Integrated precombustion chamber for internal combustion engines

Claim 1

In combination with an internal combustion engine wherein a reciprocating piston moves in a cylinder, and wherein a cylinder head cooperates with the cylinder and piston to define a combustion chamber, the improvement comprising: means extending from the crown of the piston into the combustion chamber; means extending from the cylinder head into the combustion chamber; said means extending from the piston and said means extending from the cylinder head cooperating to define at least one precombustion chamber and at least one secondary combustion chamber interior to the combustion chamber; at least one aperture for providing communication between the precombustion chamber and the secondary combustion chamber; said means extending from the piston comprising two generally elongated projections in spaced apart relationship, each of said projections having two ends; said means extending from the cylinder head comprising two generally elongated projections in spaced apart relationship, each of said projections having two ends; one of said projections of the piston being in sealing juxtaposition to one of said projections of the cylinder head, and the other of said projections being in sealing juxtaposition to the other of said projections of the cylinder head when the piston is proximate top dead center of its stroke, thereby defining said precombustion chamber and said secondary combustion chamber; at least one end of one of said projections of the piston being spaced inwardly from the periphery of the piston and at least one end of said projection of the cylinder head adjacent said one end of the piston being spaced from the wall of the cylinder bore, thereby defining said aperture between said adjacent ends of said projections and the wall of the cylinder.