Frictions in cylinder liner-piston ring often cause an inevitable loss of energy loss in the diesel engine. This study aims at evaluating the effect of depths in the cylinder liner groove texture on friction, wear and sealing performances.
Five depths of groove texture cylinder liners (50, 100, 150, 200, 250 µm) were fabricated, and experiments were carried out using a special-purpose diesel engine tester. Comparative analyses of cylinder liner contact resistances, piston ring wear losses and surface appearances were conducted with respect to different surface textures and applied loads.
Under no-load conditions, the cylinder liner with a 100 deep thread groove can significantly improve sealing and optimize its lubrication performance. On the other hand, the sealing is highly correlated with the depth of groove and the load within the cylinder liner. Under loaded conditions, the thread groove has less effect on the sealing performance.
The findings can provide feasible basis for the tribological design and production of diesel engines.
The authors would like to express their sincere gratitude to the Hubei Provincial Natural Science Foundation of China (Grant No. 2018CFB483) and the National Innovation and Entrepreneurship Training Program for College Students (Grant No. S201910497033).
Yang, C.Z., Guo, Z. and Xu, C. (2020), "Effect of grooved cylinder liner depths on the tribological performances of cylinder liner-piston ring", Industrial Lubrication and Tribology, Vol. 72 No. 3, pp. 465-471. https://doi.org/10.1108/ILT-07-2019-0244
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