INVESTIGATIONS INTO THE EFFECT OF FUEL ON TEMPERATURES AND HEAT FLUX IN A SLOW RUNNING DIESEL PLANT
The main object of these investigations was to compare the effect of different fuel oils on the combustion, heat transfer, and thermal load on piston and cylinder. One of the test fuels was a large sample collected from a ship which had had problems with this fuel. The other test fuel was the ship's normal bunker, which had an analysis generally recognized as good. The main differences between the elementary analyses of the two fuels, which may have affected combustions, were the content of emulsified water and sludge and the acidity of the troublesome oil. The physical effect of the poorer fuel was a carbon rich, second phase combustion giving increased heat radiation. The carbon particles were probably larger, and they tended to stay in orbit in the swirl for a longer period with increased risk of reaching the cylinder wall and penetrating the piston ring zone. This work showed support for the theory that water significantly effects thermal load and thermal instability by promoting the deposit of carbon on the nozzle which impairs the atomizing effect of the nozzles and producing larger droplets. No stringent proof was found to connect the characteristics of the poor fuel with acidity.
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Corporate Authors:
Scandinavian Ship Technical Society
Radhusgt 8, Box 162
Oslo, Norway -
Authors:
- Langballe, M
- Publication Date: 1971
Media Info
- Features: Figures; References; Tables;
- Pagination: p. 3-15
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Serial:
- European Shipbuilding
- Volume: XX
- Issue Number: 4
- Publisher: Scandinavian Ship Technical Society
Subject/Index Terms
- TRT Terms: Combustion; Diesel engines; Diesel fuels; Equipment tests; Heat transfer
- Old TRIS Terms: Diesel testing
- Subject Areas: Energy; Marine Transportation; Vehicles and Equipment;
Filing Info
- Accession Number: 00032663
- Record Type: Publication
- Source Agency: United States Merchant Marine Academy
- Files: TRIS
- Created Date: Apr 21 1972 12:00AM