DEVELOPMENT OF CARBON SLURRY FUELS FOR TRANSPORTATION (HYBRID FUELS-PHASE II)

Slurry fuels of various forms of solids in diesel fuel were developed and evaluated for their relative potential as fuel for diesel engines. Thirteen test fuels with different solids concerntrations were formulated using eight different materials. A variety of properties were examined including ash content, sulfur content, particle size distribution, and rheological properties. Attempts were made to determine the effects of these variations on these fuel properties on injection, atomization, and comubstion processes. The injection and atomization characteristics (transient diesel sprays) of the test fuels were examined in a spray bomb in which a nitrogen atmosphere was maintained at high pressure and temperature, 4.2 MPa and 480 deg C, respectively. The diagnostics of the sprays included high-speed movies and high-resolution still photographs. The slurries were found to affect the global spray characteristics of penetration rate and come angle and the particle-size distribution within the spray. In general, the drop size increased, the penetration rate increased and the cone angle decreased with the slurries as compared to a baseline diesel fuel. The slurries were also tested in a single-cylinder CLR engine in both direct-injection and prechamber configurations. The data included the normal performance parameters as well as heat release rates and emissions. In most cases, the slurries performed very much like the baseline fuel. The combustion data indicated that a large fraction (90% or more) of the solids were burning in the engine. It appears that the prechamber engine configuration is more tolerant of the slurries than the direct-injection configuration.

  • Corporate Authors:

    Southwest Research Institute

    6220 Culebra Road, P.O. Drawer 28510
    San Antonio, TX  United States  78228-0510
  • Authors:
    • Ryan III, T W
    • DODGE, L G
  • Publication Date: 1984-5

Media Info

  • Pagination: 174 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00391440
  • Record Type: Publication
  • Source Agency: Energy Research Abstracts
  • Report/Paper Numbers: DOE/NASA-0263-1
  • Contract Numbers: AI01-81CS50006
  • Files: TRIS
  • Created Date: Jan 30 1985 12:00AM