The article reports the results of continuing research into the application of oil/water emulsions as a diesel fuel. In order to determine the properties of emulsions produced by the available emulsification devices, tests have been undertaken on fuel oils having viscosities of approximately 1000, 1500, and 3500 sec. Redwood No. 1 at 100 deg F respectively for a range of oil/water concentrations from 0 to 16 per cent water. The devices used vary in their respective methods of water/oil mixing. (a) An homogeniser where admixture occurs due to a combination of crushing and shearing. (b) An emulsifier using mechanical cavitation and shear. (c) An homogeniser in which oil and water are pressurised and ejected in the form of an emulsion. To date, a full range of tests for two of the above oils, (900 sec. and 3500 sec.) have been completed using devices outlined in (a) and (b) above. The intermediate oil of approximately 1500 sec. will be tested in the near future, in parallel with tests on the department's medium speed diesel engine facility. The following parameters associated with oil/water emulsions were considered of interest: viscosity; specific gravity; water content; cetane number; particle size and distribution; photomicrographs of emulsions; and bulk modulus. Note: It is not practicable to test lighter diesel oil in the same way since the time during which meaningful measurements could be taken before separation occurs is too short. The complete paper details conclusions on these parameters, supported by numerous micrographic illustrations of particle distribution in oil and charts of droplet size distribution. The results show that emulsified fuels can provide a means of reducing the specific fuel consumption of a diesel engine without the penalty of increasing the exhaust emissions. Indeed, for a given set of circumstances the exhaust gas emissions can be substantially reduced.

  • Availability:
  • Supplemental Notes:
    • A full paper was presented earlier this year to the North East Coast Institution of Engineers and Shipbuilders.
  • Corporate Authors:

    IPC Industrial Press Limited

    Dorset House, Stamford Street
    London SE1 9LU,   England 
  • Authors:
    • Thorp, I
    • Armstrong, G
    • Katsoulakos, P
  • Publication Date: 1980-3

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Filing Info

  • Accession Number: 00312207
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 26 1980 12:00AM