Open AccessNumerical study of the physical processes of gas leakage in the compression ring in diesel engines
Author(s) -
J A Pabón León,
Jhan Piero Rojas Suárez,
M S Orjuela Abril
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2118/1/012016
Subject(s) - lubrication , leakage (economics) , diesel engine , compression (physics) , cylinder , matlab , compression ratio , combustion , mechanics , diesel fuel , materials science , internal combustion engine , piston ring , mechanical engineering , power (physics) , ring (chemistry) , automotive engineering , engineering , computer science , composite material , physics , thermodynamics , chemistry , organic chemistry , economics , macroeconomics , operating system
In this research, the construction of a numerical model is proposed for the analysis of the friction processes and the thickness of the lubrication film present in the compression ring of internal combustion engines. The model is built using MATLAB software, and three load conditions are used as reference (2 Nm, 4 Nm, and 6 Nm) with a rotation speed of 3600 rpm, which correspond to a stationary single-cylinder diesel engine. Comparison between model estimates and experimental results show that the development model could predict the actual engine conditions. The deviation between the numerical model and the experimental data was 17%. It was shown that the increase in engine load causes a 16% increase in the friction force of the compression ring, which implies a 50% increase in power loss due to friction processes. In general, the model developed allows the analysis of the friction processes in the compression ring and its effect on the lubrication film, considering the leakage of the combustion gases. In this way, the construction of a more complex mathematical model is achieved, which allows improving the precision in the analyzes related to the interaction between the compression ring and the cylinder liner.