Abstract
For the ring/liner conjunction, well-designed surface texturing has been regarded as a potential means to improve its tribological performance, as well as the application of coating. However, so far most researchers focused on the one of these aspects. In this study, the combined effect of coating and texturing on the performance of ring/liner conjunction is numerically investigated. A thermal mixed lubrication model is presented. The effects of the coating’s thermal and mechanical properties on the tribological performance are studied under the cold and warm engine operating conditions. Along with the increasing coating thickness, the effects of the coating’s thermal properties on friction loss are found to be significant, as well as the effects of the coating’s mechanical properties. It is also found that a soft coating with a lower thermal inertia has a greater ability to reduce the friction loss of the textured conjunction.
Highlights
In recent decades, benefits of surface texturing and coating technology are being explored by the researchers across the globe
One of the evidences for this is the successful commercial application of surface texturing on the cylinder liners of combustion engines [2]
In terms of the ring/liner conjunction, surface texturing has been regarded as a potential means to improve its tribological performance, as well as the application of coating
Summary
Benefits of surface texturing and coating technology are being explored by the researchers across the globe. Surface texturing is regarded as a viable means in the reduction of the friction and wear for different tribological systems [1]. Over the last few decades, the use of surface coatings has extended to the case of lubricated contacts [9−11]. In terms of the ring/liner conjunction, surface texturing has been regarded as a potential means to improve its tribological performance, as well as the application of coating. In order to study the combined effect of the coating and texturing on the performance of ring/liner conjunction, a thermal mixed lubrication model is presented. Model, the effects of the coating’s thermal and mechanical properties on lubrication performance of the textured conjunction would be studied under the cold and warm engine operating conditions. The effect of coating’s thickness would be discussed
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