Abstract: A disc valve system for a piston driven internal combustion engine. The disc valve system comprises at least one rotating disc valve and an intermediate seal member. The disc is mounted between a cylinder head manifold having exhaust and intake ports and an engine cylinder housing the piston and defining a combustion chamber. The disc comprising sequencing ports to be brought into periodic communication with the exhaust and intake ports at cyclic intervals of the rotating movement thereof, thereby providing for the exhaust and intake ports to be brought into periodic communication with the combustion chamber. The intermediate seal member is mounting between the disc and the cylinder so as to seal the combustion chamber at a junction of the disc and the cylinder. The intermediate seal member comprising a dynamic seal for contact with the disc and a stationary seal for sealing contact with the engine cylinder.

Abstract: Between the cylinder head and combustion chamber of an internal combustion engine, an intermediate sealing ring. The sealing ring is in sliding contact at its top circular surface with a disc valve rotatively mounted in said cylinder head and at its outer periphery in fixed sealing contact with the inner surface of the engine cylinder of said engine combustion chamber. The purpose of the intermediate seal is to confine the working fluids, being acted upon by the reciprocating motion of the engine piston, across the stationary interface of the engine cylinder and rotative surface of the disc valve.

Abstract: A disc valve system for a piston driven internal combustion engine. The disc valve system comprises at least one rotating disc valve and an intermediate seal member. The disc is mounted between a cylinder head manifold having exhaust and intake ports and an engine cylinder housing the piston and defining a combustion chamber. The disc comprising sequencing ports to be brought into periodic communication with the exhaust and intake ports at cyclic intervals of the rotating movement thereof, thereby providing for the exhaust and intake ports to be brought into periodic communication with the combustion chamber. The intermediate seal member is mounting between the disc and the cylinder so as to seal the combustion chamber at a junction of the disc and the cylinder. The intermediate seal member comprising a dynamic seal for contact with the disc and a stationary seal for sealing contact with the engine cylinder.

Abstract: Between the cylinder head and combustion chamber of an internal combustion engine, an intermediate sealing ring. The sealing ring is in sliding contact at its top circular surface with a disc valve rotatively mounted in said cylinder head and at its outer periphery in fixed sealing contact with the inner surface of the engine cylinder of said engine combustion chamber. The purpose of the intermediate seal is to confine the working fluids, being acted upon by the reciprocating motion of the engine piston, across the stationary interface of the engine cylinder and rotative surface of the disc valve.