Abstract: A valve system for controlling the opening and closing of the intake and exhaust ports of the internal combustion engine's cylinders consists of a shutter valve assembly which opens and closes a row of openings registering with the engine's combustion chamber. The shutter assembly includes a movable shutter ring having a plurality of shutter openings which either register with the intake ports during the intake cycle of the internal combustion engine or with the exhaust ports during the exhaust cycle of the internal combustion engine. A controller regulates the rotation of the shutter ring so that the appropriate ports are in communication with the cylinder for proper intake of fluid and air and the exhaust of fumes from the combustion.

Abstract: An improved internal combustion engine, particularly of the compression ignition, two cycle, aircraft type employing sleeve valves and a modular cylinder and removable cylinder head and retainer. The engine is turbocharged with the turbocharger separated into the compression turbine on one side of a V shaped cylinder array and the drive turbine on the opposite side. The exhaust is discharged through the center of the power output shaft making this engine particularly suited for pusher aircraft applications.

Abstract: An internal combustion engine having a sleeve valve wherein the sleeve valve is the cylinder sleeve of a respective cylinder whereby a very simple reciprocation and oscillation of the sleeve valve may be effected by means of a rotary valve which controls the intake of a fuel-air mixture into the crankcase of the engine. By suppying the fuel-air mixture into the crankcase of the engine and providing each cylinder with transfer passages extending axially through the cylinder and radially adjacent cooling fins of such cylinders, it is possible to effect an isothermal compressing of a fuel-air mixture within the cylinder followed by that fuel mixture being adiabatically compressed by the movement of the respective piston towards the head. The use of a sleeve valve, particularly in association with rotary intake valves, provides for a very simple valving arrangement with a minimum of parts.

Abstract: Adiabatic positive displacement gas cycle machinery is designed with explicit control of the heat flow between the gas and the walls. The control is achieved by maintaining near-laminar flow and a small wall area to volume ratio. The most stable near-laminar flow in a cylinder is an axial vortex because of symmetry, and hence the induction port design should establish an axial vortex and a low velocity. Induction and exhaust port designs to achieve this flow are applied to a vane pump, an adiabatic air compressor, a diesel engine, and two and four stroke Otto cycle engines. The gain in thermal efficiency for these designs can be significant, up to a factor of 2, since the largest inefficiency in nearly all positive displacement machinery is imperfect control of heat flow.

Abstract: A single-sleeve valve engine has narrow quasi-elliptic sleeve motion which improves exhaust and intake valving and permits the conversion of standard engine blocks. The sleeve is thick walled, and is molded of low density material which permits significant rounding of the sleeve apertures for better flow, and grooves and rings for oil control, gas leakage reduction, and mass reduction. The sleeve has an extension which projects above the head and is connected to a half-speed crankshaft by means of a connecting rod. This connecting rod is restrained at an intermediate point by a radius rod to obtain quasi-elliptic sleeve motion which has an amplitude approximately half as great circumferentially as axially. In order to minimize emissions, provision is made for swirl, scavenging, multiple spark plugs, and a near ideal combustion chamber shape.

Abstract: A four cycle internal combustion engine in which cylinders are arranged in pairs. The pistons in each pair of pistons are arranged to operate in tandem.A U shaped arm which is arranged to turn around a center is connected through one set of linkages to a pair of pistons and through a second set of linkages to a crank. The center of rotation of the said U shaped arm is arranged to move around a center in a manner which will change the length of the stroke of the pistons without affecting the compression ratio.A third "air pumping cylinder" is located midway between the two cylinders. This cylinder contains an "air pumping piston".A cam operated rotary valve which is located in the top of the air pumping cylinder will be turned to an intake port during the down strokes of the air pumping piston and will permit air to be drawn in to this cylinder.The rotary valve will be turned to a closed position during the up strokes of the air pumping piston. This will permit air to be compressed.

Abstract: An internal combustion two stroke engine is provided having at least one cylinder within which a piston reciprocates. The engine is joined to a gear box which includes a ring gear. A pair of gears having diameters half that of the ring gear move within the latter. At least one of said pair of gears is connected to a piston by a pin extending between the piston and the periphery of said gear. An additional pair of gears are fixed to respective ones of the first-mentioned gear pair and are operatively joined to a pinion to which a drive shaft is secured. A turbine and filter arrangement is positioned on the side of the engine opposite the gear box whereby exhaust gases from the engine are directed to the turbine to develop power at an output drive shaft joined to the turbine and to filter pollutants from the gases.