Abstract: The present invention relates to a diesel exhaust fluid (DEF) pump, DEF pump system and method for use of a DEF pump in cleaning the exhaust from diesel and diesel-electric engines. The DEF pump includes a plurality of gears, a pump housing, wear plate, pump body cover, a pump body insert, inverter assembly, inverter housing, speed sensor, pressure sensor, controller area network (CAN) connector, inverter cooling pipe, mounting feet or base plate, inlet, outlet, lifting ring, power connector, and motor. The DEF pump system includes a DEF pump, a main DEF tank, a dosing tank, a selective catalytic reduction (SCR) system, a flow control valve, and a relief valve. The DEF pump pulls DEF from a large tank, pumps DEF to a smaller tank injects DEF from the small tank into the exhaust stream where some of the DEF is consumed, and circulates unused DEF back to the large tank.

Abstract: A method comprising introducing CO2 into thermal water (2) in an underground reservoir (3) designated and suitable for the geothermal generation of energy, wherein the CO2 is discharged from a nozzle (4) and introduced into the thermal water (2) at a discharge flow velocity, wherein the discharge flow velocity is above a lower limit value which is selected in such a way that backflow of the thermal water (2) into the nozzle (4) is prevented, and is below an upper limit value which is selected in such a way that stripping of CO2 dissolved in the thermal water (2) is prevented.

Abstract: A cyclical salinity-gradient power generating system based on phase change materials and solar photothermal conversion is provided. The system comprises a solution supplying device, a power generating device and a power output device. The solution supplying device provides seawater with high and low concentration as salinity-gradient energy source of the power generating device; the power generating device implements day-and-night cyclical salinity-gradient power generation; the power output device stores electricity, part of which is used as providing power for the pumps inside the system and part of which is used as system output. A cyclical salinity-gradient power generating method based on phase change materials and solar photothermal conversion is also provided.

Abstract: The present invention concerns a sliding cam system for an internal combustion engine having at least one camshaft, an adjustment element and at least one actuator. The camshaft comprises a carrier shaft with a primary sliding cam element and at least one secondary sliding cam element. Each of the cam elements are arranged so as to be displaceable axially relative to the carrier shaft. Each of the cam elements comprises a shift gate with at least one shift groove. The actuator has at least one actuator pin which engages in the shift groove of the shift gate of the primary sliding cam element according to the necessary switch position of the camshaft. The adjustment element is arranged parallel to a longitudinal axis of the carrier shaft and is axially displaceable in the direction of the longitudinal axis of the carrier shaft and has at least two coupling pins.

Abstract: A solar receiver and associated components, systems and methods for use with a concentrated solar power plant. The solar receiver including a heat-absorbing solid body, an optical arrangement configured to direct light on to the heat-absorbing solid body, and a heat exchanger cowl proximate the heat-absorbing solid body arranged to provide a flow of working fluid over the rotor. In use, the light from the optical arrangement heats the heat-absorbing solid body which in turn heats the working fluid proximate the heat-absorbing solid body. The heat-absorbing solid body is movable relative to the optical arrangement from a first position to a second position such that the heat-absorbing solid body does not overheat.

Abstract: An apparatus includes a closed gas system having: a working circuit in which a compressor for a working fluid, a first heat exchanger for heating the working fluid, an expander and a second heat exchanger for cooling the working fluid are arranged; a first pressurised gas tank and a first gas pipe which branches off from the working circuit between the compressor and the first heat exchanger and opens into the first pressurised gas tank; and a second gas pipe which branches off from the first pressurised gas tank and opens into the working circuit between the expander and the second heat exchanger. A method controls pressure in a closed gas system using the apparatus.

Abstract: A method for reducing loads acting on a wind turbine includes determining, via a processor, at least one loading condition of the wind turbine resulting from a wind shear condition below a design threshold, determining, via the processor, a rotor speed setpoint of the wind turbine to cause an increase in thrust when the at least one loading condition exceeds a loading threshold; operating the wind turbine based on the rotor speed, and operating a rotor imbalance control module of the wind turbine to at least partially compensate for the at least one loading condition of the wind turbine resulting from the wind shear condition below the design threshold.

