The Second Annual Heat Engines Contractors Meeting was held April 29 through May 1, 1985, at the Sheraton Lakeview Resort and Conference Center in Morgantown, West Virginia and was sponsored and hosted by the US Department of Energy (DOE), Office of Fossil Energy, Morgantown Energy Technology Center (METC). The annual meeting provides a forum for the exchange of information between DOE contractors and interested parties, and this year's meeting was attended by 220 individuals from industry, academia, national laboratories, and other governmental agencies. The proceedings have been reproduced from camera-ready manuscripts furnished by the authors. They have been refereed, nor have they been extensively edited. Most of the papers deal with gas turbines and diesel engines and fuel slurries and pulverized fuels for these. This usually requires special coal preparation to get low ash fuels. Twenty-eight papers have been entered individually into EDB and ERA. (LTN)