Starved lubrication analysis for the top ring and cylinder liner of a two-stroke marine diesel engine considering the thermal effect of friction

2021 ◽  
pp. 146808742110479
Author(s):  
Zhan Liu ◽  
Xin Ning ◽  
Xianghui Meng ◽  
Qiucheng Liao ◽  
Jintao Wang
Keyword(s):  
Diesel Engine ◽  
Thermal Effect ◽  
Cylinder Liner ◽  
Test Method ◽  
Tribological Characteristics ◽  
Marine Diesel Engine ◽  
Heavy Load ◽  
Marine Diesel ◽  
Orthogonal Test Method ◽  
Starved Lubrication

The thermal effect of friction plays an important role in friction pairs working under heavy load and starved lubrication conditions, such as the piston ring and cylinder liner (PRCL) system of two-stroke marine diesel engines. Friction heat will degrade the lubrication and increase the scuffing risk. In this study, considering the thermal effect of friction, the tribological characteristics of the top ring and cylinder liner of a two-stroke marine diesel engine under starved lubrication are studied. It is found that the temperature rise due to friction is significant and has a strong influence on the tribological characteristics of the PRCL system. Moreover, based on the orthogonal test method, the effects of groove textures under different oil supplies are also explored. Only well-designed groove textures can reduce friction and wear at the same time.

scholarly journals Evaluation of Characteristics of CBN Honing Stone for Cylinder Liner Honing of Marine Diesel Engine

2012 ◽  
Vol 2 (4) ◽  
pp. 239-243
Author(s):  
Jae-Hyun Jeong ◽  
Jong-Sun Kim ◽  
Yeon-Chang Lee ◽  
Sung-Yul Lee ◽  
Kyung-Man Moon ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Cylinder Liner ◽  
Marine Diesel Engine ◽  
Marine Diesel

scholarly journals Actual Results of Cylinder Liner Wear On Recent Low Speed Marine Diesel Engine

1988 ◽  
Vol 23 (11) ◽  
pp. 714-726
Author(s):  
Kazuhiko Takeda ◽  
Tadahiko Kurosawa ◽  
Yoshihiro Toyosawa ◽  
Toshio Hikima
Keyword(s):  
Diesel Engine ◽  
Cylinder Liner ◽  
Marine Diesel Engine ◽  
Low Speed ◽  
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.

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