Engineers and engine manufactures have known for years that piston rings account as the main source of the friction in internal combustion engines, as much as seventy-five percent in many cases. Excessive engine wear is also, very often caused by poor vehicle operation, and subsequent momentary poor lubrication.

The paper presents a numerical methodology and results regarding the wear and deposition effects on an internal combustion engine piston rings as a result of engine lubrication. The deposits can lead to increment of oil consumption and emissions, reducing engine performance and fuel economy.

A 2D CFD approach was implemented in order to investigate the characteristics of the top compression ring deposit formation in a diesel engine. The developed pressures, the friction force and the minimum film thickness have been investigated. The variation of the minimum film thickness for new and worn rings at piston reversals, the insufficient minimum film thickness, the thicker films of the increment of the engine speed appeared at worn ring profile in the middle of each stroke, corresponds to a worst sealing behavior due to deposit, are some of major findings of this work.

The deposits investigation and hence the paper importance is crucial in combustion engines operation as well as it can covers both axial turbines and their cooling at preliminary design phase.

多年以来，工程师和发动机制造商都知道，活塞环是内燃机摩擦的主要来源，在许多情况下高达百分之七十五。发动机过度磨损通常也是由于车辆运行不良以及随后的瞬间润滑不良引起的。

本文介绍了一种数值方法，并研究了由于发动机润滑而对内燃机活塞环产生磨损和沉积影响的结果。沉积物会导致机油消耗和排放增加，从而降低发动机性能和燃油经济性。

为了研究柴油发动机顶部压缩环沉积物形成的特征，实施了2D CFD方法。研究了产生的压力，摩擦力和最小膜厚。活塞换向时新的和磨损的环的最小膜厚度的变化，最小的膜厚度不足，发动机转速的增量的较厚的膜在每个冲程的中间出现在磨损的环轮廓处，对应于最差的密封性能由于存款，是这项工作的一些主要发现。

沉积物的调查以及因此纸张的重要性在内燃机的运行中至关重要，因为它可以涵盖轴向涡轮机及其在初步设计阶段的冷却。