Gasoline Direct Injection (GDI) engine has a significant fuel economy improvement over the traditional port fuel injection engine. The tradeoff for this benefit is excessive exhaust emissions, especially NOx. Three-way-catalyst (TWC) is inefficient to treat NOx emission during lean operation. So Lean NOx Trap (LNT) is invented for NOx aftertreatment and it has both storage mode and purge mode. Research on modeling and control of LNT has been conducted, but it is still lack of the essential information on the temperature effect. This research focuses on the impact of trap temperature on LNT storage time, purge time and fuel economy. The mechanism of temperature effect on LNT is investigated at first. Then the temperature control strategy based on fuel economy improvement is proposed.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Temperature Impact on Modeling and Control of Lean NOx Trap


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE 2003 World Congress & Exhibition ; 2003



    Publication date :

    2003-03-03




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Temperature impact on modeling and control of lean NOx trap

    Ye,Z. / Wayne State Univ.,Detroit,US | Automotive engineering | 2003


    2003-01-1163 Temperature Impact on Modeling and Control of Lean NOx Trap

    Ye, Z. / Society of Automotive Engineers | British Library Conference Proceedings | 2003


    Lean NOx Trap Modeling for Vehicle Systems Simulations

    Daw, Charles / Conklin, James / Chakravarthy, Kalyana et al. | SAE | 2010


    Lean NOx trap modeling for vehicle systems simulations

    Gao,Z. / Chakravarthy,K. / Daw,C. et al. | Automotive engineering | 2010


    Spray Modeling for Lean NOx Trap Aftertreatment System Design

    McCarthy, Jr., James / Mohanta, Lokanath / Kulkarni, Milind S | SAE | 2009