摘要
建立了一种通用气动式制动能量回收系统的数学模型。针对不同汽车制动的初始平均速度及高压储气罐预冲压力、容积等关键参数,在MATLAB中进行了仿真计算,通过分析系统工作过程中汽车的车速变化及系统高压储气罐的气压变化,研究系统的可行性及其能量回收效率。结果表明:系统的制动能回收效率与高压储气罐的预充压力成正比,与高压储气罐的容积成反比,合理地确定高压储气罐预充压力和容积,系统回收效率可达20%;当汽车速度较低时,车辆仅依靠气动式制动系统,可满足汽车对制动距离的标准规定。
A general mathematical model of pneumatic braking energy recovery system is built. The simulation calculation is carried out in MATLAB according to the change of vehicle speed, the pressure and the volume of high pressure gas storage tank and other key parameters. The feasibility and energy recovery efficiency of the system are studied by analysis on the change of vehicle speed and the pressure of high pressure gas storage tank in the system. It is shown that braking energy recovery efficiency of the system is proportional to the pre-filled pressure of high pressure gas storage tank and inversely proportional to the volume of the high pressure gas storage tank. The system recovery efficiency can reach 20% by reasonably determining the pressure and volume of the high pressure storage tank. When the vehicle speed is low, it can meet the standard of automobile braking distance relying on the vehicle pneumatic braking system.
出处
《液压与气动》
北大核心
2016年第7期109-113,共5页
Chinese Hydraulics & Pneumatics
关键词
制动能回收
气动
储气罐
模型
储能效率
braking energy recovery, pneumatic, gas storage tank, model, energy storage efficiency
