PROPER maintenance and engine design can do much to reduce exhaust-gas hydrocarbons, the authors say. This conclusion is based on mass spectrometer analyses of engine exhaust from 163 passenger cars, most of them customer-owned, and 8 public-transit coaches, operated at idle, part throttle, and simulated deceleration.Mixture ratio proved the most important engine-fuel variable affecting hydrocarbon losses at idle; thus the V-8 engine, idling best on a leaner mixture, has lowest hydrocarbon losses.Manifold vacuum had the most effect during simulated deceleration. Since this depends on engine speed, automatic transmissions and the new lower rear-axle ratios are helpful.None of the engine-fuel variables tested had any effect at part throttle. Type of fuel and engine type (gasoline, diesel, or LPC) showed no significant influence on hydrocarbon content throughout the tests.Discussion of this paper begins on p. 618.PROPER maintenance and engine design can do much to reduce exhaust-gas hydrocarbons, the authors say. This conclusion is based on mass spectrometer analyses of engine exhaust from 163 passenger cars, most of them customer-owned, and 8 public-transit coaches, operated at idle, part throttle, and simulated deceleration.Mixture ratio proved the most important engine-fuel variable affecting hydrocarbon losses at idle; thus the V-8 engine, idling best on a leaner mixture, has lowest hydrocarbon losses.Manifold vacuum had the most effect during simulated deceleration. Since this depends on engine speed, automatic transmissions and the new lower rear-axle ratios are helpful.None of the engine-fuel variables tested had any effect at part throttle. Type of fuel and engine type (gasoline, diesel, or LPC) showed no significant influence on hydrocarbon content throughout the tests.Discussion of this paper begins on p. 618.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Some Effects of Engine-Fuel Variables On Exhaust-Gas Hydrocarbon Content


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Rounds, F. G. (Autor:in) / Nebel, G. J. (Autor:in) / Bennett, P. A. (Autor:in)

    Kongress:

    Pre-1964 SAE Technical Papers ; 1906



    Erscheinungsdatum :

    1955-01-01




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Some effects of engine-fuel variables on exhaust gas hydrocarbon content

    Rounds, F.G. / Bennett, P.A. / Nebel, G.J. | Engineering Index Backfile | 1955


    Why Engine Variables Affect Exhaust Hydrocarbon Emission

    Daniel, Wayne A. | SAE Technical Papers | 1970


    Piston and Ring Variables Affect Exhaust Hydrocarbon Emissions

    Wentworth, J. T. | SAE Technical Papers | 1968



    Hydrocarbon Emissions and Reactivity as Functions of Fuel and Engine Variables

    Wimmer, D. B. / Alquist, H. E. / McReynolds, L. A. | SAE Technical Papers | 1965