In an internal combustion engine, first and second rotating members, one for the intake valve and one for the exhaust valve rotate next to the outside of an engine cylinder on opposite sides thereof when driven by a drive gear attached to the end of the engine's crankshaft. Each rotating member may include a ring gear having a valve port or aperture near its perimeter that cyclically aligns with a corresponding valve port formed through the cylinder wall near the top of the cylinder. A method of controlling valve timing comprises the steps of causing the rotating member containing the second valve port to periodically align in synchronism with the first port to control the passage of an air/fuel mixture and exhaust gases through the combustion cycles of the engine.

In an internal combustion engine, first and second rotating members, one for the intake valve and one for the exhaust valve rotate next to the outside of an engine cylinder on opposite sides thereof when driven by a drive gear attached to the end of the engine's crankshaft. Each rotating member may include a ring gear having a valve port or aperture near its perimeter that cyclically aligns with a corresponding valve port formed through the cylinder wall near the top of the cylinder. A method of controlling valve timing comprises the steps of causing the rotating member containing the second valve port to periodically align in synchronism with the first port to control the passage of an air/fuel mixture and exhaust gases through the combustion cycles of the engine.

In an internal combustion engine, first and second rotating members, one for the intake valve and one for the exhaust valve rotate next to the outside of an engine cylinder on opposite sides thereof when driven by a drive gear attached to the end of the engine's crankshaft. Each rotating member may include a ring gear having a valve port or aperture near its perimeter that cyclically aligns with a corresponding valve port formed through the cylinder wall near the top of the cylinder. A method of controlling valve timing comprises the steps of causing the rotating member containing the second valve port to periodically align in synchronism with the first port to control the passage of an air/fuel mixture and exhaust gases through the combustion cycles of the engine.

In an internal combustion engine, first and second rotating members, one for the intake valve and one for the exhaust valve rotate next to the outside of an engine cylinder on opposite sides thereof when driven by a drive gear attached to the end of the engine's crankshaft. Each rotating member may include a ring gear having a valve port or aperture near its perimeter that cyclically aligns with a corresponding valve port formed through the cylinder wall near the top of the cylinder. A method of controlling valve timing comprises the steps of causing the rotating member containing the second valve port to periodically align in synchronism with the first port to control the passage of an air/fuel mixture and exhaust gases through the combustion cycles of the engine.

The invention discloses a two-stroke internal combustion engine having an engine housing with a crankcase in which a crankshaft is connected to a piston moving in a cylinder, an exhaust port leading from the cylinder space and opening at the level of the lower dead center of the crankshaft, the exhaust port is configured to be closed by a piston when the crankshaft is in its top dead center position, characterized in that it further has a rotary disk with an opening or recess on a part of its circumference, or with a protrusion on a part of its circumference, the rotary disk extending with its circumference into the exhaust port so that the exhaust port is completely closable by the rotary disk.

The invention discloses a two-stroke internal combustion engine having an engine housing with a crankcase in which a crankshaft is connected to a piston moving in a cylinder, an exhaust port leading from the cylinder space and opening at the level of the lower dead center of the crankshaft, the exhaust port is configured to be closed by a piston when the crankshaft is in its top dead center position, characterized in that it further has a rotary disk with an opening or recess on a part of its circumference, or with a protrusion on a part of its circumference, the rotary disk extending with its circumference into the exhaust port so that the exhaust port is completely closable by the rotary disk.

A valve system/method suitable for an internal combustion engine (ICE), compressor pump, vacuum pump, and/or reciprocating mechanical device is disclosed. The system/method is optimized for construction of a four-stroke ICE. The rudimentary system incorporates an intake engine block cover (IEC) and exhaust engine block cover (EEC) that enclose an intake rotary valve disc (IVD) and exhaust rotary valve disc (EVD) that control intake/exhaust flow through a respective intake rotary valve port (IVP) and an exhaust rotary valve port (EVP) into and out of a combustion cylinder that provides power to a piston and crankshaft. An intake multi-staged valve (IMV) and exhaust multi-staged valve (EMV) provide intake and exhaust flow control for the IVD/IVP and EVD/EVP. An enhanced system may include a variety of intake/exhaust port seals (IPS/EPS), forced induction/discharge (FIN), centrifugal advance (CAD), and/or cooling channel spool (ICS/ECS).

A valve system/method suitable for an internal combustion engine (ICE), compressor pump, vacuum pump, and/or reciprocating mechanical device is disclosed. The system/method is optimized for construction of a four-stroke ICE. The rudimentary system incorporates an intake engine block cover (IEC) and exhaust engine block cover (EEC) that enclose an intake rotary valve disc (IVD) and exhaust rotary valve disc (EVD) that control intake/exhaust flow through a respective intake rotary valve port (IVP) and an exhaust rotary valve port (EVP) into and out of a combustion cylinder that provides power to a piston and crankshaft. An intake multi-staged valve (IMV) and exhaust multi-staged valve (EMV) provide intake and exhaust flow control for the IVD/IVP and EVD/EVP. An enhanced system may include a variety of intake/exhaust port seals (IPS/EPS), forced induction/discharge (FIN), centrifugal advance (CAD), and/or cooling channel spool (ICS/ECS).

An internal combustion rotary engine comprises: at least one combustion chamber; a flywheel; at least one piston provided in said flywheel; two or more barrier elements; a circumferential volume between the outer surface of said flywheel, the housing of said flywheel, and two or more barrier elements; wherein some parts of the circumferential volume are also delimited by one or more pistons, and wherein the barrier elements are adapted to be positioned within said circumferential volume thereby to essentially block the flow of air therein, and to be positioned such as to at least partially unblock the flow of air therein, thereby allowing said air flow to take place, and to be positioned such as to be totally open to promote the piston to move between circumferential area and wherein the timing of movement of the barrier elements is dependent from the rotation of said flywheel and/or the location of said piston(s); and wherein the barrier element that is in contact with a portion of pressurized air is adapted to move without the need for sealing while the piston is blocking the pressurized air that is needed for combustion inside the combustion chamber, wherein the piston partitions the pressurized air into two portions, one of which is locked in the combustion chamber while the other is located between the front of the piston and the barrier element.

Apparatus for controlling valve timing in an internal combustion engine locates a first valve port in a first side of the engine cylinder and a second valve port in a second side of the engine cylinder. A first rotating valve disc and a second rotating valve disc are respectively disposed next to the first and second valve port. Each rotating valve disc includes a valve port. Each disc rotates in synchronism with the crankshaft to align its' port with the respective first and second valve ports. A variety of intake devices coupled to the first rotating valve disc control intake air flow into the engine cylinder, and a variety of exhaust devices coupled to the second rotating valve disc control exhaust gas flow from the engine cylinder.