Lubricating Oil Contamination in Indirect Injection Diesel Engines

1976 ◽  
Author(s):  
I. B. Smith ◽  
A. R. Chowings
Keyword(s):  
Diesel Engines ◽  
Lubricating Oil ◽  
Oil Contamination

Application of Oil Analysis Techniques to Diesel Engine Condition Monitoring

2012 ◽  
Vol 224 ◽  
pp. 217-220
Author(s):  
Yong Guo Zhang ◽  
Xu Feng Jiang ◽  
Xiao Wen Wu ◽  
Zong Ying
Keyword(s):  
Diesel Engine ◽  
Condition Monitoring ◽  
Diesel Engines ◽  
Lubricating Oil ◽  
Oil Contamination ◽  
Oil Analysis ◽  
Mechanical Wear ◽  
Analysis Techniques ◽  
Wear Condition ◽  
Engine Condition

In order to verify the validity of oil analysis for heavy diesel engine condition monitoring, the lubricating oil were sampled from the lubricating system of the domestic diesel engines, and then were tested by oil analysis (including contamination detection, periodic sampling test and ferrography technology). The results showed that oil analysis could monitor the lubricating oil contamination and mechanical wear condition to make diesel engines avoid early mechanical failure.

Method for Analyzing Lubricating Oil Contamination of Aircraft Systems

2002 ◽  
Author(s):  
Gordon J. J. Bartley ◽  
Andy M. Anderson ◽  
Kenneth B. Jones
Keyword(s):  
Lubricating Oil ◽  
Oil Contamination ◽  
Aircraft Systems

scholarly journals Influence of lubricating oil centrifugal separation intensity in combined cleaning systems on marine diesel engine

2020 ◽  
Vol 2020 (3) ◽  
pp. 23-32
Author(s):  
Nikolai Sergeevich Molokov ◽  
Gennadiy Petrovich Kicha ◽  
Andrei Veniaminovich Nadezkin
Keyword(s):  
Diesel Engines ◽  
Experimental Simulation ◽  
Lubricating Oil ◽  
Centrifugal Separation ◽  
Fuel Quality ◽  
Resource Saving ◽  
Minimum Value ◽  
Marine Diesel ◽  
Engine Wear ◽  
Capacity Index

The article considers the rationality of combined lubricating oil cleaning system in the automatically operated marine diesel engines. The system includes a self-recovering filter and a self-cleaning centrifugal purifier. This combination is found to obtain resource-saving oil using coupled with minimum engine wear and increased reliability. The full-flow filtration of oil in a die-sel engine lubricating system is necessary to protect its friction couples (bearings) from abrasive wear. Centrifugal separation contributes deep oil purification i.e. removal of insoluble impurities reducing lubricating oil service life. By means of experimental simulation there has been found a minimum value of centrifugal purifier capacity index, when engine wear reaches the lowest level and keeps stable. The dependence of engine wear on the fuel quality and centrifugal purification intensity represented by centrifugal purifier capacity index is displayed. The adequacy variance was calculated, the adequacy of the found model being checked by using Fisher criterion. The experimental design and processing of the results have been carried out using orthogonal central composite plan of the second order. Specificity of polynomial when all the points of extremum show the minimum value of engine wear was presented. The model is designed to select the proper oil purifier for forced marine diesel engines with average and increased revolutions.

Study on Wear of Piston Rings in Diesel Engines With Exhaust Gas Recirculation

2001 ◽  
Author(s):  
Tokuro Sato ◽  
Hideki Saito ◽  
Koji Korematsu ◽  
Junya Tanaka
Keyword(s):  
Diesel Engines ◽  
Time History ◽  
Acid Number ◽  
Engine Oil ◽  
Lubricating Oil ◽  
Base Number ◽  
Piston Rings ◽  
Total Acid ◽  
Residual Content ◽  
Measured Time

Abstract The wear of piston rings in the diesel engines with EGR system is studied experimentally. In order to clarify the effect of PM on the wear, the wear of the piston rings in the test engine is measured, (1) when the non-soluble in the lubricating oil is removed by the oil filters, (2) when PM in the re-circulating gas is removed by the DPF, (3) when the carbon black is added in the lubricating oil. The experimental results are discussed with the measured time history of kinematic viscosity, total base number, total acid number, ZDTP survival rate, and carbon residual content and its particle size in the engine oil.

scholarly journals Research and development of commercially viable lubricants to intensify working life of marine diesel engines and cylinder piston group in internal combustion engines

2021 ◽  
Vol 2021 (4) ◽  
pp. 62-74
Author(s):  
Vasiliy Aleksandrovich Chanchikov ◽  
Ivan Nikolaevich Guzhvenko ◽  
Alexandr Ivanovich Andreev ◽  
Marina Aleksandrovna Shulimova ◽  
Sergey Aleksandrovich Svekolnykov
Keyword(s):  
Diesel Engines ◽  
Engine Oil ◽  
Lubricating Oil ◽  
Mechanical Mixing ◽  
Friction Modifier ◽  
Marine Engine ◽  
Piston Group ◽  
Molybdenum Diselenide ◽  
Marine Diesel ◽  
Cylinder Piston

The paper presents the results of studying the influence of variable characteristics of lubricating oils for marine diesel engines (concentration of layered friction modifier in lubricating oil, viscosity of lubricating oil, contact pressure in the friction zone) on the tribological parameters of parts of the cylinder-piston group of marine diesel engines. There are considered the aspects of increasing the reliability and wear resistance of the cylinder-piston group of marine diesel engines when a layered friction modifier is added to the base lubricating oil in a concentration of 1.5 vol.%. There have been carried out the comparative tribological studies of M-16G2CS lubricating oil including an additive based on molybdenum diselenide. Dependences of the wear of parts of the cylinder-piston group of a marine engine on different parameters of the studied lubricants are shown. The wear rate of experimental samples in conditions of variable characteristics of lubricants has been studied. According to the tribological studies of lubricants and structural materials, the tribological rating of lubricating compositions containing M16G2CS marine engine oil as a base and a layered friction modifier - molybdenum diselenide as a tribologically active additive was built. The test tool for the antiwear ability of lubricants is a friction machine of an original design with abraded samples according to the “ball-cylinder” contact scheme. Mechanical mixing of the lubricating medium of “oil + additive” type on the RPU-0.8-55A rotary-pulsating unit was one of the variable parameters in the tests. The tribological efficiency of the studied antiwear additive varies depending on the type of mixing of the additive solution before adding to the base lubricating oil and makes 13-54% (the difference in the diameter of the wear spot of the sample) for mechanical mixing, and for rotary-pulsation mixing - 45-56%.

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