The emission standards compliance is really becoming effective generally for all the class of engines and particularly for two-stroke SI. While for larger capacity and more valuable applications, such as scooters, snowmobiles, marine engines, the state of the art appears consolidated with the use of direct fuel injection systems, the engines dedicated to very light and simple applications need a different approach in terms of simplicity and cost. Aiming in this direction a system including a self - sustained air injection system in the exhaust and oxidation catalysts was prepared. The influence of the main design parameters governing the system performances and their mathematical relationships were experimentally studied with the aid of a DOE (Design of Experiment) technique methodology.The combination of the different geometrical and mechanical characteristics does not seems critical in order to define a robust solution but it appears instead very difficult with such system to get a good matching all over the engine utilization range. In this sense the solution can be optimized only for well-defined running conditions. According to the DOE results, the application of the system to a light moped is presented and analyzed with particular reference to the emission reduction capability.Even if the solution appears able to cope with the required future most stringent standards for this class, still maintaining unchanged its intrinsic simplicity, low cost, easy servicing, the results are not generally transferable to any kind of applications especially characterized by high output engines operating over a broad range.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Appraisal of Secondary Air Injection for Emission Reduction in Small 2T SI Engines


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Caponi, David (Autor:in) / Nuti, Marco (Autor:in)

    Kongress:

    SAE 2000 World Congress ; 2000



    Erscheinungsdatum :

    06.03.2000




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Appraisal of secondary air injection for emission reduction in small 2T SI engines

    Caponi,D. / Nuti,M. / Piaggio,IT | Kraftfahrwesen | 2000


    Appraisal of Secondary Air Injection for Emission Reduction in Small 2T SI Engines

    Caponi, D. / Nuti, M. / Society of Automotive Engineers | British Library Conference Proceedings | 2000


    Pulsed Secondary Air Injection System for Emission Reduction in Small Generator Sets

    Saito, Ryo / Yasoshina, Sayaka | SAE Technical Papers | 2014


    SCIP simplified direct injection for low emission small two-stroke engines

    Duret,P. / Lavy,J. / Venturi,S. et al. | Kraftfahrwesen | 1999


    Concepts for Emission Reduction in Small Capacity Four Stroke Engines

    Kirchberger, R. / Tromayer, J. / Eichlseder, H. | British Library Conference Proceedings | 2011