Apparatus and associated methods relate to a modular rotary engine with a rotating valve shaft assembly. The rotating valve shaft assembly controls the timing of operations that alternately load and seal compressed air in a plurality of adjacent combustion chambers and alternately unload the high-temperature, high-pressure combustion gases from the adjacent combustion chambers into one or more expansion modules. The rotating valve shaft assembly includes at least two rotating valve shafts. Each rotating valve shaft includes ports that alternately open to allow a flow of compressed air from the compression module into a combustion chamber; and close to allow the injection of fuel into the combustion chamber and ignition of the compressed air and fuel mixture. The rotation of the drive shaft of the rotary engine is powered by the expansion of expanding combustion gases that turns the expansion rotor.

A rotary internal combustion engine includes an arcuate compression chamber, an arcuate expansion chamber, an output shaft, and a piston coupled to the output shaft for movement through the arcuate compression chamber and the arcuate expansion chamber. The piston has a leading end, a trailing end, an inlet valve that is located at the leading end of the piston for receiving a compressible fluid from the compression chamber and an outlet valve that is located at the trailing end of the piston for expelling a combustion gas into the arcuate expansion chamber.

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.

The engine comprises an outer shell in the shape of a fixed ring with two lids, an internal rotor with an inlaid central shaft and bearings. On the inner surface of the shell, inlet, compression, explosion and escape chambers are positioned. The internal rotor is endowed with drive axle having a cylindrical body endowed with radial slots which house at least one vane pressed radially against a shell by spring. The outer shell of the Otto engine has a carburetor and a feed duct of the air-fuel mixture. At the start of the explosion chamber the spark plug is positioned. At the end of the explosion chamber an escape chamber with an escape duct is positioned. The outer shell of the Diesel engine has a butterfly valve and an air feed duct. At the start of the explosion chamber a fuel injection spout is positioned, and at the end of the explosion chamber an escape chamber with an escape duct is positioned.

A combustion system and apparatus is disclosed. The apparatus employs a groove-shaped combustion area and a trap composed of a lid and a door. The lid is disposed in communication with the trap and is configured to slide within and over the groove-shaped combustion area during use. Combustion occurs within the groove-shaped combustion area, pushing the trap, whereby a rotor is forced to rotate, conveying power from a combustible material to perform work. As a corollary, the apparatus may be configured for use in the field of air compression and air decompression. Multiple groove-shaped combustion areas may be configured in a parallel or series orientation. Gas compression/decompression only utilizes a single groove, whereas combustion preferably utilizes a compression groove and a combustion groove.

A positive-displacement pump or turbine includes a rotor casing that defines a rotor chamber having a contoured wall that forms a plurality of lobes. A rotor is positioned within the rotor chamber, and has an outer rotor surface spaced inward from the contoured wall at the lobes. Vanes are mounted around the outer rotor surface, and structures associated with the vanes follow a track or groove defined by the rotor chamber as the rotor spins, thereby forcing the vanes radially inwardly and outwardly to follow a curvature of the contoured wall.

A cam rotary engine power system of internal combustion type, making use of the cam and a plurality of cam followers to form cam mechanisms, and forming a plurality of circumferential distributed sealing working chambers with the inner-cavity-member, the external-rotating-surface-member and the end-cover-member. The volume of those chambers change with the relative rotation of the cam and the cam followers, in which the intake, compression, power and exhaust processes of the Otto cycle are completed by valve coordination. The chemical energy produced by gas combustion is directly converted into the mechanical energy of the rotor in the form of fixed axis rotation. The power system does not set the crankshaft of piston engine, and the high pressure gas directly drives the rotor to rotate and output power. The structure of this power system is relatively simple and its parameters can be adjusted in a wide range.

A combustion system and apparatus is disclosed. The apparatus employs a groove-shaped combustion area and a trap composed of a lid and a door. The lid is disposed in communication with the trap and is configured to slide within and over the groove-shaped combustion area during use. Combustion occurs within the groove-shaped combustion area, pushing the trap, whereby a rotor is forced to rotate, conveying power from a combustible material to perform work. As a corollary, the apparatus may be configured for use in the field of air compression and air decompression. Multiple groove-shaped combustion areas may be configured in a parallel or series orientation. Gas compression/decompression only utilizes a single groove, whereas combustion preferably utilizes a compression groove and a combustion groove.

A pump is formed by a housing (10) having a fluid inlet (11) and a fluid outlet (12) and containing a rotor (15) forming with the housing (10) chambers (17a, 17b) that, on rotation of the rotor (15) by a drive, convey fluid from the inlet (11) to the outlet (12) to pump the fluid. A seal assembly (14) is arranged between the outlet (12) and the inlet (11). The seal assembly (14) includes a membrane (21) that contacts the rotor (15) and a flexible resilient spring member (22, 28, 35, 37, 40) that provides a force urging the membrane (21) against the rotor (15). The spring member (22, 28, 35, 37, 40) thus, on rotation of the rotor (15), moves radially relative to the axis of rotation of the rotor (15) and is arranged to provide a force on the rotor (15) via the membrane (21) that is constant and a minimum to maintain a seal between the rotor (15) and the seal (14) for a given outlet pressure of the pumped fluid.

A method for the noise modulation of a three-phase synchronous electric motor driven using a vector regulation by means of a motor control unit. Actual values for the rotated current components i.sub.d and i.sub.q may be obtained in an open-loop control system, where i.sub.d corresponds to the magnetization current and i.sub.q corresponds to the torque-forming current of the synchronous motor. The actual values may be compared with predetermined reference target values, and the differences between the actual values and the reference target values may be converted into control variables to regulate the actual values (i.sub.q, i.sub.d) to the reference target values. The magnetization current-forming current component (i.sub.d) may be adapted using an acoustic controller to a desired acoustic state depending on an acoustic state that was measured by a measuring device and was transmitted to the motor control unit.