A new catalyzed hydrocarbon (HC) trap control system has been developed to reduce HC emission at cold engine start. The HC trap function changes according to its temperature, so it is important to optimize its temperature profile. To realize the best profile, the engine system was optimized with a thin wall exhaust tube, a thin wall HC trap and a new engine control, which controls ignition timing without engine stability deterioration. In a LA-4 mode test with some trial HC traps, the results showed good performance which met ULEV/SULEV standard.


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    Titel :

    A New Catalyzed Hydrocarbon Trap Control System for ULEV/SULEV Standard


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    SAE 2003 World Congress & Exhibition ; 2003



    Erscheinungsdatum :

    03.03.2003




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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