前驱液压混合动力汽车制动性能分析  

Analysis of the Braking Performance of a Front-wheel Drive Hydraulic Hybrid Vehicle

作　　者：纪常伟[1] 朱永明[1] 梁晨[1] 刘晓龙[1] 

机构地区：[1]北京工业大学环境与能源工程学院,北京100124

出　　处：《北京工业大学学报》2013年第2期292-296,共5页Journal of Beijing University of Technology

基　　金：北京市科委先进制造与自动化项目(Z09010400750904)

摘　　要：首先阐述前驱液压混合动力汽车的工作原理,并应用SimulationX软件对其制动过程进行了仿真,然后引入能量回收强度的概念,对汽车的制动性能进行了理论分析.结果表明:该液压混合动力汽车能短时间内有效地回收车辆的制动能量,且制动过程平稳;相对于传统车辆,液压混合动力汽车具有较大的同步附着系数,提高了车辆制动时的方向稳定性,在较大附着系数路面上制动时,路面的附着条件发挥得更充分,但在附着系数小于γ0的极端路面上,不适合采用液压系统回收车辆的制动能量.This paper describes the principle of a front-wheel drive hydraulic hybrid vehicle, which can improve the power performance and cut down the fuel consumption and exhaust emissions. Simulation analysis employing the SimulationX software was carried out based on a specified passenger car during the course of braking. In terms of the definition of the severity of energy recovering, the braking performance was theoretically analyzed. Results indicate that the vehicle regenerative braking process is smooth and braking energy is quickly recovered by the hydraulic pump/motor and hydraulic accumulators. The hydraulic hybrid vehicle has a much higher synchronized adhesion coefficient than the ordinary vehicle, which can enhance the directional stability in the braking process. Meanwhile, it is more satisfying to hydraulically brake the vehicle on rough roads and it is not suitable for hydraulically recovering the braking energy on the extreme road whose adhesion coefficient is less than the synchronized adhesion coefficient.

关 键 词：液压混合动力 再生制动 制动性能 液压泵 马达 

分 类 号：U463.51[机械工程—车辆工程]