摘要
电控单体泵的循环喷油量波动影响喷油系统工作的稳定性和一致性。利用AMESim软件建立单体泵数值模型,应用实验设计思想,制定了相关性分析的仿真方法。通过仿真和相关性分析,揭示了全工况平面内关键影响参数分别在有无交互作用下与循环喷油量的相关性变化规律,表现出复杂的非线性。得出无参数交互作用下全工况平面内与循环喷油量有显著相关性的特性参数为低压供油压力、凸轮型线速率、控制阀杆升程、喷油器开启压力、喷油器针阀升程和喷油器流量系数;交互作用下参数自身交互作用的二次因子与循环喷油量的相关性最显著。
Cycle fuel injection quantity fluctuation of electronic unit pump（EUP） determines the coherence and stability of the EUP fuel injection system.The simulation model of EUP was established in the AMESim environment,and the method of simulation experiment was designed by using the design of experiments（DOE） method.The result obtained by the simulation revealed the variation law of correlation under parameters interaction or not respectively in the overall operating conditions.The result shows that the EUP system is a complex nonlinear system.In the overall operating conditions the characteristic parameters such as fuel supply pressure,cam profile velocity,control valve lift,injector opening pressure,and injector needle lift as well as the injector flow coefficient have remarkable correlation with the cycle fuel injection quantity when there is no interaction between parameters.The second order factors under self interaction of parameters are the most remarkable second order factors when the interaction between parameters is considered.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2012年第5期1-10,共10页
Transactions of the Chinese Society for Agricultural Machinery
基金
国家自然科学基金资助项目(50909024)
清华大学汽车安全与节能国家重点实验室开放基金资助项目(KF10102)
广东省教育部产学研结合项目(2009A090100050)
中央高校基本科研业务费专项资金资助项目
关键词
电控单体泵
全工况
循环喷油量
相关性分析
EUP
Overall operating conditions
Cycle fuel injection quantity
Correlation analysis
