The effect of soaking temperature on exhaust emissions has been studied using a variety of automobiles representing three different emission control levels and testing them at ambients of 20°C down to -30°C(60°F to -22°F).It was found that emissions of the three gaseous pollutants demonstrated a mild power relationship with ambient (soaking) temperatures. All regulated pollutants and fuel consumption were higher at -30°C than at 20°C: hydrocarbons (HC) - 3.5 to 9.2 times; carbon monoxide (CO) - 2.4 to 6.4 times; oxides of nitrogen (NOx) - only 1.1 to 1.4 times; and fuel consumption 1.2 to 1.8 times higher. Analysis of the data has indicated that HC and CO emissions from the cold start phase of the Federal test were the most sensitive to soaking temperature. With NOx emissions the soaking temperature sensitivity was fairly constant throughout the three phases of the Federal test.The data also indicate that the temperature sensitivity of both fuel economy and, to a lesser extent, emissions is a function of inertia weight.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Effect of Cold Weather on Motor Vehicle Emissions and Fuel Economy


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    1978 Automotive Engineering Congress and Exposition ; 1978



    Publication date :

    1978-02-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Effect of Cold Weather on Motor Vehicle Emissions and Fuel Economy

    Ostrouchov,N. / Fish.and Environ.Canada,Mobil Sources Div.,Ottawa,CA | Automotive engineering | 1978


    Effect of cold weather on motor vehicle emissions and fuel consumption

    Ostrouchov,N. / Environment Canada,Mobil Sources Div.,CA | Automotive engineering | 1979



    Motor Vehicle Fuel Economy

    Stone, Richard | TIBKAT | 1989


    Light Duty Vehicle CO Emissions During Cold Weather

    Rubenstein, Gary S. / Verrelli, Leonard D. / Austin, Thomas C. et al. | SAE Technical Papers | 1983