22results about "Engines with oscillating pistons" patented technology

A linear energy harvesting device that includes a housing and a piston that moves at least partially through the housing when it is compressed or extended from a rest position. When the piston moves, hydraulic fluid is pressurized and drives a hydraulic motor. The hydraulic motor drives an electric generator that produces electricity. Both the motor and generator are central to the device housing. Exemplary configurations are disclosed such as monotube, twin-tube, tri-tube and rotary based designs that each incorporates an integrated energy harvesting apparatus. By varying the electrical characteristics on an internal generator, the kinematic characteristics of the energy harvesting apparatus can be dynamically altered. In another mode, the apparatus can be used as an actuator to create linear movement. Applications include vehicle suspension systems (to act as the primary damper component), railcar bogie dampers, or industrial applications such as machinery dampers and wave energy harvesters, and electro-hydraulic actuators.

The invention relates to an internal combustion engine. The invention relates to a piston (5, 5 ') for a cylinder head, comprising two cylinders (7, 7') in the form of an arc in the longitudinal direction thereof, and a shaft (11), in each cylinder a piston (5, 5 ') is arranged so as to be movable from a position Pmin at a minimum distance from the cylinder head to a position Pmax at a maximum distance from the cylinder head, wherein the cylinders (7, 7 ') are arranged such that a movement of the piston (5) in the first cylinder (7) resulting from combustion of fuel in the combustion chamber (4) of the first cylinder (7) and a movement of the piston (5') in the second cylinder (7 ') resulting from combustion of fuel in the combustion chamber (4') of the second cylinder (7 ') take place in the same direction, a connecting rod (6, 6 ') is present on each side of the piston (5, 5') facing away from the combustion chamber (4, 4 '), which connecting rod is in the form of a circular arc in the longitudinal direction thereof, and an associated freewheel is present for each cylinder (7, 7'), the cylinders (7, 7 ') being further arranged in such a way that the axis of the shaft 11 represents the center point of a circle forming the circular arc of the cylinders (7, 7') and the connecting rods (6, 6 '), in each case, the axis of the shaft 11 represents the center point of the circle forming the circular arc of the cylinders (7, 7') and the connecting rods (6, 6 '). The side of the connecting rod (6, 6 ') opposite the pistons (5, 5') of the first and second cylinders (7, 7 ') is connected to the outer side (8, 8') of one of the free wheels and the inner side (10, 10 ') of the free wheel is connected to the shaft (11), respectively, the free wheels being arranged such that, in each case, the piston (5, 5') of the first and second cylinders (7, 7 ') is connected to the outer side (8, 8') of the free wheel. Movement generated by combustion of fuel in the combustion chambers (4, 4 ') of the cylinders (7, 7') and transmitted to the outer sides (8, 8 ') of the freewheels through the connecting rods (6, 6') of the pistons (5, 5 ') is transmitted to the shaft (11), and the freewheels each run freely in opposite directions and the outer sides (8, 8') of the freewheels are coupled to each other such that they perform movement in opposite directions, as a result, the movement of the pistons (5, 5 ') in the first and second cylinders (7, 7') takes place in opposition, to a method for operating such an internal combustion engine and to the use of such an internal combustion engine for driving a motor vehicle, an aircraft or a ship.

A machine system of positive displacement, centric reciprocating machine type, comprising at least two cooperating machines (101; 101'; 101''; 101''') of said machine type, a single rotary main drive shaft (117; 126) providing joint operation of a pair of drive shafts (115; 116) of each machine, said operation being provided by attaching a single non-circular gear (118; 119) to each of the two drive shafts (115; 116) of each machine, and letting the non-circular gears (118; 119) of the machine drive shafts (115; 116) engage with the single and rotary main drive shaft (117; 126) located parallel to the drive shafts (115; 116) of the rotary parts (105; 107; 109; 111; 113 and 106; 108; 110; 112; 114) of the machines either a) via a respective one of first and second non-circular gears (127; 128) on the rotary main drive shaft (126), or b) via a non-circular rotary gear (120) rigidly attached to a circular gear (123) rotatably engageable with a respective one of the first and second circular main gears (124; 125) on the rotary main drive shaft (117).

