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Effects of a Journal Bearing Clearance on Rotordynamics of Turbochargers

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F15%3A43925872" target="_blank" >RIV/49777513:23520/15:43925872 - isvavai.cz</a>

  • Result on the web

    <a href="http://www.icoev.org/images/ICoEV2015%20-%20Proceedings.pdf" target="_blank" >http://www.icoev.org/images/ICoEV2015%20-%20Proceedings.pdf</a>

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Effects of a Journal Bearing Clearance on Rotordynamics of Turbochargers

  • Original language description

    In the recent years, turbocharged engines have become more common because of better power-to-weight ratio (and thus lower consumption and emission of air pollutants). However, the better performance comes at a price because turbochargers operate at highspeeds - usually hundreds of thousands revolutions per minute - and tend to be fatigue and stability prone. For this reason, a turbocharger rotor has to be designed carefully with respect to its dynamic properties. The influence of a bearing clearance onstiffness and damping of a single-film journal bearing is well known and documented. Turbochargers, however, are often supported by floating journal bearings, which have two oil films linked by oil feed-holes. Such a bearing have two bearing clearances- between journal and floating ring and between floating ring and housing - which are determined by different temperatures of oil films and also dimensional tolerances. The following paper deals with differences between nominal (cold) and

  • Czech name

  • Czech description

Classification

  • Type

    O - Miscellaneous

  • CEP classification

    JT - Propulsion, engines and fuels

  • OECD FORD branch

Result continuities

  • Project

  • Continuities

    S - Specificky vyzkum na vysokych skolach

Others

  • Publication year

    2015

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů