Analysis of lubrication and sealing performance on textured piston pair with multi-factor coupling
Industrial Lubrication and Tribology
ISSN: 0036-8792
Article publication date: 19 July 2021
Issue publication date: 22 April 2022
Abstract
Purpose
This paper aims to study the lubrication and sealing performance on the textured piston pair under the cross action of the shape and structure parameters. This paper further carries out the optimization design of low energy consumption hydraulic impact piston pair.
Design/methodology/approach
Based on the characteristics of the ring gap seal piston pair, the flow field analysis model of the whole film gap is established for its periodic treatment. The friction power loss of the piston pair is defined as the evaluation index of the lubrication performance and the leakage power loss as the evaluation index of the sealing performance. The orthogonal test design and CFD software were used to analyze the lubrication and sealing performance of the textured piston pair.
Findings
The cross action of shape and structure factors has a great influence of the lubrication and sealing performance on the textured piston pair. Clearance and shape parameters have great influence on it, while seal length and depth diameter ratio have little influence. The sealing performance of conical textured piston pair is good, while the lubrication performance of square textured piston pair is good. The primary and secondary order of influence of shape and structure on energy consumption on piston pair is B (seal clearance) > C (texture shape) > D (area ratio) > A (seal length) > E (depth diameter ratio).
Originality/value
Breaking the defect of local optimization design on traditional piston pair structure, then find the matching relationship of structural parameters on textured piston pair. Further improve the lubrication and sealing performance of the piston pair, and provide reference for the global optimization design of the low energy consumption hydraulic impact piston pair.
Keywords
Acknowledgements
The authors thank the reviewers for their valuable comments and the support by grants from National Natural Science Foundation of China (Nos. 51705147, 51809091 and 51779092), National Defense Basic Scientific Research program of China, Hunan Provincial Natural Science Foundation of China (No. 2018JJ3182) and Scientific Research Fund of Hunan Provincial Education Department (No. 19B191).
Statement of Originality: The authors would like to declare on behalf of their co-authors that the work described is original research and has not been published nor under consideration for publication elsewhere. The authors make sure there are no conflicts of interest. All authors have checked the manuscript and are agreed to the submission.
Citation
Quan, S., Guo, Y., Liu, X., Chen, Z. and Liu, Y. (2022), "Analysis of lubrication and sealing performance on textured piston pair with multi-factor coupling", Industrial Lubrication and Tribology, Vol. 74 No. 4, pp. 442-451. https://doi.org/10.1108/ILT-07-2020-0251
Publisher
:Emerald Publishing Limited
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