混合动力汽车发动机辅助制动控制方法  

Control Method of Engine Auxiliary Braking for Hybrid Electric Vehicles

作　　者：韩云武[1] 罗禹贡[1] 赵峰[1] 李克强[1] 

机构地区：[1]清华大学,汽车安全与节能国家重点实验室,北京100084

出　　处：《汽车工程》2014年第12期1433-1438,共6页Automotive Engineering

基　　金：国家863计划项目(2011AA11A208)资助

摘　　要：本文中提出一种基于行驶安全性和乘坐舒适性的并联式混合动力汽车发动机辅助制动控制方法。首先通过对下坡路段车辆行驶特性的分析,选择了发动机辅助制动的接入时机;分析了发动机接入过程中起动电机与离合器的动态协调过程;接着为保持发动机接入过程中的车速稳定,提出了发动机辅助制动接入过程中驱动电机的协调控制;最后通过实车实验对所提出的策略进行了验证,结果表明,该策略不仅可以提高并联式混合动力汽车在下坡路段的行驶安全和传动系部件的使用寿命,而且可以明显改善乘员的乘坐舒适性。A control method of the engine auxiliary braking of parallel hybrid electric vehicles for driving safety and ride comfort is proposed in this paper. Firstly,through an analysis on vehicle driving characteristics on downhill section,the proper timing of bring in engine auxiliary braking is chosen,and the dynamic coordination processes of starting motor and clutch during the bring-in process of engine auxiliary braking are analyzed. Then in order to keep vehicle speed stable during the process,a coordinated control strategy for driving motor in the process is put forward. Finally the strategy is verified by real vehicle tests. The results show that the proposed method can not only enhance the driving safety of vehicle in downhill section and the service life of drive-train components,but also evidently improve the ride comfort of occupants.

关 键 词：混合动力汽车 发动机辅助制动 动态过程 协调控制 

分 类 号：U469.7[机械工程—车辆工程]