Abstract: A thrust reverser includes two thrust reverser elements movable between a retracted position in which the thrust reverser is inactive and a deployed position in which the thrust reverser is active, a cylinder for deploying the thrust reverser elements, and a single-acting cylinder for retracting the thrust reverser elements.

Abstract: An active canister purge system may include: a canister trapping a fuel vapor generated in a fuel tank; a purge control valve allowing the trapped fuel vapor to be purged from the canister into an intake pipe; a purge pump forcefully pumping the fuel vapor trapped in the canister into the intake pipe; a pressure sensor detecting a pressure at an inlet of the purge control valve; and a controller determining whether the pressure at the inlet of the purge control valve is varied on the basis of a pressure variation in the intake pipe in a non-purging condition to diagnose an open stuck state of the purge control valve.

Abstract: A leakage detecting device includes a first sensor, a second sensor, a pump, a leakage determination portion and a determination resetting portion. The first sensor, which is provided in a first passage connecting a fuel tank to a canister, detects density of vaporized fuel generated in the fuel tank. The second sensor, which is provided in a third passage connecting the canister to the pump, detects pressure in the third passage. The pump is provided between the third passage and an atmospheric passage. The leakage determination portion determines whether there is leakage in a vaporized fuel processing system or not, based on a time-variable amount of the pressure detected by the second sensor. The determination resetting portion resets a leakage determination result of the leakage determination portion, based on a time-variable amount of the density and the time-variable amount of the pressure.

Abstract: A fuel tank system constructed in accordance to one example of the present disclosure includes a fuel tank and an evaporative emissions control system. The evaporative emissions control system is configured to recapture and recycle emitted fuel vapor. The evaporative emissions control system includes a liquid trap, a first device, a second device, a control module and a G-sensor. The first device is configured to selectively open and close a first vent. The second device is configured to selectively open and close a second vent. The control module regulates operation of the first and second devices to provide over-pressure and vacuum relief for the fuel tank. The G-sensor provides a signal to the control module based on a measured acceleration.

Abstract: A filter cartridge for a filter for filtration of a fluid has a prismatic basic shape with a base face and a top face arranged parallel to each other and each having a polygonal basic shape. The prismatic basic shape is provided with a first lateral face and a second lateral face neighboring the first lateral face, wherein the first lateral face is an inflow surface and is substantially positioned perpendicular to the neighboring second lateral face. The prismatic basic shape has a third lateral face that is an outflow surface and is positioned at an angle relative to the first lateral face, wherein the angle is greater than 10° and smaller than 80°. A filter with such a filter cartridge is disclosed.

Abstract: A filter cartridge for a filter for filtering a fluid is to be used downstream of a main filter cartridge in a filter and is provided with an inflow surface, an outflow surface, and a main flow direction extending from the inflow surface to the outflow surface. A filter body is provided that can be flowed through along the main flow direction. A filter cartridge frame supports the filter body. A seal is disposed on the filter cartridge frame and separates a filter interior of a filter into a clean side and a raw side. An adhesive connection is provided that connects the filter body and the filter cartridge frame to each other. In one configuration, the filter cartridge frame at an inflow side is provided with a grip area, wherein the grip area enables inflow of a fluid into the filter body via the grip area and manual removal of the filter cartridge.

Abstract: A reciprocating piston-type internal combustion engine includes a cylinder head that has an inlet valve that can be supplied with combustion air from a cylinder inlet line connected to the inlet valve, comprising a pressure accumulator, out of which an additional medium that promotes the combustion in the cylinder can be supplied to the cylinder in a controlled manner, and an injection nozzle, via which fuel can be injected into the cylinder. The additional medium is a combustion air/fuel mixture according to the invention. The pressure accumulator is connected to the injection nozzle which has a nozzle needle, and the additional medium can be introduced into the cylinder in a controlled manner by means of the injection nozzle.