Abstract: The present invention provides a fluid transfer apparatus comprising: a rotating shaft comprising a rotation unit extending along an axial direction and a first eccentric unit and a second eccentric unit disposed to be spaced apart from each other along the axial direction; a first rotor housing forming a first fluid compression space in the shape of an epitrochoid curved surface; a second rotor housing forming a second fluid compression space in the shape of an epitrochoid curved surface, and positioned to be spaced apart from the first rotor housing along the axial direction; a first rotor disposed in the first fluid compression space so as to delimit the first fluid compression space into multiple variable-displacement spaces, and coupled to the first eccentric unit while surrounding the first eccentric unit in the radial direction of the first eccentric unit; and a second rotor disposed in the second fluid compression space so as to delimit the second fluid compression space into multiple variable-displac

Abstract: An engine braking system includes a camshaft, a follower, an exhaust armature, a lever, and a hydraulically actuated piston. The camshaft includes at least one cam. The cam has a lobe and a brake bump. The follower engages the cam. The exhaust armature is coupled to the follower. The lever is coupled to the exhaust armature. The hydraulically actuated piston moves the lever. Hydraulic actuation of the piston causes a change in lash distance between the cam and the follower. In an engine brake mode, the follower contacts the cam throughout rotation of the cam.

Abstract: A switchable rocker arm to control the lift of a valve bridge or of a single valve of a valve train group of an internal combustion engine; the switchable rocker arm being able to rotate around a first axis and comprising: a cam body, which is configured to be rotated by a cam; a valve body, which is configured to act upon the valve bridge or the single valve; wherein the switchable rocker arm can selectively be switched between a first configuration, in which the rotation of the cam body around the axis generates a movement of the valve body, and a second configuration, in which the rotation of the cam body around the axis does not generate any movement of the valve body.

Abstract: A fluid control valve includes: a sleeve in a bottomed cylindrical shape, including an inlet, communication ports, an inner peripheral surface, and an inflow annular groove recessed from the inner peripheral surface in a region facing the inlet; a spool slidably disposed on the inner peripheral surface in the sleeve to open and close the communication ports; a C-shaped leaf spring formed by bending a leaf spring into an annular shape with two ends facing each other to form a notch and disposed in the inflow annular groove capable of being contracted in diameter to open and close the inlet; and a restricting part provided on the sleeve for restricting diameter contraction of the C-shaped leaf spring beyond a predetermined inner diameter and for restricting a position of the notch in a region away from the inlet.

Abstract: A valvetrain suitable for an internal combustion engine of a type that includes a combustion chamber, a moveable valve having a seat formed within the combustion chamber, and a camshaft. The valvetrain includes a rocker arm assembly having a rocker arm and an electrical device that either configures the rocker arm assembly or provides position feedback for a part of the rocker arm assembly. The valvetrain includes a framework that fits around a spark plug tube while holding a component of a circuit that includes the electrical device in a position adjacent the rocker arm assembly. The position may place the component in contact with or very close to the rocker arm assembly. This framework structure may effectively utilize the available space under a valve cover while facilitating correct positioning of the component in relation to the rocker arm assembly.

Abstract: Various embodiments of the teachings herein include a method for controlling a cam using an ECU (electronic control unit) comprising: learning a holding region in which linearity is not ensured by increasing or decreasing a PWM signal while the cam maintains a holding state; based on the results of the learning, generating a final PWM signal; and transmitting the final PWM signal to an oil control valve. The final PWM signal comprises a sum of a minimum PWM signal for the cam to leave the holding region and a control PWM signal for the cam to reach a desired position.

Abstract: A radiator (RAD) enhanced geothermal system (EGS) may comprise a radiator vane heat exchanger (RVHE). The RVHE may be configured to be located in a plane defined by an injector well and a production well that is defined by a principal stress direction (S1) of a plurality of principal stress directions and a maximum horizontal stress component (SHmax). The RVHE may include one or more stacked laterals oriented along SHmax. Each stacked lateral, of the one or more stacked laterals, may include one or more vertical branches oriented along S1. The RVHE may be configured to extract energy from a non-hydrothermal source of energy.

