Published Papers
     Search Papers (Springer,
   After 2008)
     Search Papers (Dbpia,
   Until 2007)
     Search Papers (JMST
   own data base)
       - Classification By Year   
       - Classification By Topic
     Special Issues
   
           
   
 
 
Subject Keyword Abstract Author
 
 
Prediction of transient lubricating oil flows within the connecting-rod of a diesel engine

Shin-Hyoung Kang*, Jeon-Gu Kim, Kyung-Nam Chung
The Journal of Mechanical Science and Technology, vol. 25, no. 1, pp.103-109, 2011

Abstract : This paper develops Aa computer program for the unsteady flow analysis of diesel engine lubrication systems. The possibility of cavitations developing in the big-end bearing groove due to the reciprocating motion of the connecting rod is investigated at the designed running speeds. The flow passage geometry especially the head loss coefficients of the bearing grooves s affects the minimum values of the head and the point when the development of the cavitations is initiated As the loss coefficient at the bigend increases and that of the small-end decreases, then the cavitations can be initiated. An orifice can be used to suppress the development of the cavitations and the diameter ratio and the location needs to be carefully selected to avoid unnecessary pressure loss. The channel size in the connecting rod is also an important parameter for optimization of the overall lubrication system; as the pipe diameter decreases, the minimum head increases and suppresses the cavitations from developing The minimum head always appears at the trailing groove of the big-end bearing.

Keyword : Diesel engine; Lubrication; Connecting rod; Cavitations; Crankshaft

 
 
 
JMST Editorial Office: #702 KSTC New Bldg, 22 7-gil, Teheran-ro, Gangnam-gu, Seoul 06130, Korea
TEL: +82-2-501-3605, E-mail: editorial@j-mst.org
JMST Production Office: #702 KSTC New Bldg, 22 7-gil, Teheran-ro, Gangnam-gu, Seoul 06130, Korea
TEL: +82-2-501-6056, FAX: +82-2-501-3649, E-mail: editorial@j-mst.org