This paper brings forth the efforts made by investigators in the field of IC engines aimed to improve its fuel efficiency and reduce its emissions. It is observed that various techniques are in the process of research so as to reduce friction at the moving interfaces in IC engines for addressing the concerns. Recently, certain surface textures (patterning nano/micro/macro geometries on the surfaces) have been identified as a viable technology for reducing friction at the interfaces of various tribo-contacts. Surface textures are also being employed at piston rings/cylinder liner interfaces to investigate the reduction in friction and wear, and accordingly, develop the possibilities of fuel-saving and emission reductions in IC engines. Several numerical and experimental studies indenting to improve IC engines’ performance using surface textures are available in the open literature. Therefore, this paper aims to compile the available information on the tribo-performances of the piston ring/cylinder liner contacts as well as fuel-saving and emission reductions of the IC engines employing the surface textures at one place for ready reference to readers.

本文介绍了内燃机领域的研究人员为提高燃油效率和减少排放所做的努力。据观察，正在研究各种技术以减少 IC 发动机中移动界面处的摩擦，以解决这些问题。最近，某些表面纹理（在表面上形成纳米/微米/宏观几何图形）已被确定为减少各种摩擦接触界面摩擦的可行技术。活塞环/气缸套接口处的表面纹理也被用于研究摩擦和磨损的减少，并因此开发内燃机节油和减排的可能性。在公开文献中可以找到一些数值和实验研究，这些研究旨在使用表面纹理来提高 IC 发动机的性能。因此，本文旨在汇集有关活塞环/缸套接触的摩擦性能以及采用表面纹理的内燃机的节油和减排的现有信息，以供读者参考。