Correct-a-flow radius turnaround anti-reversionary venturi pipes

Claim 1

In an internal combustion engine: a high velocity, high volume trapping, filtering, and controlling mechanical device producing a coaxial cylindrical air curtain causing an approximately 180 degree radius turnaround of reversionary combustion gasses from the induction charge of four stroke engines, the engine and head of said engine including the charge mixing device, a sealed induction pipe articulating the combustion chamber with said mixing device, said induction pipe providing a pathway for the fuel charge to enter through the head down into the combustion chamber from the mixing device and vice versa when intake exhaust valve overlap allows a hot exhaust reversion stream to move the opposite way back up through the intake valve, said device comprising, in combination: a small flared pipe; a larger longer flared pipe sized to fit within the intake port with a small clearance from the intake runner wall of said cylinder head; attaching points circumferentially spaced apart joining the short flared and long flared pipes together; said small flared pipe being received within the large flared pipe in such a manner as to create a flow path for redirecting the reversionary flow by approximately 180 degrees; and mounting legs circumferentially spaced apart on the longer pipe.