The gasoline injection system used as an auxiliary during cold start of ethanol-fuelled engines has been improved to reduce exhaust emissions levels. In substitution to the conventional system, which introduces gasoline in the throttle body through a calibrated pipe in a hole, an electronic fuel injector and other peripheral components have been used to inject gasoline. Experiments were carried out in an ethanol-fuelled vehicle powered by a 1.0 liter engine to measure regulated exhaust pollutant gases concentrations, to compare the modified system to the conventional one. The tests were according to FTP-75 test cycle, which simulates a typical urban travel including cold start and acceleration during warm-up. The results showed that the concentrations of aldehyde, hydrocarbon, carbon monoxide and oxides of nitrogen emissions were simultaneously reduced when the modified system was used.


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    Titel :

    Optimized Cold Start Auxiliary System for Emissions Reduction in Ethanol-Fuelled Engines


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    SAE Powertrain & Fluid Systems Conference & Exhibition ; 2002



    Erscheinungsdatum :

    21.10.2002




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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