Abstract: A fuel system for an internal combustion engine includes a fuel system, a valve train, and a fuel injector including a cam actuated plunger. The fuel injector has a noise suppressor fluidly connecting a plunger cavity to each of a spill passage and a nozzle supply passage in the fuel injector. The noise suppressor has an inlet configuration forming a fuel admission flow area to the plunger cavity, and an outlet configuration forming a fuel discharge flow area. The fuel discharge flow area is smaller than the fuel admission flow area, and the noise suppressor adjusts to the outlet configuration to throttle discharging of fuel from the plunger cavity to limit valve train noise.

Abstract: A fuel distributor, in particular a fuel distribution rail for mixture-compressing, spark-ignited internal combustion engines, includes a base body at which at least one high-pressure input and multiple high-pressure outputs are provided and at least one insert element which is situated in the base body, the insert element separating a distribution area which connects the high-pressure outputs to one another at least essentially from a damping area. The insert element is configured at least essentially as a reshaped insert element. The insert element forms a divider which separates the distribution area at least essentially from the damping area. Furthermore, a fuel injection system including such a fuel distributor is provided.

Abstract: The present disclosure relates to a fuel injector for supplying fuel into a combustion chamber of an internal combustion engine. The fuel injector comprises an injector body, a nozzle, a needle, and a nozzle retainer removably arranged at the injector body to retain the nozzle against the injector body. The nozzle comprises a first channel adapted to contain fuel. The injector body comprises a second channel adapted to contain fuel. The first and second channels are fluidically connected. The needle is slidably arranged in the first and second channels. The needle comprises an upper needle section and a lower needle section. The lower needle section is removably connected to the upper needle section. The present disclosure also relates to a nozzle for a fuel injector, a lower needle section for a fuel injector, and an internal combustion engine comprising a fuel injector.

Abstract: A starting circuit for providing electric power to a starter motor of an internal combustion engine of outdoor power equipment is shown and described. The starting circuit includes a battery receptacle mounted on the outdoor power equipment and a starter battery that is received within the battery receptacle. The starter battery includes a battery controller and a series of battery cells contained within an outer housing. A plurality of high current pins provide electric power to the starter motor and auxiliary devices on the tractor/mower while a plurality of low current pins receives signals from the tractor/mower related to operation of the tractor/mower. A wireless transceiver is used to communicate information from the battery controller to a wireless device. The wireless device displays the received information to a user. The battery receptacle can be configured to include a dipstick receiver that receives an oil dipstick.

Abstract: The invention relates to an electromagnetic starter relay having an armature that is axially adjustably arranged, and having a pull-in winding, a hold-in winding and a switching winding. The hold-in winding is connected in series to the pull-in winding, wherein, in a phase stage of the meshing phase only the pull-in winding can be energised and in a different phase stage both the pull-in winding and the hold-in winding can be energised.

Abstract: In accordance with one aspect of the disclosure, an apparatus is provided that includes a database configured to store one or more vehicle status parameters of a vehicle and one or more secured space status parameters of a secured space. The apparatus further includes a server-based processor operatively coupled or connected to the database and configured to receive one or more of the one or more vehicle status parameters and one or more of the one or more secured space status parameters. The server-based processor is further configured to determine, based on at least one of the one or more vehicle status parameters and at least one of the one or more secured space status parameters whether to change a state of the vehicle.

Abstract: Methods and systems are provided for operating a variable displacement engine that includes a knock control system. Engine background noise levels for detecting engine knock may be the basis for determining whether or not the engine is operating in a cylinder deactivation mode. Further, select variable engine displacement modes may be avoided so that engine background noise level changes may be reduced to improve engine knock detection.

Abstract: Methods and systems are provided for operating a variable displacement engine that includes a knock control system. Fuel injection timing and cylinder firing patterns may be adjusted to maintain engine background noise levels so that the presence or absence of engine knock may be more reliably detected. Further, select variable engine displacement modes may be avoided so that engine background noise level changes may be reduced to improve engine knock detection.

