The effect of liquid temperature and viscosity on the amplitude-frequency characteristics of a viscotic torsion damper

• Autorzy: Homik W.

Identyfikatory

DOI

10.2478/v10012-012-0042-2

• Języki publikacji: EN

Abstrakty

EN

The article discusses causes of the appearance of transverse, longitudinal and torsional crankshaft vibrations in multi-cylinder internal combustion engines. Particular attention is paid to the torsional vibration which is the most severe threat to engine crankshafts. Damping methods making use of torsion dampers are presented. With the reference to viscotic dampers, problems with their damping efficiency are discussed in the context of viscosity changes of the damping liquid. The article also presents the amplitude-frequency characteristics of a series of viscotic dampers, which were recorded experimentally on the research rig and on a real object. An idea of vibration damper metric is given.

Słowa kluczowe

EN

torsional vibration; torsional vibration damping; torsional vibration dampers; crankshaft; amplitude-frequency characteristics; liquid viscosity; damper metric

• Wydawca: Gdańsk University of Technology, Faculty of Ocean Engineering & Ship Technology
• Czasopismo: Polish Maritime Research
• Rocznik: 2012
• Tom: nr 4
• Strony: 71--77
• Opis fizyczny: Bibliogr. 16 poz., rys., tab.

Twórcy

autor

Homik W.

• Rzeszow University of Technology The Faculty of Mechanical Engineering and Aeronautics, Al. Powstańcow Warszawy 8, 35-959 Rzeszow, POLAND; tel.: [phone] w. 1637, [phone]

Bibliografia

• 1. Brun R.: High-speed Diesel engines, (in Polish) WKiL 1973
• 2. Dąbrowski Z. Maksymiuk M.: Shafts and axles, (in Polish) PWN 1984,
• 3. Dąbrowski Z.: Machine shafts, (in Polish) PWN 1999
• 4. Homik W.: Ph.D. thesis: Optimisation of the viscotic torsion damper (in Polish), Rzeszow 1997
• 5. Homik W.: Design of viscotic torsion dampers (in Polish). Przeglad Mechaniczny 10’ 07
• 6. Homik. W.: Torsional vibration of the engine crankshaft without damper and with a viscotic vibration damper (in Polish), Przegląd Mechaniczny No. 9’ 2008 r.
• 7. Homik W.: Liquid viscosity changes during the operation of a viscotic vibration damper (in Polish), Przegląd Mechaniczny No. 3’ 2009 r.
• 8. Homik W., Szlachta A.: Technology of machining and assembly of viscotic dampers (in Polish), International Scientific Conference, Pro-Tech-Ma 2009
• 9. Homik W.: Criteria of characteristics evaluation – “quality factor” of the viscotic torsion damper for an internalcombustion engine crankshaft (in Polish), Western Scientific Centre of Ukrainian Transport Academy - Transportna Akademia Ukraini. Praci Zachodnowo Naukowo Centrum No. 19. 2009,
• 10. Homik W.: Diagnostics, maintenance and regeneration of torsional vibration dampers for crankshafts of ship diesel engines, Polish Maritime Research, No 1/2010
• 11. Homik W.: Damping of torsional vibration of ship engine crankshafts – general selection methods of viscous vibration damper. Polish Maritime Research, No 3/2011
• 12. http://www.google.pl/search?q=tw%C3%B3rcy+silnik%C3%B3w+spalinowych
• 13. Jędrzejowski J.: Mechanics of motor-car engine crankshaft assemblies (in Polish)
• 14. Niewiarowski K.: Piston internal-combustion engines (in Polish), WKiL 1973
• 15. Wajand J. A., Wajand J. T.: Medium- and high-speed piston internal-combustion engines (in Polish), PWN 1984
• 16. Wajand J.A.: Diesel engines (in Polish), WKiL 1973