Abstract: A method for detecting variations between the quantities of fuel injected into cylinders by fuel injection devices and correcting the fuel injection quantity variation while minimizing the computational load on a drive device and the level of performance required of a pressure sensor includes a drive device for fuel injection control, wherein movable valves are driven so that predetermined quantities of fuel are injected by applying, for the duration of a set energization time, a current that will reach an energization current to solenoids of a plurality of fuel injection devices which open/close fuel flow paths. The drive device is characterized in that the set energization time or energization current is corrected on the basis of a pressure detection value from a pressure sensor that is attached to a fuel supply pipe disposed upstream of the plurality of fuel injection devices.

Abstract: A method for starting an internal combustion engine with a fuel tank and a low-pressure pump which pumps gasoline out of the fuel tank at a low-pressure to a high-pressure pump that pumps the gasoline at a high-pressure to injectors of the internal combustion engine. An electronic controller is provided for controlling and/or regulating the low-pressure pump, the high-pressure pump, and the injectors. After a start pulse for the internal combustion engine, the method: checks whether a formation of vapor bubbles in the gasoline is possible on the low-pressure side during a hot start. If not possible, then the normal low-pressure is set. If possible, then a low pressure which is high enough that the formation of vapor bubbles is not possible on the low-pressure side is set, and the normal low-pressure is set after a period of time. The problem of vapor bubble formation is prevented in an inexpensive or cost neutral manner via the method.

Abstract: Methods and systems are provided for an in-cylinder thermal energy recovery device that utilizes the Rankine Cycle to recover energy from exhaust gasses that may be used to produce additional work in the vehicle. In one example, a method may include outfitting the head area of each cylinder of an engine with a tube array comprising one or more tubes passing through the combustion chamber of the corresponding cylinder. Each tube array may receive an injection of working fluid that is based, in part, on the temperature of the tube array's corresponding cylinder, which may then be utilized to recover heat energy.

Abstract: An engine cooling apparatus includes a mechanical water pump having a suction hole and N discharge holes (N is an integer not less than two), N water jackets that are arranged in an engine and correspond to the N discharge holes, N joint passages, each of which joins one of the N discharge holes to the associated water jacket, a return passage that returns coolant to the suction hole after the coolant has passed through the N water jackets and has merged in a merging portion, a coolant stopping mechanism that blocks return flow of coolant through the return passage, and N communication passages each of which allows the corresponding one of the N joint passages to communicate with the suction hole while bypassing the N water jackets and the coolant stopping mechanism.

Abstract: Systems are provided for an integrated exhaust manifold that may be used in a variety of engine systems. In one example, an integrated exhaust manifold may include a central axis running from an inlet end to an outlet end of the integrated exhaust manifold and two exhaust outlets arranged at the outlet end and coupled to a common collecting line, the two exhaust outlets symmetrically positioned across the central axis and having a same diameter, where each exhaust outlet of the two exhaust outlets has a passage axis arranged parallel to the central axis. A first exhaust outlet of the two exhaust outlets may be permanently blocked and a second exhaust outlet of the two exhaust outlets may be coupled to an exhaust system of an engine system.

Abstract: An intake cam is positioned between first and second shaft supports that support an intake camshaft. An exhaust cam is positioned between third and fourth shaft supports that support an exhaust camshaft. An ignition plug unit extends between the intake camshaft and the exhaust camshaft and inward of the intake cam and the exhaust cam with a cylinder axis defining a reference position. A cylinder head includes a joint plane that is joined to a cylinder body. In a case where a virtual plane is defined by the joint plane and is perpendicular or substantially perpendicular to the cylinder axis, a distance between a portion, closest to the virtual plane, of the intake camshaft and the virtual plane is less than a distance between a portion, farthest from the virtual plane, of the intake port and the virtual plane.

Abstract: A control system for a variable area fan nozzle (VAFN) having a plurality of petals is disclosed. The control system may include at least one fiber optic shape sensor extending along at least one of the plurality of petals, and a light source operatively connected to the at least one fiber optic shape sensor. The control system may further include a receiver operatively connected to the at least one fiber optic shape sensor. The control system may further include a VAFN control unit in operative communication with the plurality of petals and the receiver. The VAFN control unit may be configured to receive a signal from the receiver indicative of the measured strain along the at least one fiber optic shape sensor, and calculate a nozzle area of the VAFN based on the measured strain.

Abstract: A thrust vector control actuator is provided including a ram, a first plate housed within the ram, a second plate housed within the ram, and a dividing wall housed within the ram. The dividing wall being located between the first plate and the second plate. The dividing wall defines a first chamber within the ram comprising the first plate and a second chamber within the ram comprising the second plate. The actuator also includes an output rod housed within the ram. The output rod having a first end and a second end. The second end is configured to operably connect to an output link. The actuator also includes a load relieving mechanism located within the ram. The load relieving mechanism configured to operatively connect the ram and the output rod. The load relieving mechanism is configured to absorb at least one transient load on the output rod.

