摘要
针对回流式无级变速传动系统效率变化幅度大,传统无级变速系统匹配控制策略无法确保整个系统处于理想状态,提出了基于系统效率优化的匹配控制策略。建立了发动机、变速器效率数值模型和整车优化模型,利用Matlab/Simulink仿真平台,对优化模型进行求解,得到了发动机目标节气门开度控制表和变速器目标速比控制表,对设计样车的燃油经济性进行了欧洲市区与城郊行驶循环(ECE+EUDC)工况仿真验算,结果表明:基于系统效率优化的匹配控制策略可提高整车燃油经济性1.5%左右。
To solve the problem that the transmission efficiency of continuously variable transmission system with reflux power varies in a great range,and the traditional control strategy can＇t make sure that the overall system is under ideal conditions,an economy control method based on system efficiency optimization is put forward.The engine/transmission efficiency numerical model and system optimization model are built.Taking Matlab/Simulink as the platform,objective throttle position control table and objective ratio control table are obtained by solving the optimization model.Furthermore,ECE＋EUDC drive cycle simulation based on the fuel economy of sample car is carried out,and the simulation results indicate that the method of system efficiency optimization make fuel consumption reduce by more than 1.5%.
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2011年第7期28-33,56,共7页
Journal of Chongqing University
基金
国家自然科学基金资助项目(51075410)
重庆市科技攻关计划项目(2010AC6049)
关键词
汽车
回流式无级变速传动系统
传动效率
燃油经济性
vehicles
continuously variable transmission system with reflux power
transmission efficiency
fuel economy
作者简介
作者简介：尹燕莉（1980-），女，重庆大学博士研究生，主要从事汽车动力传动与控制研究。
孙冬野（联系人），男，重庆大学教授，博士生导师，（E-mail）dysun@cqu．edu．cn。
