For global environmental protection and resource conservation, Honda has developed a low precious-metal perovskite catalyst system in response to LEV-II, which achieves both low emissions and a reduction in the amount of precious metal used. The amount of precious metals used in the catalyst, per vehicle, is expected to be 50 % less than in conventional systems. This system is comprised of an air fuel ratio control system based on Honda's unique high-accuracy air-fuel control system, combined with a perovskite catalyst jointly developed with the US Company CSI. This system's performance is expected to reach the levels required by LEV-II regulations. Perovskite is a mix-metal oxide material that is widely used in general applications other than catalysts. However, it has not been widely used in automobile catalysts, because, in comparison with precious-metal catalysts, both the heat resistance and conversion efficiency during the warm-up process is reduced. In the new system, CSI's MPC (mixed phase catalyst) technology and Honda's quick warm-up system are combined, improving both heat resistance and conversion efficiency during warm-up, and thereby making it possible to achieve performance that is comparable to that of a precious-metal catalyst. With the use of this system, a 2.4L inline 4-cylinder engine vehicle having 2 g of precious metal is expected to achieve LEV-II regulation levels.


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    Titel :

    Development of a low precious-metal automotive perovskite catalytic system for LEV-II


    Beteiligte:
    Matsuzono, Y. (Autor:in) / Sakanushi, M. (Autor:in) / Kitagawa, H. (Autor:in)


    Erscheinungsdatum :

    2003


    Format / Umfang :

    7 Seiten, 16 Bilder, 8 Quellen




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Development of a low precious-metal automotive Perovskite catalytic system for LEV-II

    Matsuzono,Y. / Sakanushi,M. / Kitagawa,H. et al. | Kraftfahrwesen | 2003


    Development of a Low Precious-metal Automotive Perovskite Catalytic System for LEV-II

    Kitagawa, Hiroshi / Sakanushi, Masahiro / Matsuzono, Yoshiaki | SAE Technical Papers | 2003


    2003-01-0814 Development of a Low Precious-meta Automotive Perovskite Catalytic System for LEV-II

    Matsuzono, Y. / Sakanush, M. / Kitagawa, H. et al. | British Library Conference Proceedings | 2003


    Reclaiming of Precious Metals from Automotive Catalytic Converters

    Musco, Sebastian P. | SAE Technical Papers | 1982


    Reclaiming of Precious Metals from Automotive Catalytic Converters

    Musco,S.P. / Gemini Industries,Santa Ana,US | Kraftfahrwesen | 1982