Measurement of fluid film thickness on the valve plate in oil hydraulic axial piston pumps (I)-bearing pad effects-
Measurement of fluid film thickness on the valve plate in oil hydraulic axial piston pumps (I)-bearing pad effects-
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DOI：
10.1007/bf02984396
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发表时间：
2003-02
期刊：
影响因子：
--
通讯作者：
Jong Ki Kim;Jae-Youn Jung
中科院分区：
文献类型：
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作者：
Jong Ki Kim;Jae-Youn Jung
油压轴向柱塞泵配流盘与缸体之间的摩擦学机理对泵的高功率密度起着重要作用。在这项研究中，阀板和气缸体之间的流体膜厚度测量与排放压力和转速通过使用间隙传感器，和滑环系统在运行期间。为了研究阀板形状的影响，我们设计了两种不同形状的阀板：第一种阀板没有轴承垫，而第二种阀板有轴承垫。结果发现，两个阀板表现不同的流体膜厚度特性。为了阐明无轴承垫和有轴承垫的阀板之间的性能差异，还对泄漏流量和轴扭矩进行了实验。从这项研究的结果中，我们发现，在油压轴向柱塞泵，阀板与轴承垫比没有轴承垫的阀板表现出更好的膜厚度轮廓。
The tribological mechanism between the valve plate and the cylinder block in oil hydraulic axial piston pumps plays an important role on high power density. In this study, the fluid film thickness between the valve plate and the cylinder block was measured with discharge pressure and rotational speed by use of a gap sensor, and a slip ring system in the operating period. To investigate the effect of the valve plate shapes, we designed two valve plates with different shapes : the first valve plate was without a bearing pad, while the second valve plate had a bearing pad. It was found that both valve plates behaved differently with respect to the fluid film thickness characteristics. The leakage flow rates and the shaft torque were also experimented in order to clarify the performance difference between the valve plate without a bearing pad and the valve plate with a bearing pad. From the results of this study, we found out that in the oil hydraulic axial piston pumps, the valve plate with a bearing pad showed better film thickness contours than the valve plate without a bearing pad.