Theoretical background and results of a study on changes in oil alkalinity of diesel engines

Alkalinity is a primary indicator for neutralizing insoluble impurities in oil. Alkaline additives decrease as oils interact with fuel combustion products containing significant amounts of sulfur and nitrogen. Literature data suggests that adding 2-3% of an effective ashless dispersant of a specifie...

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Bibliographic Details
Published in:IOP conference series. Earth and environmental science 2024-08, Vol.1390 (1), p.12001
Main Authors: Musurmanov, Ravshan, Utaev, Sobir, Turaev, Abdugani
Format: Article
Language:English
Subjects:
Alkalinity
Combustion products
Diesel engines
Dispersants
Fuel combustion
Impurities
Internal combustion engines
Lubrication systems
Oils & fats
Opening hours
Sulfur
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Summary:Alkalinity is a primary indicator for neutralizing insoluble impurities in oil. Alkaline additives decrease as oils interact with fuel combustion products containing significant amounts of sulfur and nitrogen. Literature data suggests that adding 2-3% of an effective ashless dispersant of a specified type can be equivalent to increasing the alkaline number of the oil by approximately 10 mg KOH/g through the addition of a metal-alkalinity additive to the oil. Based on operational study results, it can be concluded that after the first 100 hours of operation, the alkalinity value ranges from 6-4.3 mg KOH/g, and after 300 hours of operation, the alkalinity value reaches its maximum value of 2 mg KOH/g. Oils with an alkalinity of less than 2 mg KOH/g already indicate an unsatisfactory condition of the oil when lubricating the engine. To maintain the alkalinity value at a given level, it is recommended to continuously introduce tribomechanical stabilizers into the engine lubrication system.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/1390/1/012001