当前,各工业国都对液压传动的节能问题十分重视,总的来看不外乎两大途径:一是提高液压系统的效率;一是采用高水基液为工作介质。本文以提高现有液压系统效率谈一些粗浅的看法。液压系统能源损失的主要原因液压传动要进行两次能量转换,即电动机(或发电机)将机械能转换成液压泵的压力能,泵再经液压缸(或马达)将液压能转换为机械能,所以效率较低。因此,能源的损失可用系统效率来判断。我们知道效率是输出功率与输入功率之比,也可视为机械效率与容积效率的乘积来表示,如下式 At present, all industrialized countries attach great importance to the issue of energy saving in hydraulic transmission. Generally speaking, there are no more than two major ways: First, to improve the efficiency of the hydraulic system; and first, to use high-water-based liquid as the working medium. In this paper, to improve the efficiency of the existing hydraulic system to talk about some superficial view. Hydraulic system, the main reason for energy loss Hydraulic transmission to be carried out twice the energy conversion, that is, motor (or generator) will be mechanical energy into hydraulic pump pressure, the pump and then through the hydraulic cylinder (or motor) to convert hydraulic energy into mechanical energy, so Less efficient. Therefore, the energy loss can be judged by the system efficiency. We know that efficiency is the ratio of output power to input power and can also be expressed as the product of mechanical efficiency and volumetric efficiency as shown in equation