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Chemical decarbonisation of diesel engine and its impact on engine oil degradation
1
Department of mechanical engineering, Armed Forces Academy of General M. R. Štefánik, Slovak Republic
These authors had equal contribution to this work
Submission date: 2025-07-25
Final revision date: 2025-09-29
Acceptance date: 2025-10-13
Online publication date: 2025-11-27
Corresponding author
Pavol Lukášik
Department of mechanical engineering, Armed Forces Academy of General M. R. Štefánik, Demänovská cesta 393, 031 01, Liptovský Mikuláš, Slovak Republic
Department of mechanical engineering, Armed Forces Academy of General M. R. Štefánik, Demänovská cesta 393, 031 01, Liptovský Mikuláš, Slovak Republic
KEYWORDS
TOPICS
ABSTRACT
Modern diesel combustion engines are sensitive to damage to the fuel system and to pollution by carbon deposits. Decarbonisation procedures significantly increase engine life and reduce exhaust emissions. In this experiment, decarbonisation was carried out using the chemical set BG 109 EPR, BG 112 DOC and BG 245 on a Skoda Octavia II with a 2.0 TDi diesel engine type CFFB 103kW (Common Rail). The vehicle had a current odometer reading of 164.882 km. The effect of decarbonisation was monitored during the operation of the vehicle (7 measurements during 7 calendar months during work of 12.716 km). Two mail goals of the long-term experiment were to investigate the effect of chemical decarbonisation of the engine on the degradation of the Shell HELIX HX7 5W-30 oil filling and the condition of the fuel system (nozzle injection). The aim of the research was to confirm the hypothesis that cleaning additives have an impact on the rapid degradation of engine oil, especially in heavily worn diesel engines with high mileage.
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