624results about "Reciprocating piston engines" patented technology

The invention provides a hydraulic control pilot two-stage flow distribution static balance radial plunger hydraulic device and a working method, and relates to the technical field of radial plunger hydraulic devices. According to the scheme, the radial plunger hydraulic device is balanced through hydraulic control pilot two-stage flow distribution static force, flow distribution is controlled through external control pilot pressure, bidirectional rotation of a hydraulic pump motor and self-compensation after a valve plate is abraded are achieved by arranging an external control pilot oil way, and the service life is prolonged. In addition, by arranging the regular polygon driving type structure, regular polygon parts are additionally arranged between the crankshaft and the plunger, the transmission performance of the radial plunger pump is optimized, and friction force is reduced. By arranging the guide sleeve, the rubber cavity assembly and the return spring, the movement centering performance of the plunger can be effectively improved, leakage at the position of the plunger unit is reduced, and the complexity of the motor return device is simplified.

A closure element for a fluid end assembly that has two or more recessed grooves formed in its outer surface. The grooves are axially offset. A seal is placed in one and only one of the grooves. As wear occurs, the seal is relocated to one of the other grooves. Instead of a series of axially offset grooves in a single closure element, a kit may be formed from two or more otherwise identical closure elements, each with a single recessed groove at a different axial position. Another closure element has a series of ledge-like surfaces defining spaces within which a seal may be received. One outer surface surrounds one or more of the other surfaces. A seal is placed in one and only one of the spaces. As wear occurs, the seal is relocated to one of the other spaces.

The present invention discloses a ball plunger hydraulic motor comprising a housing, a stator fixedly mounted within the housing, a rotor rotatably mounted within the housing, a ball plunger structure mounted between the stator and the rotor, and a brake mounted within the housing for braking the rotor. Compared to the prior art, the present invention integrates the brake within the ball plunger hydraulic motor, eliminating the need for a brake in actual use. This significantly saves space and results in a more compact structure.

The invention relates to a hypocycloid mechanism comprising: a shaft (4); a gearwheel (7) rotatable about its center and coupled to the shaft (4); a pinion (8) parallel to the gearwheel (7), the pinion being rotatably mounted on an axle eccentrically passing through the gearwheel (7); a cylinder (1) having a piston (2); a connecting rod (3), one side of which is connected to the piston (2) and the other side of which is rotatably connected to the pinion (8), such that the rotation of the gearwheel (7) and the pinion (8) is associated with the reciprocating movement of the piston (2); at least one bearing-supported stationary part (6) in which the gearwheel (7) is rotatably mounted. The present invention is characterized in that: a fixed member (6) is an annular member provided with teeth on the inner side, and a pinion gear (8) provided with teeth on the outer side and meshing with internal teeth (6 ') of the fixed member (6); the gearwheel (7) is provided with teeth on the outside and is rotatably mounted in the stationary part (6) by means of a bearing (6 '') such that the teeth (6 ') of the stationary part (6) extend over a portion of the thickness of the stationary part, and the stationary part further comprises a toothless surface extending over a portion of the thickness of the stationary part and having a bearing support (6''), a gearwheel (7) having a toothless surface complementary to the bearing (6 '') of the stationary part, the gearwheel (7) being coupled by its teeth (7'') to the shaft (4); the connecting rod (3) has two arms (3a, 3b) extending on both sides of the gear assembly (7, 8) wherein a first arm (3a) is connected to the pinion (8) at a first pivot point (O) on one side of the gear assembly (7, 8) and a second arm (3b) is connected to the pinion (8) at a second pivot point (O) on one side of the gear assembly (7, 8). And the second arm (3b) is connected to the pinion (8) at a second pivot point (O ') on the other side of the gear assembly (7, 8) wherein the orthographic projection of the first point (O) on the plane of the gearwheel (7) and the orthographic projection of the second point (O') on the same plane of the gearwheel (7) are always equal. The invention also relates to an engine and a compressor comprising such a mechanism.

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 relates to the technical field of plunger pumps, in particular to a variable flow plunger pump which comprises a driving unit, a plurality of variable pumps, a plurality of variable flow executing mechanisms and a transmission mechanism. The variable pumps are connected with the driving unit; the variable flow executing mechanisms are connected with the variable pump. The transmission mechanism comprises a plurality of driving transmission parts and a driven transmission part, the driving transmission parts are located on the outer side of the driven transmission part and connected with the driven transmission part, and the driving transmission parts are connected with the variable flow executing mechanism. According to the variable-flow plunger pump, the variable pump is driven by the driving unit to output variable-flow hydraulic oil, large-range real-time adjustment of flow can be achieved through cooperation of the variable pump and the variable-flow executing mechanism and variable-flow control, adjustment is accurate, and large-torque output of the variable-flow executing mechanism at different rotating speeds is guaranteed; the multiple driving transmission pieces drive one driven transmission piece to rotate, stress is uniform, the abrasion loss is reduced, and the structure is more compact.

