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A fluid performance

机译：流体的性能

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摘要

Researchers have developed a procedure to measure a fluid's effect on the degree to which mechanical power is efficiently converted to hydraulic power in pumps typical of off-highway applications. Fluid performance has a direct effect on the efficiency of a hydraulic system. A pump instrumented with an appropriately sized inline torque meter allows accurate speed and torque measurement for calculation of mechanical power. A high-accuracy Coriolis mass flow meter and pressure transducers enable the determination of hydraulic power generated by the pump. Comparison of these values represents a measure of pump efficiency. Accurate control of test parameters is critical when measuring efficiency. Pump speed control is accomplished with an electric motor and variable speed drive. Load pressure is controlled via a relief valve at the pump outlet. Fluid temperature can either be controlled using a shell-and-tube heat exchanger, or allowed to find its own level when comparing heat rise across multiple fluids.
机译：研究人员已经开发出一种程序来衡量流体的影响程度有效地转化为机械动力液压动力泵典型越野的应用程序。影响液压系统的效率。泵和一个适当大小的仪器内联的速度和扭矩计允许准确转矩测量机械的计算权力。和压力传感器启用的决心产生的液压动力泵。比较这些值代表一个措施泵的效率。参数在测量效率是至关重要的。泵转速控制是一个来完成电动马达和变速传动。通过安全阀的压力控制泵出口。控制使用壳管式热交换器,或者可以找到自己的水平相比跨多个流体热量增加。

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