Patent ID: 8967115
Filing Date: 2015-03-03
Classification: F02M,Y02T

Abstract:
1. A 4 stroke poppet valved piston supercharged or naturally aspirated internal combustion engine with separate intake and exhaust valves with substantially and continuously separate exhaust and intake tracts leading separately to the atmosphere, whose exhaust tract is of a length and continuity where no substantial fresh air would flow backwards down said exhaust tract into the combustion chamber as a result of common pressure waves, wherein the fuel is forcibly injected from within the exhaust tract into said combustion chamber thru said open exhaust valve port into said combustion chamber and cylinder for the next cycle of combustion thru said exhaust valve of said combustion chamber or said cylinder from a distance from said exhaust valve equal to less than 10 diameters of the circle equivalent two dimensional sectional area of said exhaust valve tract and face opening junction, during the moments while said exhaust valve is open wherein: a. near the end of the piston's exhaust cycle upstroke, the intake valve or valves remain closed, and said exhaust valves remain open, while exhaust gases are driven thru said exhaust valves, into the exhaust tract as schematically represented by bubbles in ( b. upon said piston's exhaust cycle top dead center, said intake valve remain closed and said exhaust valve remains open and said exhaust gases are present in the near areas of an exhaust tract ( c. during said piston's subsequent intake downstroke, while said intake valves remain closed and said exhaust valves remain open, fuel is injected thru said exhaust valve or valves into said cylinder and said combustion chamber represented schematically by injector ( d. subsequently during said piston's intake downstroke, said inlet valve or valves are opened at substantially at the same time as said exhaust valves are closed ( e. subsequently near intake bottom dead center said inlet valve or valves close, followed by compression upstroke, compression top dead center, combustion and combustion downstroke, f. near the bottom dead center of said piston's combustion down stroke said exhaust valves open and the exhaust upstroke begins and the cycle repeats at step a above.