.5整个循环工况的百公里燃油消耗量 37
4.6本章小结 37
结 论 38
致 谢 39
参考文献 40
附录 43