用 P-Q 图分析差压式变量叶片泵和节流阀的调速回路

Analyzing the Speed Control Loop Made of the Pressure- Compensated Vane Pump and the Adjustable Restrictor Value with the Drawing P-Q

利用Ｐ－Ｑ图分析差压式变量泵和节流阀的调速性能；并着重对变负载和变速时回路的性能和回路的效率进行分析。

This paper deals with the analysis varible pressure-compensated vane pump and adjustable restrictor value, also with the analysis of the circuit efficiency and the feature at the time of change of flow and load .