DocumentCode
532946
Title
Notice of Retraction
Lubrication study on a connecting rod big end bearing of two-stroke marine diesel engine
Author
Qili Wu ; Shulin Duan ; Zhanhua Wu ; Hui Xing
Author_Institution
Marine Eng. Coll., Dalian Maritime Univ., Dalian, China
Volume
15
fYear
2010
fDate
22-24 Oct. 2010
Abstract
Notice of Retraction
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
Based on elastohydrodynamic lubrication model of dynamically loaded bearing, and rough contact theory, AVL Excite Power Unit software was employed to investigate the EHD lubrication analysis for bid end connecting rod bearing of a low-speed two-stroke marine diesel engine. Relevant parameters of lubrication characteristics were analyzed, and the results show that the maximum bearing load appears at 10°CA and the force will go to other directions at the 300°CA. The trend of maximum film pressure is consistent with the load, and the minimum value of the oil film thickness is 6.75μm. The bearing orbital path is mainly in the upper shell region. The connecting rod is under compressive stress in most of the time, but in the end of scavenging stroke is under tensile stress. Oil film pressure is mainly on upper shell, and the wear of the upper shell will be significantly larger than that of the lower shell. The big end bearing is under dynamic lubrication condition during whole working cycle.
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
Based on elastohydrodynamic lubrication model of dynamically loaded bearing, and rough contact theory, AVL Excite Power Unit software was employed to investigate the EHD lubrication analysis for bid end connecting rod bearing of a low-speed two-stroke marine diesel engine. Relevant parameters of lubrication characteristics were analyzed, and the results show that the maximum bearing load appears at 10°CA and the force will go to other directions at the 300°CA. The trend of maximum film pressure is consistent with the load, and the minimum value of the oil film thickness is 6.75μm. The bearing orbital path is mainly in the upper shell region. The connecting rod is under compressive stress in most of the time, but in the end of scavenging stroke is under tensile stress. Oil film pressure is mainly on upper shell, and the wear of the upper shell will be significantly larger than that of the lower shell. The big end bearing is under dynamic lubrication condition during whole working cycle.
Keywords
diesel engines; elastodynamics; hydrodynamics; machine bearings; mechanical contact; mechanical engineering computing; rods (structures); rough set theory; AVL excite power unit software; EHD lubrication analysis; connecting rod big end bearing; elastohydrodynamic lubrication model; rough contact theory; tensile stress; two-stroke marine diesel engine; Couplings; Lubrication; big end bearing; connecting rod; lubrication; marine diesel engine;
fLanguage
English
Publisher
ieee
Conference_Titel
Computer Application and System Modeling (ICCASM), 2010 International Conference on
Conference_Location
Taiyuan
Print_ISBN
978-1-4244-7235-2
Type
conf
DOI
10.1109/ICCASM.2010.5622574
Filename
5622574
Link To Document