Nearly 80% of all emissions from an automobile during the Federal Test Procedure (FTP) occur within the first two minutes of the test because the engine is running rich and the catalyst has not reached peak operating temperature. Research at Compact Membrane Systems, Inc. have proven the benefit of using the engine's natural vacuum to drive a membrane module to supply Oxygen Enriched Air (OEA) during initial start up. The benefit of the OEA has shown to decrease emissions of carbon monoxide (CO) and hydrocarbons (HC). In addition, OEA helps to maintain the combustion flame stability when the engine is operated in a lean mode or at a low engine speed. There is evidence that OEA may also account for to a shorter warmer up time for the catalyst.A 3 inch diameter by 9 inch long module, (7.5 cm dia. × 23 cm) with a small regenerative blower, was installed to an accessory port on the intake manifold of a truck engine. A 30 second idle period was run on the engine and exhaust emissions were recorded. When the engine was supplied 23% and 25% OEA, a reduction of 25-50% in HCs and CO were realized with no measurable loss in power.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Oxygen Enriching Membranes for Reduced Cold Start Emissions


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Congress & Exposition ; 1999



    Publication date :

    1999-03-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Oxygen enriching membranes for reduced cold start emissions

    Callaghan,K. / Nemser,S. / Johanson,W. et al. | Automotive engineering | 1999


    Oxygen Enriching Membranes for Reduced Cold Start Emissions

    Callaghan, K. / Nemser, S. / Johanson, W. et al. | British Library Conference Proceedings | 1998


    Fuel heater promises reduced cold start smoke emissions

    Chellini,R. / Tecnocarbur,IT | Automotive engineering | 1991


    Reduced cold start emissions through use of electric engine heaters

    Ydstedt,A. / Bjorklund,S. / Hoeglund,P.G. | Automotive engineering | 1996


    Reducing Cold-Start Emissions

    Esser, K. | Online Contents | 1995