Abstract: Methods and systems are provided for introducing water into an intake manifold of an internal combustion engine. In one example, the system may include a water container, a water inlet for inputting water into the intake manifold, and a throttle valve that is arranged between an intake manifold inlet and the internal combustion engine, with the water container arranged at a higher point than the water inlet and the water inlet opening into the intake manifold downstream of the throttle valve. A switchable valve is arranged in fluidic connection with both the water container and the water inlet, with the result that it can enable or interrupt the introduction of water into the intake manifold and also create a Venturi effect at the water inlet, which draws water from the water container.

Abstract: A method is presented, comprising, during a first condition, including an active refueling event, receiving an indication of hydrocarbon breakthrough from the fuel vapor canister; and flowing refueling vapors into an intake manifold responsive to the indication of hydrocarbon breakthrough. Flowing refueling vapors into an intake manifold traps the vapors there until engine start-up, when the vapor can be combusted by the engine. In this way, refueling emissions may be reduced, even if the fuel vapor canister is saturated prior to, or during the refueling event.

Abstract: A system includes a diagnostic module that selectively performs a purge valve leak diagnostic to diagnose a leak in a purge valve in a fuel system of a vehicle. Performing the purge valve leak diagnostic includes determining a level of vacuum in a fuel tank. A control module determines at least one operating condition associated with the vehicle. The at least one operating condition corresponds to an operating condition that affects the level of vacuum in the fuel tank. The control module, based on the at least one operating condition, selectively modifies the purge valve leak diagnostic. Selectively modifying the purge valve leak diagnostic includes at least one of preventing the diagnostic module from performing the purge valve leak diagnostic, preventing the diagnostic module from completing the purge valve leak diagnostic, and causing the diagnostic module to indicate that a result of the purge valve leak diagnostic was indeterminate.

Abstract: An Exhaust Gas Recirculation (EGR) Valve is disclosed including a housing having a first side configured to be coupled with a fresh air inlet, a second side configured to be coupled with an outlet, and an exhaust-gas inlet defined at a bottom of the housing. The housing may include one or more inner surfaces defining at least one path to direct a condensate, when present at any point on a bottom surface of an inside of the housing, to a low point within the housing directed by gravity. The outlet may be configured to be fluidically coupled with a turbo compressor.

Abstract: A primary plate for a cooling plate includes a plate having a first surface, a second surface, a recess formed therein, a plurality of first openings formed therethrough, a plurality of second openings formed therethrough, and a plurality of apertures formed through the plate adjacent a perimeter thereof and configured to receive a plurality of coupling means. Each of the plurality of first openings and the plurality of second openings is configured for receiving ends of tubes.

Abstract: A compression limiting fastener assembly includes a plastic intake manifold having an attachment flange and a molded and tuned compliance ring formed on the attachment side of the flange, a plastic cam cover having a threaded attachment insert, a compression limiting bolt fastener for attaching the intake manifold to the cam cover, and a spring stem compression limiter that, when fully threaded into its attachment position, prevents over-compression and possible damage to the plastic components while providing 100% compression. The compliant ring of the intake manifold is concentric with a fastener bore formed through the intake manifold attachment flange. The spring stem compression limiter includes a tubular body having an upper end and a lower end. A spring stem flange is attached to the upper end of the tubular body while a depth limiting flange is attached to the lower end.

Abstract: According to a first aspect of the invention, there is provides a turbo machinery assembly for an internal combustion engine, the turbo machinery assembly including: a bypass flow compensated Mass Air Flow (MAF) sensor for measuring the amount of intake air; exhaust gas or engine driven compressor operable to compress an input stream of air, the compressor having a compressed air outlet which branches into at least a first branch and a second branch; a first branch of said air outlet being connected to an engine, having a charge air cooler, with the second branch adding a secondary path and so as to enable said second branch of said air outlet to operatively control the intake manifold pressure and charge mass flow rate.

Abstract: An induction system for a supercharged internal V-type combustion engine includes a monolithic continuous unitary casting housing a supercharger with a rotor and gear assembly operative to discharge pressurized air to a common bounding receiving plenum, through a first slidably-removable intercooler providing a first cooling, and then to a pair of second side intercoolers providing a second cooling within the bounded plenum and in fluid communication therewith. First and second intercoolers are secured within the monolithic housing. The monolithic housing provides a robust and stable housing of light weight and allows an exterior air cooling as well. Side walls of the supercharger are separate from and are spaced from air intake runners of a cylinder block. Air in the plenum is additionally cooled by convective surface cooling while being guided in an appropriate direction.

