混合动力汽车发动机转矩突变过程动态协调控制  

Dynamic Coordinated Control for Hybrid Electric Vehicles in the Process of Engine Torque Abrupt Change

作　　者：赵峰[1] 罗禹贡[1] 张娜[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11期1334-1338,1350,共6页Automotive Engineering

基　　金：国家863计划项目(2011AA11A208);面向中美清洁能源合作的电动汽车前沿技术研究(2010DFA72760);中国博士后科学基金(2012M520253)资助

摘　　要：针对混合动力汽车急加速时由于混合气瞬间加浓引起动态油耗增加的问题,本文中提出了基于转矩动态补偿的混合动力汽车发动机转矩突变过程动态协调控制方法。设计了基于转矩变化率限制的发动机转矩控制策略,避免了发动机转矩突变过程中动态油耗的增加,同时保证了加速过程中整车的动力性。实车试验结果表明,提出的动态协调控制方法不仅降低了加速过程中发动机的动态油耗,同时提高了整车动力性。In view of the problem of the increase of transient fuel consumption in hard acceleration of elec-tric hybrid vehicle （ HEV） caused by mixture enrichment, a dynamic coordinated control scheme for the process of engine torque abrupt change of HEV based on torque dynamic compensation in this paper. An engine torque control strategy is designed based on torque changing rate limitation to avoid the increase of transient fuel consumption dur-ing the sudden change of engine torque, while ensuring the power performance of vehicle in acceleration process. The results of real vehicle test indicate that the dynamic coordinated control scheme proposed not only reduce the transient fuel consumption of engine during acceleration but also enhance the power performance of vehicle.

关 键 词：混合动力汽车 转矩突变 动态油耗 协调控制 

分 类 号：U469.7[机械工程—车辆工程]