Abstract: The disclosed embodiments relate to the design of a system that converts sunlight into electricity. During operation, the system concentrates the sunlight onto a front surface of a selective absorber, wherein the selective absorber comprises a semiconductor material having a band gap capable of absorbing most spectral components of the sunlight (such as intrinsic silicon), and wherein the concentrated sunlight causes heat to build up in the selective absorber. Next, the system uses heat obtained from the selective absorber to drive a heat engine, which converts the heat into mechanical energy. Finally, the system converts the mechanical energy into electricity.

Abstract: A nozzle presents a longitudinal axis, includes both a combustion chamber made of metal material and presenting a downstream end, and a diverging portion made of composite material formed by a wall of conical shape extending between an upstream and a downstream end. The upstream end of the composite material diverging portion is connected to the downstream end of the combustion chamber. The nozzle further includes an annular mount made of metal material including a first portion secured to the combustion chamber and a second portion extending beyond the downstream end of the combustion chamber along the longitudinal axis. The upstream end of the composite material diverging portion is fastened to the second portion of the annular mount by a plurality of fastener members, each including a fastener bolt, each fastener bolt passing through the conically-shaped wall of the composite material diverging portion near the upstream end of the wall.

Abstract: Disclosed is a liquefied petroleum fuel system for internal combustion engines that improves fuel economy by mixing vaporized liquid petroleum gas (LPG) and ambient air at substantially equal random kinetic energies. The system maintains a certain vapor pressure in the LPG tank and delivers the LPG in a gaseous phase to an LPG burning device at a set pressure and temperature. The cycle repeats as necessary to maintain the desired pressure in the tank.

Abstract: The invention relates to a vehicle system for injecting an aqueous solution, said vehicle system comprising: a tank (500) for storing an aqueous solution; an injection system (300) configured for injecting aqueous solution from the tank (500) in an injection zone (Z) in the vehicle; and a UV light decontamination device (700) configured for decontaminating the aqueous solution stored in the tank (500) by emitting UV light.

Abstract: A water injection device for an internal combustion engine includes at least one water tank for storing water, at least one water injector for injecting water into the engine, at least one conveyor module including a conveyor element for conveying water from the water tank into the water injector, at least one first connection, at least one second connection, and at least one third connection. The first connection is configured on the conveyor module which is connected to the water tank by at least one first line. The second connection is configured on the conveyor module which is connected by at least one second line to the water injector. The third connection is configured on the conveyor module which is connected to the water tank by at least one return line. The conveyor module includes at least one heating device for heating water flowing through the conveyor module.

Abstract: An evaporated fuel processing device may comprise a canister, a control valve disposed on a purge passage and switching between a closed state being a state of closing the purge passage and an open state being a state of opening the purge passage, a pump disposed between the canister and the control valve, an acquiring unit acquiring a characteristic value related to a characteristic of the pump in a situation where the control valve is in the closed state and the pump pressurizes gas in the purge passage on a control valve side relative to the pump, and an estimating unit estimating a flow rate of the gas that the pump discharges to the purge passage on the control valve side when the control valve is in the open state, by using the acquired characteristic value.

Abstract: A gas processing system according to an embodiment of the present invention includes a heater which is configured to increase a temperature of liquefied gas compulsorily vaporized by a forcing vaporizer before the liquefied gas is joined with Boil Off Gas (BOG) compressed by a BOG compressor.

Abstract: Methods and systems are provided for conducting an evaporative emissions test on a fuel system and an emissions control system in a vehicle. In one example, in response to an indication that a vehicle parking condition may result in the isolation of the fuel system from the emissions control system via the unintentional closing of fuel tank valves, a vehicle's active suspension system may be employed in order to level the vehicle a determined amount such that the fuel system isolation issues may be mitigated prior to an evaporative emissions test procedure. In this way, the entire fuel system and emissions control system may be diagnosed for potential undesired emissions, and potential violations of regulatory requirements for evaporative emissions testing may be reduced.

