Abstract: According to an example embodiment, a gas turbine engine assembly includes, among other things, a fan that has a plurality of fan blades. A diameter of the fan has a dimension D that is based on a dimension of the fan blades. Each fan blade has a leading edge. An inlet portion is situated forward of the fan. A length of the inlet portion has a dimension L between a location of the leading edge of at least some of the fan blades and a forward edge on the inlet portion. A dimensional relationship of L/D is between about 0.2 and about 0.45.

Abstract: The present invention relates to a reactor for the decomposition of ammonium dinitramide-based liquid monopropellants into hot, combustible gases for combustion in a combustion chamber, and a rocket engine or thruster comprising such reactor, wherein the reactor comprises a heat bed exhibiting catalytic activity.

Abstract: An ignition system of a combustion engine has a start-up adjustment curve with a maximum rotational speed, an operating adjustment curve and a switch-over device for switching between curves. The start-up adjustment curve is selected in the case of a start-up of the combustion engine. A rotational speed curve is divided into adjacent cycles. The start of the first cycle is the point in time of the second ignition after the start-up and the start of the subsequent cycles is in each case the point in time of ignition at which the rotational speed is less than in the case of the subsequent point in time of ignition. The criterion for switching to the operating adjustment curve is whether the average of the rotational speeds of successive cycles differs by less than a first tolerance value.

Abstract: A choke removal mechanism for an autochoked engine includes an actuator arm which is configured to have an actuated state and an idle state, an actuator which is configured to be mechanically coupled to the actuator arm, a choke which is configured to have an open state and a closed state, and a choke spring which is configured to be mechanically coupled to the choke and the actuator arm, where the choke spring is configured to mechanically link the actuator arm to the choke such that when the actor arm is in the actuated state the choke is in the open state and when the actuator arm is in the idle state the choke is in the closed state.

Abstract: Methods and system are provided for distinguishing fuel tank vacuum generation due to canister purge valve degradation from vacuum generation due to canister vent valve degradation. A fuel tank vacuum level is monitored after sealing the fuel tank from the atmosphere following an engine pull-down. If there is an ensuing change in fuel tank vacuum, canister purge valve degradation is determined, else, canister vent valve degradation is determined.

Abstract: Methods and systems are provided for diagnosing an intake oxygen sensor. In one example, a method may include indicating degradation of an intake oxygen sensor based on a first time constant of an output of the intake oxygen sensor and a second time constant of an output of a throttle inlet pressure sensor. The method may further include adjusting EGR flow based on the output of the intake oxygen sensor and the output of the throttle inlet pressure sensor when the intake oxygen sensor is not degraded.

Abstract: A dedicated exhaust gas recirculation (“D-EGR”) system of an internal combustion engine can include an exhaust recirculation passage, and a rotary valve. The recirculation passage can be coupled for fluid communication with an outlet of a D-EGR combustion chamber. The rotary valve can have a housing and a rotor. The housing can have a valve inlet coupled to the recirculation passage to receive exhaust gases from the recirculation passage, and a valve outlet coupled to an intake passage of the ICE to deliver exhaust gases from the rotary valve to the intake passage. The rotor can be disposed within the housing and rotatable relative to the housing. The rotor and housing can define a plurality of valve chambers.

Abstract: A fuel cooled cooling air heat exchanger includes a fuel injector and an airflow body. The fuel injector has a fuel flow passage formed therein that includes a fuel inlet port and a fuel outlet port. The airflow body is coupled to and surrounds at least a portion of the fuel injector. The airflow body has an inner surface that is spaced apart from the fuel injector to define an airflow passage between the airflow body and the fuel injector, and the airflow passage includes an air inlet port and an air outlet port.

Abstract: A snap-in spring clip assembly includes a discrete clip cleat and a fastener carried on the clip cleat. The discrete clip cleat includes a body having a base, a first rib depending from the base and a second rib depending from the base. The first and second ribs each include at least one resilient locking arm that allows the discrete clip cleat to be snapped into and retained in a desired position.

Abstract: A flexible porous non-pollutive tube, wherein the walls of the tube are made by tapes formed by interlaced textile fibers, and to which activated charcoal is added, in agglomerate, powder or granulated form, and the textile tapes being wound over the charcoal and glued among the charcoal in the helical direction, forming an air conducting acoustic flexible helical pipe which is a part of a combustion engine's intake system used by the automobile industry, and adding the activated charcoal in the walls or in the pipe's external or internal lining.

