USE of residual fuels in medium- and highspeed diesel engines is discussed here. The objective is to improve overall economy of operation by using less costly residual fuels to get satisfactory performance.
Problems resulting from use of these residual fuels are discussed in light of economic effect on short-term performance of 4-stroke and 2-stroke diesel engines.
Two types of 2-fuel systems, the diesel fuel selector system and the diesel fuel blender system, have been developed for utilizing residual fuels in medium-speed engines.