装载机混合动力系统研究

发布时间：2018-04-04 06:20

本文选题：轮式装载机　切入点：混合动力　出处：《长安大学》2014年硕士论文

【摘要】：工程机械由于其独具特色的作业特点以及特别的应用场合，导致其普遍存在高油耗高污染的弊病。随着全球能源需求与资源匮乏之间的矛盾加剧，使工程机械的使用成本逐渐升高，装载机作为工程机械中应用最广泛的机种，对其进行的研究非常具有代表性。本论文基于现代装载机平台进行更深入的混合动力系统研究，将能够促进装载机混合动力技术的应用水平，实现装载机的节能降耗。论文以ZL50装载机作为研究对象，首先对混合动力工程机械的研究现状进行了分析，在研究了装载机典型作业循环以及作业负荷特性的基础上，对装载机混合动力系统进行设计以及参数匹配，所研究的装载机混合动力系统主要由发动机、发电/电动机以及储能元件等部件组成，通过分析各主要部件的工作特性，获得相应的数学模型，在软件Matlab/simulink中建立系统仿真模型，并对混合动力装载机与传统装载机动力系统的仿真模型施加载荷进行仿真分析，得到混合动力系统发动机转矩、转速以及耗油量变化曲线。将混合动力装载机与传统装载机仿真结果进行对比分析，可知在动态负载条件下，混合动力装载机发动机的转矩、转速波动幅度较小，发动机运行十分平稳，负载适应性明显增强。同时，混合动力装载机耗油量明显低于传统装载机，，实现了装载机节能的目的。
[Abstract]:Because of its unique operation characteristics and special applications, construction machinery has the disadvantages of high oil consumption and high pollution.As the contradiction between the global energy demand and the scarcity of resources intensifies, the cost of construction machinery is rising gradually. As the most widely used machine in construction machinery, the research on it is very representative.Based on the platform of modern loaders, this paper makes more in-depth research on hybrid power systems, which will promote the application level of hybrid power technology of loaders and realize the energy saving and consumption reduction of loaders.In this paper, ZL50 loader is taken as the research object. Firstly, the research status of hybrid engineering machinery is analyzed, and the typical working cycle and the working load characteristics of loader are studied.The hybrid power system of loader is designed and its parameters are matched. The hybrid power system of loader is mainly composed of engine, power generation / motor and energy storage components. The working characteristics of the main components are analyzed.The corresponding mathematical model is obtained, and the system simulation model is established in the software Matlab/simulink. The torque of the hybrid power system engine is obtained by applying the load to the simulation model of the hybrid loader and the traditional loader power system.Speed and fuel consumption change curve.The simulation results of hybrid loader and traditional loader are compared and analyzed. It is known that under dynamic load conditions, the torque and speed fluctuation of hybrid loader engine is small, and the engine is running smoothly.The load adaptability is obviously enhanced.At the same time, the fuel consumption of hybrid loader is obviously lower than that of traditional loader.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TH243

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