Abstract:
A rotary piston engine comprising, a cylindrical rotatable rotor with an output shaft and a plurality of longitudinally extending cylinder-forming bores, each having a slidable piston disposed therein, where the rotor is contained in a housing whose interior contains a cam track that interacts with the pistons to move them back and forth within their respective cylinders in response to rotation of the rotor. A rear end cap on the housing contains an arcuate opening for admitting ambient air into the cylinders on the rear side of the pistons and an arcuate port for delivery the air driven by the rear side of the pistons into a transfer manifold that directs the air to an intake port in the side of the housing where, in response to the angular position of the rotor, the air is admitted to the front side of a piston for compression with injected fuel. A spark plug ignites the compressed fuel-air mixture and an exhaust port in the side of the housing opens to discharge the products of combustion in response to the angular position of the rotor.
Abstract:
A variable-displacement engine comprises an engine block, power shaft and rotating cylinder block. Pistons and connecting rods mounted in the cylinder block connect to a wobble plate having a rotating ring portion and non-rotating ring portion connected to allow relative rotation therebetween while constraining the portions to remain parallel. The wobble plate defines an inclination plane, pivot axis and wobble plate angle θ. A piston control mechanism includes axial lift, control lever supported by the lift and by an axially fixed anchor bearing, and links connecting the control lever to the wobble plate. Axial movement of the lift changes the axial position of the control lever pivot and changes the control lever angle, in turn changing, via the connecting links, the wobble plate angle θ and the axial position of the wobble plate pivot axis. This changes the piston displacement of the engine while maintaining substantially constant compression ratio.
Abstract:
A power plant utilizing a radial rotary engine and incorporating onboard energy storage. The engine is of the type utilized in pre-World War I aircraft, but with certain modifications. The energy storage system exploits the flywheel effect inherent in these engines and optionally also includes auxiliary energy storage in other forms, such as compressed air or electrical. Using a continuously variable transmission enables advantageous use of engine inertia in a coast down mode of driving.
Abstract:
A rotary hydraulic machine has a swashplate adjustable by an actuator. The swashplate has a part cylindrical bearing surface supported by a complimentary bearing surface in the housing and a fluid bearing acts between the surfaces. The fluid is supplied to the fluid bearing by pressure compensated flow control valves to maintain a predetermined flow of fluid. The actuator includes a pair of single acting hydraulic motors secured in the housing and acting on the swashplate at spaced locations. The pistons of the hydraulic motors engage cylindrical pins located on the swashplate to permit a rolling motion between the swashplate and motors as the swashplate is adjusted.
Abstract:
Hydraulic device driving a rotating receiver such as a shaft (1) includes at least one hydraulic motor having axial pistons (7) bearing against a fixed swash-plate (9) via shoes (10), the pistons (7) being arranged in a rotating barrel (5), characterized by the fact that the motor shaft (1) carries a toothed crown wheel (2) with which it is integral whose teeth are engaged by teeth (4) provided on the periphery of the rotating barrel (5) of one or more hydraulic motors (7) arranged around the shaft (1), the axis of axes of the barrel (5) being parallel to the axis of the shaft (1).
Abstract:
An internal combustion barrel engine includes an engine housing with a first and second end. An elongated power shaft is longitudinally disposed in the engine housing and defines a longitudinal axis. A combustion cylinder and a guide cylinder are spaced apart and disposed on a common cylinder axis that is generally parallel to the central axis. The cylinders each have an inner end and an outer end, with the inner ends being closer to each other. The outer end of the combustion cylinder is closed. An intake system is operable to introduce a mixture of air and/or fuel into the combustion cylinder. A track is supported between the inner ends of the cylinders and has an undulating cam surface. The track is moveable such that the portion of the cam surface most directly between the cylinders undulates toward and away from the inner end of the combustion cylinder. A double-ended piston includes a combustion end disposed in the combustion cylinder so as to define a combustion chamber between the combustion end and the closed end of the combustion cylinder. A guide end is disposed in the guide cylinder. A midportion extends between the combustion end and the guide end and is in mechanical communication with the guide surface of the track. A variable compression ratio device is operable to move the track axially towards and away from the inner end of the combustion cylinder so as to adjust the compression ratio. Combustion occurs only in the combustion cylinder and does not occur in the guide cylinder.
