Resistively heated metal substrate converters have been developed to improve the cold start emission characteristics of light duty vehicles. Electrically heated metal monoliths have been designed and tested that are able to reach catalytic light-off temperatures (350°C) in less than 30 sec. using a conventional 12 volt electrical system. A solid state controller has been developed that mates with a vehicle's 12 volt system, delivers high currents to the metal monolith, and controls the converter temperature to a given setpoint. Gasoline vehicle emission data are presented that show substantial improvements in cold start HC and CO emissions under both normal ambient and reduced ambient conditions by combining resistance heating and secondary air injection. In these tests Bag 1 HC and CO emissions were reduced by more than 50% versus the same metal monolith converter tested in an unheated configuration.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Recent Developments in Electrically Heated Metal Monoliths


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Congress & Exposition ; 1990



    Publication date :

    1990-02-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Recent developments in electrically heated metal monoliths

    Whittenberger,W.A. / Kubsh,J.E. / Camet,US et al. | Automotive engineering | 1990


    Electrically Heated Metal Substrate Durability

    Kubsh, Joseph E. / Whittenberger, William A. | SAE Technical Papers | 1991


    Electrically heated metal substrate durability

    Whittenberger,W.A. / Kubsh,J.E. | Automotive engineering | 1991


    ELECTRICALLY HEATED WINDSHIELD

    MOUROU JULIEN P / GARG RACHIT / MARTINEZ OMAR RODRIGO GARCIA et al. | European Patent Office | 2023

    Free access

    Electrically-Heated Transparencies

    Emerald Group Publishing | 1963