Abstract: An engine with an EGR device includes an engine case, and an EGR pipe that introduces an EGR gas into an intake path. The EGR pipe is arranged to pass through an inside of the engine case. A part of the EGR pipe in the engine case is arranged to face a cooling water path in the engine case. The engine case is defined by a cylinder head. The cooling water path is arranged to surround a whole circumference of the EGR pipe.

Abstract: A control device controls an internal combustion engine including: an EGR cooler bypass passage; and a flow-rate-ratio control valve capable of controlling, by adjustment of its opening degree, an EGR cooler ratio R. The control device is configured, during an EGR gas introduction operation, to execute an intake air temperature control for adjusting the opening degree such that an intake air temperature Tb approaches a target intake air temperature Tbt. In this intake air temperature control, the control device is configured, when a designated condition that, even if the adjustment of the opening degree is performed, there is a temperature difference obtained by subtracting the target intake air temperature Tbt from a value of the intake air temperature Tb to be achieved as a result of the adjustment of the opening degree is met, to execute an opening-degree update prohibition processing that prohibits an update of the opening degree.

Abstract: Provided is a control device for an internal combustion engine that includes an EGR device equipped with an EGR cooler bypass passage and a flow-rate-ratio control valve equipped with a valve disc and capable of controlling a flow rate ratio. The control device is configured, when an opening degree control execution condition is met, to execute a vibration reduction control for controlling the flow-rate-ratio control valve such that the opening degree of the valve disc becomes greater than or equal to a vibration reduction opening degree that is greater than a minimum opening degree within an opening degree control range of the valve disc. The opening degree control execution condition includes a requirement that a parameter (pulsation level value) that becomes greater when exhaust pulsation acting on the valve disc is greater is equal to or greater than a first threshold value.

Abstract: An EGR valve unit is provided. The EGR valve unit comprises a segment gear disposed on a shaft of an EGR valve, a rotation arm disposed on a shaft of an air intake valve, a bearing disposed on the rotation arm via a pin, and a cam member disposed on the segment gear and formed with a push part configured to push the bearing to rotate the rotation arm when the EGR valve is operated.

Abstract: A valve housing that has a flow passage. Arranged in the flow passage are a valve seat that includes a valve hole, valve body that can be seated on the valve seat, and a section of a rotary shaft with the valve body fixed to the tip thereof. A ring-shaped seat surface is formed in the valve hole of the valve seat. A ring-shaped sealing surface corresponding to the seat surface is formed on the perimeter of the disc-shaped valve body. By rotating the rotary shaft, the valve body rotates open from a closed state in which the valve body is seated on the valve seat and the sealing surface is in contact with the seat surface. A tapered upstream-side flow regulating part is provided in the valve hole of the valve seat, so as to widen from the seat surface toward the upstream side of the EGR gas flow.

Abstract: A filter element of at least one of a vehicle and an internal combustion engine may include an annular filter body, an inner frame supporting the filter body, an upper end plate and a lower end plate arranged axially on the filter body, a pin eccentrically arranged on the lower end plate, a plurality of centring elements, and a positioning web. The annular filter body may surround a cylindrical inner space. The plurality of centring elements may be arranged distributed in a circumferential direction of the filter body around the first plate opening, protrude axially into the inner space, and respectively have a chamfer. The positioning web may be arranged on at least one of the upper end plate and the inner frame in the circumferential direction between two centring elements of the plurality of centring elements and extend parallel to the two centring elements.

Abstract: A filter oil composition and a method for removing airborne molecular contaminants from air are provided. The composition includes a first portion comprising paraffinic oil by volume of the composition, a second portion comprising polyalphaolefin (PAO) by volume of the composition, and a third portion comprising red dye by volume of the composition. Applying the filter oil composition to a cotton air filter material causes tackiness throughout the air filter material, thereby enhancing filtration of air passing through the filter. The composition generally is substantially non-reactive, has an excellent oxidation stability, possesses good thermal stability, and retains a suitable viscosity at a normal operating temperatures of an automobile engine. In an embodiment, the composition comprises 96.74% paraffinic oil by volume, 3.20% polyalphaolefin (PAO) by volume, and 0.06% red dye by volume. A viscosity of the composition at 100 degrees-C ranges between substantially 7.2 and 7.6 centistokes (cSTs).

