Development of High Temperature Diesel Engine Piston Ring and Cylinder Liner Tribology

2003 ◽  
Author(s):  
Lloyd Kamo ◽  
Philipe Saad ◽  
Rudolf Mnatsakanov ◽  
Walter Bryzik ◽  
Milad Mekari
Keyword(s):  
High Temperature ◽  
Diesel Engine ◽  
Piston Ring ◽  
Cylinder Liner ◽  
Engine Piston

Three-Dimensional Finite Element Coupled Analysis of a Diesel Engine Piston

2014 ◽  
Vol 684 ◽  
pp. 347-353
Author(s):  
Qi Liu ◽  
Guang Yao Ouyang ◽  
Ping Zhang
Keyword(s):  
Finite Element ◽  
Thermal Stress ◽  
Diesel Engine ◽  
Stress Field ◽  
Cylinder Liner ◽  
Coupled Analysis ◽  
Stress Effect ◽  
Element Analysis ◽  
Engine Piston ◽  
Thermal Mechanism

The paper analyzed the temperature field and the thermal stress field of a diesel engine piston with finite element analysis software ANASYS, then used the thermal mechanism indirect coupled method, researched the coupled stress field of piston. The result indicated that the point of the highest temperature located on the middle of firebox which under the dangerous temperature of the material; under thermal stress effect, the max displacement of the piston did not exceed the clearance between piston and cylinder liner, but the non-roundness at the third ring reached 0.08mm, which had some influence on the pressurize and lubricate of piston; under thermal mechanism coupled effect, the point of max stress located on the interface of the seat of the pin and the pin hole, so as the top on the pin hole and inner on the seat of pin, so it was recommended to set rib between cervix and the seat of pin of piston to enhance the practical carrying capacity of the seat of the pin.

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.

First Paper: Measurement of the Oil-Film Thickness between the Piston Rings and Liner of a Small Diesel Engine

1974 ◽  
Vol 188 (1) ◽  
pp. 253-261 ◽  
Author(s):  
G. M. Hamilton ◽  
S. L. Moore
Keyword(s):  
Diesel Engine ◽  
Film Thickness ◽  
Piston Ring ◽  
Cylinder Liner ◽  
Piston Rings ◽  
Oil Film

A capacity gauge has been designed for operating in the conditions of a working engine. The method of using it for determining the oil-film thickness and piston-ring profile is described. Oil-film thicknesses in the range 0·4-2·5 μm between the piston rings and the cylinder liner have been observed. Their variation with speed, load and temperature has been measured and it is concluded that their behaviour is essentially hydrodynamic.

Continued Development of a Coal/Water Slurry-Fired Slow-Speed Diesel Engine: A Review of Recent Test Results

1987 ◽  
Vol 109 (4) ◽  
pp. 465-476 ◽  
Author(s):  
S. E. Nydick ◽  
F. Porchet ◽  
H. A. Steiger
Keyword(s):  
Diesel Engine ◽  
Piston Ring ◽  
Cylinder Liner ◽  
Diesel Oil ◽  
Pollutant Emissions ◽  
Liquid Fuels ◽  
Slow Speed ◽  
Water Slurry ◽  
Technological Advances ◽  
Coal Water Slurry

The results of tests performed on a slow-speed, two-stroke single-cylinder diesel engine show that thermal efficiency is approximately the same when fired with coal/water slurry fuels and diesel oil and that exhaust pollutant emissions, most notably NOx, are lower with the coal/water slurry fuels. Engine wear, particularly at the piston ring/cylinder liner interface, is considerably greater than that which occurs with liquid fuels. However, it is concluded that by means of technological advances regarding piston ring/cylinder liner materials, new designs, and new concepts in lubrication, a reliable and economical coal/water slurry-fired slow-speed engine can be developed.

Effects of textured cylinder liner piston ring on performances of diesel engine under hot engine tests

2021 ◽  
Vol 146 ◽  
pp. 111193
Author(s):  
Xiang Rao ◽  
Chenxing Sheng ◽  
Zhiwei Guo ◽  
Xuecheng Zhang ◽  
Huabing Yin ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Piston Ring ◽  
Cylinder Liner
Sign in / Sign up

Export Citation Format

Share Document