US Patent 8387570 Coke burning engine

A coke burning engine is described wherein hot coke fuel chunks are first compressed with air and reacted therewith to form a carbon monoxide rich gas, during a compression cycle time period. Next these primary reacted gases are mixed into and burned with secondary air during a blowdown cycle time period. These fully reacted gases are expanded though an expander engine whose power output drives the air compressor, and yields a net useful engine power output.