The invention relates to the technical field of marine equipment, and particularly discloses a ship fin stabilizer which integrates bionic resistance reduction, intelligent control and energy recovery functions. The fins are of a layered structure of a flexible silica gel skin and a shape memory alloy wire mesh, V-shaped groove arrays are arranged on the surfaces of the fins, and the fins can be self-adaptively deformed into a U shape to reduce resistance. The driving mechanism realizes high-frequency compensation through cooperation of a hydraulic cylinder and piezoelectric ceramics; the energy recovery module converts mechanical energy into electric energy through a two-way pump-generator. According to the device, the rolling trend is predicted through the LSTM neural network, a Q-learning optimization control strategy is combined, the stabilization efficiency and energy efficiency are remarkably improved, and the device is suitable for stable control of ships under high navigational speed and complex sea conditions.

Disclosed is an adjustable, secondary-controlled axial piston motor with a housing (1) in which an output shaft (2) is rotatably mounted with respect to an axis of rotation (3). The output shaft (2) is rotationally fixed to a cylinder drum (4) with respect to the axis of rotation (3), in which several working pistons (12) are linearly movable. According to the invention, a speed sensing device is provided for detecting the rotational speed of the output shaft (2).

A closure element for a fluid end assembly that has two or more recessed grooves formed in its outer surface. The grooves are axially offset. A seal is placed in one and only one of the grooves. As wear occurs, the seal is relocated to one of the other grooves. Instead of a series of axially offset grooves in a single closure element, a kit may be formed from two or more otherwise identical closure elements, each with a single recessed groove at a different axial position. Another closure element has a series of ledge-like surfaces defining spaces within which a seal may be received. One outer surface surrounds one or more of the other surfaces. A seal is placed in one and only one of the spaces. As wear occurs, the seal is relocated to one of the other spaces.

A hydraulic device (1) comprising a rotor (3, 9, 10, 11, 16-18, 23) and a port member (5) including a high pressure port (6) and a low pressure port (7). An outer surface (21) of the rotor faces an outer surface (22) of the port member (5) and is rotatable in a rotational direction about a rotation axis (19) relative to the port member (5). The rotor comprises a plurality of cylinders (11) angularly spaced apart from one another about the rotation axis (19) and a plurality of cooperating pistons (10) movable within each cylinder (11). The cylinders (11) communicate with respective open ends (25) at the outer surface (21) of the rotor, each of the open ends (25) alternately communicating with the high pressure port (6) and the low pressure port (7) under operating conditions. Every two consecutive cylinders (11) of the plurality of cylinders (11) are interconnected via a fluid displacement member (26). The fluid displacement member has a first opening (27) communicating with one of the two consecutive cylinders (11), a second opening (28) communicating with the other of the two consecutive cylinders (11), and a closure element (29) freely movable between the first and second openings (27, 28) and configured to substantially block either the first opening (27) or the second opening (28) when, under operating conditions, the pressure in the cylinder (11) communicating with the second opening (28) is higher or lower, respectively, than the pressure in the cylinder (11) communicating with the first opening (27). A flow resistor (30) is provided in the rotor (3, 9, 10, 11, 16-18, 23) at a position away from each open end (25), and a first opening (27) and a second opening (28) of each of two fluid displacement members (26) communicating with one cylinder (11) are in fluid communication with that cylinder (11) on the opposite side of the flow resistor (30).

Hydraulic machine with improved distribution Hydraulic machine, in which pistons are mounted sliding in housings along a sliding axis, each housing forming with the associated piston a first chamber (60) and a second chamber (70) distinct, characterized in that, the cylinder block (4) is configured so that, in projection along a plane perpendicular to the main axis (ZZ), for at least one housing, the conduit connected to the housing in which a piston slides opens at the interface between the distributor (3) and the cylinder block (4) in a manner angularly offset by an angle A relative to the sliding axis of the piston in said housing (44). Figure for the abstract: Fig. 5.

The radial cam engine described consists of a piston assembly arranged in a radial configuration. Within the engine, a piston moves back and forth within a cylinder during the internal combustion process. The piston is connected to a follower that is guided and interacts with a central cam. This central cam is responsible for turning a drive shaft. The radial cam incorporates three different cam profiles, each designed for a specific stage of the engine's operation. These profiles are specifically tailored for the compression stroke, combustion stroke, and exhaust stroke. By utilizing distinct cam profiles for each stroke, the engine can optimize its performance throughout the entire combustion process.

