【作者】 王鹏；

【导师】 张农；

【作者基本信息】 湖南大学 ， 机械工程， 2016， 硕士

【摘要】 随着社会的发展,我国城市化在不断加深,伴随而来的是城市清洁问题的突出。传统的人力清扫模式已经远远不能够满足城市对道路清洁的要求,道路洗扫车由于其清洁效率高、方便快捷、功能全面的特点在环卫领域得到越来越广泛的应用。但是传统道路洗扫车在清扫作业时,行驶速度慢,主发动机运行状况差,尾气排放和燃油效率都比较低。混合动力技术在洗扫车的应用,结合了混合动力与洗扫车的各自优点,使得新型混合动力洗扫车的清扫能力更强,对环境的影响更小,为环卫车辆在新能源领域的发展奠定良好的基础。本文是某产学研项目,在传统双发动机洗扫车基础上,结合混合动力技术,进行分析研究,最终将其改造为一款新型混合动力单发动机洗扫车,达到节能减排的目标。本论文具体开展和完成了如下研究工作:(1)分析课题背景和意义。对国内外混合动力洗扫车技术的现状进行综述,分析了本文新型混合动力洗扫车的应用前景和意义。(2)研究传统双发动机洗扫车的结构和原理,分析各种形式的混合动力系统应用在洗扫车上的利弊。根据原型车的结构特点和功能要求,对新型混合动力洗扫车动力系统进行设计。(3)研究洗扫车在各个工况下的能量需求。考虑整车动力性、经济性、整车布置的基础上,对新型混合动力洗扫车的主要部件参数进行了匹配计算,并确定了各个零部件的基本参数。(4)分析洗扫车在转场模式和清扫模式下各个部件的运行状况,制定了了以清扫高效、动力性强、燃油消耗低,排放良好和安全为原则的混合动力洗扫车控制策略。(5)运用AVL_CRUISE和Simulink联合仿真平台,建立了混合动力洗扫车的物理模型,并根据洗扫车的实际运行路况进行仿真分析。通过联合仿真结果与原双发动机洗扫车数据做对比,对本混合动力洗扫车方案的动力性和经济性进行了验证。本文的仿真结果表明该新型混合动力洗扫车能够实现原洗扫车的所有功能,并达到节能减排的目标。本文的研究成果会在实际的洗扫车中应用,具有重要的社会价值。更多还原

【Abstract】 With the development of society and the deepening of urbanization, the problem of road cleanness is getting more serious. Traditional human cleaning mode can not meet the requirements of road cleanness. The sweeper which is specially used in cleaning road has been widely used in cities because of its high efficiency and convenient characteristics. But when the traditional road sweeper is cleaning, its speed is very slow. So the operation situation of themain engine is quite poor, that means the emissions and efficiency is also very bad. The application of hybrid technology to sweeper, which could be made best use of the advantages of both technology,could overcome disadvantages of the traditional sweeper and make the hybrid sweeper more environmentally-friendly, it could lay the foundation for the development of the hybrid sweeper of China.In this paper, a traditional sweeper is redesigned into a hybrid one so that the oil consumption and emission could be reduced. The research is mainly focused on two aspects, design of hybrid sweeper powertrain system and development of control strategy. The main research work is listed in the following:(1) Current situation of hybrid sweeper truck aboard and domestic was summarized, the potential application and research significance were analysed simultaneously.(2) The structure and principle of the traditional sweeper was studied, advantages and disadvantages of different hybrid sweeper are analysed in the paper. Based on the structure and requirements of the traditional sweeper, the powertrain system for new hybrid sweeper was designed.(3) The energy requirement of the sweeper in each condition were studied. On the basis of power performance, economy and components lay out, model selection and parameter matching were accomplished and parameters of powertrain system were calculated.(4) With analyzing state of each component in transporting mode and cleaning mode, the control strategy of hybrid sweeper is designed based on the principle of the cleaning efficiency, strong power, low fuel consumption, emissions and safety(5) Based on AVL_CRUISE and Simulink co-simulation platform, the physical model of hybrid sweeper has been established. And the simulation of the hybrid sweeper based on this platform is conducted according to the actual condition of the roads sweeper. Through the comparison between simulation results and test results of the prototype sweeper, power performance and economy of the hybrid sweeper is verified.Results of the co-simulation show that the new hybrid sweeper can realize all functions of traditional sweeper, and achieve the effect of saving energy and reducing emissions. Research results of this paper will be applied to actual sweeper, and it has great potential social value.更多还原