TY - JOUR
T1 - Modelling and theoretical research on transient lubrication and wear coupling behavior of main bearing during start-up of low-speed diesel engine
AU - Chen, Rui
AU - Zhao, Bin
AU - Tu, Liyue
AU - Xie, Zhongliang
AU - Lu, Xiqun
AU - Zou, Dequan
N1 - Publisher Copyright:
© IMechE 2024.
PY - 2025/4
Y1 - 2025/4
N2 - This study endeavors to establish a transient mixed lubrication model for time-varying wear of main bearings under dynamic loading conditions during the startup process. This model accounts for variations in oil film thickness attributable to deformation, wear profiles, and journal misalignment throughout the operational cycle. The evolution of main bearing lubrication characteristics during the startup process was analyzed, as well as the evolution of wear profiles and their effects on lubricating properties under different numbers of startups. The results indicate that as the number of startup cycles increases, the wear rate gradually levels off. With increasing startup times, there is a decrease in contact pressure and a slight reduction in oil film pressure, resulting in enhanced lubricating performance. Furthermore, the influence of startup duration on wear is significantly greater than that of radial clearance.
AB - This study endeavors to establish a transient mixed lubrication model for time-varying wear of main bearings under dynamic loading conditions during the startup process. This model accounts for variations in oil film thickness attributable to deformation, wear profiles, and journal misalignment throughout the operational cycle. The evolution of main bearing lubrication characteristics during the startup process was analyzed, as well as the evolution of wear profiles and their effects on lubricating properties under different numbers of startups. The results indicate that as the number of startup cycles increases, the wear rate gradually levels off. With increasing startup times, there is a decrease in contact pressure and a slight reduction in oil film pressure, resulting in enhanced lubricating performance. Furthermore, the influence of startup duration on wear is significantly greater than that of radial clearance.
KW - Main bearing
KW - start-up
KW - transient mixed lubrication
KW - wear
UR - http://www.scopus.com/inward/record.url?scp=105001959864&partnerID=8YFLogxK
U2 - 10.1177/13506501241294140
DO - 10.1177/13506501241294140
M3 - 文章
AN - SCOPUS:105001959864
SN - 1350-6501
VL - 239
SP - 480
EP - 498
JO - Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology
JF - Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology
IS - 4
ER -