Abstract: The present intake manifold consists of segments including an upper member, a lower member, and a middle member that is interposed between these members to demarcate and form intake passages so that the intake passages are arranged in a straight line, and has first welded portions at which the upper member and the middle member are welded together, and second welded portions at which the middle member and the lower member are welded together. The first welded portions are extended outward from the intake passage formed by the upper member and the middle member, and the second welded portions are extended outward from the intake passage formed by the middle member and the lower member. The middle member is provided with ribs holding the first welded portions and the second welded portions in one piece.

Abstract: A supercharging and pressure accumulating structure for an all terrain vehicle or a utility vehicle includes an engine body including a cylinder having an intake passage and an outtake passage. A supercharger includes a chamber having an inlet and an outlet. An air accumulator is mounted between the cylinder and the supercharger and includes an air chamber. An input side of the air chamber intercommunicates with the outlet of the supercharger. An intake manifold is connected between an output side of the air chamber and the intake passage. Operation of the engine body actuates the supercharger to generate a supercharged air current. The supercharged air current is firstly introduced through the input side of the air accumulator into the air chamber, passes through the output side of the air accumulator into the intake manifold to mix with fuel ejected by at least one nozzle, and then enters the cylinder.

Abstract: A supercharger structure for an all terrain vehicle or a utility vehicle includes an engine body and a supercharging device. The engine body includes a cylinder having an intake passage and an outtake passage. The supercharging device includes a supercharger, a throttle, an intake manifold, and at least one nozzle. The supercharger includes a chamber having an inlet coupled with the throttle and an outlet connected to the intake manifold. The intake manifold and the at least one nozzle intercommunicate with the intake passage. The at least one nozzle is connected to a fuel supply pipe of a vehicle. External air is drawn in by a guiding device in the chamber, flows through the throttle and the inlet into the chamber, and is pressurized. The pressurized air flows through the intake manifold to mix with fuel ejected by the at least one nozzle and then enters the cylinder.

Abstract: A supercharging and stabilizing structure for an all terrain vehicle or a utility vehicle includes an engine body including a cylinder having an intake passage and an outtake passage. A supercharger includes a chamber having an inlet and an outlet. The supercharger further includes a duct at the inlet. An air accumulator is mounted between the cylinder and the supercharger and includes an air chamber. An input side of the air chamber intercommunicates with the outlet and the duct of the supercharger. An intake manifold is connected between an output side of the air chamber and the intake passage. When fuel is added into an engine, a control valve on the duct is closed. During fuel return or idling of the engine, the control valve is opened, and the inlet and the outlet of the supercharger, the air chamber, and the duct intercommunicate with each other to balance pressure.

Abstract: Methods and devices are disclosed for introducing a fresh airflow, crankcase ventilation gases, fuel, and charge bypass flow upstream of a pressure source of an internal combustion engine.

Abstract: An engine intake air duct 1 has an intake portion 10 that extends along a first center line A, and a main duct portion 20 that extends along a second center line B. The main duct portion 20 has a merging portion 50, a discharge opening 21, and an extending portion 40 that extends from the merging portion 50 towards an opposite end to the discharge opening 20. A reflecting wall 41 is provided at an end face of the extending portion 40. The intake portion 10 merges with the main duct portion 20 in such a way that the first center line A is directed towards a downstream end of the main duct portion 20.

Abstract: The present disclosure relates to a structure for preventing freezing of moisture contents within a blow-by gas in an intake manifold, capable of preventing the blow-by gas introduced into the manifold from freezing even under a low temperature environment. The structure includes a positive crankcase ventilation (PCV) channel into which the blow-by gas is introduced, an insulating member having a first side and a second side that communicate with each other and inserted into the PCV channel, and a PCV nipple having a first end and a second end that communicate with each other and inserted into the insulating member to guide the blow-by gas. The insulating member includes an outer peripheral surface in contact with an inner peripheral surface of the PCV channel and an inner peripheral surface in contact with an outer peripheral surface of the PCV nipple to surround the peripheral surface of the PCV nipple.