Abstract: A filter element, and filter apparatus, include a filter pack, a seal member, and a seal support frame operatively connecting the seal member to the filter pack. The seal support frame includes an annular extension, which is preferably canted at an oblique angle to a longitudinal axis, for supporting the seal member. The seal support frame also preferably includes a first end thereof including the annular extension, and a second end thereof spaced from the first end thereof along the longitudinal axis, with the first and second ends of the seal support frame joined by a hub of the outer peripheral sidewall of the seal support frame to define a cavity within the seal support frame for receiving the filter pack. The first and second ends of the seal support frame, and the filter pack are preferably joined and sealed to one another by a single bead of adhesive.

Abstract: Methods and systems are provided for the integration of a fuel level sensor and a fuel pressure sensor in a fuel tank within a fuel system. In one example, an integrated fuel pressure and fuel level sensor for a fuel tank may include a float arm of the fuel sensor coupled to a floating body and a pressure sensor (e.g., a fuel tank pressure transducer) coupled to the floating body, the integrated fuel pressure and fuel level sensor adapted to simultaneously measure fuel level and fuel vapor pressure of the fuel tank.

Abstract: A method of reducing nitrogen oxide emissions, the method comprising (i) injecting a petroleum-derived diesel fuel composition having: (a) a sulfur content of less than 10 ppm; (b) a flash point of greater than 50° C.; (c) a UV absorbance, Atotal, of less than 1.5 as determined by the formula comprising Atotal=Ax+10(Ay) wherein Ax is the UV absorbance at 272 nanometers; and wherein Ay is the UV absorbance at 310 nanometers; (d) a naphthene content of greater than 5 percent; (e) a cloud point of less than ?12° C.; (f) a nitrogen content of less than 10 ppm; and (g) a 5% distillation point of greater than 300 F and a 95% distillation point of greater than 600 F, in an advanced combustion engine; (ii) combusting the petroleum-derived diesel fuel in (i) in a combustion chamber of a non-spark ignited engine, wherein nitrogen oxide emissions are lower than those nitrogen oxide emissions when a conventional diesel fuel is employed in a non-spark ignited engine.

Abstract: There are provided a multi-layer piezoelectric element in which an increase of oxygen vacancies in an electric-field concentration part of piezoelectric layers is suppressed and a decrease of an amount of displacement is suppressed, as well as to provide a piezoelectric actuator, an injection device and a fuel injection system provided with the multi-layer piezoelectric element. A multi-layer piezoelectric element includes a stacked body composed of piezoelectric layers and internal electrode layers which are stacked on each other, and a resin which evolves OH? when being heated. Accordingly, it is possible to obtain a multi-layer piezoelectric element in which an increase of oxygen vacancies in an electric-field concentration part of piezoelectric layers is suppressed and a decrease of an amount of displacement is suppressed.

Abstract: An electromagnetic actuation system includes an electrical coil, a magnetic core, an armature, a controllable bi-directional drive circuit for selectively driving current through the coil in either of two directions, and a control module providing an actuator command to the drive circuit. Current is driven though the electrical coil in a first direction when an actuation is desired. When the actuation is not desired current is driven through the electrical coil including in a second direction sufficient to reduce residual flux within the actuator below a level passively attained within the actuator at zero coil current.

Abstract: A valve for metering a fluid, which is used in particular as a fuel injector for internal combustion engines, includes an electromagnetic actuator and a valve needle, which is actuatable by the actuator, and is used for actuating a valve closing body, which interacts with a valve seat surface to form a seal seat. An armature of the actuator has a through hole, through which the valve needle extends. The armature is guided on the valve needle movably and with clearance. Furthermore, a stop surface which is fixed in place with respect to the valve needle is provided, on which the armature strikes with its end face in conjunction with an actuation. During an axial alignment of the armature with respect to the valve needle, an angle offset is predefined between the stop surface and the end face of the armature.

Abstract: A partitioning portion partitions a fuel chamber into a first space, which receives a pressurizing chamber forming portion and is communicated with an inflow pipe, and a second space, which is communicated with an outflow pipe. A flow passage forming portion extends from the partitioning portion toward the first space side and forms a communicating flow passage, which communicates between the first space and the second space. Thereby, vapor contained in the fuel, which is returned from a pressurizing chamber to the fuel chamber, is accumulated as bubbles in the first space, which receives the pressurizing chamber forming portion. The first space is communicated with the outside through the communicating flow passage and the second space. Therefore, outputting of air bubbles of the first space to the outside can be effectively limited in comparison to a case where the fuel chamber is directly communicated with the outside.

