Performance of Carbon∕Diesel Fuel Slurries in a Medium-Speed Diesel Engine

The effects of carbon black∕diesel fuel slurries on fuel injection systems and performance of an EMD 567B two-cylinder locomotive research engine when operated on slurry fuel are presented in this paper.

Without extensive modification to the diesel engine fuel transfer system, carbon black slurries cannot be run. Laboratory bench tests revealed clogged fuel filters, worn transfer pump components and frozen injector needle assemblies.

Engine performance while running slurries resulted in reduced thermal efficiency and increased BSFC at rated power output.

Upon engine disassembly, inspection revealed severe ring and liner wear. Severe wear resulted during only 40 hours of engine operation.