液压系统的传动效率是一项重要的质量指标,它直接影响液压设备的使用经济性及系统的发热。液压系统是否有足够高的传动效率,这往往是设计者与使用者极为关心的问题。特别当前国外在能源危机的影响下,对它更为重视。在我们所看到的几个国外液压系统标准中,均未对液压系统的传动效率提出要求,考虑进一步提高我国液压系统的设计水平,并使我国液压设备产品,在能源短 Transmission efficiency of hydraulic system is an important quality indicator, which directly affects the economy of the hydraulic equipment and the heat of the system. Whether the hydraulic system has a high enough transmission efficiency is often a matter of great concern to designers and users. In particular, foreign countries now pay more attention to it under the influence of the energy crisis. In the few foreign hydraulic system standards we have seen, none of the hydraulic system transmission efficiency requirements, consider further improve our hydraulic system design level, and make our country hydraulic equipment products, energy short