Abstract: Methods and systems are provided for operating a variable displacement engine that includes a knock control system. Engine knock background noise levels determined during all cylinders operating mode may be applied when one or more cylinders are deactivated to determine the presence or absence of engine knock. Additionally, engine knock background noise levels determined during all cylinders operating mode may be applied when one or more cylinders are reactivated such that the engine operates with all cylinder combusting so that the possibility of indicating knock when knock is not present may be avoided.

Abstract: An ignition control system performs discharge generation control, in which a discharge spark is generated, once or a plurality of times during a single combustion cycle. The ignition control system successively calculates an approximate energy density based on a secondary current and a discharge path length. During a predetermined period after blocking of a primary current is performed during a single combustion cycle, the ignition control system calculates an integrated value by integrating the discharge path length at this time, based on the approximate energy density being greater than a predetermined value. The ignition control system performs the discharge generation control again based on the calculated integrated value being less than a first threshold.

Abstract: A method of verifying a cylinder deactivation mode on an engine is provided. The method can include activating an ignition device in a deactivated cylinder during an exhaust stroke of the deactivated cylinder. The method can include measuring a voltage of the ignition device. The method can include comparing at least one of an amplitude and a timing of a measured spike of the voltage against a baseline voltage spike. The method can include indicating a status of the deactivation mode based on the comparison against the baseline voltage spike.

Abstract: An igniter assembly comprising an ignition coil assembly connected to a firing end assembly by an extension, with a valve assembly disposed in a pressure chamber of the extension, is provided. The valve assembly includes a valve stem biased toward the ignition coil assembly by a spring to seal the pressure chamber. The valve assembly is used to evacuate contents from the pressure chamber by pressing the valve stem toward the spring and allowing contents of the pressure chamber to travel through and past the valve stem and out of the pressure chamber. The valve assembly is also used to fill the pressure chamber with an insulating medium by pressing the valve stem toward the spring and allowing the insulating medium to travel through and past the valve stem and into the pressure chamber after evacuating the contents out of the pressure chamber.

Abstract: A combined pump and turbine (electromechanical converter), which may be operable as a motorized centrifugal pump for starting a siphon and as an electromechanical turbine particularly for transmission of a liquid, such as water, in a water treatment plant.

Abstract: A power system includes a first wheel coupled to a first turbine. The first wheel includes a first central hub on a first central axis, and a first plurality of water scoops arranged at a radial distance from the central hub, the first plurality of water scoops arranged to engage a water source to turn the first wheel on the first central hub about the first central axis. The first wheel has a first plurality of weights arranged substantially equally spaced about a circumferential portion of the first wheel. A second wheel is coupled to a second turbine, and includes a second central hub on a second central axis, and a second plurality of water scoops arranged to engage the water source to turn the second wheel about the second central axis, the second wheel having a plurality of weights arranged substantially equally spaced about a circumferential portion of the second wheel.

Abstract: A buoyant wave energy device is disclosed that incorporates an open-bottomed tube of substantial length in which is partially enclosed a first body of water that oscillates in response to wave action. The device incorporates a buoy to which an upper end of the tube is connected and inside of which is trapped a second body of water of substantial mass. A differential phase in the oscillations of the water trapped in the tube, and the oscillations of the buoy of augmented mass, result in the periodic compression of a pocket of air trapped at the top of the tube, and in the subsequent expulsion of pressurized air through a turbine, thereby generating electrical power.

Abstract: A liquid potential energy increasing device includes a first receiving trough, a second receiving trough, a liquid absorbing structure, a first magnetic component, and a second magnetic component. The liquid absorbing structure includes a main body portion and an extending portion. The extending portion conveys a liquid in the first receiving trough into the main body portion. When a sum of a weight of the main body portion and a weight of the liquid in the main body portion is greater than the magnetic attraction, the main body portion hits the second receiving trough by gravity, so that the liquid in the main body portion is at least partially released to the second receiving trough so as to increase potential energy of the liquid.

