Transient tests in a 2.0 liter in-line 4 cylinder downsizing gasoline direct injection engine were conducted under various transient conditions in order to investigate effects of lower rotational inertia of titanium aluminide alloy (TiAl) turbine wheel on engine and turbocharger performances. As a representative result, fast boost pressure build up was achieved in case of TiAl turbocharger compared to Inconel turbocharger. This result was mainly due to lower rotational inertia of TiAl turbine wheel. Engine torque build up response was also improved with TiAl turbocharger even though engine torque response gap between both turbochargers was slightly reduced due to retarded combustion phase. In addition, with advanced ignition timing, fuel consumption became less than that of Inconel turbocharger with similar engine torque response.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Effects of High-Response TiAl Turbine Wheel on Engine Performance under Transient Conditions


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    JSAE/SAE 2015 International Powertrains, Fuels & Lubricants Meeting ; 2015



    Publication date :

    2015-09-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Characteristics of Turbocharger with TiAl Turbine Wheel in a Downsizing GDI Engine

    Bae, Choongsik / Oh, Heechang / Jung, Jinyoung | SAE Technical Papers | 2013


    Characteristics of Turbocharger with TiAl Turbine Wheel in a Downsizing GDI Engine

    Jung, J. / Oh, H. / Bae, C. et al. | British Library Conference Proceedings | 2013



    Engine transient performance or why inertia wheel testing

    Shields, R.N. | Engineering Index Backfile | 1957


    ENGINE TRANSIENT PERFORMANCE OR WHY INERTIA WHEEL TESTING

    SHIELDS, RICHARD N. | SAE Technical Papers | 1957