Cavitation development in the lubricant film of a reciprocating piston-ring assembly
Cavitation development in the lubricant film of a reciprocating piston-ring assembly
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往复式活塞环组件润滑油膜中的气蚀发展
DOI：
10.1243/1350650041323340
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
C. Arcoumanis
中科院分区：
文献类型：
--
作者：
P. Dellis;C. Arcoumanis
摘要利用电荷耦合器件（CCD）摄像机和微型压力传感器对往复式试验台活塞环-缸套间整个行程内润滑油膜中气穴现象的发生和发展进行了可视化研究。各种瞬态空化模式被确定在行程中，从发展蕨状空腔串腔逐渐延伸到活塞环的后缘。这些空穴的发生和发展似乎都受到活塞速度和载荷的影响;在较高的速度下，空穴在行程中出现得较晚，尺寸较大，而在较高的载荷下，它们出现得较早，数量较多，因此尺寸较小。
Abstract 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.