Analysis and Improvement Research on Oil Leakage Mechanism of Large Bore Engine Oil Seal
DOI: https://doi.org/10.62517/jes.202602112
Author(s)
Shili Chen1,2, Zhenyu Zhang1,2, Qiang Zhao1,2, Xiaojun Liu1,2
Affiliation(s)
1Weichai Power Co., Ltd., Weifang, Shandong, China
2State Key Laboratory of Engine and Powertrain System, Weifang, Shandong, China
Abstract
This article conducts a systematic mechanism analysis on the continuous oil leakage of the rear oil seal of the 16M33 series diesel engine used for power generation after running for about 40 minutes under rated conditions during in plant testing. Based on the study of fault phenomena and key parameters, the root cause of oil leakage was deeply analyzed from multiple dimensions such as structural dynamics, tribology, and assembly technology. It was identified that the main causes were the excessive runout of the flywheel housing, uneven pressure of the oil seal spring, and mismatched surface roughness of the crankshaft. Based on this, a comprehensive improvement plan covering structural optimization, process innovation, and standard reconstruction was proposed. Through theoretical calculations and bench tests, the improvement measures proposed in this study have effectively achieved the goal of reducing the failure rate of such oil seals by 80%, and provide important references for the reliability design of rotary shaft seals in large bore engines.
Keywords
Diesel Engine; Oil Spill; Oil Seal; Reliability
References
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