重载车辆再生缓速系统运行特性及能效分析  

Operational Characteristics and Energy Efficiency Analysis of Regenerative Retarder Systems for Heavy Duty Vehicles

作　　者：薛梦乐 黄伟男[1] 熊晓燕[1] 权龙[1] XUE Meng-le;HUANG Wei-nan;XIONG Xiao-yan;QUAN Long(Key Laboratory of New Sensors and Intelligent Control,Ministry of Education and Shanxi Province,Taiyuan University of Technology,Taiyuan,Shanxi 030024)

机构地区：[1]太原理工大学新型传感器与智能控制教育部和山西省重点实验室,山西太原030024

出　　处：《液压与气动》2024年第5期16-23,共8页Chinese Hydraulics & Pneumatics

基　　金：国家自然科学基金青年基金(52105067,52305068)。

摘　　要：重载车辆行驶路况复杂,在其下长坡过程中,机械制动器因长时间工作而温度上升,容易造成刹车失灵。为此,针对30 t重载车辆提出一种液压再生缓速系统对其进行制动,系统由液压泵/马达为车辆提供制动扭矩,蓄能器回收制动动能并在加速工况辅助电机驱动车辆,散热模块进行系统散热。制定了车辆行驶过程中的加速与制动控制策略并建立了车辆系统仿真模型进行分析。结果表明:在不同的坡度下该系统均能够提供足够的制动扭矩,最大制动扭矩可达1150 N·m,具有很好的缓速制动特性,其系统油温也稳定在60℃左右;同时该系统能将回收的制动能量辅助电机驱动行走系统,制动能量回收率为42.4%。Heavy⁃duty vehicles have complex road conditions,and during their long downhill,the temperature of the mechanical brake rises due to long⁃term work,which is easy to cause brake failure.A hydraulic regenerative retardation system is proposed for 30T heavy⁃duty vehicles to slow brake,the system is provided with braking torque by hydraulic pump/motor,the accumulator recovers braking kinetic energy and assists the motor to drive the vehicle under acceleration conditions,and the heat dissipation module dissipates heat from the system.The acceleration and braking control strategies during vehicle driving are formulated,and a vehicle system simulation model is established for analysis.The results show that the system can provide sufficient braking torque under different slope conditions,the maximum braking torque can reach 1150 N·m,it has good braking characteristics,and the system oil temperature is also stable at about 60℃.The system can drive the recovered braking energy auxiliary motor to the traveling system,and the braking energy recovery rate is 42.4%.

关 键 词：重载车辆 液压缓速系统 制动特性 能量回收 

分 类 号：TH137[机械工程—机械制造及自动化]