Flexible supply gas routing for gas compressors

Engine usable as a power source or pump

System and method for modifying an automobile engine for use as a gas compressor

Method and device for supplying a compressor in an internal combustion engine with compressed air

On demand, stored, positive pressurized air injection for internal combustion engines combustion chambers

Monocylindrical hybrid two-cycle engine, compressor and pump, and method of operation

Single-ended barrel engine with double-ended, double roller pistons

Engine based kinetic energy recovery system for vehicles

Single-ended barrel engine with double-ended, double roller pistons