A new hydraulic load simulation system, adopting a rotation directional valve and using a spring accumulator simulating the starter load, is proposed and working principles are described.

提出了一种采用旋转式换向阀及弹簧蓄能器模拟发动机负载的液压负载模拟系统，详细介绍了该系统的工作原理；

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This paper introduced the operating principle, design and check of heat accumulator used in the boiler having a great fluctuation in load.

该文介绍了适合负荷波动较大时应用的锅炉蓄热器工作原理、设计和校核方法。

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Furthermore, the complete tensioner systems dynamic as well as the effect of some subsystems and parameters, such as accumulator, relief valve, bulk modulus and load etc., are discussed in detail.

在此基础上，完成了张紧器系统动态仿真，并系统深入的研究了蓄能器、溢流阀等主要元部件、参数、负载状况对张紧器动态工作特性的影响规律。

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