A wobble ring pump for pumping a highly viscous fluid for use in the food industry is provided, wherein the wobble ring pump comprises a rotating shaft and a pumping device with a working chamber. A spherical attachment on an end section of the rotating shaft, a wobble ring on the spherical attachment, and a partition can be arranged in the working chamber. The wobble ring pump is characterized in that the partition comprises a convex surface, wherein the convex surface can be positively coupled to the at least partially spherical inner wall of the working chamber, such that the partition can be arranged completely between the spherical attachment and the at least partially spherical inner wall.

A rotational engine system comprises a rotational engine and a propulsion system. The rotational engine includes an outer ring enclosure, an inner ring component, and a drive gear. The inner ring component includes a piston and a drive gear engagement portion. The piston is configured to travel within the outer ring enclosure along a circumference of the outer ring enclosure. The drive gear engagement portion is configured to rotate as the piston travels along the circumference of the circular shape of the outer ring enclosure. The drive gear is coupled to the drive gear engagement portion of the inner ring component such that rotation of the drive gear engagement portion rotationally drives the drive gear. The propulsion system is configured to deliver propulsive energy to propel the piston along the circumference of the outer ring enclosure.

The invention concerns a rotary machine with a spherical piston, comprising a housing (1) whose walls delimit a chamber having a spherical surface (1.1) in its central part. The chamber, delimited by the spherical surface (1.1), contains two rotors (2, 3) with spherical outer surfaces, each mounted rotatably around its own axis (L1, L2), which intersect and form an obtuse angle (α) between them, at the symmetry plane of the housing. The chamber, delimited by the spherical surface (1.1), between the rotors (2, 3), contains a piston composed of two parts (4, 5). The first piston part (4) is connected to the first rotor (2) by means of support arms (16, 17) attached to the first rotor (2) and by means of bearings of the first piston part (12, 13) located at the ends of the support arms (16, 17) and mounted in the first piston part (4), wherein the rotation axis of the bearings coincides with the axis of the rotating surface (L3) of the first piston part (4), and the second piston part (5) is connected to the second rotor (3) by means of support arms (18, 19) attached to the second rotor (3) and by means of bearings of the second piston part (14, 15) located at the ends of the support arms (18, 19) and mounted in the second piston part (5), wherein the rotation axis of the bearings coincides with the axis of the rotating surface (L4) of the second piston part (5). Additionally, the piston parts (4, 5) are connected by a piston part coupling (20), wherein the piston part coupling (20) for the piston parts (4, 5) ensures mutual rotary motion of the piston parts (4) and (5) around an axis being perpendicular to axes (L3) and (L4) of the rotating surfaces (4.1), (5.1) of the piston parts (4, 5) within a small angle. In one embodiment, the first chamber surface (2.2) of the first rotor (2), the second chamber surface (2.3) of the first rotor (2), the first chamber surface (3.2) of the second rotor (3), and the second chamber surface (3.3) of the second rotor (3) are provided with cooling elements (21) that improve heat exchange between the compressed gas and the rotor parts (2) and (3). In one embodiment, the contact surface (4.2) of the first piston part (4) and the contact surface (5.2) of the second piston part (5) are provided, in the area located further from the centre of the spherical surface (1.1) of the housing (1), with cooling elements for the piston parts (22), which improve heat exchange between the compressed gas and the piston parts (2, 3). The chamber, delimited by the spherical surface (1.1) of the housing (1), is divided into separable chambers (V1, V2, V3, V4), of which the first half (V1, V3) is delimited by the first chamber surface (2.2) and second chamber surface (2.3) of the first rotor (2), the spherical surface (1.1) of the housing (1), the rotating surface (4.1) of the first piston part (4), and the surface (5.2) of the second piston part (5). The second half of the chambers (V2, V4) is delimited by the first chamber surface (3.2) and second chamber surface (3.3) of the second rotor (3), the spherical surface (1.1) of the housing (1), the rotating surface (5.1) of the second piston part (5), and the contact surface (4.2) of the first piston part (4), and the rotors (2, 3) are coupled to each other via a gear transmission.

