Two Oldsmobiles with 5.7 L diesel engines and one with a 4.3 L diesel engine were tested to determine the effect of the low temperature properties of diesel fuel on operability (cold-start and warm-up driveability). Startability limits ranged from −18°C to −24°C and were unaffected by cetane quality of the fuel within the range of 39 to 50 cetane numbers. With untreated fuels, the cars would not operate when the fuel temperature fell below the cloud point of the fuel because wax crystals precipitated from the fuel and plugged the fuel tank filter. Low temperature operability was extended as much as 10°C by the use of fuel flow improver additives and a modified vehicle fuel system.


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    Title :

    Cold Weather Fuel Requirements of Oldsmobile Diesels


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    1980 Automotive Engineering Congress and Exposition ; 1980



    Publication date :

    1980-02-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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