Abstract: A high-pressure pump has a metering valve and a valve stopper. The stopper has a regulation portion which an end surface of the valve is brought into contact with. An outer diameter of the regulation portion is equal to an outer diameter of the outer peripheral surface of the valve. A cylindrical sleeve is disposed around the regulation portion. When the end surface of the valve is in contact with the regulation portion, the sleeve covers a tapered surface of the valve.

Abstract: A motor vehicle, such as a truck, battery charge monitoring and recharging system. The truck engine start/stop system initiates a battery recharge cycle based on programmable battery voltage levels. The system allows the user to individually program the appropriate voltage recharge levels dynamically to meet optimal standards based on location, environment, and other vehicle settings.

Abstract: An electricity supply device that reduces a delay in starting an engine. A vehicle includes a starter motor for starting an engine, a start magnet making and breaking connection between the starter motor and a battery, a fuel pump, and a control unit controlling fuel injection and ignition timing of the engine. An electricity supply device of the vehicle includes: a main relay making and breaking connection between a load of the vehicle, the load not including the starter motor, the start magnet, and the battery; a clutch switch connected to the battery, and set in a conducting state when a clutch lever is gripped; a start switch connected between the clutch switch and a coil of the start magnet; and a diode allowing a current to flow from a point of connection between the clutch switch and the start switch to a coil of the main relay.

Abstract: A heating device for a drive unit in a motor vehicle includes at least one heating element and at least one sensor by means of which a predetermined behavior of the vehicle user preceding the start of the drive unit can be detected. The sensor interacts with the heating element in such a manner that it is switched on when the sensor detects the predetermined behavior. The predetermined behavior may be one or more of the following: inserting an ignition key in an ignition lock of the motor vehicle; actuating a shifting, clutch or braking device of the motor vehicle; or a behavior through which an anti-theft device of the motor vehicle can be triggered.

Abstract: An ignition device for engine according to the present invention performs continuous spark discharge of an ignition plug by using a multiplex signal, an integration signal or a control signal. In the multiplex signal, discharge continuous signals IGW#1 to 4 for cylinders of the engine have been multiplexed. In the integration signal, a discharge continuous signal IGW and a secondary current instruction signal IGA have been added to an ignition signal IGT. In the control signal, the secondary current instruction signal IGA has been added into the multiplex signal or the integration signal. This structure can reduce the total number of signal lines connected between an ECU and a controller, and further reduce a signal line to transmit the secondary current instruction signal IGA.

Abstract: An ignition apparatus inputs energy during a predetermined energy input period after the interruption of a primary electric current by an ignition switch and a discharge of an ignition plug caused by a secondary electric current. Moreover, the ignition apparatus includes a blow-off detection unit that detects, during the energy input period IGW after the start of the discharge by the ignition plug, occurrence of blow-off of the discharge. When the secondary electric current I2 drops below a blow-off detection electric current threshold value Ibo at a time instant tbo in a “second region” where it is impossible to perform a re-discharge after blow-off, the blow-off detection unit determines that blow-off has occurred and the ignition apparatus stops the energy input from an energy input unit to an ignition coil. By preventing unnecessary energy input, it is possible to suppress unnecessary electric power consumption and wear of electrodes of the ignition plug.

Abstract: A laser ignition device for an internal combustion engine can include a laser generator, a housing, and a window. The laser generator can emit a pulse of laser light. The housing can be coupled to the internal combustion engine. The housing can have a first end and a second end. The second end can be proximate to a combustion chamber of the internal combustion engine and can define an aperture through which the laser light is permitted to exit the housing into the combustion chamber. The window can be coupled to the second end of the housing and cover the aperture. The window can permit the laser light to pass through the window and into the combustion chamber. The window can have a rounded outer surface.

Abstract: Hydrostatic adjusting device of a hydraulic machine, the swept volume of which can be adjusted by way of a servo adjusting unit, having a control unit which has a control cylinder which has at least one inlet for pressurized hydraulic fluid, at least one servo connector for a connecting line to the servo adjusting unit, and at least one outlet to a hydraulic fluid collecting region. A control piston is arranged in the control cylinder, which control piston can be displaced by means of at least one control piston actuator and has control edges. In interaction with control edges which are configured in the control cylinder, the inlet or the outlet can be alternately connected hydraulically to the connecting line, whereby the pressure which prevails in the connecting line can be returned hydraulically via a control line to at least one end side of the control piston.

