为使增程式电动汽车(Extend Range Electric Vehicle,EREV)在城市低速工况下尽可能地以纯电动模式行驶,以进一步改善其燃油经济性能,设计了一种基于能量预测的增程式电动汽车能量管理策略。应用Matlab/Simulink对提出的控制策略进行建模...为使增程式电动汽车(Extend Range Electric Vehicle,EREV)在城市低速工况下尽可能地以纯电动模式行驶,以进一步改善其燃油经济性能,设计了一种基于能量预测的增程式电动汽车能量管理策略。应用Matlab/Simulink对提出的控制策略进行建模,并对Cruise环境下搭建的整车模型进行了联合仿真分析。结果表明:所建立的控制策略相比整车采用功率跟随控制策略可以进一步降低汽车百公里燃油消耗量。展开更多
The burst feeding behavior of ZL205 A casting under mechanical vibration and low pressure was investigated by casting experiment and physical model. Experimental results indicated that the burst feeding appeared repea...The burst feeding behavior of ZL205 A casting under mechanical vibration and low pressure was investigated by casting experiment and physical model. Experimental results indicated that the burst feeding appeared repeatedly during solidification and left a shrinkage cavity with layered structure under mechanical vibration. The castings with less shrinkage and higher density could be achieved through the vibration. The calculation results of physical model showed that the burst feeding could perform spontaneously under vibration while difficultly without vibration in low-pressure die casting. The obstruction of a casting could be broken and the grains could be rearranged by the vibration. And the obstruction could be carried away due to the inner and outer pressure difference, causing a burst feeding.展开更多
文摘为使增程式电动汽车(Extend Range Electric Vehicle,EREV)在城市低速工况下尽可能地以纯电动模式行驶,以进一步改善其燃油经济性能,设计了一种基于能量预测的增程式电动汽车能量管理策略。应用Matlab/Simulink对提出的控制策略进行建模,并对Cruise环境下搭建的整车模型进行了联合仿真分析。结果表明:所建立的控制策略相比整车采用功率跟随控制策略可以进一步降低汽车百公里燃油消耗量。
基金Projects(51475120,U1537201) supported by the National Natural Science Foundation of China
文摘The burst feeding behavior of ZL205 A casting under mechanical vibration and low pressure was investigated by casting experiment and physical model. Experimental results indicated that the burst feeding appeared repeatedly during solidification and left a shrinkage cavity with layered structure under mechanical vibration. The castings with less shrinkage and higher density could be achieved through the vibration. The calculation results of physical model showed that the burst feeding could perform spontaneously under vibration while difficultly without vibration in low-pressure die casting. The obstruction of a casting could be broken and the grains could be rearranged by the vibration. And the obstruction could be carried away due to the inner and outer pressure difference, causing a burst feeding.
