摘要
采用瞬时优化与定工况下全局优化相结合的方法,对ISG(Integrated Starter/Generator)型中度混合动力汽车的系统效率进行优化,以系统效率最高为优化目标,优化混合动力系统能量管理策略。为了避免混合动力汽车在模式切换或突然加速时,由于发动机油门突变导致的动态油耗增加,当发动机油门开度变化率过大时,采用发动机惯性矩闭环控制和电机补偿控制的方法对中度混合动力系统进行动态协调控制,限制发动机节气门开度变化率,抑制汽油过度喷射,以达到降低油耗的目的。建立了系统仿真模型并进行了仿真模拟,结果表明,通过对混合动力汽车油门的动态协调控制,在保证动力性的条件下,可明显降低混合动力轿车的整车综合油耗。
The system efficiency of ISG（integrated starter/generator）type medium hybrid electric vehicle（HEV）is optimized by combining transient and global optimization method under given driving mode,and energy management strategy of the hybrid system is optimized to reach the highest hybrid system efficiency.In order to avoid dynamic fuel increasing caused by engine throttle mutation during driving mode shifting or acceleration,closed-loop control of inertia moment of engine and compensation control of motor torque are adopted to coordinate the medium hybrid system to suppress over fuel injection of the ICE caused by engine throttle mutation.Model of medium hybrid electric vehicle is built and simulation is carried out.The results show that the throttle coordinated control can improve fuel economy,under the condition of guaranteed dynamic performance.
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2010年第11期1-7,共7页
Journal of Chongqing University
基金
国家863计划重大专项(2006AA11A107)
重庆市科技攻关重大专项(CSTC:2008AA6025)
中国博士后科学基金资助项目(20090450782)
关键词
混合动力汽车
汽车
燃油经济性
油门动态控制
hybrid electric vehicle
vehicle
fuel economy
throttle dynamic control
