【作者】 郭美华；

【导师】 李翔晟；

【作者基本信息】 中南林业科技大学 ， 机械设计及理论， 2009， 硕士

【摘要】 汽车变速器是汽车传动系统的重要组成部分,其性能的优劣直接影响传动系统的性能及整车的质量。随着汽车产量的不断增长,对变速器的需求也不断增加,同时对汽车变速器的质量要求也越来越高,这就要求既要有高科技的加工手段,也要有高性能的检测设备。变速器长时间的可靠性试验以及大批量产品的性能试验,造成了能量的大量损耗,在能源危机日益加剧的今天,这显然是极不合理的。为了节约试验能耗和降低成本,应采取措施将这部分能量回收再利用。因而,研究节能型的汽车变速器试验系统,就显得极为迫切和重要。本文综合分析了大量国内外有关资料,针对现有变速器试验系统存在的一些不足,提出了汽车变速器功率完备试验系统思想,该系统主要包括机械结构、液压加载、能量回收和控制等部分,对能量耦合器、能量回收系统等进行了理论分析、计算和设计。采用电液比例技术,实现对试验转矩的平稳加载,使系统简化,操作简单,并建立了试验系统相关总成的数学模型,根据变速器试验标准,利用MATLAB/Simulink和AMESim软件对系统进行联合仿真,对系统的能量回收进行了仿真计算。研究结果表明,本方案试验时可以有效减少原动力功率消耗,通过对系统压力、流量等主要参数对系统性能的影响的研究,得出了系统参数变化的特性曲线及相应有益的结论,为今后的研究与开发提供了理论基础。更多还原

【Abstract】 The automobile gearbox is the importance that the automobile spreads to move system to constitute part, the function directly influences the transmission system and the whole quality of the car. Extend continuously along with the automobile market, the request of the automobile profession to gearbox increases continuously, requesting to be high also and more and more to the quality of the automobile gearbox, this will beg since have to have the process of high technology means, and then have to have the examination equipments of the high quality. The long time experience and life-span test of automobile gearbox is very expensive. Many energy is lost. It is clear this is unreasonable. In order to save energy and reduce costs. We should take measure to reuse this energy. As a result, it is urgent and important to develop the system of economy energy type in the automobile gearbox set.In this paper, after learning a large number of domestic and foreign information, design a complete automatic power transmission testing system. Expounded the design program of the test system. The test system is mainly divided into three parts:the part of mechanical structure, hydraulic part and control part. At first, introduce the main structure, features and working principle of the automobile gearbox test system. we choose the loading equipment, energy recovery equipment, motor and sensor. The focus is the design of the energy coupler and the analysis of the energy recovery equipment. Without that, create mathematical models of motor and hydraulic systems. A simulation is built up with simulink toolbox of MATLAB system and AMESIM.The energy of the hydraulic recycle system is analyzed, and the power of motor and the energy loss are simulated.Through the analysis of experimental data and comparison with the simulation results, the method of dynamic modeling is regarded as a practicable idea. The effects of main parameters on system performance are discussed and some valuable results are obtained. This is useful for the designing of real system. All the work in this thesis offered a reference of CVT research and design for the future.更多还原