Laboratory studies have indicated that closed-loop air/fuel control system characteristics have an effect on the performance of three-way catalysts (TWC). For this paper, this effect was examined on various production automobiles. Studies were conducted on three vehicles which demonstrated an observable range of air-fuel control strategies ranging from tight to wide air-fuel perturbation. To classify control system performances, data in the form of lambda (λ) traces was collected using an NGK AF-100 air-fuel ratio meter during operation of the 1975 U.S. Federal Test Procedure (FTP). Emissions performance on these three vehicles during the hot stabilized phase of the FTP cycle and for subsequent sweep test evaluations are described for two three way catalysts having different engine aging histories.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    VEHICLE CONTROL STRATEGIES EFFECT ON CATALYST PERFORMANCE


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    1988 SAE International Fall Fuels and Lubricants Meeting and Exhibition ; 1988



    Publication date :

    1988-10-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Vehicle control strategies effect on catalyst performance

    Adomaitis,J.R. / Heck,R.M. / Engelhard,Environmental Catalyst Div.,US | Automotive engineering | 1988


    Examination of different control strategies of heavy-vehicle performance

    Palkovics, L. / El-Gindy, M. | Tema Archive | 1993


    Examination of Different Control Strategies of Heavy-Vehicle Performance

    Palkovics, L. / El-Gindy, M. / American Society of Mechanical Engineers; Dynamic Systems and Control Division et al. | British Library Conference Proceedings | 1993


    Catalyst Strategies for Meeting Super-Ultra-Low-Emissions-Vehicle Standards

    Morris, D. / Lafyatis, D. S. / Twigg, M. V. et al. | SAE Technical Papers | 1999


    CATALYST HEATING CONTROL METHOD FOR HYBRID VEHICLE AND CATALYST HEATING CONTROL DEVICE FOR HYBRID VEHICLE

    KHIGUTI SINSUKE / AKIYAMA KHIDEKATSU / KOBAYASI ADZUSA et al. | European Patent Office | 2020

    Free access