Abstract: A method of aligning shear webs for the construction of a wind turbine blade is provided. The method comprises providing one or more jigs (402), each configured to receive one or more spacer elements (701) and providing one or more spacer elements (701). First and second shear web panels are placed on the one or more jigs (402) to align them. The first and second shear web panels are restrained relative to each other and are separated by the one or more spacer elements. The first and second shear web panels are then removed together with the one or more spacer elements from the jig. A corresponding apparatus is also provided.

Abstract: Disclosed are a system, a method and an apparatus of diffuser nozzle augmented wind turbine. In one embodiment, a method includes attaching a nozzle with a streamlined opening to a diffuser to direct an air flow into a wind turbine. In addition, the method includes increasing a wind speed approaching a set of turbine blades within a shrouded wind turbine configuration. The method also includes recirculating the air within the shroud configuration to increase an output power generated through the wind turbine. The system is composed of diffuser and nozzle integrated and non-integrated with and without a flange. In one embodiment, a method includes increasing a pressure differential of a wind turbine.

Abstract: A rotor blade (5) of a wind turbine, which has a profile (1-4) having an upper side (suction side) (7) and an underside (pressure side) (8). The profile (1-4) includes a camber line (21, 25) and a chord (18) between a leading edge (10) and a trailing edge (11) of the profile (1-4). The profile (1-4) has a relative profile thickness of more than 45%. At least one vortex generator (50, 50?, 50?, 50??) is disposed, in the region of the profile (1-4), on the suction side (7) of the rotor blade (5). The profile (1-4) is provided with a blunt trailing edge. And, The thickness of the trailing edge is between 15% and 70% of the chord length.

Abstract: A wind power generator having blades which are detachably mounted on a hub whereby the blades can be easily and efficiently removed and replaced as necessary.

Abstract: A method for adjusting the azimuth of a wind power plant, in which, during an azimuthal rotation of a machine housing with a rotor on a tower of the wind power plant, a constant residual pressure for generating a constant residual holding torque is applied to at least one azimuth braking device. Also an azimuth adjustment system for a wind power plant and to a wind power plant. In the disclosed method, the constant residual pressure and/or the constant residual holding torque are/is set as a function of at least one wind speed parameter before commencement of the azimuthal rotation, and the residual pressure and/or the residual holding torque are/is not changed during the azimuthal rotation, in particular during energization of azimuth drive motors.

Abstract: Wind turbine comprising a nacelle with a generator and wind turbine blades for driving the generator, a tower supporting the nacelle wherein the nacelle is rotatable about a vertical axis an azimuth drive for rotating the nacelle around the axis, said azimuth drive comprising a plurality of asynchronous yaw motors and an azimuth controller with a frequency unit for controlling the plurality of asynchronous yaw motors, wherein the azimuth controller is arranged to connect all of the plurality of asynchronous yaw motors to the one frequency unit in a rotating mode and to connect only a subset of the plurality of asynchronous yaw motors from the one frequency unit in a locking mode.

Abstract: A vertical wind generator with at least two blades which are rotatably mounted with regard to a central vertical rotation axis, wherein the blades each comprise a main blade with a longitudinal side and a fore blade attached to the longitudinal side of the main blade, wherein the fore blade is movable between a first position and a second position each with regard to the main blade.

Abstract: Method for avoiding voltage instability in an electrical grid of an offshore wind park, the offshore wind park electrical grid being connected at a first end of a high voltage alternating current (HVAC) transmission and the main land electrical grid being connected at a second end of the HVAC transmission, each of the wind turbines being connected to the wind park electrical grid, the method comprises determining a main land phase angle at or near the second end of the HVAC transmission; measuring an individual wind turbine phase angle at one or more wind turbines; determining the difference between each of the measured individual wind turbine phase angles and the main land phase angle; and determining whether the difference between one of the measured individual wind turbine phase angle and the main land phase angle exceeds a threshold phase angle difference.

Abstract: The present disclosure addresses the problem of ensuring that wind turbine voltage levels within a wind power plant do not exceed predetermined overvoltage and/or undervoltage protection levels. In particular, the present disclosure relates to adjustment of an output voltage level of a wind power plant in order to protect an internal power plant grid from overvoltages.

