T204环卫车动力传动系统的匹配及优化分析

发布时间：2018-06-30 07:49

本文选题：动力传动系 + 匹配　；参考：《吉林大学》2016年硕士论文

【摘要】：随着我国汽车行业的飞速发展,汽车成为了我们日常生活当中有着不可替代的交通工具,但随之给我们的环境带来了恶劣的影响。据统计分析可知,我国重型商用车消耗着大量的能源,并且其数量在稳步增加,重型商用车的油耗大成为了急需解决的问题。随着环保意识的增强,各地区的环卫车的数量也不断增加,按照2015年的政府采购信息可知,采购额已占专用车的50%。然而由于环卫车的装载变化大等工作特点,动力传动系统很难兼顾在各个工况时的动力性与经济性。本文以一款配置10档变速箱的环卫车为研究对象,在满足环卫车的行驶需求的前提下,通过优化传动比参数与换挡规律的方式优化环卫车的燃油经济性。本文首先利用Cruise软件根据环卫车的动力传动系统搭建了整车模型,建立了满足环卫车驾驶需求的评价指标,并根据研究需求,建立了计算任务,对比了仿真结果与实验结果,验证了模型的可靠性；计算了六工况的燃油消耗量,比较了Cruise软件的仿真结果；根据对仿真结果的分析了环卫车的动力性,经济性,确定了优化传动比及制定最佳换挡规律的优化方案。利用Cruise软件GSP模块,分别计算了动力性为主和经济性为主的换挡规律,对比了根据车速的单参数换挡规律的仿真结果；接着利用ISIGHT——CRUISE联合仿真,建立了优化数学模型,选取变速箱齿比与主减速比作为设计变量,设定C—WTVC循环工况的燃油消耗量为目标函数,优化了环卫车的动力传动系统参数；最后利用GSPOptimization计算任务,基于C—WTVC循环工况与优化后的齿比,计算得出了最佳经济性换挡规律,并与原车的仿真结果做了对比。本文研究说明,根据不同的循环工况以及驾驶需求,设计传动系统参数,制定合理的换挡规律可有效发挥车辆的节油潜力,提高车辆的燃油经济性。
[Abstract]:With the rapid development of automobile industry in China, automobile has become an irreplaceable means of transportation in our daily life, but it has brought us a bad impact on the environment. According to the statistical analysis, heavy commercial vehicles in China consume a lot of energy, and the number of heavy commercial vehicles is increasing steadily, the fuel consumption of heavy commercial vehicles has become a problem that needs to be solved urgently. With the increasing awareness of environmental protection, the number of sanitation vehicles in various regions is also increasing. According to the information of government procurement in 2015, the purchase amount has already accounted for 50 percent of the total number of special vehicles. However, due to the working characteristics of the environmental sanitation vehicle, it is difficult to give consideration to the power performance and economy of the power transmission system under various working conditions. In this paper, the fuel economy of a 10 speed gearbox sanitation vehicle is optimized by optimizing the transmission ratio parameters and gear shifting rules under the premise of satisfying the driving demand of the sanitation vehicle. In this paper, the whole vehicle model is built by Cruise software according to the power drive system of the sanitation vehicle, and the evaluation index to meet the driving requirement of the sanitation vehicle is established. According to the research demand, the calculation task is established, and the simulation results are compared with the experimental results. The reliability of the model is verified, the fuel consumption under six working conditions is calculated, and the simulation results of Cruise software are compared. The optimal transmission ratio and the optimal shift law are determined. The GSP module of Cruise software is used to calculate the shift law of power and economy respectively, and the simulation results based on the single parameter shift law of speed are compared, and then the optimization mathematical model is established by using the joint simulation of ISIGHT-cruise. The gear ratio of the gearbox and the main deceleration ratio are selected as the design variables, and the fuel consumption under C-WTVC cycle condition is set as the objective function to optimize the parameters of the power transmission system of the sanitation vehicle. Based on the C-WTVC cycle condition and the optimized gear ratio, the optimal economic shift law is calculated and compared with the simulation results of the original vehicle. This paper shows that according to different cycle conditions and driving requirements, the design of transmission system parameters and the formulation of a reasonable shift law can effectively bring the fuel saving potential of vehicles into full play and improve the fuel economy of vehicles.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U469.691

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