Abstract: A compressor includes a compression mechanism, a driveshaft, and a motor. The compression mechanism is configured to compress a fluid to a discharge pressure. The motor is configured to rotate the driveshaft. The driveshaft is engaged with the compression mechanism and is fixed to rotate with at least a portion of the compression mechanism. The driveshaft includes a longitudinal aperture configured to receive the fluid at a suction pressure, and includes a flange that receives at least a portion of the compression mechanism. The flange and the compression mechanism define a fluid passage therebetween. The fluid at suction pressure is received within the fluid passage from the longitudinal aperture in the driveshaft.

Abstract: A Stirling cycle machine. The machine includes at least one rocking drive mechanism which includes: a rocking beam having a rocker pivot, at least one cylinder and at least one piston. The piston is housed within a respective cylinder and is capable of substantially linearly reciprocating within the respective cylinder. Also, the drive mechanism includes at least one coupling assembly having a proximal end and a distal end. The linear motion of the piston is converted to rotary motion of the rocking beam. Also, a crankcase housing the rocking beam and housing a first portion of the coupling assembly is included. The machine also includes a working space housing the at least one cylinder, the at least one piston and a second portion of the coupling assembly. An airlock is included between the workspace and the crankcase and a seal is included for sealing the workspace from the airlock and crankcase.

Abstract: A pneumatically driven fluid pump apparatus is disclosed which includes a pump casing having an inner wall, a pump cap secured at a first end of the pump casing, and a liquid discharge tube in communication with the pump cap and extending at least partially within an interior area of the pump casing toward a second end of the pump casing, and where fluid is admitted into the pump casing at the second end. The pressurized airflow causes a swirling flow of the liquid within the interior area of the pump casing that helps to clean the interior area of the pump casing by liquid scrubbing action to dislodge debris adhered within the interior area of the pump casing and remove the debris up through the liquid discharge tube and out from the fluid pump apparatus during a liquid eject cycle.

Abstract: A scroll compressor is disclosed. The scroll compressor may include a back pressure hole formed through a non-orbiting scroll and a back pressure chamber assembly such that a compression chamber and a back pressure chamber communicate with each other. A back pressure valve may be disposed inside of the back pressure hole and move along a longitudinal direction of the back pressure hole by a pressure difference between the compression chamber and the back pressure chamber, to vary a flow path area of the back pressure hole. The back pressure valve may include a valve body that extends in an axial direction and a plurality of holes formed through the valve body in the axial direction. With the configuration, pressure pulsation in the back pressure chamber may be suppressed or prevented.

Abstract: A screw spindle pump having a spindle housing, in which a drive spindle and at least one running spindle which meshes therewith are received in spindle bores, an outer housing which encloses the spindle housing, and a cover component which is placed axially onto the outer housing and on which both an axial fluid inlet port and a lateral fluid outlet port are provided, wherein the fluid inlet port communicates with a fluid inlet of the spindle housing and the fluid outlet port communicates with a fluid outlet of the spindle housing, wherein the cover component is fastenable to the outer housing in a plurality of marked rotational positions with a first pitch, and wherein the spindle housing is fastenable to the cover component and/or in the outer housing in a plurality of marked rotational positions with a second, smaller pitch.

Abstract: A slide cam system includes a camshaft comprising a carrier shaft with slide cam elements that each comprise a slotted switching member having a switching groove. The slide cam elements are displaceable axially relative to the carrier shaft by an actuator pin. A displacement element is arranged parallel with a longitudinal axis of the carrier shaft, and the displacement element is axially displaceable in a direction of the longitudinal axis. The displacement element has a first coupling pin arranged in a region of the first slide cam element and a second coupling pin arranged in a region of the second slide cam element. The coupling pins cooperate with a slotted switching member of the associated slide cam element such that as a result of the displacement element a movement initiated by the actuator pin of the first slide cam element can be transmitted to the second slide cam element.