A bench engine test has been developed which reproduces the type of turbocharger failure observed in a wide range of gasoline engined vehicles operating on commercially available API SF oils. These failures have also been reproduced in a 15000 km chassis dynamometer test developed by Audi. Initial bench engine tests showed that high temperatures alone do not cause deposit related failures. Following tests on a range of turbocharged cars a two part bench engine test was developed which discriminated between oils of different formulation. This test consisted of an initial 150 hour conditioning period run under steady state conditions followed by a cycle of wide open throttle and hot soak repeated 200 times. The combination of parameters found to be crucial in reproducing the field failures were engine oil temperature, turbocharger housing temperature, blowby, NOx and oil consumption.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    The development of a severe turbocharger bench engine test


    Additional title:

    Die Entwicklung eines harten Motorpruefstandversuches fuer Turbolader


    Contributors:
    Toft, G.B. (author) / Coy, R.C. (author) / Krumm, H. (author) / Muenninghoff, H.W. (author)

    Published in:

    SAE-Papers ; Mar ; 1-13


    Publication date :

    1988


    Size :

    13 Seiten, 9 Bilder, 7 Tabellen, 5 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    The development of a severe turbocharger bench engine test

    Toft,G.B. / Coy,R.C. / Krumm,H. et al. | Automotive engineering | 1988


    The Development of a Severe Turbocharger Bench Engine Test

    Toft, G.B. / Krumm, H. / Muennighoff, H.W. et al. | SAE Technical Papers | 1988


    A severe turbocharger bench engine test for lubricant evaluation

    Toft,G.B. / Mainwaring,R. / Shell Research,Thornton Research Centre,GB | Automotive engineering | 1990


    Test Bench for Turbocharger Groups Characterization

    Lujan, J. M. / Bermudez, V. / Serrano, J. R. et al. | British Library Conference Proceedings | 2002


    Test Bench for Turbocharger Groups Characterization

    Cervelló, C. / Luján, J. M. / Serrano, J. R. et al. | SAE Technical Papers | 2002