Volumetric variable displacement machine interacting with an operating fluid, said machine being a motor with axial pistons or a pump with axial pistons and comprising: i) means (2) interacting with the operating fluid; ii) a housing casing (3) housing means (2) interacting with the operating fluid; iii) actuating means (4) for regulating a displacement of the machine; iv) a control unit (5) for controlling the actuating means (4); v) a detection sensor (6) for detecting a parameter associated with the adopted displacement of the machine and operationally connected to the control unit (5); vi) a protective casing (7) protecting the control unit (5) that is integrated into or physically constrained on said housing casing (3). The detection sensor (6) is placed inside the protective casing (7).

The invention provides a hydraulic motor / pump and a manufacturing method of a rear cover, the hydraulic motor / pump comprises a cylinder body and the rear cover which rotate relatively, the rear cover forms a part of a shell of the motor / pump, and a first area of the rear cover is in contact with a second area of the cylinder body to form a friction pair; the first area is provided with an oil inlet for guiding hydraulic oil into the cylinder body, an oil outlet for guiding the hydraulic oil out of the cylinder body and a plurality of flow distribution grooves, and the flow distribution grooves communicate with the oil inlet and the oil outlet correspondingly. One of the first region and the second region forms a hardened layer by surface hardening. By means of the arrangement, a gap between the valve plate and the rear cover is avoided, hydraulic oil can be prevented from leaking between the valve plate and the rear cover when the motor or the pump works, leakage of the hydraulic oil is reduced, and pressure loss of the hydraulic oil is reduced. The hardness of one of the first area and the second area is increased, the requirements for abrasion resistance and high hardness are met under the conditions of low cost and small deformation, and therefore the service life of the rear cover and the service life of the cylinder body are prolonged.

A hydrostatic axial piston machine (1), in particular an axial piston pump, with an adjustable displacement volume, which is operated in a closed circuit, wherein the displacement volume is adjustable by means of an actuating device (4), wherein the actuating device (4) comprises a pressure-cutting function (16) which has a pressure-cutting valve (15) which is actuated depending on the pressure at a first pressure port (A) of the axial piston machine (1) and depending on the pressure at a second pressure port (B) of the axial piston machine (1). The pressure-cutting valve (15) is operatively connected to a first actuating piston (35a) which is actuated by the pressure at the first pressure port (A), and to a second actuating piston (35b) which is actuated by the pressure at the second pressure port (B).

The present invention relates to a force-multiplying mechanism comprising: A first wheel (1) that is toothed on the outside (11), which has one or more projections (12) with a smaller radius placed on one of the sides of the wheel, on the portion closest to the shaft (4) passing through said wheel; a second wheel (2) comprising a recess (21) with a smaller radius, which is located on the portion closest to the shaft (4) passing through said wheel, for each projection (12) of the first wheel (1), and respective curved hydraulic cylinders (23) are inserted with a piston at each upper and lower end thereof. The cylinders and the lower pistons thereof start at the recess (21) and run along said second wheel (2) until it reaches its outer circle, said cylinders and the upper pistons (22) thereof being superimposed on the edge of the aforementioned second wheel (2).

A hydrostatic servo assembly unit (1) for being arranged inside, outside or distant from a variable displacement hydrostatic unit (100) and for controlling the displacement of the variable displacement hydrostatic unit (100). The servo assembly unit (1) includes a servo housing (10) in which at least one servo piston (40) is arranged. The piston head (42) of the servo piston (40) can be pressurized such that the servo piston (40) can move linear relative to a servo cylinder (12) formed in the servo housing (10). The servo assembly unit (100) further includes a movable output element (49) protruding outside of the servo housing (10), which can be mechanically coupled to a displacement element (102) of a variable displacement hydrostatic unit (100).

A method for hydrogen refueling is proposed in which hydrogen (1) is subjected to an expansion process, wherein the expansion process is carried out using a hydraulically operated expander (40) which is used to drive a radial piston generator (15), wherein the expander (40) has n expander stages (26-30, 26a) in each of which expander pistons (26a) are arranged, wherein the hydrogen is expanded in cylinder chambers on a first side of the expander pistons (26a), wherein the radial piston generator (15) has n rotationally symmetrically arranged high-pressure compression stages (15a), wherein cylinder chambers on a second side of the expander pistons (26a) are hydraulically coupled to the high-pressure compression stages (15a-15e) via hollow compartments (A), wherein oil columns are each received in the hollow compartments (A) which are set into oscillation in the expansion process.where n is an integer from three to ten. Means for implementing the procedure are also proposed.

