Ringing in the changes

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Ringing in the changes

机译：响起变化

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Most chief engineers and others working with large bore two-stroke engines are well aware that a piston ring normally suffers greater wear close to the gap during the running-in process. The reason for this is an increased temperature of the piston ring during operation while the temperature also rises in the liner and obviously varies over the length of the stroke. The increased temperature causes thermal expansion of the piston ring and of the liner and, consequently, the ring does not fit perfectly into the liner in the vicinity of the gap. All reciprocating combustion engines suffer from this phenomenon, although for smaller engines this is normally negligible, while for medium size engines (200-600 mm) it becomes important and for large engines it is critical.

机译：大多数首席工程师和其他使用大口径二冲程发动机的人都清楚地意识到，在磨合过程中，活塞环通常会在间隙附近遭受更大的磨损。其原因是在工作期间活塞环的温度升高，而衬套中的温度也升高，并且显然会在冲程长度上变化。温度升高会引起活塞环和衬套的热膨胀，因此，活塞环无法在间隙附近完美配合到衬套中。所有的往复式内燃机都遭受这种现象的困扰，尽管对于小型发动机而言，这通常可以忽略不计，而对于中型发动机（200-600 mm）而言，这一点就变得很重要，而对于大型发动机而言，则至关重要。

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《The Motor Ship》 |2003年第998期|p.43-44|共2页
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收录信息美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类水路运输;
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Ringing in the changes

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