394results about "Reciprocating piston engines" patented technology

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.

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.

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).

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 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.

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 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.

Hydrostatic axial piston machine (1), in particular an axial piston pump, with adjustable displacement volume, wherein the displacement volume is adjustable by means of a control piston device (5) which has at least one control pressure chamber (5a; 5b). A control pressure valve (10a; 10b) is provided which generates a control pressure acting on the control pressure chamber (5a; 5b). The control pressure valve (10a; 10b) is actuated by a control device (20a; 20b) in the direction of a first control position connecting a first port (A1) with a second port (A2) and is actuated by the control pressure present in a control pressure line (15a; 15b) in the direction of a second control position connecting the second port (A2) with a third port (A3).The actuating pressure valve (10a; 10b) has a control spool (32a; 32b) arranged longitudinally displaceably in a housing bore (30) of a valve housing (31), which is provided with a longitudinal bore (50a; 50b) extending in the control spool (32a; 32b) from an end face (51a; 51b) of the control spool (32a; 32b) to a bore base (52a; 52b). A cylindrical support body (55) is arranged longitudinally displaceably in the longitudinal bore (50a; 50b), and the bore base (52a; 52b) is designed as a control surface actuated by the actuating pressure.

A piston pump (100) includes: a tilting mechanism (30) configured to bias a swash plate (8) in accordance with a control pressure; a support spring (20) configured to support the swash plate (8) by exerting the biasing force against the biasing force from the tilting mechanism (30); and a regulator (50) configured to control a control pressure guided to the tilting mechanism (30) in accordance with a self-pressure of the piston pump (100), wherein the regulator (50) has an outer spring (51a) and an inner spring (51b) configured to be extended and compressed by following tilting of the swash plate (8); and a control spool (52) configured to be moved in accordance with a biasing force from the outer spring (51a) and the inner spring (51b), the control spool (52) being configured to regulate the control pressure, and the outer spring (51a) and the inner spring (51b) and the support spring (20) are provided adjacent to each other and in parallel with respect to the swash plate (8).

A rotary steam engine includes: a stator mechanism including two stators forming a track therebetween; a rotor rotatably arranged between the stators and including cylinders and perorations open on an outer surface of the rotor and communicating with the cylinders; a mandrel disposed through the stator mechanism and the rotor; pistons respectively received in the cylinders and respectively including piston shafts movable along the track, an engine lubricating system being formed between the cylinders, pistons and stators; and gas covers radially movable, resiliently disposed on the stator mechanism and covered on the rotor; wherein when a gas injection space between the gas cover and the rotor communicating with the perorations, steam can flow to enter the cylinders to drive the pistons; wherein when the gas injection space is not in communication with the perorations, the pistons move to discharge steam in the cylinders via the perorations.

The present disclosure relates to a positive displacement machine device (1) comprising a constant displacement machine (2) with a fixed displacement volume and a variable displacement machine (3) with an adjustable displacement volume, wherein in pump operation of the positive displacement machine device (1) a fluid (4) can be conveyed from an inlet (5) of the positive displacement machine device (1) to an outlet (6) of the positive displacement machine device (1) by means of the constant displacement machine (2) and / or the variable displacement machine (3), wherein in motor operation of the positive displacement machine device the constant displacement machine and / or the variable displacement machine can be driven by fluid flowing from the inlet to the outlet. Noise emissions of the displacement machine device (1) are reduced and / or the displacement machine device (1) can be operated at high speed by fluidically connecting the inlet (5) to a first port (21) of the constant displacement machine (2) and to a first port (31) of the variable displacement machine (3), and wherein the outlet (6) is fluidically connected to a second port (22) of the constant displacement machine (2) and to a second port (32) of the variable displacement machine (3).

The present invention relates to a hydraulic pump with variable flow and reversible direction of rotation having a simple configuration and comprising a casing, a rotary shaft, a platen, two pumping pistons, a drum with a pumping cylinder for each pumping piston, a plate between the drum and the casing and surrounding the shaft with an intake opening and a delivery opening, both being diametrically symmetrical, and the plate having a protrusion. The invention further comprises a first pin in a first housing of the casing and a second pin in a second housing of the casing, both transverse to the shaft and accessible from the outside. The first pin has a first length such that it contacts the protrusion and the second pin has a second length such that it contacts the protrusion, and when the first pin and the second pin change positions, the plate rotates and the pump is configured to operate in the opposite direction of rotation.

