The Modern Compound Engine

This report discusses possible improvements in compression ignition engine performance characteristics by greater utilization of the excess energy of exhaust gases of a typical engine. It also considers complications involved in this increased utilization as well as resulting differences in cost.

Various direct and indirect methods of achieving results in these areas are suggested. The almost necessary use of variable geometry in the turbine unit if any real progress is to be made and the requirements involved in its use are also discussed.