The KSFM Journal of Fluid Machinery (한국유체기계학회 논문집)

Korean Society for Fluid machinery (한국유체기계학회)
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A Study on the Oil-free Turbocharger Supported by Air Foil Bearing

공기 포일 베어링으로 지지되는 무급유 터보 과급기 회전체 설계에 대한 연구

  • 이용복 (한국과학기술연구원 트라이볼로지 연구센터) ;
  • 김태호 (한국과학기술연구원 트라이볼로지 연구센터) ;
  • 김창호 (한국과학기술연구원 트라이볼로지 연구센터) ;
  • 사종성 (서일대학 자동차과) ;
  • 이남수 (한양대학교 기계설계공학과)
  • Published : 2003.06.01
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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.

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References

  1. NASA TM-107082 Friction and Wear Characteristics of Candidate Foil Bearing Materials From 25 C to 800 C Dellacort, C.
  2. NASA TM-1998-206619 Evaluation of Advanced Solid Lubricant Coatings for Foil Air Bearings Operating at 25 and 500 C Dellacorte, C.;Fellenstein, J.A.;Benoy, P. A.
  3. Tribology Transactions v.43 no.43 The Evaluation of a Modified Chrome Oxide Based High Temperature Solid Lubricant Coating for Foil Gas Bearing Tribology Transactions Dellacorte, C. https://doi.org/10.1080/10402000008982337
  4. NASA TM-106753 A New Tribology Test for Candidate Brush Seal Materials Evaluation Fellenstein, J. A.
  5. NASA CR-1999-208689 Rotordynamics and Design Methods of an Oil-Free Turbochanger Howard, S. A.
  6. Journal of Lubrication Technology v.105 Analysis of Gas-Lubricated Foil Journal Bearings Heshmat, H.;Walowit, J. A.;Pinkus, A. https://doi.org/10.1115/1.3254697
  7. Dellacorte, C., 1998, "Friction and Wear Characteristics of Candidate Foil Bearing Materials From 25 C to 800 C," NASA TM-107082.
  8. 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.
  9. 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. https://doi.org/10.1080/10402000008982337
  10. Fellenstein, J., A., 1995, "A New Tribological Test for Candidate Brush Seal Materials Evaluation," NASA TM-106753.
  11. Howard, S., A., 1999, "Rotordynamics and Design Methods of an Oil-Free Turbocharger," NASA CR-1999-208689.
  12. Heshmat, H., Walowit, J. A., Pinkus, A., 1983, "Analysis of Gas-Lubricated Foil Journal Bearings," Journal of Lubrication Technology, Vol. 105, pp. 647-655. https://doi.org/10.1115/1.3254697