摘要
发动机和液力变矩器的动力匹配对应急救援排障工程车动力性的研究具有重要意义。两者匹配的理论算法已经相对成熟,但目前算法存在对人员经验要求高、效率低的问题,针对上述问题,提出一种适用于应急救援工程车的发动机与液力变矩器逆向匹配算法,首先根据整车参数及设计指标计算确定发动机型号,再选取工程车起步、高速行驶、高效运行以及换挡四种特殊工况进行计算,得出两者共同输出特性,然后计算出变矩器的原始特性数据进行拟合,直接获取目标变矩器的原始特性曲线,以此为参考确定变矩器型号。为验证算法可行性,使用该算法对某型号的应急救援排障工程车进行计算,选定发动机与变矩器型号,使用Matlab/Simulink和Recurdyn中Soil-Tire工具包建立整车数学模型及三维模型进行联合仿真,得出发动机与液力变矩器共同工作的输出曲线及车速输出曲线,验证理论结果可以满足车辆需求。
The dynamic matching of engines and hydraulic torque converters is of great significance to the research on the dynamic performance of emergency engineering vehicle.The theoretical algorithms matching the two is relatively mature,but the existing algorithm requires high personnel experience requirement and is low efficiency.Aiming at the above problems,this paper proposes a reverse matching algorithm.Firstly,the engine model is determined based on the calculation of the vehicle parameters and design indicators.Then,the common output characteristic data of the engine and the torque converter are obtained by calculation based on four special working conditions named starting,high-speed running,highly efficient running and shift gear.Finally,the original characteristic data of the torque converter are calculated for fitting,and the original characteristic curve of the target torque converter as well as the reference of the torque converter model is obtained directly.To test the feasibility of the algorithm,it is used to calculate a certain type of emergency engineering vehicle.Firstly,engine and torque converter model are selected.Then the vehicle mathematical model and three-dimensional model for joint simulation are established using Matlab/Simulink and the Soil-Tire toolkit in Recurdyn.Finally,the output curve and speed output curve of the engine working together with the hydraulic torque converter are obtained to verify the theoretical results can meet the needs of vehicles.
作者
贺福强
刘泰隆
HE Fu-qiang;LIU Tai-long(School of Mechanical Engineering,Guizhou University,Guizhou Guiyang 550025,China)
出处
《机械设计与制造》
北大核心
2021年第2期178-182,共5页
Machinery Design & Manufacture
基金
应急救援排障工程车关键技术研究与产业化,黔科合重大专项字[2016]3014。
关键词
应急救援排障工程车
发动机
变矩器
动力匹配
逆向算法
联合仿真
Emergency Engineering Vehicle
Engine
Hydraulic Torque Converter
Power Matching
Inverse Algor-ithm
Co-Simulation
