Keywords
Wear
Oil temperature
Friction force
Hydrodynamic
Buoyancy force
Abstract
Viscous torsional vibration dampers are used to dissipate the energy of the periodically varying rotational motion of the crankshaft. The paper discusses the wear processes that can occur during the operation of dampers. The authors defined the static characteristics of a damper, including the thermal power generated by, the t friction forcesemperature of the damper housing, the position of the inertia ring relative to the housing and the oil flow resistance coefficients. The calculated static characteristics take into account the friction occurring in the oil filling the spaces between the cylindrical and frontal surfaces of the inertia ring and the housing. Pressure distributions in the oil film were presented for a given relative velocity. The effect of the relative velocity on the housing temperature was determined and the relative velocity range in which the oil temperature will not exceed the permissible value was determined.
References
Norm DIN 31652, Teil 1, 2, 3: Gleitlager - Hydrodynamische Radial-Gleit lager im stationären Betrieb Homik. W.: Kinematic Analysis of a Viscous Torsional Vibration Damper Using a Rheological Fluid. Przegląd Mechaniczny, November 2006
Homik W.: Changes in Fluid Viscosity During the Operation of a Viscous Vibration Damper. Przegląd Mechaniczny. No. 3, 2009.
Homik W.: Diagnostics, Servicing and Regeneration of Torsional Vibration Dampers for Crankshafts of Marine Internal Combustion Engines,Polish Maritime Research. No. 1/2010.
Homik W.: Effect of Temperature and Fluid Viscosity on Amplitude – Frequency Characteristics of Viscous Torsional Vibration Dampers. Polish Maritime Research. No. 3, 2012
Homik W.: Diagnostics of Viscous Tortional Vibration Dampers, Zeszyty Naukowe Politechniki Śląskiej. Seria Transport. Z. 85/2014
Homik W.: Viscous Torsional Vibration Dampers, Państwowy Instytut Badawczy w Radomiu, 2015, ISBN 978-837789-377-7
Homik W., Mazurkow A., Woś P.: Application of a Thermo-Hydrodynamic Model of a Viscous Torsional Vibration Damper to Determining Its Operating Temperature in a Steady State. Materials. T. 14, z. 18, 2021
Homik W., Mazurkow A., Chmielowiec A.: Determination of a Torsional Vibration Viscous Damper’s Operating Temperature Using a New Thermo-Hydrodynamic Model. Transport Problems. T. 18, z. 4, 2023
Ker Wilson W.: Practical solution of torsional vibration problems, Chapman & Hall. Vol. I-IV, London, 1968.
Lund J. W.: Review of the Concept of Coefficients for Fluid Film Journal Bearings. Trans. ASME – J. Tribol. 1987, Vol. 109, No. 1.
Mazurkow A.: Theory of Hydrodynamic Lubrication of Sliding Bearings. Oficyna Wydawnicza Politechniki Rzeszowskiej. Rzeszów, 2019.
Wajand J. A., Wajand J. T.: Medium- and High-Speed Piston Internal Combustion Engines. WNT, Warsaw, 1993.
Zygmuntowicz J.: The Development of the Torsional Vibration Calculations Program Applied in H. Cegielski Company. 23rd CIMAC Congress/Hamburg 2001, Paper No. 9c-02.
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