Abstract: This invention relates to a noise reducing device, a wind turbine blade comprises such a noise reducing device, a method of retrofitted a noise reducing device, and a method of manufacturing such a noise reducing device. The noise reducing device comprises first noise reducing elements projecting from a base part having a third surface towards a second end. Second noise reducing elements are attached to the third surface and projects along the first noise reducing elements towards the second end. The first noise reducing elements are preferably serrations while the second noise reducing elements are bristles. The bristles projects at least into the gaps formed between adjacent serrations.

Abstract: This invention relates to a noise reducing device and a wind turbine blade comprises such a noise reducing device. The noise reducing device comprises a number of noise reducing elements projecting from a base part. A plurality of airflow modifying elements are attached to or integrated into the noise reducing elements. The airflow modifying elements extend from a local first end to a local second end along at least one of the first and second side surfaces. The airflow modifying elements has a height of no more than two-thirds of the boundary layer thickness and spacing of no more than one-thirds of the boundary layer thickness. The noise reducing elements are preferably serrations. The airflow modifying elements are preferably vanes projecting perpendicularly from the side surface of the noise reducing elements.

Abstract: Provided is a method of manufacturing a wind turbine rotor blade spar cap, which method includes providing a plurality of carbon profile elements; providing a number of adhesive film layers; preparing a spar cap assembly by arranging the carbon profile elements in a stack and arranging an adhesive film layer between adjacent carbon profile elements of the stack; and curing the spar cap assembly. The embodiments further describe a wind turbine rotor blade spar cap, and a wind turbine rotor blade including such a spar cap.

Abstract: A wind turbine includes at least one wind speed sensor, a number of pitch-adjustable rotor blades, and a control system for changing the pitch of the rotor blades and/or a generator torque. The the control system determines at time intervals an error parameter as the difference between an estimated wind speed and a measured wind speed as measured by the wind speed sensor. Then, based on a number of pre-defined wind speed intervals, a group of error parameters is obtained over time for each wind speed interval. For each wind speed interval and for each group of error parameters a wind speed offset is determined based on the average of the error parameters within the group which wind speed offsets are used in adjusting the measured wind speed.

Abstract: Provided is a rotor blade of a wind turbine, the rotor blade including a lightning protection system with at least one lightning receptor, wherein the lightning receptor includes a receptor part which protrudes from the surface of the rotor blade. Furthermore, the section of the receptor part with the maximum lateral extension is spaced apart from the surface of the rotor blade. Additionally, a lightning receptor for such a rotor blade and to a wind turbine for generating electricity comprising at least one such rotor blade, is also provided.

Abstract: Inventive concentrated solar power systems using solar receivers, and related devices and methods, are generally described. Low pressure solar receivers are provided that function to convert solar radiation energy to thermal energy of a working fluid, e.g., a working fluid of a power generation or thermal storage system. In some embodiments, low pressure solar receivers are provided herein that are useful in conjunction with gas turbine based power generation systems.

Abstract: A chemical injection pump system includes a reversible and controllable electric motor driving a cam wheel having a pressure ramp and a suction ramp, which rotates about an axis; and at least injection pump having a reciprocating plunger which is actuated by rotation of the cam wheel. The motor may be an outrunner brushless DC motor having a rotor which acts as the cam wheel, with an outer surface defining a cam profile having a pressure ramp and a suction ramp, which rotates about a stator axis. The system may be controlled to independently operate two or more injection pumps at different injection rates.

Abstract: A liquid supply system that enables a reduction in time required for precooling to reduce the time taken to make a pump operable. A container 130 includes a first casing 131 in which fluid passages passing through a first pump chamber P1 and a second pump chamber P2 are provided and a second casing 132 that surrounds the outer wall of the first casing 131. A space (fourth space K4) between the first casing 131 and the second casing 132 is configured to allow a cryogenic liquid for precooling to flow through it.

