Locomotive engine performance depends among other factors on turbocharger efficiency and operating range. The turbocharger operating range can be constrained at high pressure ratio by flow induced instabilities, namely surge, in the centrifugal compressor. The resulting loss of flow results in degraded engine performance, higher exhaust emissions, high turbocharger vibration and can lead to mechanical damage on the compressor and adjoining air handling equipment. While surge avoidance methods are available to restrict the operating point to lie well within a static surge-avoid-line of the compressor, these methods can unnecessarily restrict the operating range, resulting in loss of overall performance and fuel efficiency. Surge detection and control is a closed loop strategy where a surge avoidance system starts acting if the onset of surge is detected. Use of such a strategy allows running at reduced surge margin to permit higher pressure ratio across the compressor, at potentially higher compressor efficiency, and yields increased power output from the engine at reduced emissions and improved fuel efficiency. This paper discusses a systematic approach adopted to detect precursors to the surge phenomenon, based on experiments on full-scale turbochargers and the use of a real-time wavelet algorithm to detect precursors.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Detection of surge precursors in locomotive turbocharger


    Contributors:
    Menon, S. (author) / Furman, A. (author) / Krok, M. (author)


    Publication date :

    2007


    Size :

    5 Seiten, 6 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Incipient Surge Detection in Automotive Turbocharger Compressors

    Marelli, Silvia / Silvestri, Paolo / Usai, Vittorio et al. | British Library Conference Proceedings | 2019


    Incipient Surge Detection in Automotive Turbocharger Compressors

    Capobianco, Massimo / Silvestri, Paolo / Marelli, Silvia et al. | SAE Technical Papers | 2019


    Study on Algorithm for Turbocharger Surge Detection and Its Application

    Chen, Hongmin / Ji, Jianbo | SAE Technical Papers | 2008


    Study on algorithm for turbocharger surge detection and its application

    Chen,H. / Ji,J. / China Gas Turbine Establishment,CN et al. | Automotive engineering | 2008


    Surge Control for Centrifugal Compressor of Turbocharger

    Gu, R. / Yashiro, M. | British Library Online Contents | 2005