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一、前言随着液压元件向高压大流量方向的不断发展,如何提高液压回路的效率、节省功率消耗和降低油液温度等已成为液压回路设计中迫切需要解决的一个重要问题。闭式液压回路通常具有较高的效率,但由于不能采用多个执行元件以及构造复杂等原因,在应用上受到一定限制。开式液压回路构造简单而且可以应用多个执行元件,但效率较低。例如,目前常用的节流调速液压回路的效率一般为η=0.2～0.4,甚至还可能低于0.1。因此,不能满足高压大流量液压回路的要求,在应用上也受到一定限
I. INTRODUCTION With the continuous development of hydraulic components toward high pressure and high flow rate, how to improve the efficiency of hydraulic circuit, save power consumption and reduce the temperature of oil has become an urgent problem to be solved urgently in the design of hydraulic circuit. Closed-loop hydraulic circuit usually has a high efficiency, but due to the use of multiple actuators and the complexity of the structure and other reasons, the application is subject to certain restrictions. Open hydraulic circuit is simple to construct and can use multiple actuators, but less efficient. For example, the commonly used throttling speed hydraulic circuit efficiency is generally η = 0.2 ~ 0.4, and may even be less than 0.1. Therefore, it can not meet the requirements of high-pressure and high-flow hydraulic circuit and is limited in application