Abstract: A swash-plate-type variable displacement compressor is provided with a rotationally-driven drive shaft, a lug plate integrally fixed to the drive shaft, a swash plate fixed in a manner capable of being variably inclined to the drive shaft, a link mechanism for coupling the lug plate and the swash plate while permitting the variable inclination; and an actuator which is arranged between the lug plate and the swash plate and which uses pressure to change an inclination angle of the swash plate. The actuator has a cylindrical member which extends from a surface of the lug plate toward the swash plate, a bottomed cylindrical member fitted capable of being relatively displaceable to an outer peripheral surface of the cylindrical member, and a coil spring which is arranged in an inner space of the actuator, and which biases the bottomed cylindrical member in a direction which is away from the lug plate.

Abstract: One object is to provide a hydraulic pump that allows a drive source to be started with a small torque. The hydraulic pump includes: a cylinder block having a plurality of cylinder bores and disposed so as to be rotatable; pistons each retained in associated one of the cylinder bores so as to be movable; a swash plate for controlling the amount of movement of the pistons in accordance with the size of the tilt angle; a first pressing unit for pressing the swash plate in such a direction as to reduce the tilt angle of the swash plate; and a second pressing unit for pressing the swash plate in such a direction as to increase the tilt angle of the swash plate by the pressure supplied from the outside.

Abstract: An electric air pump includes a casing including an interior space; a pumping mechanism disposed in the space and including a driving device, a reciprocating piston driven by the driving device for compressing air, and an outlet being in fluid communication with the reciprocating piston; an on/off switch is disposed on the casing and including a switch contact configured to electrically connect to the driving device or not; and a USB receptacle disposed on the casing and electrically connected to the switch contact.

Abstract: A case for accommodating an air compressor contains: a first part and a second part connected with the first part so that the air compressor is accommodated in an accommodation space between the first part and the second part. The first part is in a rectangular frame shape and includes a fixing face, a receiving orifice defined on the first face and configured to receive a switch seat, and a spacing element extending from a bottom of the receiving orifice relative to the receiving orifice so as to space a first positive terminal on a bottom of the switch seat from a second positive terminal on the bottom of the switch seat, such that a wire connected on the first positive terminal does not contact with a wire connected on the second positive terminal.

Abstract: A vibration body unit includes: a vibration body; an inner cylinder that surrounds a circumference of the vibration body and that is elastically deformable; an outer cylinder that surrounds a circumference of the inner cylinder and that has an attachment section which is attached to a base part; a plurality of first spacers that are interposed between the vibration body and the inner cylinder and that are arranged to be spaced in a circumferential direction; and a plurality of second spacers that are interposed between the inner cylinder and the outer cylinder and that are arranged to be spaced in a circumferential direction, wherein the plurality of first spacers and the plurality of second spacers are arranged such that at least part of each of the plurality of first spacers faces each of the plurality of second spacers in a radial direction across the inner cylinder.

Abstract: Provided is a linear compressor including a drive unit having a mover reciprocating within a casing and a stator and a winding coil for driving the mover, a cylinder installed inside the casing to form a compression space, a piston coupled to the mover and configured to reciprocate within the cylinder to compress a fluid accommodated in the compression space, a frame supporting the cylinder and a discharge cover coupled to the frame to form a discharge space for accommodating refrigerant compressed in the compression space, a discharge pipe extending toward an outside of the discharge cover through the discharge space and forming a passage through which the compressed refrigerant moves from the discharge space, and a branch pipe branched from the discharge pipe outside the discharge cover and configured to guide the compressed refrigerant to a space between the cylinder and the piston.

Abstract: Provided is a linear compressor including a linear motor having a mover reciprocating with respect to a stator; a piston coupled to the mover to reciprocate; a cylinder into which the piston is slidingly inserted, the cylinder having an inner circumferential surface forming a bearing surface together with an external circumferential surface of the piston, the cylinder forming a compression space together with the piston, and the cylinder having at least one first hole formed through the inner circumferential surface of the cylinder and an outer circumferential surface of the cylinder to guide refrigerant discharged from the compression space to the bearing surface; and a porous member inserted into the outer circumferential surface of the cylinder and configured to cover the first hole, the porous member having multiple micropores smaller than the first hole.