The present invention relates to an energy recovery device comprising: a gerotor; an electric generator operatively coupled to the gerotor; and one or more valves in fluid communication with a passage bypassing the gerotor, wherein at least one of the one or more valves is adapted to selectively open to limit a pressure applied to the gerotor by allowing a fluid to flow through the passage.

A rotary machine (1) for use in power generation and / or pumping applications, comprising a primary housing (2) enclosing a rotor (3) rotatably mounted in the primary housing (2) around a rotor axis (Y) having a fixed orientation with respect to the primary housing (2). The rotor (3) comprises a secondary housing (4) providing a compression chamber (5) in which a planar shaped joiner (6) is arranged that partitions the compression chamber (5) into four subchambers for (de)compression. The joiner (6) comprises two opposing joiner ends (6a, 6b) rotatably mounted to the rotor (3) around a joiner axis (X) which extends through the two opposing joiner ends (6a, 6b). The joiner axis (X) is orthogonal to and rotatable around the rotor axis (Y) in unison with the rotor (3) and the joiner (6).

The present invention provides an oscillating engine (10) comprising a chamber (510) within a casing (20), a rotatably oscillating vane (570) within the chamber (510), an outlet shaft (10) connectable to the vane (570), an inlet valve (420) connectable to the output shaft (10), and an outlet valve connectable to the output shaft (10), wherein the vane (570), inlet valve (420), and outlet valve are arranged to rotatably oscillate in synchrony with each other.

The invention is based on two cylinders (7, 7') which are longitudinally arc-shaped, in each of which the pistons (5, 5') are positioned at a minimum distance P from the cylinder head. min From the position P with the maximum distance from the cylinder head max and a shaft (11), the cylinders (7, 7') being arranged so that the movement of the piston (5) in the first cylinder (7) generated by the combustion of fuel in the combustion chamber (4) of the first cylinder (7) and the movement of the piston (5') in the second cylinder (7') generated by the combustion of fuel in the combustion chamber (4') of the second cylinder (7') are in the same direction, the internal combustion engine comprising, on each side of the pistons (5, 5') facing away from the combustion chambers (4, 4'), a connecting rod (6, 6') in the shape of a circular arc in its longitudinal direction, and an associated freewheel for each cylinder (7, 7'), the cylinders (7, 7') being arranged so that the axis of the shaft (11) forms the center point of a circle forming the basis of the circular arc shapes of the cylinders (7, 7') and the connecting rods (6, 6'), and in each case the connecting rods (6, 6') are connected to the pistons (5, 5') of the first and second cylinders (7, 7'). the freewheels are further arranged so that the side opposite to the pistons (5, 5') is connected to the outer part (8, 8') of one of the freewheels, and the inner parts (10, 10') of the freewheels are respectively connected to a shaft (11), the freewheels being arranged so that the movement generated in each case by the combustion of fuel in the combustion chambers (4, 4') of the cylinders (7, 7') and transmitted to the outer parts (8, 8') of the freewheels by the connecting rods (6, 6') of the pistons (5, 5') is transmitted to the shaft (11) so that the freewheels move freely in opposite directions, the outer parts (8, 8') of the freewheels being coupled to one another so as to perform movements in opposite directions, so that the movements of the pistons (5, 5') in the first and second cylinders (7, 7') move in opposite directions, a method for operating such an internal combustion engine, and the use of such an internal combustion engine for driving a motor vehicle, an aircraft or a ship.

