In the past application of alternative fuels was mostly concentrated to special markets - e.g. for ethanol and ethanol blends Brazil or Sweden. Now an increasing sensitivity towards dependency on crude oil significantly enhances the interest in alternative fuels. With spark ignited engines, ethanol and gasoline / ethanol blends are the most promising alternative fuels - besides CNG. The high octane number of ethanol and the resulting excellent knock performance gives significant benefits, especially with highly boosted engines.However, the evaporation characteristics of ethanol result in challenges regarding cold start and oil dilution with GDI application.This paper deals with investigations on a turbocharged DI engine operated on ethanol fuel in order to improve challenges of ethanol fuel, such as oil dilution and cold start.Cold start can be improved by injecting fuel late in the compression stroke (high pressure start) based on a refined engine design and operation strategies.Oil dilution has to be deeply investigated on a transparent engine in order to optimize charge motion, spray pattern and penetration.The paper describes the systematic approach of optimizing a DI /TCI spark ignition engine for ethanol fuel with respect to cold start potential and avoiding oil dilution especially during high load operation.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Ethanol Direct Injection on Turbocharged SI Engines - Potential and Challenges


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Fuerhapter, A. (Autor:in) / Fraidl, G. K. (Autor:in) / Fuchs, H. (Autor:in) / Kapus, P. E. (Autor:in)

    Kongress:

    SAE World Congress & Exhibition ; 2007



    Erscheinungsdatum :

    2007-04-16




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Ethanol Direct Injection on Turbocharged SI Engines - Potential and Challenges

    Kapus, P. E. / Fuerhapter, A. / Fuchs, H. et al. | British Library Conference Proceedings | 2007


    Ethanol direct injection on turbocharged spark ignition engines - potential and challenges

    Kapus,P.E. / Fuerhapter,A. / Fuchs,H. et al. | Kraftfahrwesen | 2007


    2007-01-1408 Ethanol Direct Injection on Turbocharged SI Engines - Potential and Challenges

    Kapus, P. E. / Fuerhapter, A. / Fuchs, H. et al. | British Library Conference Proceedings | 2007


    Spray-guided direct injection - the potential of turbocharged gasoline engines

    Willand,J. / Schintzel,K. / Hoffmeyer,H. et al. | Kraftfahrwesen | 2009


    LPG Fuel Direct Injection for Turbocharged Gasoline Engines

    Dr.-Ing. Ariztegui, Javier / Gutierrez, Jaime / Dipl.-Ing. Fürhapter, Alois et al. | Springer Verlag | 2015