ZL50型装载机动力匹配技术与使用研究

发布时间：2018-01-06 09:43

本文关键词：ZL50型装载机动力匹配技术与使用研究　出处：《湖南大学》2015年硕士论文　论文类型：学位论文

【摘要】：随着非道路移动机械用柴油机升级T3(非道路移动机械用柴油机排气污染物排放限值第三阶段)要求,对装载机的节能、环保、效率要求越来越高。掌握装载机动力匹配技术对于装载机以及装载机用发动机的开发至关重要。本文研发一款7.8L排量达标T3高压共轨的先进发动机过程中,采用数值仿真分析以及试验验证相结合的方法对该柴油机匹配性进行研究,本文的研究结论和创新点如下:(1)针对装载机用发动机的特点,将原型机YC6112从增压中冷机型,通过燃油系统升级、电控精细标定、性能全新开发等方面的研究和改进,将其改造成排放达标、性能优良的6G-T3机型,成为国内首款电控共轨达标T3的装载机专业动力。(2)基于AVL-CRUISE软件开发了具有针对性的装载机动力匹配模型,用于装载机传动系统的匹配计算以及后数据处理。用该模型对6G-T3柴油机匹配ZL50型装载机的整车动力性、经济性进行了仿真分析,结果表明:整车性能指标达标,发动机响应跟随性好,6G-T3柴油机与ZL50型装载具有良好的匹配性。(3)设计开发了装载机整车综合性能试验台,包括最大牵引力试验台和铲装试验台两部分。其中牵引力试验台开创性的设计了可升降门架系统,可以兼顾不同种类、不同高度车辆测试需求;铲装试验台创新设计了“U”型挡土墙和试验距离感应提醒装置。用该试验台对6G-T3柴油机搭载的装载机进行最大牵引力、三项和以及作业效率、作业油耗等试验,结果表明:6G-T3电控共轨柴油机匹配ZL50型装载机整车响应得到了大幅度的提高,实际作业循环油耗也得到大幅下降。
[Abstract]:With the upgrading of T3 diesel engine for off-road mobile machinery (the third stage of exhaust pollutant emission limit for non-road moving machinery diesel engine), energy saving and environmental protection for loaders have been achieved. The efficiency requirement is higher and higher. Mastering the power matching technology of loader is very important to the development of loader and loader engine. In this paper, an advanced engine process with 7.8L displacement up to T3 high pressure common rail is developed. Middle. The matching performance of the diesel engine is studied by the method of numerical simulation and experimental verification. The conclusions and innovations of this paper are as follows: 1) aiming at the characteristics of the loader engine. Through the research and improvement of fuel system upgrade, electronic control fine calibration, new performance development and so on, the prototype machine YC6112 is transformed from supercharged and intercooled model to emission standard. 6G-T3 model with excellent performance. It has become the first domestic electronic control common rail to reach T3 professional power.) based on AVL-CRUISE software developed a targeted loader dynamic matching model. It is used for the matching calculation and post-data processing of loader transmission system. The power performance and economy of 6G-T3 diesel engine matching ZL50 loader are simulated and analyzed by using this model. The results show that the performance index of the whole vehicle is up to the standard, and the engine response follow ability is good. 6G-T3 diesel engine has a good match with the ZL50 loading.) the comprehensive performance test bed of the loader is designed and developed. It includes two parts: the maximum traction test bench and the shovel test bench. The towing test bench has designed the lifting door frame system which can take into account the vehicle testing requirements of different types and different heights. The "U" retaining wall and the test distance sensing warning device were designed by the shovel test-bed. The test bench was used to carry out the maximum traction, three-item sum and working efficiency on the loader on the 6G-T3 diesel engine. The results show that the response of the whole car matching ZL50 type loader is greatly improved, and the fuel consumption of the actual operation cycle is also greatly reduced as a result of the test of fuel consumption in the operation of the 1: 6G-T3 electrically controlled common-rail diesel engine.
【学位授予单位】：湖南大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TH243

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