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Mechanics of Machines, Mechanisms and Materials

3_2026_sen_2

Title of the article MATHEMATICAL MODEL OF THE TORSIONAL SYSTEM OF A 4-CYLINDER 4CHN 11.0/12.5 ENGINE
Authors

NIKISHEV Alexander A., Head of the Design Engineering Department of the Chief Design Engineer’s Office, OJSC Holding Managing Company MINSK MOTOR PLANT, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.

PETRUCHENKO Alexander N., Ph. D. in Eng., Assoc. Prof., Senior Researcher of the Chief Design Engineer’s Office, OJSC Holding Managing Company MINSK MOTOR PLANT, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.
In the section MECHANICS OF MOBILE MACHINES
Year 2026
Issue 3(76)
Pages 14–22
Type of article RAR
Index UDK 621.43
DOI https://doi.org/10.46864/1995-0470-2026-3-76-14-22
Abstract Torsional vibrations have a significant impact on engine operation, leading to deterioration in performance or even complete failure. The development of new engines and the modernization of existing ones necessitate the ability to assess and predict the occurrence of significant effects from torsional vibrations. The general principles of constructing a mathematical model of a torsional system are examined, and a mathematical model of the torsional system of the 4CHN 11.0/12.5 engine is proposed. This model allows for determining the amplitudes, phase angles of the harmonic components of angular displacements, and instantaneous angular coordinates for each mass of the system during engine operation in any mode.
Keywords torsional vibrations, crankshaft, equivalent torsional system, inertia, stiffness, damping, torque
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