Tribological Behavior of Plasma Spray Coatings for Marine Diesel Engine Piston Ring and Cylinder Liner

2006 ◽  
Vol 15 (3) ◽  
pp. 328-335 ◽  
Author(s):  
Jong-Hyun Hwang ◽  
Myoung-Seoup Han ◽  
Dae-Young Kim ◽  
Joong-Geun Youn
Keyword(s):  
Diesel Engine ◽  
Plasma Spray ◽  
Piston Ring ◽  
Tribological Behavior ◽  
Cylinder Liner ◽  
Marine Diesel Engine ◽  
Spray Coatings ◽  
Plasma Spray Coatings ◽  
Engine Piston ◽  
Marine Diesel

scholarly journals Wear Test of Cylinder Liner and Piston Ring of Marine Diesel Engine Based on Computer Simulation Technology

2021 ◽  
Vol 2074 (1) ◽  
pp. 012033
Author(s):  
Chen Peng
Keyword(s):  
Computer Simulation ◽  
Diesel Engine ◽  
Piston Ring ◽  
Wear Test ◽  
Cylinder Liner ◽  
System Structure ◽  
Mechanical Equipment ◽  
Marine Diesel Engine ◽  
Practical Operation ◽  
Marine Diesel

Abstract With the development of computer technology, computer simulation has become a powerful tool to carry out liner - piston ring wear experiment of Marine diesel engines. Turbocharged diesel engine is a typical multi-system and multi-level complex power plant. There are many factors that affect the piston change and wear speed of diesel engine in practical operation, and many factors are interrelated and influence each other. Marine diesel engine is the most important mechanical equipment in Marine engine room, which has a complex system structure. If the diesel engine fails, it will seriously affect the navigation safety of the ship. In order to reduce the loss of Marine diesel engine piston ring wear, it is necessary to rely on fault diagnosis technology for timely and reliable diagnosis and maintenance.

scholarly journals Investigation of different piston ring curvatures on lubricant transport along cylinder liner in large two-stroke marine diesel engines

2017 ◽  
Vol 232 (1) ◽  
pp. 85-93 ◽  
Author(s):  
H Overgaard ◽  
P Klit ◽  
A Vølund
Keyword(s):  
Diesel Engine ◽  
Piston Ring ◽  
Reynolds Equation ◽  
Hydrodynamic Lubrication ◽  
Cylinder Liner ◽  
Marine Diesel Engine ◽  
Cyclic Variation ◽  
Ring Shape ◽  
Marine Diesel ◽  
The Finite Difference Method

A theoretical investigation of the hydrodynamic lubrication of the top compression piston ring in a large two-stroke marine diesel engine is presented. The groove mounted piston ring is driven by the reciprocal motion of the piston. The ring shape follows a circular geometry and the effect of changes in radii is analysed. A numerical model based on the finite difference method in 1D has been developed for solving Reynolds equation in combination with the load equilibrium equation together with flow continuity between the piston ring surface and liner for analysis of the lubricant transport. The cyclic variation throughout one stroke is presented for the minimum film thicknesses at different interesting locations of the piston ring surface together with the friction and the pressure distribution history. The aforementioned parameters have been investigated numerically. The numerical results are presented and discussed.

3-D Numerical Simulation and Experiment Study on the Wear of Piston Ring-Cylinder Liner

2010 ◽  
Vol 139-141 ◽  
pp. 1036-1039 ◽  
Author(s):  
Jian Ping Zhang ◽  
Yan Kun Jiang ◽  
Xin Liu ◽  
Zhe Lin Dong
Keyword(s):  
Diesel Engine ◽  
Piston Ring ◽  
Elastohydrodynamic Lubrication ◽  
Cylinder Liner ◽  
Effect Of Temperature ◽  
Wear Loss ◽  
Asperity Contact ◽  
Warm Start ◽  
Deformation Equation ◽  
Marine Diesel

Aiming at a large marine diesel engine, a mathematical model for the 3-D elastohydrodynamic lubrication analysis of piston ring-cylinder liner was presented. The average Reynolds equation and asperity contact approach were combined with the elastic deformation equation. The asymmetry in the circumferential direction, gas blowby and the effect of temperature and pressure on the oil density and viscosity were considered. The 3-D wear simulation of piston ring-cylinder liner was performed when the diesel engine was operated under warm start and cold start conditions, respectively. The 3-D distribution rules show that the first gas ring has the biggest wear loss, and the maximum wear loss of cylinder liner occurs in the vicinity of TDCF. Finally, the results matched well with the wear measurements, and it indicates the present method is effective and can help engineers to improve the tribological performance of the diesel engine.

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