Abstract: An improved drive mechanism for rotary valves of the type used in internal combustion engines indexes the valves in selected attitudes of rotation to align the valve passage with an inlet or exhaust port and hold the valve in alignment for a selectable duration of crankshaft rotation. In like fashion, the valves are also indexed to close off an inlet or exhaust port for a selected duration of crankshaft rotation. Flow into and out of an engine cylinder is improved because each valve is held for a longer period of time in a full open position. while compression and power strokes are made more efficient by the gas seal maintained while the valves are positioned to close off the intake and exhaust ports.

Abstract: Valves for an internal combustion engine are mounted for rocking movements about an axis perpendicular to a cylinder axis of the engine, and define passage portions extending perpendicular to their rocking axes so that they move between positions in which their passage portions form part of venturi-shaped inlet and exhaust passages, and positions in which they obturate the inlet and exhaust passages. The valve members may be rocked by a camshaft and mechanical linkages, or by actuators under computer control.

Abstract: A rotary valve is rotatable about an axis and has a port extending crosswise of the axis of rotation. A drive unit drives the rotary valve to oscillate about 180.degree. in such a way that the rotary valve rotates in one direction into and out of the position of establishing communication between the valve port and a cylinder head port communicating with a combustion chamber.

Abstract: An improved intake and exhaust valve system for internal combustion engines is disclosed. The system includes a primary valve control mechanism for sequentially opening and closing the intake and exhaust valves, and a secondary control system for modifying the operation of the primary mechanism. The primary valve control mechanism includes cylindrical cams for opening and closing the intake and exhaust valves. The secondary control system modifies the operation of the primary valve control system to vary the duration, extent and onset of valve opening and closing. The secondary control system includes a control plate, at least one rocker mechanism mounted to sequentially engage and disengage the control plate, and a driver mounted between the rocker mechanism and at least one of the cylindrical cams of the primary control system so that, when the control plate engages the rocker mechanism, the driver mechanism engages one of the cylindrical cams to modify the operation of the primary control system.

Abstract: An internal combustion engine is provided with intake and exhaust gas valving by a single rotary valve mounted within a jacketed housng atop the cylinder. The piston has a shaft extending up through the housing, the shaft defining multiple spirals wound in opposite directions for engagement by a pair of slipring drivers. Such drivers alternately engage sliprings carried by the valve for incrementally rotating the valve in a single direction of rotation as the piston reciprocates. The valve has at least one recess for providing communication between intake and exhaust gas passages as it rotates.

Abstract: Improvements in a fuel injected, internal combustion engine having a first passage for flow of air into the combustion chamber and exit of exhaust gases from the combustion chamber and a single poppet valve opened and closed in timed relation to rotation of the engine's crank shaft to control flow of gases through such first passage, an inlet air passage and an exhaust gas passage each communicating with the first passage and one another and a diverter valve movable in timed relation to operation of the poppet valve selectively to direct, in one position, air into the combustion chamber through the inlet passage and, in another position, exit of exhaust gases through the outlet passage wherein the improvement comprises a separate small passageway in parallel flow relation with the intake air into the combustion chamber which directs supercharged air into the combustion chamber when the diverter valve is in the exhaust position to purge the engine.

Abstract: A rotary valve system for a motor and the like includes a flow conduit and rotary valve means interposed in the flow conduit. Intermittent sealing means are provided for preventing flow through the flow conduit, comprising a sealing surface intermittently positionable in stationary, sealing relationship across the conduit. Means are also provided for moving the sealing surface into such stationary sealing relationship with the flow conduit, and out of sealing relationship with the flow conduit in a manner correlating with the operation of the rotary valve means, to facilitate sealing as the valve operates.

Abstract: A valve assembly for an internal combustion engine having a cylinder head including a combustion chamber and an induction passage terminating at a valve seat defining an inlet port to the combustion chamber in the combustion side of the cylinder head, includes a valve head fitting over and engaging sealingly the valve seat. Mounting means disposed inside of the combustion chamber in the combustion side of the cylinder head connects swingably the valve member to the valve head between a closed position in sealing engagement with the valve seat and an open position substantially out of alignment with the valve seat. A valve stem is reciprocatively journaled in a stem guide bore with one end of the valve stem extending from the cylinder head and its other end connected to the valve head. The axis of the induction passage is substantially parallel to the axis of the combustion chamber to further facilitate an increased volumetric efficiency.

Abstract: An articulated, spring-controlled intake valve, for use in controlling induction flow through an intake port of an induction passage in an internal combustion engine, includes a valve head and a separate valve stem connected together by a hinge member with one end thereof pivotally secured to the valve stem and its opposite end fixed to the valve head with one end of a flexure spring sandwiched therebetween, the opposite end of the flexure spring being secured by a clamp member to an internal wall defining a portion of the induction passage.

Abstract: A cylinder with cross inlet and exhaust ports contains a combination piston and rod having on its piston end a piston head or face and slidably attached sealing sleeve, and its other end is rotatable via a rod bearing attached to a crankshaft. The rotational motion of the rod with the crankshaft imparts an undulating movement to the piston head during its stroke motion and, in unison with the slidably attached sealing sleeve, effects a sequence wherein the exhaust ports open ahead of the inlet and close before the inlet closes.

Abstract: A rotary valve system for a motor and the like includes a flow conduit and rotary valve means interposed in the flow conduit. Intermittent sealing means are provided for preventing flow through the flow conduit, comprising a sealing surface intermittently positionable in stationary, sealing relationship across the conduit. Means are also provided for moving the sealing surface into such stationary sealing relationship with the flow conduit, and out of sealing relationship with the flow conduit in a manner correlating with the operation of the rotary valve means, to facilitate sealing as the valve operates.

Abstract: A rotary valve system for a motor and the like includes a flow conduit and rotary valve means interposed in the flow conduit. Intermittent sealing means are provided for preventing flow through the flow conduit, comprising a sealing surface intermittently positionable in stationary, sealing relationship across the conduit. Means are also provided for moving the sealing surface into such stationary sealing relationship with the flow conduit, and out of sealing relationship with the flow conduit in a manner correlating with the operation of the rotary valve means, to facilitate sealing as the valve operates.