Abstract: A home flood prevention appliance system includes controller circuitry disposed in a shroud above a cover of a sump basin, and a plurality of electrically operated sump pumps disposed in a lower portion of a structural frame positionable below the cover in the sump basin. The system also includes a water control actuator operable as a water main control device for a domestic water distribution network and a flow meter to measure the flow of municipal water supplied to the network. The controller circuitry configured to selectively energize the pumps to extract liquid from a sump basin based on a liquid level in the sump basin. The water control actuator controlled by the controller circuitry to shut off a municipal water supply to the domestic water distribution network in response to detection of a leak. Communication circuitry included in the home flood prevention appliance may wirelessly communicate.

Abstract: A miniature transportation device is disclosed and includes a gas inlet plate, a resonance plate and a piezoelectric actuator, which are stacked on each other sequentially. The gas inlet plate comprises at least one inlet, at least one convergence channel and a convergence chamber. The convergence channel is in fluid communication with the inlet and the convergence channel. The resonance plate comprises a central aperture. A chamber gap is formed between the resonance plate and the piezoelectric actuator to define a first chamber. When the piezoelectric actuator is enabled, the gas is fed into the miniature gas transportation device through the inlet of the gas inlet plate, converged to the convergence chamber through the convergence channel, transferred through the central aperture of the resonance plate, introduced into the first chamber, and transferred along a transportation direction through a vacant space of the piezoelectric actuator to be discharged continuously.

Abstract: A peristaltic pump includes a rotating member operably coupled to a drive. The rotating member includes a plurality of rollers arranged in a circular configuration. A guide member defines a channel configured to direct a peristaltic tube around the rotating member so that the peristaltic tube interfaces with the plurality of rollers. The peristaltic tube is pressed against the plurality of rollers by a retaining shoe. The retaining shoe contains surface irregularities configured to restrict movement of the peristaltic tube. A keeper braces the restraining shoe against the peristaltic tube. The rotating rollers compressing the peristaltic tube against the retaining shoe as the rotating member rotates results in a peristaltic action that produces a nearly pulse free linear flow.

Abstract: The invention relates to an actuating device (1) for mechanically controlling a membrane pump device (2), having a base body (4) which comprises a mounting face (7) for a membrane pump device (2) and through which a control fluid line (33, 35) passes which extends from a control fluid port (78, 79) to a control fluid opening (34, 36) which opens at the mounting face (7), a control fluid valve (74, 75) being arranged in the control fluid line (33, 35), which control fluid valve is designed to influence a cross section of the control fluid line (33, 35), and having an adjustment device (9, 14), which comprises a fluid actuator (38) arranged on the mounting face (7) for providing an adjustment movement, and a working fluid valve (81, 82) which is designed to influence a cross section of a working fluid line (85, 86) which passes through the base body (4), and the control fluid valve (74, 75) and the working fluid valve (81, 82) being electrically connected to a control device (70) which is designed to electrical

Abstract: The scroll compressor includes scroll members that include a compression chamber to compress working fluid, a housing that houses the scroll members, a second driving-side shaft portion that discharges the compressed working fluid from the compression chamber and is rotated around an axis with respect to the housing, a bearing that rotatably supports the housing with respect to the second driving-side shaft portion , and a seal member between the second driving-side shaft portion and the housing . A lubricant is provided between the bearing and the seal member.

Abstract: A pump, including: inner gerotor; a crankshaft; an outer gerotor; an inlet assembly with inlet ports; an outlet assembly with outlet ports; and magnetic actuators. The inner gerotor includes lobes and a central opening. The crankshaft: passes through the central opening; is rotatable about an axis of rotation; and includes a first longitudinal axis not co-linear with the axis of rotation. The outer gerotor includes recesses. The magnetic actuators are sequentially energized to create magnetic fields to displace the inner gerotor with respect to the crankshaft to: displace a first lobe out of a first recess and draw fluid through an inlet port into the first recess; and displace a second lobe into a second recess and expel second fluid out of the second recess and through an outlet port.

