Measurements have been made of the emissions from a prototype three-way catalyst automobile, during normal and simulated malfunction driving conditions. Four ceramic-supported catalyst compositions were investigated, ranging from Rh through two mixtures of Rh-Pt to Pt. Driving conditions included cyclic and cruise modes. Under normal operating conditions no HCN was detected. Under rich malfunction conditions, HCN was generally observed, even in the absence of a catalyst. In some cases, catalysts appeared to remove HCN from the exhaust gas; in others they increased its level. The highest emission rate for HCN was observed for the Rh catalyst, about 40 mg/km at 64 kph cruise.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Hydrogen Cyanide Emissions from Three-Way Catalyst Prototypes under Malfunctioning Conditions


    Additional title:

    Sae Technical Papers


    Contributors:
    Holt, E. L. (author) / Keirns, M. H. (author)

    Conference:

    1978 Automotive Engineering Congress and Exposition ; 1978



    Publication date :

    1978-02-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Exhaust Emissions from Malfunctioning Three-Way Catalyst-Equipped Automobiles

    Urban, Charles M. / Garbe, Robert J. | SAE Technical Papers | 1980


    Exhaust Emission from Malfunctioning Three-Way Catalyst-Equipped Automobiles

    Urban,C.M. / Garbe,R.J. / Southwest Res.Inst.,US et al. | Automotive engineering | 1980


    Emissions from Modern Passenger Cars with Malfunctioning Emissions Controls

    Ross, Marc / Wenzel, Tom | SAE Technical Papers | 1996


    Emissions from modern passenger cars with malfunctioning emissions controls

    Wenzel,T. / Ross,M. / Lawrence Berkeley National Lab.,US et al. | Automotive engineering | 1996


    Regulated and Unregulated Exhaust Emissions from Malfunctioning Automobiles

    Urban, Charles M. / Garbe, Robert J. | SAE Technical Papers | 1979