The Atkinson cycle engine is basically an engine permitting the strokes to be different lengths for improved light loads fuel economies. Variable compression ratio is the technology to adjust internal combustion engine cylinder compression ratio to increase fuel efficiency while under varying loads. The paper presents a new design of a variable compression ratio engine that also permits an expansion ratio that may differ from the compression ratio therefore generating an Atkinson cycle effect. The stroke ratio and the ratio of maximum to minimum in-cylinder volumes may change with load and speed to provide the best fuel conversion efficiency. The variable ratio of maximum to minimum in-cylinder volumes also improves the full load power output of the engine. Results of performance simulations are proposed for a gasoline engine 2 Litres, in-line four, turbocharged and direct injection showings significant fuel savings during light and medium loads operation as well as improvement of full load output and fuel efficiency.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Exploring the Advantages of Atkinson Effects in Variable Compression Ratio Turbo GDI Engines


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Boretti, Alberto (Autor:in) / Scalzo, Joseph (Autor:in)

    Kongress:

    SAE 2011 World Congress & Exhibition ; 2011



    Erscheinungsdatum :

    2011-04-12




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Exploring the Advantages of Atkinson Effects in Variable Compression Ratio Turbo GDI Engines

    Boretti, A. / Scalzo, J. / Society of Automotive Engineers | British Library Conference Proceedings | 2011


    Exploring the Advantages of Variable Compression Ratio in Internal Combustion Engines by Using Engine Performance Simulations

    Boretti, A. / Scalzo, J. / Society of Automotive Engineers | British Library Conference Proceedings | 2011



    Variable Compression Ratio Engines

    Galli, Luis Antonio / Bittencourt, Marco Lucio / De Bortoli Cassiani, Maurilio et al. | SAE Technical Papers | 2009


    Atkinson cycle sparh ignition engines

    Saunders,R.S. / Univ.of Sheffield,Dept.of Mech.Engng.,GB | Kraftfahrwesen | 1984