Browse > Article
http://dx.doi.org/10.5293/KFMA.2003.6.1.051

A Study on the Oil-free Turbocharger Supported by Air Foil Bearing  

Lee Yong-Bok (한국과학기술연구원 트라이볼로지 연구센터)
Kim Tae-Ho (한국과학기술연구원 트라이볼로지 연구센터)
Kim Chang-Ho (한국과학기술연구원 트라이볼로지 연구센터)
Sa Jong-Sung (서일대학 자동차과)
Lee Nam-Soo (한양대학교 기계설계공학과)
Publication Information
The KSFM Journal of Fluid Machinery / v.6, no.1, 2003 , pp. 51-56 More about this Journal
Abstract
The feasibility study on the oil-free turbocharger supported by air foil bearings is investigated. Using the perturbation method, dynamic characteristics of air foil bearings are calculated based on the static equilibrium position of a turbocharger rotor is predicted. With collaboration of calculated stiffness and damping of foil bearing, rotordynamic analysis is performed using the finite element method. The effects of bump compliance and bearing clearance on rotordynamic characteristics of the oil-free turbocharger such as the critical speeds, eccentricity ratio, vibration amplitude and stability are investigated.
Keywords
Air foil bearing; oil-free turbocharger; rotordynamics;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Dellacorte, C., Fellenstein, J., A., Benoy, P., A., 1998, "Evaluation of Advanced Solid Lubricant Coatings for Foil Air Bearings Operating at 25 and 500 C," NASA TM-1998-206619.
2 Dellacorte, C., 2000, "The Evaluation of a Modified Chrome Oxide Based High Temperature Solid Lubricant Coating for Foil Gas Bearings," Tribology Transactions, Vol. 43, No. 43, pp. 257-262.   DOI   ScienceOn
3 Heshmat, H., Walowit, J. A., Pinkus, A., 1983, "Analysis of Gas-Lubricated Foil Journal Bearings," Journal of Lubrication Technology, Vol. 105, pp. 647-655.   DOI
4 Friction and Wear Characteristics of Candidate Foil Bearing Materials From 25 C to 800 C /
[ Dellacort, C. ] / NASA TM-107082
5 Howard, S., A., 1999, "Rotordynamics and Design Methods of an Oil-Free Turbocharger," NASA CR-1999-208689.
6 Fellenstein, J., A., 1995, "A New Tribological Test for Candidate Brush Seal Materials Evaluation," NASA TM-106753.
7 Dellacorte, C., 1998, "Friction and Wear Characteristics of Candidate Foil Bearing Materials From 25 C to 800 C," NASA TM-107082.
8 Analysis of Gas-Lubricated Foil Journal Bearings /
[ Heshmat, H.;Walowit, J. A.;Pinkus, A. ] / Journal of Lubrication Technology   DOI
9 The Evaluation of a Modified Chrome Oxide Based High Temperature Solid Lubricant Coating for Foil Gas Bearing Tribology Transactions /
[ Dellacorte, C. ] / Tribology Transactions   DOI   ScienceOn
10 Rotordynamics and Design Methods of an Oil-Free Turbochanger /
[ Howard, S. A. ] / NASA CR-1999-208689
11 A New Tribology Test for Candidate Brush Seal Materials Evaluation /
[ Fellenstein, J. A. ] / NASA TM-106753
12 Evaluation of Advanced Solid Lubricant Coatings for Foil Air Bearings Operating at 25 and 500 C /
[ Dellacorte, C.;Fellenstein, J.A.;Benoy, P. A. ] / NASA TM-1998-206619