Abstract:
In a double-ended barrel engine, a compression cylinder and a combustion cylinder share a common axis, with a combustion piston and a compression piston being interconnected by a connecting rod. The compression end of the engine includes a valve plate assembly with a generally flat valve plate with intake and exhaust passages defined therethrough. An intake flapper valve is disposed on the inner surface of the valve plate and selectively covers the intake passage. An exhaust flapper valve is disposed on the outer surface of the valve plate and selectively covers the exhaust passage. Additional cylinders and pistons may be provided. A compression plenum may be provided in fluid communication with the exhaust passages from one or more compression cylinders, and be in fluid communication with the intake system for the combustion end of the engine. A wastegate may be provided for venting the compression plenum.
Abstract:
A rotary engine, pump or compressor with a framework is provided with intake/exhaust ports in end plates and a rotatably mounted block mounted there-between. In the four cylinder embodiment of this invention, first and second opposing cylinder sets are mounted in the block and each cylinder set includes first and second opposing cylinders with proximal ends and terminal ends with transfer ports disposed to alternately form passageways with the intake and exhaust ports as the cylinders rotate with the block. Each crankset includes a crankpin eccentrically mounted to the piston set to rotate about a crankpin axis, a crankpin gear fixed to the crankpin, an internal gear fixed relative to the first cylinder set, the internal gear having an internal gear configured to mate with the crankpin gear as the crankpin gear rotates within the internal gear, wherein the eccentric rotation of the crankpin offsets the rotation of the crankpin gear within the internal gear to provide approximately linear movement of the piston heads within the first and second cylinders and such that the crankpin also rotates about a crankset axis; and an inward side of the crankpin being eccentrically mounted to an inner crank gear, such that the rotation of the crankpin also rotates the inner crank gear about the crankset axis; wherein the generally linear movement of the circular base aperture of the piston set drives the crankpin gear to rotate around within the internal gear, thereby driving the crankpin to rotate about the crankpin axis; the inner crank gear mating with a driveshaft gear such that the rotation of the inner crank gear rotates the driveshaft. The rotation of the block is provided by any one of a number of different mechanisms.
Abstract:
In order to entirely eliminate pressure drop sensors in a variable displacement hydraulic motor (10), and to change the wobbler angle mechanically rather than hydraulically, the hydraulic motor (10) includes a motor housing (26) having a plurality of hydraulic cylinders (32) and a plurality of hydraulic pistons (34) radially disposed about an axis (36) thereof. A servovalve (40) is provided for controlling the rate and direction of flow of hydraulic fluid to and from the hydraulic cylinders (32), and the wobbler (22) is operatively associated with the hydraulic pistons (34) in a variably angularly positionable manner for varying displacement of the hydraulic motor (10). With this arrangement, the hydraulic motor (10) includes a cam system (22a, 30) for automatically varying the angular positioning of the wobbler (22) relative to the axis (36) of the hydraulic motor (10) responsive to a load-related torque at an output shaft (12) thereof.
Abstract:
A rotary crankless machine in which there is a rotary shaft, a rotary cylinder block, and a stationary housing, all concentrically disposed about a common axis and in which the housing has a central annular manifold block with inlet and outlet passages disposed midway between the ends of the housing. The rotary cylindrical block and shaft are rotatably coupled together and the rotary cylindrical block has a pair of sets of inwardly directed cylinders each of which extends from adjacent the outer wall of the cylinder block inwardly towards the manifold block and disposed so as to be selectively in communication with the inlet and outlet passages of the manifold block as the cylinder block rotates, and in each of which a piston is reciprocated. The longitudinal axis of each cylinder is substantially inclined inwardly with respect to the common axis of the machine and with respect to the transverse plane perpendicular to the axis. Cam means is disposed about the stationary housing in association with each of the pistons to cause reciprocation of the pistons to accompany rotation of the rotary cylinder block and thus rotation of the rotary shaft. Specifically, the machine takes the form of an internal combustion engine having igniting means, such as a spark plug, disposed in the central manifold block between the inlet and outlet passages. In such case, the inlet passage becomes a fuel admission port and the outlet passage an exhaust passage for burned gasses.