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首页> 外文期刊>Proceedings of the Institution of Mechanical Engineers, Part J. Journal of engineering tribology >Cavitation development in the lubricant film of a reciprocating piston-ring assembly
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Cavitation development in the lubricant film of a reciprocating piston-ring assembly

机译：往复式活塞环组件的润滑膜中出现气穴现象

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摘要

The onset and development of cavitation in the lubrication film present throughout the stroke between the piston ring and the cylinder liner in a reciprocating test rig was visualized by a charge-coupled device (CCD) camera and monitored by a miniature pressure sensor. Various transient cavitation patterns were identified during the stroke, ranging from developing fern-shaped cavities to string cavities extending gradually up to the trailing edge of the piston ring. Both the onset and the development of these cavities seem to be affected by piston speed and load; at higher speeds cavities appear later in the stroke and are larger in size, while at higher loads they appear earlier, are more numerous and, thus, smaller in size.
机译：在往复式试验装置中，在活塞环和气缸套之间的整个行程中，在整个行程中存在的润滑膜中的气穴现象的发生和发展通过电荷耦合装置（CCD）摄像头可视化，并通过微型压力传感器进行监控。在冲程期间，发现了各种瞬态的气蚀模式，从形成的蕨形腔到逐渐延伸到活塞环后缘的弦腔。这些空洞的发生和发展似乎都受到活塞速度和负载的影响。在较高的速度下，空腔出现在冲程的后面，并且尺寸较大;而在较高的负载下，它们出现的较早，数量更多，因此尺寸较小。

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