Commercial vehicles require fast aftertreatment heat-up to move the SCR catalyst into the most efficient temperature range to meet upcoming NOX regulations while minimizing CO2. The focus of this paper is to identify the technology levers when used independently and also together for the purpose of NOX and CO2 reduction toward achieving 2027 emissions levels while remaining CO2 neutral or better. A series of independent levers including cylinder deactivation, LO-SCR, electric aftertreatment heating and fuel burner technologies were explored. All fell short for meeting the 2027 CARB transient emission targets when used independently. However, the combinations of two of these levers were shown to approach the goal of transient emissions with one configuration meeting the requirement. Finally, the combination of three independent levers were shown to achieve 40% margin for meeting 2027 transient NOx emissions while remaining CO2 neutral. These independent levers and combinations were also quantified for meeting the new Low Load Cycle. This paper shows which combinations of technologies meets both the transient emission cycles and low load cycles for NOx with adequate margin while also saving CO2.


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    Title :

    Technology Levers for Meeting 2027 NOx and CO2 Regulations


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    WCX SAE World Congress Experience ; 2023



    Publication date :

    2023-04-11




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Nr. 2027

    DataCite | 1884



    Standard brake levers

    Leeds, Pulaski | Engineering Index Backfile | 1897


    THROTTLE CONTROL LEVERS

    SERIEYS JULIEN / DELBRUEL DIDIER | European Patent Office | 2023

    Free access

    THROTTLE CONTROL LEVERS

    SERIEYS JULIEN / DELBRUEL DIDIER | European Patent Office | 2023

    Free access