新型电控液驱车辆能量再生系统建模与实验  

Modeling and Experimental Research on Energy Regeneration System for New Vehicle with Electronic Control of Hydrostatic Transmission

作　　者：李翔晟[1] 常思勤[1] 

机构地区：[1]南京理工大学机械工程学院

出　　处：《农业机械学报》2006年第10期31-34,共4页Transactions of the Chinese Society for Agricultural Machinery

摘　　要：建立了电控液驱车辆能量再生系统各元件蓄能器、变量泵/马达、飞轮以及液压回路的分析模型和系统模型.以蓄能器压力和温度、泵/马达的转矩和效率、压力损失和飞轮的转速为时间参变量,采用四阶Runge-Kutta算法求解微分方程.用以此计算的系统变量确定能量损耗和循环效率.实验结果表明：能量损耗主要产生于液压泵/马达,约占总能量损失的32.64%;系统循环效率在62%～89%;损失能量回收率76%,能量损耗与蓄能器的有效容积、飞轮的初速度和转动惯量有关.The models of the energy regeneration system that consist of an accumulator, a variable displacement pump/motor, connecting lines and flywheel have been set up. In order to solve the differential equations, the fourth order Runge-Kutta integration method was selected. The results showed that of the 32. 64 % of the total energy loss was attributable to the hydraulic pump/motor. The variation in constant-volume specific heat of gas was less than 2%, constant thermal time was 60 s, accumulator was found to operate essentially and adiabatically with little thermal loss. During a series of experiments, energy was repeatedly transferred between the hydraulic accumulator and the flywheel through the pump/motor. Computed system varied favorably in comparison with the experimental results. At moderate and high motor/pump displacement, the round trip efficiency varied from 62%- 89%. It was lower at small displacement. Efficient saving rate of the loss energy was 76%, and related to the effective volume of accumulator, initial speed and inertia of flywheel.

关 键 词：车辆 静液压传动 能量回收 循环效率 

分 类 号：U463.22[机械工程—车辆工程]