A piston arrangement comprising: a piston; a rotatable element, rotatable about an axis, having a first engagement profile; and a mechanism comprising: a first connecting element connected to the piston; a second connecting element pivotable about a fixed point and pivotally connected to the first connecting element; and a second engagement profile coupled to the first and / or second connecting element, configured to mechanically engage and disengage with the first engagement profile of the rotatable element.

There is thus provided, in accordance with achieving a novel embodiment, as a rotary shaft turning force containment. This apparatus has a central component on the outer perimeter of a large circular gear assembly at a distance of its rotary shaft, plurality of individual cylinders such as internal combustion cylinders or steam cylinders are deployed angular acceleration uniformly fixedly attached on the circumference of the said embodiments frame to operate at a distance of said rotary shaft. The rotary shaft at the center of a large circular gear assembly whereby turned by smaller gears by means of linkage therethrough the said cylinders piston rod assembly. The idea behind the cylinders deployed at a distance of the rotary shaft is to take advantage of the mechanical leverage to generate maximum torque force with minimum effort. A microprocessor and associated memory are vital means of controlling rpm in communication with the embodiments.

The invention relates to a two-stroke internal combustion engine that uses swashplates to transfer the power of multiple reciprocating pistons to a central shaft, allowing variable displacement and compression ratio adjustment. This two-stroke internal combustion engine is used in the automotive, marine, aviation, and power generation industries. Furthermore, the two-stroke internal combustion engine is used where low-noise operation is particularly required (e.g., military technology). The object of the invention is to expand the adjustment and control options of the swash plate in order to achieve optimal efficiency of the two-stroke engine and, at the same time, to reduce the structural complexity and the required material expenditure as well as to achieve a quieter operation. The problem is solved by connecting a tiltable swashplate holder connected to the swashplate to the drive shaft via a mechanical adjustment assembly that causes a continuous change in the angle of attack of the swashplate, and by assigning a control device to the swashplate holder that serves to control the angle of attack.

The application discloses a hydraulic motor with a floating oil seal protection device, which comprises a motor assembly, a shell covering the motor assembly, and a speed reduction assembly connected with one end of the motor assembly, wherein a gear ring is arranged on the speed reduction assembly, a first matching gap is arranged at the joint of the motor assembly and the gear ring, an annular sleeve is arranged on the outer side of the first matching gap, a groove is arranged on the end face of the sleeve close to the gear ring, a sealing ring is arranged annularly on the gear ring in the groove, the sealing ring is in interference fit with the gear ring, and an O-shaped ring is arranged on the outer side of the sealing ring. The protection device of the floating oil seal at the joint of the motor assembly and the speed reduction assembly is added, so that the problem that impurities are easily introduced into the gap between the motor assembly and the speed reduction assembly, the floating oil seal is abraded and corroded, and the speed reduction assembly is damaged or leaks oil is solved.

A dual-crankshaft compressed air engine includes an upper body and a lower body. The upper body is provided with a left cylinder buffer storage chamber, a lever, a left lever connecting rod pin, a left lever connecting rod, a left crankshaft, a left crankshaft seat, a left connecting rod, a left piston pin, a left piston, a left cylinder, a left movable valve pushrod, a left movable valve sleeve, a left gasket, a left exhaust valve plate, a left exhaust cover, a left exhaust port, a left camshaft with a cam, a left camshaft cover, a lever seat, a lever shaft, a bearing, a right lever connecting rod pin, a right lever connecting rod, a right crankshaft, a right crankshaft seat, a right connecting rod, a right cylinder, a right piston pin, a right piston, a right movable valve pushrod, a right movable valve sleeve, a right gasket, a right exhaust valve plate, a right exhaust cover, a right exhaust port, a right camshaft with a cam, a right camshaft cover, and a right cylinder buffer storage chamber, etc. This invention has the advantages of strong explosive force, high torque, exhaust energy recycling and reuse, low construction and power generation costs, stable power generation, high power generation efficiency, low energy consumption, and environmental protection.

