中文摘要：

为了提高轴向变量柱塞泵／马达小排量时的综合效率，基于柱塞式液压泵阀配流原理，引入变有效排量（VVD）论，提出采用液控单向阀控制柱塞单元有效输出／输入实现轴向柱塞泵／马达配流及变量的配流机构，介绍变量阀配流机构的基本原理．基于AMEsim建立物理模型进行仿真研究，将变量阀配流机构应用于弯轴式轴向柱塞马达进行初步的原理样机实验研究．仿真和原理样机试验结果表明，采用该配流机构能够实现设计的配流、变量功能，具有提高高压泵／马达容积效率以及简化液压系统的潜在优点．

英文摘要：

A variable displacement distributor for axial piston pump/motor with pilot operated check valve controlling the effective output of each piston unit was presented based on valve control and virtual variable displacement theory in order to improve the total efficiency of variable displacement axial piston pump/mo- tor. The operate principle of the valve controlled variable displacement mechanism was introduced. A com- puter simulation model was established based on AMEsim, and the valve controlled variable displacement mechanism was applied to a bent axis piston motor to construct a prototype. Both the simulation results and the test results indicate that the variable displacement distributor can continuously adjust the displace- ment of pump/motor. The distributor has potential advantage of high volume efficiency and can simplify hydraulic system.