With the introduction of stringent particulate number (PN) limits and real driving emission (RDE) requirements, gasoline particulate filters (GPFs) have been widely adopted in Europe and China. GPFs can be coated with different amounts of three-way catalyst (TWC) coating. Some applications use large amounts of washcoat (>100g/L) whereas some don’t use at all. Pressure drop (DP) and PN filtration efficiency (FE) are the top two design criteria. It is important to understand how various coating technologies can be applied to GPF technologies for optimized FE/DP performance. To study filter and coating interaction, a matrix of coated GPFs was prepared and tested for lab DP and vehicle PN based FE. The matrix includes samples with a wide range of washcoat loadings (WCLs), differing coating technologies that target more coating inside GPF filter walls (Tech A) or more on the surface of filter walls (Tech B), and GPF technologies with high and low mean pore size (MPS). Scanning electron microscope (SEM) is used to analyze the microstructure of coated filter walls and coating distribution for a better understanding of filter performance data. In general, DP and FE of coated filters are found to increase with WCL. Filters with lower MPS have higher DP and FE. Tech A has lower DP and FE when WCL is relatively low. Tech B is found to help to improve filtration performance, especially initial FE at fresh status.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Coated Gasoline Particulate Filter Technology Development to Meet China6 PN Regulation


    Additional title:

    Sae Technical Papers


    Contributors:
    zhao, Depeng (author) / Yang, Dongxia (author) / li, Gaojian (author) / harle, Gavin (author) / Wang, Guodong (author) / Lu, Heng (author) / Chen, Jian (author) / He, Suhao (author) / Xia, Wenzheng (author) / Yuan, Xinbo (author)

    Conference:

    WCX SAE World Congress Experience ; 2020



    Publication date :

    2020-04-14




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Coated Gasoline Particulate Filter Technology Development to Meet China6 PN Regulation

    Chen, Jian / He, Suhao / Xia, Wenzheng et al. | British Library Conference Proceedings | 2020


    Coated Gasoline Particulate Filter Technology Development to Meet China6 PN Regulation

    Chen, Jian / He, Suhao / Xia, Wenzheng et al. | British Library Conference Proceedings | 2020


    The Best Choice of Gasoline/Diesel Particulate Filter to Meet Future Particulate Matter Regulation

    Seo, J.M. / Park, W.S. / Lee, M.J. et al. | British Library Conference Proceedings | 2012


    The Best Choice of Gasoline/Diesel Particulate Filter to Meet Future Particulate Matter Regulation

    Seo, Jung Min / Lee, Myung Jong / Park, Won Soon | SAE Technical Papers | 2012


    Development of High Performance Coated Gasoline Particulate Filter

    Morita, Tomoko / Hashimoto, Masanori / Seki, Chiaki et al. | British Library Conference Proceedings | 2023