Method for operating a two stroke reciprocating piston internal combustion engine

The engine cylinder (22) has an outlet valve (3) that supplies exhaust gas (8) to drive a turbocharger (9) this drives a compressor (10) to raise the pressure of air (11) that is fed through inlets (12) that open when the piston (5) is around bottom dead center. The air combines with injected fuel to maintain power at low speed.