Abstract: An injector for injecting fuel, which is introduced from a fuel rail, into an engine to supply the fuel thereto is provided. In particular, the injector includes a housing, an electromagnetic generation unit accommodated in the housing and formed to generate an electromagnetic field when electric power is applied thereto, a core inserted into a fuel-rail-side end of a bobbin to form a magnetic circuit using the generated electromagnetic field, a lead pipe inserted into an engine-side end of the bobbin to form the magnetic circuit by coupling with the core, a molding unit formed to enclose the electromagnetic generation unit and an outer peripheral surface of the core to block introduction of moisture, and a cover coupled to the outer peripheral surface of the core to constitute the magnetic circuit together with the core.

Abstract: Various embodiments include a high-pressure fuel pump for a fuel injection system of an internal combustion engine comprising: a rigid housing defining a pressure chamber; a low-pressure region for feeding fuel to the pressure chamber; a sealing element delimiting the low-pressure region in conjunction with the rigid housing, wherein the low-pressure region has a variable volume; wherein the sealing element deflects from a rest position to vary the volume of the low-pressure region and seals off the low-pressure region from surroundings; and a controllable adjusting element operable to deflect the sealing element to control the volume in the low-pressure region.

Abstract: The present disclosure relates to a pulsation dampening structure for a vehicle. The pulsation dampening structure includes a fuel rail, a rail plug disposed at an end portion of the fuel rail, and a pulsation dampening part disposed on the rail plug to dampen pulsation generated when fuel enters. A turbulent flow is caused by reflecting fuel which was entered, and a vortex is generated in the fuel, thereby dampening pulsation.

Abstract: To obtain a gasoline direct injection rail provided with an inlet capable of reducing pressure pulsation without increasing the inner diameter of a high-pressure pipe even when the pressure of a system is increased. A gasoline direct injection rail comprises an inlet 2, 21 at a first end 15, 34 of a rail body 1, 20, wherein an orifice 12, 31 is provided inside the rail body 1, 20, the inlet 2, 21 has a fuel flow passage 4, 23, and a hollow part 8, 27 is provided between the fuel flow passage 4, 23 and the orifice 12, 31.

Abstract: An ECU as a valve body operation estimation device includes a sampling unit that obtains at least one of voltage and current of the electromagnetic coil as sample values at intervals of a predetermined time in a sampling period set based on a predetermined reference timing, a variation calculation unit that calculates a degree of variation of the sample values obtained in the sampling period, a variation waveform which represents a change of the degree of variation caused by shifting the reference timing including a point at which the degree of variation reduces and then rises as the reference timing is delayed, the point referred to as a rising start point, and a timing estimation unit that estimates an operation timing of a valve body based on the reference timing at the rising start point.

Abstract: According to a system and a method for controlling an engine for an industrial vehicle according to an exemplary embodiment of the present specification, a control unit acquires state information of the industrial vehicle, accurately determines a state of the industrial vehicle based on the acquired state information, and controls whether to start or stop the engine in an idle state.

Abstract: Disclosed is a novel device that converts some of the power in ocean waves into electrical power or other means of performing useful work. One or more tubes are arranged so that when the device is in position in a body of water, the tubes are oriented vertically with one end positioned proximate to and/or above the surface of the body of water on which the device floats, and with the other end positioned below the surface of that body of water. In some embodiments, through a differential restriction on the flow of air in and out of an upper end of the tube, the average height of the water inside the tube is different from the average height of the water outside the tube. In some embodiments, a hollow void inside a flotation structure of the embodiment is filled with water to contribute significant mass to the embodiment and increase the momentum associated with its vertical oscillations.

