The purpose of this paper is to describe and summarize the results of
the Coal-Fueled Diesel Engine Development Program, sponsored by the U.
S. Department of Energy, Morgantown Energy Technology Center. The resu
lts of the program indicate that diesel engines can be designed to ope
rate reliably on coal-water slurries. The engine must be modified to i
nclude hard-wear resistant rings and liners. The injection system desi
gn must be modified to accommodate the slurry and to incorporate hard
materials for wear prevention.