摘要
针对重型车辆起步响应性差的问题,根据车辆动力传动系统结构,基于GT-SUITE软件建立废气涡轮增压柴油发动机以及控制系统的仿真模型,并基于台架试验对仿真模型进行了校核,保证动力传动系统模型具有较高的仿真精度。通过仿真探究冒烟极限限制、液力变矩器耦合工作点对起步加速性能的影响规律,明确发动机和液力变矩器耦合特性对提升车辆起步性能的作用机理,以提升车辆0~32 km/h加速性能为目标,制定车辆起步协调控制策略,并基于搭建的动力传动系统仿真模型对提出的协调控制策略进行仿真验证。研究结果表明:采用提出的协调控制策略车辆从0 km/h加速到32 km/h的弹射起步时间为9.8 s,而常规起步车辆从0 km/h加速到32 km/h的时间为14 s,新提出的协调控制策略对提升重型车辆的起步加速性能具有显著的效果。
For the problem of poor starting response of heavy vehicles,a simulation model of the exhaust turbocharged diesel engine and control system is established using GT-SUITE software based on the structure of the vehicle powertrain system.The simulation model is verified through bench test,ensuring that the powertrain system model has high simulation accuracy.Through simulation,the influences of smoke limit and coupling working point of hydraulic torque converter on starting acceleration performance are explored,and the mechanism of the coupling characteristics of engine and hydraulic torque converter on the improvement of vehicle starting performance is clarified.A vehicle starting coordinated control strategy is developed to improve 0-32 km/h acceleration performance of vehicle.The proposed coordinated control strategy is simulated and verified based on the established power transmission system simulation model.The results show that the starting time of vehicle to accelerate from 0 km/h to 32 km/h is 9.8 s when the proposed coordinated control strategy is used,while the time for conventional starting vehicle to accelerate from 0 km/h to 32 km/h is 14 s.The proposed coordinated control strategy has a significant effect on improving the starting acceleration performance of heavy vehicle.
作者
商显赫
张付军
吕航
刘涛
韩雪峰
王密琪
SHANG Xianhe;ZHANG Fujun;LÜHang;LIU Tao;HAN Xuefeng;WANG Miqi(School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China;Equipment and Project Management Center,Army Equipment Department of PLA,Beijing 100000,China;General Technology Department,China North Vehicle Research Institute,Beijing 100072,China)
出处
《兵工学报》
EI
CAS
CSCD
北大核心
2024年第1期264-275,共12页
Acta Armamentarii
基金
国家级基础科研项目(202020329201)。
关键词
重型车辆
起步性能
涡轮滞后
协调控制
heavy vehicle
starting performance
turbine lag
coordinated control
