Abstract: A rotary valve internal combustion engine has a piston connected to a crankshaft and reciprocatable in a cylinder, a combustion chamber being defined in part by the piston, and a rotary valve rotatable in a valve housing fixed relative to the cylinder, the rotary valve having a valve body containing a volume defining, in part, the combustion chamber and further having a port giving, during rotation of the valve, fluid communication successively to and from the combustion chamber via inlet and exhaust ports.

Abstract: An internal combustion engine includes a rotary valve such that said rotary valve serves as an output shaft for said engine.

Abstract: An exhaust control device for a vehicle engine includes an exhaust control valve capable of changing the opening area of an exhaust passage. The exhaust control valve is disposed in exhaust passage forming means so as to be able to change a bent-internal side partial passage sectional area of the passage sectional area of an exhaust passage. Specifically the exhaust control valve is disposed at a bent portion of the exhaust passage that is closest to an exhaust valve port. With this configuration, the exhaust flow rate can be controlled satisfactorily.

Abstract: The various embodiments of the present invention provide a rotary valve system for piston engines. The valve system for piston engines comprises an intake rotary valve, an exhaust rotary valve arranged in conjunction with the intake rotary valve, a crankshaft gear and a plurality of spindle gears. The plurality of spindle gears are connected to at least one of the intake rotary valve and the exhaust rotary valve to transfer a rotary force from the crankshaft gear to at-least one of the intake rotary valves and exhaust rotary valves such that intake rotary valve and the exhaust rotary valve are set in motion. The valve system provides for changing the volume and timing for entering the fuel and the air into the engine and exiting smoke from the engine. The rotary valve system decreases shake of the engine and performs the required performance of the engine within specified range.

Abstract: An internal combustion engine includes a rotary valve such that said rotary valve serves as an output shaft for said engine.

Abstract: A valve apparatus for an internal combustion engine, the valve apparatus including: a main part having a wall section defining a valve cavity extending along a longitudinal length of the main part and an opening located in the wall section of the main part, the opening flow connected to the combustion chamber; an outer part configured and arranged so as to be reciprocally located in the valve cavity, the outer part having a wall section defining an inner passage extending along a longitudinal axis thereof; an inner part having a first end situated outside of the cavity and a second end situated within the cavity and the inner passage of the outer part, the inner part having a wall section defining an inner passage, a first opening at the first end, and one or more openings in that part of the walled section which is situated within the cavity.

Abstract: A cylinder head 12 showing a guideway in which is located a rotatable valve 10, 12 comprising a fluid port operable to effect fluid communication between a cylinder and a fulid manifold in the guideway, whereby rotation of the valve effects alignment of the fluid port with the combustion chamber of a cylinder 4 to enable fluid flow between the valve 10, 12 and a cylinder 4, and wherein the cylinder head 2 further comprises a seal 22 which, in use, is movable from a first, non-sealing position in which the seal 22 is biased away from the valve 10, 12, and a second, sealing position in which the seal 22 is biased onto the valve by gaseous pressure from within a cylinder 4.

Abstract: An internal four-cycle combustion engine with at least one piston that rotates in relation to a hub that acts as a rotary valve is provided. The rotary valve hub includes passageways to provide for fuel/air intake, exhaust, and coolant as well as an ignition devise and services all cylinders that revolve around it. Each piston compresses inward toward the hub and is actuated by its own gear driven crankshaft that is driven by a gear affixed to the hub. The crankshaft gear having one half the radius of the hub gear, will rotate twice as it circles the hub, providing four cycles of piston motion.

Abstract: A rotating shaft and a drive shaft are used in an air intake apparatus for an internal combustion engine. At one end portion of the rotating shaft and the drive shaft a sphere portion and a projection portion are formed, and another end portion of the rotating shaft and the drive shaft a cup portion and a faucet portion are formed. The sphere portion is inserted to the cup portion and further the projection portion is engaged with the faucet portion, thereby a universal joint is formed. Since a connection structure between the rotating shaft and the drive shaft is constituted with few component elements, a cost reduction in the air intake apparatus for the internal combustion engine can be improved.

Abstract: An engine comprises an engine block having at least one combustion chamber and a rotary valve rotatably mounted on top of the engine block. The rotary valve includes an intake passage for diverting air into the combustion chamber and an exhaust passage for exhausting combustion by products from the combustion chamber. The engine further includes a head surrounding the rotary valve. Seals surrounding the combustion chamber seat against the bottom surface of the rotary valve. Seals on the circumference of the rotary valve seat against the head. The seals are arranged to provide a double seal for the combustion chamber during the initial portion of the power stroke. The rotary valve may further include a pressure relief valve to reduce pressure and temperature in the combustion chamber during at least a portion of the power cycle.

Abstract: A device comprising a cylindrical sliding gate (3), transversely arranged relative to the air conduit(s) (2) in a bore (4) arranged in a cylinder head (1) movable between a first position closing (P2) the conduit (2) and a second position opening (P1) the conduit (2) by the action of an actuating arrangement (16, 14; 17; 18, 19).