The invention provides an independent hydraulic and electric control driving intelligent temperature control heat dissipation system, and belongs to the technical field of chassis heat dissipation. The system comprises an independent hydraulic drive fan heat dissipation module, an electronic fan heat dissipation module and an intelligent control module, and the system integrates an engine water cooling system, a pressurized air intercooling system, a drive hydraulic oil cooling system and a transmission transmission oil cooling system. A variable hydraulic oil pump and a hydraulic motor are adopted to independently drive a cooling fan to rotate, pressurized air, cooling liquid and hydraulic oil in the stacked combined type radiator are forcibly air-cooled, and an overflow valve is arranged to prevent pressure overload in the radiator; an oil-water exchanger and an electric control fan are used for cooling transmission oil of the transmission for multiple times; through the intelligent control module, a water, gas and oil multi-temperature parameter sensing network is constructed, and the real-time automatic temperature control adjusting capability is achieved. The system meets the heat dissipation requirements of the heavy armored chassis which is high in power, closed in space, compact in layout and rear-mounted in power unit.

The invention relates to a control plate (18) configured to fit a hydraulic machine (e.g., an axial piston machine or a pressure exchanger) for hydraulic fluid, the control plate (18) comprising a body (21) having an arrangement of passage openings (22, 23) for the passage of the hydraulic fluid and a contact surface, the entire thickness of the body (21) is formed from a primary material, wherein the primary material is a first polymeric material. It is an object of the present invention to provide a control board (18) having a good lifetime. This object is solved by a control plate (18) wherein the main body (21) comprises at least one differential section made of a second polymeric material (31) wherein the second polymeric material (31) is different from the main material.

The invention provides a star piston power system based on a magnetic transmission switching valve. The star piston power system comprises a plurality of piston expanders, an air inlet subsystem and an exhaust subsystem. The piston expanders are distributed in a star shape; the air inlet subsystem comprises a first valve body, a first sliding block and a first rotating disc, the first valve body is provided with a first annular cavity and a plurality of first air outlets, the first sliding block is movably arranged in the first annular cavity, and the first rotating disc is rotatably arranged on the first valve body and magnetically attracts the first sliding block; the exhaust subsystem comprises a second valve body, a second sliding block and a second rotary disc, the second valve body is provided with a second annular cavity and a plurality of second air inlets, the second sliding block is movably arranged in the second annular cavity, and the second rotary disc is rotatably arranged on the second valve body and magnetically attracts the second sliding block. The star piston power system based on the magnetic transmission switching valve can effectively reduce energy loss of the system and improve the overall energy efficiency of the system, and is more suitable for the working condition of a low-temperature heat source.

The present application relates to the technical field of hydraulic system, and proposes a hydraulic control system and working machine. In the hydraulic control system, the swash plate oil cylinder comprises a cylinder barrel and a piston. The piston is in sliding connection with the cylinder barrel. The piston is connected with the swash plate of the walking motor. The spring cavity, the first working cavity and the second working cavity are formed between the piston and the cylinder barrel. The acting area of the first working cavity is larger than that of the second working cavity. The swash plate control valve is connected with the oil source and the swash plate oil cylinder, and is used for controlling the communication state of the oil source with the first working cavity and the second working cavity. Through the structure setting, the first working cavity, the second working cavity and the spring cavity are arranged between the cylinder barrel and the piston, so that the difference between the acting area of the piston in the first working cavity and the acting area of the piston in the second working cavity is formed. The communication state of the first working cavity and the second working cavity with the oil source is controlled through the swash plate control valve, so that the walking motor realizes the switching of more speed states, and the speed regulating range of the walking motor is expanded.

The disclosure relates to a method for operating an internal combustion engine of a truck or omnibus, in particular a truck or omnibus with a permissible total mass of at least 3.5 tonnes, wherein (i) an electrolysis unit for the production of hydrogen, water is split into hydrogen and oxygen, (ii) a carbon dioxide sorption unit extracts carbon dioxide from the ambient air, (iii) the hydrogen and the carbon dioxide are fed to a methanol synthesis unit for the production of methanol, and are synthesised therein to methanol, (iv) a photovoltaic unit absorbs solar energy and converts it into electrical energy. The electrolysis unit, the carbon dioxide sorption unit and the methanol synthesis unit are powered by the electrical energy generated in the photovoltaic unit. The methanol produced is transported by means of a distributor system to at least one tank of the truck or omnibus, and is supplied from the tank as required to the internal combustion engine, and therein is combusted to generate mechanical energy.

A compound connecting rod for improving the efficiency of an internal combustion engine. The compound connecting rod includes a connecting rod, a connecting rod carrier, and a collapse blocker. During crankshaft rotation, the compound connecting rod undergoes a non-circular path that increases dwell time of a piston, reduces sidewall friction, and reduces secondary imbalance.