Son Gun Kwon,
Chol Min Ri,
Sol Song Pak,
- Faculty of Dynamics, Kim Il Sung University, Taesong District, Pyongyang, DPR Korea, Korea
- Faculty of Dynamics, Kim Il Sung University, Taesong District, Pyongyang, DPR Korea, Korea
- Faculty of Dynamics, Kim Il Sung University, Taesong District, Pyongyang, DPR Korea, Korea
Abstract
The working stability of turbochargers supported by floating ring bearings depends on not only the structure of the rotors but also working characteristic of floating ring bearings. These working characteristics are related to working conditions and design parameters of floating ring bearings. The main goal of this research is to investigate the working characteristics of bearings by design parameters of floating ring bearings. In order to study the working characteristics of bearings, turbocharger supported in FRBs are modeled as multi-body systems and the inner characteristics of FLBs are described by the Reynold’s equation. Numerical analysis about the interaction of the rotor-FRB system is taken by using time integral method and calculus of finite differences. Analysis of the influence of design parameter is taken in the main working field. Through this analysis, we can know that the tolerance ratio is the main factor in the floating ring bearing any other than the diameter ratio and length ratio and more convenient to regulate. It is more helpful to improve the dynamical response of turbocharger that we analysis the influence of design parameters of FRBs on the working characteristics of bearings.
Keywords: Rotordynamics, turbocharger, journal bearing, floating ring bearing
[This article belongs to Journal of Experimental & Applied Mechanics ]
Son Gun Kwon, Chol Min Ri, Sol Song Pak. Effects of Bearing Design Parameter on Working Characteristics of Floating Ring Bearing. Journal of Experimental & Applied Mechanics. 2024; 15(03):39-52.
Son Gun Kwon, Chol Min Ri, Sol Song Pak. Effects of Bearing Design Parameter on Working Characteristics of Floating Ring Bearing. Journal of Experimental & Applied Mechanics. 2024; 15(03):39-52. Available from: https://journals.stmjournals.com/joeam/article=2024/view=188841
References
- Ma, Z. Wu, X. Tai, B. Wen, Dynamic characteristics analysis of a rotor system with two types of limiters. International Journal of Mechanical Sciences 88 192-201, 2014. (8,5)
- Gan, Y.Wang, S. Yang, Y. Cao, Nonparametric modeling and vibration analysis of uncertain Jeffcott rotor with disc offset. International Journal of Mechanical Sciences 78 126134, 2014. (8,3)
- LI C H, ROHDE S M, On the steady state and dynamic performance characteristics of floating ring bearings[J]. Journal of Lubrication Technology-Transactions of the ASME, 1981, 103: 389–397. (5)
- Hung Nguyen-Schäfer H, Rotordynamics of Automotive Turbochargers. Springer, 2012.
- WANG Longkai, BIN Guangfu, Effects of Floating Ring Bearing Manufacturing Tolerance Clearances on the Dynamic Characteristics for Turbocharger. Chinese Journal of Mechanical Engineering, 2015, 28(3): 530–539.
- TIAN L, WANG W J, PENG Z J, Effects of bearing outer clearance on the dynamic behaviors of the full floating ring bearing supported turbocharger rotor[J]. Mechanical Systems and Signal Processing, 2012, 31(0): 155–175.
- A. Papadopoulos, P.G. Nikolakopoulos and G.D. Gounaris, Identification of clearances and stability analysis for a rotor-journal bearing system. Mechanism and Machine Theory, 43, 411-426,2008. (8,14)
- Luboš Smolik, Michal Hajžman, Miroslav Byrtus, Investigation of bearing clearance effects in dynamics of turbochargers. International Journal of Mechanical Sciences,DOI: 10.1016/j.ijmecsci.2016.07.013.
- Schweizer, M. Sievert, Nonlinear oscillations of automotive turbocharger turbines, Journal of Sound and Vibration 321 (3- 5) (2009) 955–975. doi:10.1016/j.jsv.2008.10.013. (16,37)
- Schweizer B , Rieger NF , Black HF , Thomas ChB . Dynamics and stability of turbocharger rotors. Arch Appl Mech 2010;80(9) ISSN 0939-1533 (17,4) .
- Dakel M, Baguet S, Dufour R, Nonlinear dynamics of a support-excited flexible rotor with hydrodynamic journal bearings[J]. Journal of Sound and Vibration, 2014, 333(10): 2774–2799. (5,10)
- TIAN L, WANG W J, PENG Z J, Dynamic behaviors of a full floating ring bearing supported turbocharger rotor with engine excitation[J]. Journal of Sound and Vibration, 2011, 330(20): 4851–4874. (5,14)
- SHI Wei, WEI Daogao, ZHU Lei, et al, Study on effects of clearance ratio of inner to outer film on turbocharger rotor instability[J]. Chinese Journal of Automotive Engineering, 2014,4(2): 130–136. (in Chinese). (5,16)
- GUNTER E J, CHEN W J, Dynamic stability and whirl motion of large diesel engine turbochargers in floating bush and multi-lobed bearings[C]//Vibration Institute 34th Annual Meeting, Illinois, USA,June 22–26, 2010. (5,20)
- CHEN W J, GUNTER E J, Introduction to dynamics of rotor-bearing systems[M]. Victoria: Trafford Publishing, 2010. (5,23)
- Woschke, C. Daniel, S. Nitzschke, Excitation mechanisms of non- linear rotor systems with floating ring bearings – simulation and validation, International Journal of Mechanical Sciences (2017), doi:10.1016/j.ijmecsci.2017.09.038.
- Pavel Novotný, Petr Š kara, Juraj Hliník, The effective computational model of the hydrodynamics journal floating ring bearing for simulations of long transient regimes of turbocharger rotor dynamics. International Journal of Mechanical Sciences.148(2018) 611-619.
- R. Gero, C. M. McC.Ettles, An evaluation of finite difference and finite element methods for the solution of the reynolds equation, ASLE Transactions 29 (1986) 166–172. doi: 10.1080/05698198608981674. (16,22)
- Yu, T. G. Keith Jr, A boundary element cavitation algorithm, Tribology transactions 37 (2) (1994) 217–226. doi:10.1080/10402009408983286. (16,23)
- Hori, Hydrodynamic Lubrication. Springer, Tokyo, 2006. (16,33)
- W. Stachowiak and A. W. Batchelor, Engineering Tribology. 4th Ed.St. Louis: Butterworth- Heinemann, 2014. (8,31)
- Homer Rahnejat,Tribology and dynamics of engine and powertrain, Woodhead Publishing,2010.
- AVL List Gmbh, Theory AVL EXCITE POWER UNIT VERSION 2013.2, Oct. 30, 2013.
- A. Lakshminarayanan, Avinash Kumar Agarwal, Design and Development of Heavy Duty Diesel Engines, Springer, 2020.
Journal of Experimental & Applied Mechanics
Volume | 15 |
Issue | 03 |
Received | 12/07/2024 |
Accepted | 28/10/2024 |
Published | 11/12/2024 |