It has been difficult to obtain stable experimental slurries of coal or solvent-refined coal for testing in diesel engines. Attempts to burn the 40 percent by weight raw coal-fuel oil slurry were hampered from the outset. First the transfer pump would not deliver the slurry to the injection pump. This problem was overcome by raising the slurry storage tank to increase the positive head on the pump inlet. With the engine running on the slurry blow-by of gases into the crank case increased considerably; the engine ran erratically; and when operating under its own power produced approximately 20 percent of what was expected. Thus, the test was ended after one hour of operation instead of ten hours as was the case with the 20 and 32 percent slurries. The immediate loss of power is thought to be a result of poor penetration, dispersion, and atomization of the injected fuel. A request to revise the scope of the work so that an investigation of this power loss can replace the work required to operate on the 40 percent slurries has been submitted. Inspection of this test engine indicates wear occurs at an excessive rate, although thermodynamic changes are not drastic with 20 and 32 percent by weight coal in the slurries.

  • Supplemental Notes:
    • Quarterly Report.
  • Corporate Authors:

    Virginia Polytechnic Institute and State University, Blacksburg

    Department of Agronomy
    Blacksburg, VA  United States  24061
  • Authors:
    • Marshall, H
  • Publication Date: 1979-12

Media Info

  • Pagination: 3 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00319498
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Contract Numbers: ET-78-S01-3288
  • Files: TRIS
  • Created Date: Oct 8 1980 12:00AM