The invention provides a method for controlling a hydraulic drive system having at least two hydraulic machines (2a, 2b).SOLUTION: For each of the hydraulic machines 2a, 2b, a setpoint value for a delivery quantity of the hydraulic machine is detected, wherein the delivery quantity is dependent on the displacement volume, and wherein manipulated values for the displacement volumes of the two hydraulic machines 2a, 2b are implemented in such a way that a ratio of the manipulated values to one another is equal to a corresponding ratio of the setpoint values, and in such a way that at least one condition is satisfied, the at least one condition includes a condition that the sum of the driving amount requests of the hydraulic machines 2a and 2b corresponding to the operation values is equal to or smaller than the driving amount maximum value, and the hydraulic machines 2a and 2b are controlled using the determined operation values.SELECTED DRAWING: Figure 1

The application discloses a low-pulsation and low-impact modular hydraulic plunger pump / motor cylinder, which comprises a plunger cylinder and a modular flow distribution plane structure; an annular groove is formed on the flow distribution end face of the plunger cylinder, and the annular groove is uniformly distributed with plunger holes, inner radial grooves and outer radial grooves in the circumferential direction; the modular flow distribution plane structure comprises a circular flow distribution plate and an inner end face boss and an outer end face boss which extend inward and outward along the radial direction of the flow distribution plate; the inner end face boss is matched with the inner radial groove, and the outer end face boss is matched with the outer radial groove, so that the modular flow distribution plane structure is nested in the annular groove of the plunger cylinder, and a flow distribution plane of the cylinder structure is formed; a plurality of flow distribution windows are formed on the flow distribution plate and are uniformly distributed in the circumferential direction, and the flow distribution windows are one-to-one corresponding to the plunger holes; and a damping structure is formed on the end position of the flow distribution window. The application can realize modularization, and can realize the seamless switching of the open and closed pumps and between the pump and the motor.

In an opposed-piston mechanism, an intake compression cylinder and an expansion exhaust cylinder are individually provided, and a rotating perforated columnar valve and an ignition combustion chamber are formed therebetween. A valve mechanism is arranged on a cylinder side surface side, and a disk cam that moves in conjunction with crank rotation operates an intake valve and an exhaust valve on a cylinder side surface via a movable fulcrum type rocker arm. A movable structure of the rocker arm also realizes opening / closing amounts of the intake valve and the exhaust valve according to an operating situation of an engine. Since a piston pin and a piston pin can absorb variations of an engine that occur when two connecting rods are connected to one piston, the two connecting rods can be easily connected to the one piston.

The invention relates to a connecting plate (10) for use in an axial piston machine, wherein the connecting plate (10) has a first and a second pressure channel (11; 12), wherein a bearing seat (14) is arranged between the first and the second pressure channel (11; 12). According to the invention, at least one wall surface of the first and / or the second pressure channel (11; 12) is produced by melting a metal powder (24) layer by layer by means of a laser beam (21) or by means of an electron beam.

The bore is reduced while the stroke is not lengthened to maintain the required displacement. [Solution] If we consider a square combustion chamber with a displacement of approximately 500cc, a bore and stroke of 54mm x 54mm x 4 pistons results in a very small bore and stroke of 494.6cc, compared to a normal single-piston engine with a bore and stroke of 85.72mm x 85.72mm and a displacement of 494.6cc. With an area ratio of 2.52 to 1 compared to a normal single-piston engine, the 4 pistons will experience more than 2.5 times the combustion pressure if the compression ratio is the same. If a normal single-piston 3-cylinder 1484cc engine produces 100 horsepower, then a 4-piston engine would theoretically produce 250 horsepower. And all this with the fuel efficiency of a naturally aspirated 1.5L engine. Although there are considerable mechanical losses due to the movement of four pistons and two crankshafts, the resulting increase in power more than compensates for these losses.

The invention discloses a method for quantitatively controlling direct use of wind power generation, and relates to the technical field of wind power generation. A tower top generator and a speed increasing mechanism are removed, the blade structure is simplified, the structural defect that a traditional wind tower is heavy at the top and light at the bottom is thoroughly overcome, the wind resistance and the load resistance of the wind tower in the extreme environment are greatly improved, and meanwhile under the synergistic effect of a hydraulic system, a conventional generator and an EMS electric control system, the wind resistance and the load resistance of the wind tower are greatly improved. Fault points prone to occurring during long-term operation of a complex mechanism are reduced, the overall fault rate is reduced to a great extent, and the safety and reliability are remarkably improved; a conventional generator is adopted at an equipment end, a variable pitch and high speed increasing structure is not needed, the equipment purchase and maintenance cost is remarkably reduced, meanwhile, a wind tower structure and a foundation which are mostly adopted at a construction end are lightweight, the construction cost is effectively reduced, the wind curtailment rate is effectively reduced at an operation end, the wind energy utilization rate is remarkably increased, and the wind power generation efficiency is improved. Meanwhile, power grid leveling and a large amount of energy storage cost are saved.