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Published in Heinz P. Bloch, Kenneth E. Bannister, Practical Lubrication for Industrial Facilities, 2020
Heinz P. Bloch, Kenneth E. Bannister
With diesel engines, there is not the spread in volatility characteristics between fuel and lubricating oil that there is with gasoline engines. For this reason, there is no simple test for the crankcase dilution of diesel engine. The closest approximation is made by noting the reduced viscosity of the used oil as compared with that of the new oil and estimating what percentage of fuel dilution would cause such a viscosity reduction.
Investigations on durability and lubricating oil degradation of CIDI engine fuelled with tamarind seed oil methyl ester
Published in International Journal of Ambient Energy, 2022
Vishal Kumbhar, Anand Kumar Pandey, Anil Varghese, Virendra Patil
The important properties of engine lubricating oil are viscosity, density, flash point and total base number (TBN). These properties govern the rate of lubricating oil consumption and ensure the proper lubrication of engine components. In the long-term operation of the engine, the lubricating oil properties can deteriorate which directly affects the overall engine life. Dilution of fuel with engine lubricating oil, which is also known as ‘crankcase dilution’, is the common issue that occurs in engines. The lubricating oil, when returning back to the crank case, gets diluted with fuel which results in significant degradation of lubricating oil which alters its properties such as viscosity, density, and flash point (Uy et al. 2011). The degree of lubricating oil degradation increases with the operating time of the engine and hence it is essential to determine the effect of fuel used on the lubricating oil degradation. In the present work, lubricating oil samples were collected every 128 h from engines operated on diesel and TSOME.