A rotary actuator includes a manifold block and a rotor assembly including a rotor shaft and a plurality of arcuate pistons attached to the rotor shaft, each arcuate piston curved at a set radial distance from the rotor shaft and each piston attached to the rotor shaft via a crank arm. A pressure chamber assembly coupled to the manifold block defines a plurality of piston pressure chambers receiving and at least partially surrounding each arcuate piston, including a plurality of gland seals disposed adjacent an inlet of each piston pressure chamber to create a seal between an inner surface of the pressure chamber and an outer surface of the arcuate piston. Each gland seal includes an inner seal engaging a piston surface of the arcuate piston and a plurality of outer seals engaging an inner surface of the piston pressure chamber, thereby forming a hydraulic seal.

For pumping viscous media with low shear on its ingredients, as well as low noise and vibration, a toggle plate pump is disclosed, that offers a bevelled split housding for quick service and a bevelled wobble plate for to avoid complex geometries of the pump chambers.

A pressure sealing system in a machine of positive displacement, centric reciprocating type, e.g. a compressor, the machine having a non-rotatable housing (202; 302) which surrounds a pair of first and second mutually movable rotary parts (208, 217 and 308, 317) having co- axial axes of rotation, the housing exhibiting an inner, circular curved wall surface (205; 305) and two planar, parallel inner end wall surfaces (206, 207; 306, 307). A pair of drive shafts (101; 102) for the rotary parts ( extend in mutually opposite directions. Fluid inlets (231, 232; 331, 332); (229', 230'; 329', 330') and outlets (229, 230; 329, 330); (231', 232'; 331', 332') selectively communicate with adjustable angular spaces created by mutual rotary movement of the rotary parts. Pressure sealing between the rotary parts and surfaces of the inner walls is created by the rotary parts being filled with sealing liquid which through apertures in the rotary parts contacts at least parts of the inner wall surfaces of the housing.

A rotary machine (1) for use in power generation and / or pumping applications, comprising a primary housing (2) enclosing a rotor (3) rotatably mounted in the primary housing (2) around a rotor axis (Y) having a fixed orientation with respect to the primary housing (2). The rotor (3) comprises a secondary housing (4) providing a compression chamber (5) in which a planar shaped joiner (6) is arranged that partitions the compression chamber (5) into four subchambers for (de)compression. The joiner (6) comprises two opposing joiner ends (6a, 6b) rotatably mounted to the rotor (3) around a joiner axis (X) which extends through the two opposing joiner ends (6a, 6b). The joiner axis (X) is orthogonal to and rotatable around the rotor axis (Y) in unison with the rotor (3) and the joiner (6).

An internal combustion engine with two arced cylinders, with movement of the pistons in first and second cylinders takes place in the same direction. An arcing connecting rod on each of the sides of the pistons are averted from the combustion chambers. A freewheel is associated with each cylinder. An axis of the shaft represents the center of the arced shape of the cylinders and connecting rods. A side of the connecting rod opposite the piston connects to the outer side of a freewheel, and inner sides of the freewheels each connect to the shaft. Movement produced by the combustion is transmitted by the connecting rod to the outer side of the freewheel and the shaft. Outer sides of the freewheels are coupled to move in opposite directions, so the pistons in the first and the second cylinder run oppositely. A method operates such an internal combustion engine.

A bearing arrangement for a unit that is mutually turnable around a centre of rotation (R) comprising an external part (1) and an internal part (7), which, with the aid of high hydraulically acting pressure, is arranged to achieve a reciprocating rotary motion, or that is arranged to achieve a high hydraulic pressure from an applied torque from a reciprocating motion, whereby the external part (1) is provided with side walls arranged to axially surround at least a part of the internal part (7), and whereby the external part (1) comprises a radially inwardly arranged and essentially surrounding cavity (11, 12, 13, 14) in which the internal part (7) is arranged such that it can be rotated, which cavity (11, 12, 13, 14) is limited in the circumferential direction by at least one wing (3, 4) that protrudes inwards from the external part (1) and also limited by at least one wing (9, 10) that protrudes radially outwards from the internal part (7), which wings (3, 4, 9, 10) limit at least two chambers or compartments (11, 12, 13, 14) between the external part (1) and the internal part (7). At least one of the side walls of the external part is fixed connected with the, at least one, wing (3, 4) that protrudes radially inwards towards the internal part (7), which wing demonstrates a surface that faces radially inwards and that has a circular concave curvature for connection with an outwardly facing circular convex contact surface (8) at the internal part (7).

