RESEARCH ON TWO-STROKE DIESEL ENGINES AT VERY LOW RATING AND OPERATIONAL RESULTS FROM VLCC AT REDUCED SPEED

As a result of the world fuel crisis of 1974-1975, it has become necessary to operate VLCCs in service at the lowest possible costs. Analysis of operating costs has shown that, as far as tankers are concerned, a remarkable economy can be achieved by reducing the ship's speed and consequently consumption of fuel and lubricating oil. The paper reports the results of an experimental programme with the aim of optimizing engine behavior at low outputs. Following an initial investigation of the operating parameters on a testbed engine, data relating to engine performance at reduce output has been obtained from four 250,000-dwt tankers in service. Although the results so far are in a relatively short term, it is considered that the optimising modifications devised after the workshop tests provide a satisfactory measure against cylinder wear and corrosion. Order from BSRA as No. 40,980.

  • Supplemental Notes:
    • Paper presented at 12th International Congress on Combustion Engines (CIMAC), held Tokyo, 1977.
  • Corporate Authors:

    Conseil International des Machines a Combustion

    10 avenue Hoche
    75008 Paris,   France 
  • Authors:
    • Cotti, E
    • Manganano, F
    • Prefumo, M
  • Publication Date: 1977

Media Info

  • Pagination: p. 693

Subject/Index Terms

Filing Info

  • Accession Number: 00194243
  • Record Type: Publication
  • Source Agency: British Ship Research Association
  • Report/Paper Numbers: Volume A, Paper A-16
  • Files: TRIS
  • Created Date: Jun 13 1979 12:00AM