Abstract: Provided is a tip seal for a scroll compressor capable of reducing a frictional force between scroll members and the tip seal and contributing to energy saving of the scroll compressor while maintaining the sealing performance. A tip seal 1 in a spiral shape for sealing a compression chamber formed between a fixed scroll and a movable scroll in a scroll compressor provided with the fixed scroll and the movable scroll serving as the scroll members has a plurality of concave parts 4 formed by partially notching a sliding surface 5 on the sliding surface 5 for the scroll members, the concave parts 4 are arranged on at least one of a spiral inner peripheral surface 1b and a spiral outer peripheral surface 1a, and each of the concave parts 4 opens to the inner peripheral surface 1b or the outer peripheral surface 1a and also does not penetrate through the inner peripheral surface 1b or the outer peripheral surface 1a.

Abstract: Disclosed is a scroll compressor with a refrigerant discharge flow passage and an oil recovery flow passage separated from each other to improve efficiency and reliability of the compressor. The scroll compressor includes a flow passage separation unit configured to separate an intermediate space between a drive portion and a compression portion into an inner space communicating with the refrigerant flow passage and an outer space communicating with the oil flow passage to separate the refrigerant discharge path from the oil recovery path. Accordingly, the present invention may prevent the oil from being mixed with the discharged refrigerant, thereby reducing an oil discharge amount.

Abstract: A compressor may include first and second scrolls, and an axial biasing chamber. Spiral wraps of the scrolls mesh with each other and form compression pockets including a suction-pressure compression pocket, a discharge-pressure compression pocket, and intermediate-pressure compression pockets. The axial biasing chamber may be disposed axially between the second end plate and a component. Working fluid disposed within the axial biasing chamber may axially bias the second scroll toward the first scroll. The second end plate includes outer and inner ports. The outer port is disposed radially outward relative to the inner port. The outer port may be open to a first one of the intermediate-pressure compression pockets and in selective fluid communication with the axial biasing chamber. The inner port may be open to a second one of the intermediate-pressure compression pockets and in selective fluid communication with the axial biasing chamber.

Abstract: Systems and methods for handling fluid discharged from an oilfield drilling operation including cuttings and other waste products are disclosed. An eddy pump is coupled to a tank with a controller for dispensing a predefined quantity of fluid to a truck, dryer, or another suitable receptacle. The controller causes a precise quantity of fluid to be dispensed and can deliver a weight ticket to an operator which reduces the risk of too heavy a load causing a fine or too light a load to cause inefficiencies.

Abstract: An electric motor-vehicle coolant pump includes a housing, a pump unit with blade elements, a motor unit with a motor stator and a motor rotor which are mounted in the housing via a bearing, and inlet and outlet openings with respective center axes. The pump unit pumps a cooling fluid. The motor rotor has an impeller element and a drive element which extends in an axial direction and which has an axis of rotation. The blade elements are arranged on the impeller element. The inlet and outlet openings each allow the cooling fluid to flow through the motor unit. The outlet openings of the pump unit are arranged in the motor rotor. When viewed in an outlet direction, the respective center axes of the outlet openings include an angle ? of 10° to 135° with respect to a projection of the axis of rotation into the respective outlet opening.

Abstract: An impeller assembly with an impeller and a cutter bar plate is used in a chopper pump system which handles liquid material sometimes entrained with large debris and stringy matter. The debris and matter present clogging hazards, which are reduced by a combination of scissoring between sharpened impeller blades and shearing fingers, and between cutting wings and shearing fingers. To make the cutting feature more aggressive, sharpened edges along two of the scissoring edges of the shearing fingers are utilized. Preferably, the sharpened edges are either the result of machined v-notches on the cutting surface of the shearing fingers or of a casted part having a cupped surface. Generally speaking, the impeller assembly comprises an impeller attached to a rotatable pump shaft and includes a back shroud.