Improving frictional performance of ring-liner system under cylinder deactivation conditions by surface texturing

In this study, a method of surface texture is considered to improve the frictional performance of the ring-liner system (i.e. RLS) under the conditions of cylinder deactivation (i.e. CDA). To assess the effectiveness of the method, a lubrication model is developed with considerations of the liner de...

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Bibliographic Details
Published in:International journal of engine research 2022-08, Vol.23 (8), p.1295-1307
Main Authors: Zhang, Yongfang, Liu, Cheng, Lu, Yanjun, Kang, Jianxiong, Luo, Hongbo, Müller, Norbert
Format: Article
Language:English
Subjects:
Cylinder liners
Deactivation
Engine cylinders
Friction reduction
Gasoline engines
Lubricants
Rheological properties
Surface layers
Texture
Texturing
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Summary:In this study, a method of surface texture is considered to improve the frictional performance of the ring-liner system (i.e. RLS) under the conditions of cylinder deactivation (i.e. CDA). To assess the effectiveness of the method, a lubrication model is developed with considerations of the liner deformation, the actual rheological properties of lubricant, and the lubricant transport. By solving the model numerically, the friction reduction effect of surface texture for the RLS under the CDA is investigated. The results show that the surface texture can improve the friction properties significantly. For a six-cylinder gasoline engine, 7.57% and 7.28% decreases in the total average friction loss and power loss are observed when the RLS under the CDA is surface textured.
ISSN:1468-0874
2041-3149
DOI:10.1177/14680874211014669