Abstract: A power module for moving up and down on a closed loop pathway in a liquid medium is designed for rapid deceleration when traveling in one direction, and also for rapid acceleration when traveling in the opposite direction. To do this, one end of the power module is formed to have a high coefficient of drag, CD(L), and the opposite end of the power module is formed to have a relatively low coefficient of drag, CD(u). Specifically, in this combination CD(L) for deceleration is designed to be much greater than CD(u) for acceleration.

Abstract: The wind collection apparatus has a wind collecting section for collecting wind taken from a front surface side into a wind outlet. The wind outlet is provided below an upper end of the front surface of the wind collecting section. The wind collecting section is configured such that a cross section of wind flow passage becomes smaller from the front surface side toward the rear surface side. The wind collecting section has a pair of left and right side wall portions, and an upper wall portion bridged between the pair of side wall portions. A plurality of support columns are arranged to penetrate the upper wall portion. The upper end portion of each support column and the upper wall portion are connected to each other by cables, and upper wall portion is suspended by the cables.

Abstract: A method is provided for controlling the shutdown of a wind turbine of the type having a rotor, the rotor comprising one or more wind turbine blades. The method comprises dynamically determining a rotor speed reference; obtaining a measure of the rotor speed of the rotor; determining an error between the rotor speed reference and the rotor speed of the rotor; and controlling a pitch of one or more of the wind turbine blades based on the determined error. A corresponding wind turbine controller and a wind turbine including such a controller are also provided.

Abstract: A control method for increasing reactive power generation of a wind turbine having a Doubly-Fed Induction Generator (DFIG) includes obtaining, by a control device having one or more processors and one or more memory devices, wind forecast data of the wind turbine. Further, the method includes generating, by the control device, a real-time thermal model of the DFIG of the wind turbine using the wind forecast data. More specifically, the thermal model defines a thermal capacity for the DFIG that does not exceed system limits. Thus, the method also includes dynamically adjusting, by the control device, a reactive power set point of the DFIG of the wind turbine based on the real-time thermal model.

Abstract: A method controlling a wind turbine to avoid tonal noise production is provided. The method comprises acquiring noise data representing noise produced by a wind turbine and acquiring data from a plurality of vibration sensors positioned at different locations about the wind turbine. The method further comprises identifying a region of interest in the noise data, the region of interest being a candidate for containing tonal noise generated by the wind turbine, and identifying a vibration sensor, the data for which correlates with the noise data in the region of interest. The method further comprises determining a threshold vibration level for the identified vibration sensor, the threshold being based on the vibration level detected by the identified vibration sensor in the region of interest, and adjusting one or more wind turbine operating parameters in response to the vibration level detected by the identified vibration sensor exceeding the threshold.

Abstract: The present invention relates to control of wind turbines in a situation where a fault condition is detected. Control of a wind turbine is described where a control trajectory and a safe-mode trajectory are calculated based on the current operational state of the wind turbine. If the fault condition is detected the wind turbine is controlled using the safe-mode trajectory, otherwise, the normal operation of the wind turbine is continued where the wind turbine is controlled using the control trajectory.

Abstract: The present disclosure is directed to a system and method for forecasting a farm-level power output of a wind farm having a plurality of wind turbines. The method includes collecting actual operational data and/or site information for the wind farm. The method also includes predicting operational data for the wind farm for a future time period. Further, the method includes generating a model-based power output forecast based on the actual operational data, the predicted operational data, and/or the site information. In addition, the method includes measuring real-time operational data from the wind farm and adjusting the power output forecast based on the measured real-time operational data. Thus, the method also includes forecasting the farm-level power output of the wind farm based on the adjusted power output forecast.

Abstract: A wind turbine drive system includes a plurality of drive devices, a state quantity detection unit, a ring gear braking portion, and a control unit. The plurality of drive devices are provided in a first structure, and a ring gear is provided in a second structure. Each of the drive devices includes a motor drive portion and a speed reducing portion. The state quantity detection unit detects a load between a meshing portion of each of the drive devices and the ring gear. When a degree of variation in the load among the drive devices is outside a permissible range, the control unit performs a first control process of controlling the motor drive portion to prevent an increase in the degree of variation in the load and/or a second control process of controlling the ring gear braking portion.

