A method for heating a catalyst includes maintaining engine speed at a high rpm when the engine is started. The high rpm is maintained even if the driver shifts the transmission out of neutral. Engine speed is lowered when there is an indication that the driver wishes to drive off, such as the driver releasing the brake pedal. Maintaining the high rpm during the time between shifting the transmission out of neutral and providing an indication that drive off is desired contributes to additional catalyst warm up. The high rpm may be disabled if the catalyst temperature is sufficiently high or if the vehicle is parked on a slope, for example.


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    Title :

    IMPROVEMENTS IN CONTROLLING INTERNAL COMBUSTION ENGINE EMISSIONS


    Additional title:

    VERBESSERTE KONTROLLE DER EMISSIONEN BEI EINER BRENNKRAFTMASCHINE
    PERFECTIONNEMENTS APPORTÉS À LA LUTTE CONTRE LES ÉMISSIONS D'UN MOTEUR À COMBUSTION INTERNE


    Contributors:
    JERGER ROB (author) / WICKS NICK (author) / HAYDEN DAVID (author) / JARVIS SIMON (author)

    Publication date :

    2018-03-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / F02D CONTROLLING COMBUSTION ENGINES , Steuern oder Regeln von Brennkraftmaschinen



    Controlling internal combustion engine emissions

    JERGER ROB / HAYDEN DAVID / JARVIS SIMON et al. | European Patent Office | 2017

    Free access




    METHOD FOR CONTROLLING INTERNAL COMBUSTION ENGINE, AND DEVICE FOR CONTROLLING INTERNAL COMBUSTION ENGINE

    OGATA MAKOTO / OOTANI MASAYUKI / TERAI YOSHIHIRO et al. | European Patent Office | 2021

    Free access