The invention relates to a rotary actuator. A rotary actuator includes a manifold block and a rotor assembly including a rotor shaft and a plurality of arcuate pistons attached to the rotor shaft, each arcuate piston curved at a set radial distance from the rotor shaft, and each piston attached to the rotor shaft via a crank arm. A pressure chamber assembly coupled to the manifold block defines a plurality of piston pressure chambers that receive and at least partially surround each arcuate piston, including a plurality of gland seals disposed adjacent an inlet of each piston pressure chamber to create a seal between an inner surface of the pressure chambers and an arcuate piston outer surface. Each gland seal includes an inner seal that engages a piston surface of the arcuate piston and a plurality of outer seals that engage an inner surface of the piston pressure chamber, thereby forming a hydraulic seal.

To provide a rotary actuator preventing leakage of liquid.SOLUTION: A rotary actuator includes a manifold block and a rotor assembly, and the rotor assembly includes a plurality of arcuate pistons 60. Each arcuate piston 60 curves at a set radial distance from a rotor shaft, and each piston 60 is attached to the rotor shaft via a crank arm. A pressure chamber assembly 64 coupled to the manifold block receives each arcuate piston 60, defines a plurality of piston pressure chambers, and includes a plurality of gland seals 72 disposed adjacent to an entrance of each piston pressure chamber to create a seal between an inner surface of the pressure chamber and an outer surface of the arcuate piston 60. Each gland seal 72 includes an inner seal 88 that engages with the piston surface of the arcuate piston 60 and a plurality of outer seals 90 that engage with the inner surface of the piston pressure chamber, and forms a hydraulic seal.SELECTED DRAWING: Figure 10

The invention relates to the field of machinery, in particular to pneumatic technology. The invention relates to an aerodynamic force energy conversion system and a using method and assembly thereof, the aerodynamic force energy conversion system comprises a magnet mechanism and a circulation channel allowing the magnet mechanism to circularly move, and the magnet mechanism is called an active magnet mechanism; the active magnet mechanism comprises at least one of a permanent magnet and a soft magnet; an air inlet and an air outlet are formed in the circulating channel; a valve is arranged between the air inlet and the air outlet; after the valve is closed, air flow of the air inlet is prevented from flowing to the air outlet, and the valve is used for controlling air circulation; the opening of the valve in the conducting state is in the shape allowing the driving magnet mechanism to pass through, and a magnet mechanism which is linked with the driving magnet mechanism through magnetic force and is called a driven magnet mechanism is arranged.

A roticulating thermodynamic apparatus (100) having a first fluid flow section (111) and a second fluid flow section (115). The first fluid flow section (111) is configured for the passage of fluid between a first port (114a) and second port (114b) via a first chamber (134a). The second fluid flow section (115) is configured for the passage of fluid between a third port (116a) and a fourth port (116b) via a second chamber (134, 234b). The second port (114b) is in fluid communication with the third port (116a) via a first heat exchanger (302a).

An internal combustion engine with two arced cylinders, with movement of the pistons in first and second cylinders takes place in the same direction. An arcing connecting rod on each of the sides of the pistons are averted from the combustion chambers. A freewheel is associated with each cylinder. An axis of the shaft represents the center of the arced shape of the cylinders and connecting rods. A side of the connecting rod opposite the piston connects to the outer side of a freewheel, and inner sides of the freewheels each connect to the shaft. Movement produced by the combustion is transmitted by the connecting rod to the outer side of the freewheel and the shaft. Outer sides of the freewheels are coupled to move in opposite directions, so the pistons in the first and the second cylinder run oppositely. A method operates such an internal combustion engine.