一种简单的负流量控制方法

工程机械中负流量控制节能方法已经得到成功的应用，但其进口主控制换向阀订货周期长，价格高，所以提出了一种以泵一液控换向阀压力开关先导阀梭阀～国产多路换向阀为系统环节来实现负流量控制的简单方法，既可降低成本，缩短制造周期，又基本达到了节能控制的功能。简单负流量控制方法在整机无动作时，能让主泵排量减到最小，从而配合发动机怠速模式，起到降低油耗的作用。

A Simple Negative Flow Control Method

The energy saving way of negative flow control for construction machinery has gotten successful application, but because of its main import control valve has long order cycle and high price, a kind of new way to pump liquid control reversing valve, pressure switch, pilot valve shuttle valve-homebred multi-way directional valve for the system was put forward to achieve a simple link negative flow control method, which can not only reduce the cost, shorten the manufacturing cycle, but also basically achieve the energy-saving control function. Negative flow control method in machine without action can make the main pump dis- placement reduced to the minimum, thereby matching engine idle mode, and reducing fuel consumption.