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1 2024

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Evaluation of the impact of the thermal state of a diesel engine on its efficiency

Zacharewicz Marcin, Zadrąg Ryszard, Bogdanowicz Artur, Socik Paweł, Wirkowski Paweł, Hołownia Jakub

Combustion Engines

2024

R. 63, nr 1

30--36

The paper presents the results of model and empirical research on the influence of the thermal state of a diesel engine (oil temperature) on its indicated (thermal) efficiency. The paper contains a test plan, including a description of the test object, test equipment, and measurement points on a real object. In the following part, the results of tests carried out on a real object (laboratory single-cylinder engine) and the results of model tests obtained on the original engine model are presented. The results are presented both in tabular and graphical form. The obtained test results allowed to determine the relative value of the influence of the engine's thermal state on its efficiency for various operating conditions (load and rotational speed).