Commercial vehicles are moving in the direction of improving brake thermal efficiency while also meeting future diesel emission requirements. This study is focused on improving efficiency by replacing the variable geometry turbine (VGT) turbocharger with a high-efficiency fixed geometry turbocharger. Engine-out (EO) NOX emissions are maintained by providing the required amount of exhaust gas recirculation (EGR) using a 48 V motor driven EGR pump downstream of the EGR cooler. This engine is also equipped with cylinder deactivation (CDA) hardware such that the engine can be optimized at low load operation using the combination of the high-efficiency turbocharger, EGR pump and CDA. The exhaust aftertreatment system has been shown to meet 2027 emissions using the baseline engine hardware as it includes a close coupled light-off SCR followed by a downstream SCR system. A parametric analysis for improving engine efficiency is provided using the high-efficiency turbocharger, EGR pump and CDA over the baseline configuration while meeting 2027 emissions.


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    Title :

    Improving Brake Thermal Efficiency Using High-Efficiency Turbo and EGR Pump While Meeting 2027 Emissions


    Additional title:

    Sae Technical Papers



    Conference:

    SAE Powertrains, Fuels & Lubricants Digital Summit ; 2021



    Publication date :

    2021-09-21




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Improving Brake Thermal Efficiency Using High Efficiency Turbo and EGR Pump While Meeting 2027 Emissions

    Bitsis, Daniel Christopher / Matheaus, Andrew / Hopkins, Justin et al. | British Library Conference Proceedings | 2021


    Improving Brake Thermal Efficiency Using High-Efficiency Turbo and EGR Pump While Meeting 2027 Emissions

    Bitsis, Daniel Christopher / Matheaus, Andrew / Hopkins, Justin et al. | British Library Conference Proceedings | 2021


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