Abstract: The invention relates to a method (100) for determining loads on a wind turbine tower. In a first step (110) of the method (100), bending moments in at least one rotor blade of the wind turbine are determined in order to provide a first variable, which identifies a first force acting on a nacelle of the wind turbine tower. In addition, in a second step (120) of the method (100), a nacelle deflection is determined in order to provide a second variable which identifies a second force acting on the nacelle of the wind turbine tower. Furthermore, a third step (130) of the method (100) comprises entering the first variable and the second variable into a calculation model, which displays the behavior of the tower. A fourth step (140) of the method (100) comprises a determination of loads on the tower of the wind turbine by means of the calculation model.

Abstract: The invention relates to a method (200) for monitoring a status of at least one wind turbine. The method (200) comprises: detecting first measurement signals via one or more sensors (210), wherein the first measurement signals provide one or more parameters relating to at least one rotor blade of the at least one wind turbine in a normal status; training a trainable algorithm based on the first measurement signals of the normal status (220); detecting second measurement signals via the one or more sensors (230); and recognising an undetermined anomaly via the trainable algorithm trained in the normal status, if a current status of the wind turbine, determined based on the second measurement signals, deviates from the normal status (240).

Abstract: A method of performing maintenance on a wind turbine component (18, 22, 24) of a wind turbine (10) having an integrated lifting apparatus (40). The method includes lifting a first temporary support (104) using the integrated lifting apparatus (40), coupling the first temporary support (104) to the nacelle (12) or the hub (16) and the integrated lifting apparatus (40), removing the wind turbine component (18, 22, 24) using the integrated lifting apparatus (40) and the first temporary support (104) in combination. The method may further include installing a replacement wind turbine component (18, 22, 24) using at least a part of the integrated lifting apparatus (40) and the first temporary support (104) in combination, decoupling the first temporary support (104) from the nacelle (12) or the hub (16) and the integrated lifting apparatus (40), and removing the first temporary support (104) from the wind turbine (10) using the integrated lifting apparatus (40).

Abstract: The invention relates to a bistable actuator device (1) for providing at least two actuator positions comprising: an elastic bending element (2) supported at at least one attachment point (31, 32, 34) such that, by applying a switching torque at the attachment point (31, 32, 34), elastic deformation of the bending element (2) results in a change from a first actuator position to a second actuator position; and at least one actuator element (41, 42) formed with a shape memory wire, the shape memory wire causing a pulling force by heating and being coupled to a portion of the bending element (2) at the attachment point (31, 32, 34) so that the pulling force causes the switching torque at the attachment point (31, 32, 34) to move the bending element (2) from the first actuator position to the second actuator position.

Abstract: Cylinder pump systems and methods for pumping and measuring fluids are provided. The pump system includes a piston cylinder pump, a linear actuator, and a motor assembly. The piston cylinder pump includes a piston located within a cavity of a cylinder body and dividing the cavity into a first adjustable chamber and a second adjustable chamber and a rod coupled to the piston. The linear actuator includes a shaft coupled to the rod and the linear actuator converts rotational motion to linear motion to linearly move the rod. The motor assembly is coupled to the linear actuator and operable to drive the linear actuator.

Abstract: A fluid pump for pumping a fluid from an inlet toward an outlet comprises a pump body, a pump diaphragm, and a valve seat. The pump body has a first opening and a second opening. The pump diaphragm is attached to the pump body and forms a pump chamber between the pump body and the pump diaphragm. The pump chamber is fluidly connected to the inlet by the first opening and to the outlet by the second opening. The valve seat is disposed inside the pump chamber and around the second opening. The valve seat protrudes with an undeformed height from the second opening into the pump chamber in a direction toward the pump diaphragm. The valve seat has an elastic body and a gasket with a sealing surface. The pump diaphragm is deflectable and is adapted to open and close a fluidic pathway of the outlet by moving into and out of contact with the valve seat.

