A coal-fueled diesel engine holds the promise of a rugged, modular heat engine that uses cheap, abundant fuel. Economic studies have indicated attractive returns at moderate diesel fuel prices. The compositions of coal-water fuels are being expanded to cover the major coal sources. Combustion has been developed at 1000 rpm with mechanical and electronic fuel injection. Dual fuel operation can run the engine over the load range. Erosion of fuel nozzles has been controlled with diamond compacts. Wear of piston rings and cylinder liners can be controlled with tungsten carbide coatings. Emission measurements show higher particulates and SO2 and lower NOx, CO, and HC. Particulate and SO2 control measures are being investigated.

Issue Section:
Research Papers
Topics:
Coal, Diesel engines, Transportation systems, Fuels, Particulate matter, Coatings, Combustion, Cylinders, Diamonds, Diesel, Emissions, Engines, Erosion, Heat engines, Nitrogen oxides, Nozzles, Piston rings, Stress, Tungsten, Water, Wear
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Copyright © 1990
 by The American Society of Mechanical Engineers
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