Device for producing strong swirls in air-fuel mixture within combustion chamber for internal combustion engine

Abstract From the Canadian patent

This invention relates to a novel internal combustion engine. The engine comprises a piston, a cylinder block and a cylinder head which together define a single combustion chamber. An intake and an exhaust port are provided which communicate with the chamber with a main intake passage for introducing the air-fuel mixture into the intake port and a throttle valve in the intake passage. A spark plug is provided at a predetermined position within the chamber. A sub-intake valve is provided in the form of a sub-piston reciprocable with a cylindrical bore in the head and a sub-intake passage opens unto an inner peripheral wall of the cylindrical bore. An injection passage communicates with the …