重载车辆液力机械变速器试验系统研究

发布时间：2018-06-28 12:26

本文选题：重载车辆 + 液力变矩器　；参考：《浙江大学》2016年硕士论文

【摘要】：重载车辆具有发动机功率大、行驶条件恶劣、载荷冲击大等特点,这对作为车辆传动系统重要部件的变速器提出了更高的要求。液力机械变速器具有传递扭矩大、过载能力强、载荷适应能力强的特点,特别适合在重载车辆上使用。目前,国外液力机械变速器技术已经发展成熟,我国尚处于起步阶段,特别是在大功率、多档位液力机械变速器方面,我国关键技术基础薄弱,不能实现产业化。对重载车辆液力机械变速器试验系统的研究,可以促进我国重载车辆液力机械变速器的研究和开发。本文在现有研究的基础上,结合某单位“大功率动力传动装置综合性能试验系统”的科研项目,以系统中液力机械变速器为对象,对其试验系统的开发进行深入探索,具体内容如下：(1)以9档手动液力机械变速器为对象,对液力机械变速器结构及原理进行介绍。分析了发动机和液力机械变速器特性,得出了发动机和液力机械变速器联合工作特性曲线。建立了液力机械变速器试验系统Simulink模型,对液力机械变速器的工作过程及性能进行了仿真。(2)根据试验系统需求,在分析比较了几种变速器试验台形式的基础上,提出了共直流母线电力封闭式试验台作为试验系统形式。对试验系统总体方案进行了设计,对系统主要组成部分进行了介绍。最后,对电机控制方法以及通讯方法等系统搭建关键技术进行了研究。(3)介绍了重载车辆液力机械变速器试验系统实现过程,包括驱动加载系统、PLC监控系统、数据采集系统以及控制系统。最后,根据试验过程曲线对试验系统性能进行了分析,证明了该试验系统方案能够满足使用要求。
[Abstract]:Heavy duty vehicles have the characteristics of high engine power, bad driving conditions and high load impact, which puts forward higher requirements for transmission as an important part of vehicle transmission system. Hydraulic mechanical transmission has the characteristics of high torque transmission, strong overload capacity and strong load adaptability. It is especially suitable for heavy duty vehicles. At present, foreign hydraulic mechanical transmission technology has been developed and mature, China is still in the initial stage, especially in the high-power, multi-gear hydraulic mechanical transmission, China's key technology foundation is weak, can not realize industrialization. The research on the test system of heavy duty vehicle hydraulic mechanical transmission can promote the research and development of heavy duty vehicle hydraulic mechanical transmission in China. On the basis of the existing research, combined with the scientific research project of "Comprehensive performance Test system of High Power Power Transmission", this paper takes the hydraulic mechanical transmission in the system as the object, and makes a deep exploration on the development of the test system. The main contents are as follows: (1) the structure and principle of 9-speed manual hydraulic mechanical transmission are introduced. The characteristics of engine and hydraulic mechanical transmission are analyzed, and the joint working characteristic curve of engine and hydraulic mechanical transmission is obtained. The Simulink model of hydraulic mechanical transmission test system is established, and the working process and performance of hydraulic mechanical transmission are simulated. (2) according to the requirements of the test system, several types of transmission test bench are analyzed and compared. A common DC bus power closed test rig is proposed as the test system. The overall scheme of the test system is designed and the main components of the system are introduced. Finally, the key technologies of motor control and communication are studied. (3) the realization process of hydraulic mechanical transmission test system for heavy-duty vehicles is introduced, including the driving and loading system and PLC monitoring system. Data acquisition system and control system. Finally, the performance of the test system is analyzed according to the test process curve, and it is proved that the scheme of the test system can meet the requirements of application.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U467.52

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