INTERNAL COMBUSTION ENGINE

摘要

An internal combustion piston engine has a main combustion chamber supplied with a lean mixture and an auxiliary combustion chamber supplied with a rich mixture. A spark plug ignites a mixture in the auxiliary chamber to project a flame through a torch passage into the main chamber. Walls in the underside of the stationary head of the engine form a flame guide channel diverging from the torch passage toward intake and exhaust valves which are located equidistantly from the torch passage. The torch passage may comprise an elongated slot or a pair of spaced openings.