Air fuel engine

Air fuel engine

Alternative charging method for engine with pressurized valved c

Combination internal combustion and steam engine

Combination internal combustion and steam engine

Combined internal combustion and hot gas engine

Combined internal combustion and steam engine

Combined internal combustion and steam engine

Combined internal combustion and steam engine

Combustion engine with steam powered piston assist

Energy conserving engine

Energy recovery system for large motor vehicles

Energy storing engine

Fluid engine

Fluid handling elements and combustion engines

High efficiency integrated heat engine (HEIHE)

Internal combustion and steam engine

Internal combustion engine

Internal combustion engine

Internal combustion engine with steam expansion stroke