Abstract: A method of making a wind turbine blade (10) having a metallic lightning receptor (110) is described. The method comprises configuring a wind turbine blade (10) mold assembly (100) such that a clearance region (120) is defined between a mold surface (116) of at least one mold half (112, 114) and a majority of a metallic lightning receptor component (110) when the mold assembly (100) is closed, such that contact between that mold half (112, 114) and the metallic lightning receptor component (110) is substantially avoided. In certain embodiments of the invention, one or both mold halves (112, 114) are truncated such that the metallic lightning receptor component (110) projects from the mold (100) when the mold (100) is closed.

Abstract: Disclosed is a wind turbine, which comprises a rotatable structure being coupled to a hub of the wind turbine and to a generator rotor comprising a brake disc, a stationary structure being coupled to a generator stator and comprising a stator frame and a safety bearing element. The rotatable structure is rotatably coupled to the stationary structure, wherein the stator frame comprises a brake mounting section to which a calliper brake is mountable such that the brake disc is breakable by the mounted calliper brake. The safety bearing element is mounted to the brake mounting section such that the brake disc is in slidable contact with the safety bearing element if a distance between the brake mounting section and the brake disc is reduced below a predetermined reference value.

Abstract: Rankine Cycle power generation facility having a plurality of thermal inputs and at least one heat sink, where the heat sink includes a thermal chimney or a natural convective cooling tower. In a preferred embodiment, the power facility generates electricity and/or fresh water with a zero carbon footprint, such as by using a combination of solar and geothermal heating to drive a Rankine Cycle heat engine. In one embodiment, a thermal stack is mounted in the base of the thermal chimney, the thermal stack for using waste heat from the plurality of thermal inputs to drive a natural convective flow of air in the thermal chimney, the convective flow having sufficient momentum to drive additional power generation in an air turbine mounted in the chimney and to drive an evaporative cycle for concentratively extracting fresh water from geothermal brines.

Abstract: A piston pump for a high-pressure cleaning appliance is provided, which includes a plurality of pistons that are movable back and forth and each of which enters a pump chamber and is displaceably held at a piston guiding part. The piston guiding part has a supporting wall on which a plurality of guiding elements, each of which guides a piston, are disposed. In order to be able to produce the piston pump in a more cost-effective manner, it is proposed according to the invention that the supporting wall is curved.

Abstract: A hydraulic machine comprising a drum (12) rotated by an input shaft, comprising cylinders (14) distributed around the shaft, each receiving a piston that slides on the basis of the rotation of the shaft, each cylinder opening at an opening (30) on a transverse face of the drum bearing on a plate having inlet and outlet manifolds, the openings (30) comprising, relative to the cylinders (14) of same, angular offsets comprised within a total offset range, characterized in that the offsets of the openings (30) are disposed at one end or the other of this offset range.

Abstract: In a reciprocating pump comprising a reciprocating member adapted to reciprocate as driven by a drive unit contained in a drive unit case, so as to perform a pumping action such that a liquid in use is aspirated into a pump chamber formed axially in front of the reciprocating member and pushed out under pressure and further comprising a high-pressure seal in slidable contact with an outer peripheral surface of the reciprocating member axially behind the pump chamber so as to prevent the liquid in use from leaking out when a high pressure is generated in the pump chamber, a flow path for the liquid in use to flow so as to bathe the drive unit therewith is provided within the drive unit case, while the rear side of the high-pressure seal is in contact with the liquid in use flowing through the drive unit case.

Abstract: A pump system includes a particulate consolidator pump that has a pump outlet. A duct is coupled to the pump outlet. The duct has a wall that is coupled with an oscillator. The oscillator is operable to oscillate the wall at a controlled frequency. The controlled frequency is selected with respect to breaking static bridging of particulate in the duct due, at least in part, to consolidation of the particulate from a downstream check valve.

Abstract: A compressor includes a plurality of gas bearing conduits and a plurality of gas bearing control valves. Each gas bearing control valve of the plurality of gas bearing control valves is coupled to a respective one of the plurality of gas bearing conduits. The gas bearing control valves are configured for permitting fluid flow through the gas bearing conduits when a piston of the compressor is positioned adjacent the gas bearing conduits in a chamber of the compressor.

