Patent ID: 7849824

Claim:
In a two-stroke internal combustion engine, having an engine block defining at least one cylinder with a piston mounted therein for reciprocal motion between a top position and a bottom position, wherein each said cylinder has an intake port and at least one air intake valve coupled to said cylinder, to allow air into the top of said cylinder, and at least one exhaust port at a lower position above said bottom position of said piston; and having a blower arranged to force air into each said cylinder via each said intake valve as said piston moves around said bottom position, said blower not supplying enough pressure to keep each said intake valve open during upward motion of said piston, such that during upward motion of said piston, compression occurs within said cylinder, and such that during downward motion of said piston said blower forces air into each said cylinder via each said intake valve once each said exhaust port is uncovered by said downward motion, and out of each said cylinder via each said exhaust port; the improvement wherein each said intake valve is positively actuated by controlled air pressure differentials, wherein the air pressure differentials are controlled by an electronic control unit operating a solenoid switch valve to apply said pressure differentials according to desired cylinder valve timing.