Traditionally, the cold operability of diesel vehicles has in very low temperatures been guaranteed by high-quality special fuels. This means increasing costs and decreasing yields from crude oil for an oil refiner. With the increase in use of diesel fuel, its properties are altered. The most significant alteration is the increase of specific gravity and viscosity. The use of de-waxing processes and flow improvers is also increased. Cold tests were carried out on six diesel-powered vehicles using Finnish diesel fuels. The cold operability of a conventional fuel system is within the CFPP range. In a well-designed system, the lower operability limit is some 6 deg C below the CFPP. Using extra equipment to warm the fuel, it is possible to lower the cold operability limit 10-15 deg C below the CFPP. In this case, the limit is reached because of fuel pumpability.

  • Supplemental Notes:
    • Twentieth FISITA Congress, (SAE P-143), The Automotive Future, Volume 1, Austria, 6-11 May 1984.
  • Corporate Authors:

    Society of Automotive Engineers (SAE)

    400 Commonwealth Drive
    Warrendale, PA  United States  15096
  • Authors:
    • Lundberg, M
  • Publication Date: 1984-5

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00392469
  • Record Type: Publication
  • Source Agency: National Highway Traffic Safety Administration
  • Report/Paper Numbers: SAE 845012, HS-037 425
  • Files: HSL, USDOT
  • Created Date: Feb 28 1985 12:00AM