Abstract: A starting valve (100) for a fluid operating machine (200) for a vacuum system (1000). The starting valve (100) comprises:—a valve body (10) with an opening (17) to let a gas in; and an actuating piston (13) splined on a stem (16) free to slide in a guide (18A). The actuating piston (13), with a portion of the valve body (10), defines a chamber (30). The actuating piston (13) is subject to the action of a deformable diaphragm (15). A calibrated throttling hole (16B) is provided in series with a through hole (16A) in line with the stem (16) to establish a fluid communication between the chamber (30) and a fluid-dynamic line (500) of the vacuum system (1000). A shutter (20) is furthermore provided also splined on the stem (16). The shutter (20) closes a gas passage opening (10B) as a function of the pressure difference between the chamber (30) and the fluid-dynamic line (500).

Abstract: A medical infusion pump pressure plate alignment system and components that include a chassis, a sensor module, and a pressure plate in various embodiments. The pressure plate has a first end pivotally mounted to the chassis of the control module for pivotal retention and a second end selectively mounted to the chassis of the control module. The pressure plate, hooks or rail contain recessed or projection features configured for receipt of the complementary features of the sensor module. Additional alignment features can include a retaining component incorporated with the hook, a guide feature on the outer surface of the pressure plate, and a kickstand feature attached to the rail.

Abstract: In a method for controlling the operation of a compressor, the compressor is switched off by a controller in order to prevent thermal damage if an estimated temperature value calculated by the controller exceeds an upper threshold value. The controller calculates a cooling function as a state variable utilizing the estimated temperature value, the cooling function representing the chronological course of the cooling of the compressor. The controller determines the cooling function based on at least one first and one second estimated temperature value which are associated with points of the compressor that are at spatial distances to each other. The calculation of the cooling function is based on a temperature difference between the first and second estimated temperature values.

Abstract: An oil pressure control device for supplying oil pressure by rotating a hydraulic pump, by means of a motor, comprises an oil pressure sensor; a speed instruction operation unit for outputting a speed instruction value, based on a difference between an oil pressure determination value from the oil pressure sensor and an oil pressure instruction value; a torque instruction value operation unit for calculating a torque instruction value, based on a difference between a speed determination value and the speed instruction value; and a current control unit for controlling a current of the motor, based on the torque instruction value, and adds the load variation compensation speed outputted from the load variation compensation unit and the speed instruction value.

Abstract: The subject matter of this specification can be embodied in, among other things, a method that includes a gear pump includes gears having a gear root diameter and teeth having an addendum and pressure angle. A housing includes a fluid inlet and discharge, bearings configured to position the gear teeth in intermeshing contact across a fluid dam. The fluid dam includes a first face arranged at an angle to a split line, spaced apart from a center line at the split line a first distance towards the inlet, and extending from the first gear root diameter away from the center line to the first gear root diameter, and a second face arranged approximately perpendicular to the split line, spaced apart from the center line at the split line a second distance towards the outlet, and extending between the first gear root diameter and the second gear root diameter.

Abstract: The present invention is directed to a pump and motor assembly assembled in a waterproof enclosure with external threaded connections for pump suction and discharge. The motor can be directly connected to a flexible coupling to a bi-rotational internal gear pump, having self-adjusting mechanical seals and cast iron housing. The pump and motor assembly can be mounted on a sliding base for easy access. Flex hoses can be used to connect pump suction and discharge to couplings attached to the pump enclosure. A discriminating leak detector can be installed at the low point of the pump enclosure to detect and annunciate the presence of oil and/or water.

Abstract: A rotary pump exhibiting an adjustable specific delivery volume, the rotary pump including a housing featuring a delivery chamber for a fluid feed; a delivery rotor in the delivery chamber; a setting structure which surrounds the delivery rotor, a spring exerting a spring force which acts on the setting structure in a first setting direction; a setting pressure chamber for applying a setting pressure of a setting fluid, which acts counter to the spring force in a second setting direction, to the setting structure; and a housing abutment, wherein the setting structure includes: a recess on a circumference; and a counter abutment for the housing abutment in the recess.

Abstract: A rotor assembly having a plurality of rotor plates mounted to a shaft, and methods of construction for a rotor assembly are disclosed. Each rotor plate in the assembly may be provided with a central opening extending between the first and second sides through which the shaft extends. In one aspect, the rotor plates are provided with a plurality of lobes extending away from the central opening, wherein each of the lobes has a lobe opening extending through the thickness of the plates. In one embodiment, the rotor plates are rotationally stacked to form a helical rotor.