The emissions of hydrocarbons (HC) and carbon monoxide (CO) from a vehicle can be decreased by obtaining faster warmup of the catalytic converter. An experimental study of the consequences of effectively internally insulating an exhaust pipe has demonstrated (1) a significant increase in converter-inlet gas temperature during warmup, and (2) a lowering of HC and CO emissions on the Federal Test Procedure by about 15% on one particular vehicle. A mathematical model has been developed and verified to predict converter-inlet temperature histories from known exhaust-takedown temperature histories and to quantify the effects of various insulation material properties on the temperature of the gas entering the converter. The dangers of drawing misleading conclusions from tests of exhaust pipe insulation are discussed.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    A Study of Thermal Energy Conservation in Exhaust Pipes


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    1979 Automotive Engineering Congress and Exposition ; 1979



    Erscheinungsdatum :

    1979-02-01




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    A study of thermal energy conservation in exhaust pipes

    Robertson,G.F. / General Motors,US | Kraftfahrwesen | 1979


    Oscillations in exhaust pipes

    Oppitz | Engineering Index Backfile | 1930


    Fixing structure for exhaust pipes

    TAN PENGFEI / ZHU HEBIAO / QIN HAIBIN | Europäisches Patentamt | 2015

    Freier Zugriff

    Acoustic intensity measurements in exhaust pipes

    Lorea,A. / Renzullo,A. / Chiesa,L. et al. | Kraftfahrwesen | 1999


    Thermoelectric Exhaust Energy Recovery with Temperature Control through Heat Pipes

    Martins, J. / Goncalves, L.M. / Antunes, J. et al. | British Library Conference Proceedings | 2011