这种系统利用该发动机来驱动液压泵以使蓄压器充满压力达到高压。
The system uses the engine to drive a hydraulic pump that charges an accumulator to high pressure.
提出了在纯水液压泵中气蚀初生伴随着低频压力脉动现象。
It is suggested that low frequency fluctuation occurs with cavitation inception in water hydraulic pump.
当压力脉动发生在液压泵的吸油管路或液压系统的回油管路等低压管路中时，会引起气泡和气穴的产生及破灭。
When the pressure transients occur in low pressure pipelines such as the suction lines of pumps or the return lines of a hydraulic system, gas bubbles and cavitation will occur inside the fluid.
本文对液压系统中的流量压力脉动源一液压泵的频域数学模型作了研究。
A hydraulic pump is considered as a pressure and flow ripple source for the hydraulic system, and its mathematical model in frequency domain is studied.
使用时，转向液压泵常处于转速、压力多变的复杂工况下，油温变化剧烈且范围较大。
Use, often in turn the hydraulic pump speed, stress the complexity of changing conditions, and drastic temperature changes in the scope of the larger.
该模型将变量液压泵等效为液阻、压力突变、恒流源构成的一般液压元件。
By the new model, a variable displacement hydraulic pump is simulated by the ordinary hydraulic component with hydraulic resistance, abrupt pressure change and invariable flow.
气泡和气穴的产生不仅会严重影响液压泵和液压系统的性能，而且会对压力脉动产生很大的影响。
The presence of cavitation and gas bubbles not only badly influences the performance of hydraulic pumps and systems but also affects the pressure transient behaviour in hydraulic pipelines.
若外负载突然降低，液压泵进油压力将比正常情况增加3—4倍。
If the load suddenly decreases, the pressure in the inlet of pump will increase to 3-4 times as high as normal.
当液压泵工作时，它以适当的压力把液体从油箱压到管道里。
When the pump operates, it forces liquid from the tank into the discharge pipe at a suitable pressure.
因此，只有同时研究液压泵的压力特性和温度特性，才能较全面地评价一个泵的性能。
Therefore, only when the characteristics of pressure and temperature both are considered together, can we evaluate the performance of a hyd…
从派克液压泵是应用程序可在高压或闭环或开环压力低的品种，适用范围广的。
Hydraulic pumps from Parker are available in high pressure or low pressure varieties for a wide range of open loop or closed loop applications.
从派克液压泵是应用程序可在高压或闭环或开环压力低的品种，适用范围广的。
Hydraulic pumps from Parker are available in high pressure or low pressure varieties for a wide range of open loop or closed loop applications.
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