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首页> 外文会议>American Society of Mechanical Engineers(ASME) Internal Combustion Engine Division Fall Technical Conference; 20050911-14; Ottawa(CA) >EFFECT OF TOP PISTON RING WEAR ON ITS SEALING AND SCRAPING PERFORMANCE
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EFFECT OF TOP PISTON RING WEAR ON ITS SEALING AND SCRAPING PERFORMANCE

机译：顶活塞环磨损对其密封和刮擦性能的影响

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摘要

New engines are presenting a constant increase of mechanical and thermal loads. The engine components should guarantee similar, or superior, performance than the baseline components in spite of the unfavorable wear conditions. For piston rings, the performance is given by the ring capacity of sealing and scraping. This performance can be measured in an engine by the lube oil consumption (LOC) and the gas flow to the crankcase (Blow-by) results. The purpose of this work is to evaluate the top piston ring wear influence on its sealing and scraping performance. Two engines were tested, one Otto and the other Diesel, in a dynamometer in order to quantify the top ring dimensional variation due to wear. Numerical simulations were performed in order to evaluate the individual influences of each dimensional parameter. The results of LOC and Blow-by were compared to literature data and engine test results of each engine. A proposal of combined effects among the dimensional parameters is presented.
机译：新型发动机呈现出不断增加的机械负荷和热负荷。尽管存在不利的磨损条件，但发动机部件仍应保证与基准部件具有相似或更高的性能。对于活塞环，性能由密封和刮擦的环容量给出。可以在发动机中通过润滑油消耗量（LOC）和流向曲轴箱的气体流量（窜缸气）来衡量这种性能。这项工作的目的是评估顶部活塞环的磨损对其密封和刮擦性能的影响。为了确定由于磨损造成的顶环尺寸变化，对两台发动机进行了测试，其中一台是奥托发动机，另一台是柴油机。为了评估每个尺寸参数的个别影响，进行了数值模拟。将LOC和漏气的结果与文献数据和每个发动机的发动机测试结果进行比较。提出了尺寸参数之间组合效应的建议。

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