Abstract: The invention relates to a device for generating a pulsating hydraulic fluid pressure in a working chamber (1) filled with hydraulic fluid, comprising a driveable working piston (4) movably guided in a hollow working cylinder, wherein a working chamber (1) that is in fluid communication with the working piston (4) is provided, such that, by means of the movement of the working piston (4) within the hollow working cylinder, a pulsating hydraulic fluid pressure can be generated in the working chamber (1).

Abstract: High pressure injection apparatus 2 for addition of a liquid formulation into a polymer melt stream at position 4 comprises pump assembly 6 upstream of an injector assembly 8. Pump assembly 6 is arranged to increase the pressure of the liquid formulation to a high pressure (e.g. up to 400 bar) and to accurately meter the liquid formulation to the injector assembly 8 which is arranged to inject the liquid formulation into the polymer melt stream. The polymer melt may be spun, for example to produce Fully Drawn Yarn (FDY) or Partial Orientated Yarn (POY). The pump assembly 6 comprises a syringe pump 12 which comprises a tube 14 in which a piston 16 is slideably received and is arranged to urge liquid formulation 18 within the tube to an outlet 20 which is coupled to an inlet of injector assembly 8.

Abstract: The pump device includes: a pump body which transfers a transfer fluid; a drive unit which drives the pump body; an operating unit which sets an operation of the drive unit; and a joint mechanism which attaches the operating unit to the drive unit. The drive unit includes a casing. The operating unit includes a user-accessible operating surface. The joint mechanism is attached to a wall surface of the casing so as to be rotationally operable about a first axis perpendicular to the wall surface and supports the operating unit such that the operating surface crosses a second axis perpendicular to the first axis and follows along an outer surface of the casing.

Abstract: There is provided an airless paint spray pump wherein the pump is a double acting piston pump having an inlet communicating with a source of paint, a motor for driving the pump, a pressure controller for controlling the pressure of the pressurized paint delivered by the pump, and a filter for filtering the paint delivered by the pump. The pump includes features which increase the accessibility of the components thereof, prevent the incorrect installation of the seal packings in the pump cylinder, and allow the assembly of the piston in the pump cylinder properly aligned with the cylinder so as not to damage the seal packings therein.

Abstract: A rotor comprises a central body configured to rotate. A lobe extends perpendicularly from the central body along an lobe axis. A curved leading periphery and a curved trailing periphery are on opposite sides of the lobe axis. A V-shaped rib spans between the curved leading periphery and the curved trailing periphery. A first hollow space is bounded by the V-shaped rib, the curved leading periphery, and the curved trailing periphery. The first hollow space is distal with respect to the central body along the lobe axis. A second hollow space is bounded by the V-shaped rib, the central body, the curved leading periphery, and the curved trailing periphery. The second hollow space is proximal with respect to the central body along the lobe axis. The rotor can comprise a plurality of stacked, stamped sheets to form a helically twisted supercharger rotor.

Abstract: A motor-operated compressor includes a casing having a sealed internal space, a first scroll fixed in the internal space, and a second scroll engaged with the first scroll to form a plurality of compression chambers. The compressor also includes a frame fixed on an opposite side of the first scroll with the second scroll interposed therebetween, and a driving motor positioned on an opposite side of the second scroll. The compressor further includes a rotary shaft coupled to the second scroll in an off-centered manner and coupled to the driving motor. The first end portion of the rotary shaft forms a fixed end supported in the radial direction by members positioned on both sides of the second scroll. The second end portion of the rotary shaft forms a free end coupled to a rotor of the driving motor.

Abstract: A motor operated compressor may include a first scroll; a second scroll that forms a pair of two compression chambers between the first scroll and the second scroll while being engaged with the first scroll to perform an orbiting movement; a frame fixed in a radial direction at a side of the first scroll with the second scroll interposed between the first scroll and the frame; and a balance weight fixedly coupled to the rotation shaft, wherein the rotation shaft or the balance weight is supported on the frame in an axial direction.