Abstract: A gas compressor assembly configured to pressurize an airflow received from the ambient for delivery to an internal combustion engine having a cylinder includes a compressor housing. A compressor wheel is disposed inside the compressor housing and configured to pressurize the airflow. A compressor bypass is configured to direct the pressurized airflow away from the cylinder. A pressure relief valve is configured to selectively open and close the compressor bypass to thereby limit pressure of the pressurized airflow and minimize surge of the compressor wheel. A baffle arranged inside the compressor bypass is configured to dissipate energy of a sound wave generated by the pressurized airflow upon an initial opening of the pressure relief valve. An internal combustion engine employing such a turbocharger is also disclosed.

Abstract: A fuel consumption-measuring system includes a feed line, a first pump which pumps fuel from a tank via the feed line to a consumer, a fuel consumption-measuring device in the feed line, a first return line which branches off at the consumer and opens into the feed line between the fuel consumption-measuring device and the consumer, a second return line which branches off from the feed line between the first pump and the fuel consumption-measuring device which opens into the tank, a branch which leads from the feed line into the second return line, a heat exchanger, and a flow device arranged in the first and second return lines. The flow device provides an equal volume flow at an opening of the first return line into the feed line and at the branch leading from the feed line into the second return line.

Abstract: A filter structure for fuel fluids, comprising a first filter wall, a coalescing second filter wall located downstream of and in contact with the first filter wall, and a hydro phobic wall, in which the first filter wall comprises a first porous layer, realised in a material having a receding contact angle ? rec comprised between 30° and 80°; the coalescing second filter wall comprises a second porous layer made of a material having a greater porosity than the first filter wall; the hydrophobic third wall comprises a layer located at a distance from the second layer.

Abstract: A filter structure (100) for fuel fluids comprising a first filter wall and a hydrophobic wall, characterised in that the hydrophobic wall is made of a material having a mean static angle that is equal to or greater than 90°, a receding contact angle ?rec that is less than 90° and a hysteresis H, between an advancing contact angle ?av and a receding contact angle ?rec, that is comprised between 50° and 80°.

Abstract: A water separator for water contained in fuel has a water separator housing with a separator element. A water collecting chamber is arranged in operation of the water separator below the separator element. A water collecting chamber through opening fluidically connects the water collecting chamber with the separator element. A drainage through opening has a first end which leads, for draining water from the water separator, out of the water separator. A second end is connected fluidically by an overflow valve to the water collecting chamber. The overflow valve has a float closing off a connection between drainage through opening and water collecting chamber when a water filling level has not reached the overflow valve. The float has an average density of 700 kg/m3 to 1,000 kg/m3 so that the float, when the water filling level is reached, opens the connection between water collecting chamber and drainage through opening.

Abstract: In a dual-fuel fuel injector comprising a first injector unit for a first injector operating mode using a first main fuel and a second injector unit for a second injector operating mode using a second main fuel and an injector-reservoir, the reservoir is connected at one end to a first main fuel supply and at the opposite end to a second main fuel supply with a separating element disposed in the injector reservoir so as to be movable between the opposite ends so that, in each operating mode, the full volume of the reservoir can be used for accommodating the respective main fuel.

Abstract: In a multi-fuel injector for an internal combustion engine, including a housing with a nozzle needle movably disposed therein between a closed position in which the nozzle needle blocks a discharge of fuel from a collection chamber, to which a first fuel is supplied, above the nozzle needle, a control chamber is arranged to which a high pressure second fuel is supplied which acts on the nozzle needle to bias it into a closed position, and a control valve is provided in a pressure release line extending from the control chamber for a controlled release of the second fuel from the control chamber by opening the control valve so as to relief the closing pressure on the nozzle needle in order to permit lifting of the nozzle needle from the closed position for discharging the fuel from the collection chamber.

Abstract: A fuel injection valve includes: a holder which accommodates a valve body, has a surface magnetically facing the outer periphery of an armature, and is joined to a core; a housing which is press-fitted onto the outer periphery of the holder and accommodates a coil; and a cap which covers the fuel upstream side of the coil in a lid shape and is press-fitted onto the outer periphery of the core. The lower surface of the cap is brought into contact with the upper end surface of the housing in a radially slidable state and then an outer peripheral portion of a contact surface between the cap and the housing is joined by laser welding.

Abstract: The disclosure relates to a fuel injection valve that includes a valve needle, a closing spring applying a spring force to the valve needle, which spring force loads the valve needle in the direction of a closing position, and an actuator assembly. A coil of the actuator assembly produces a magnetic force on a magnet armature of the actuator assembly such that, as the magnet armature travels toward a pole piece of the actuator assembly,. the magnet armature covers an idle stroke to a stop element of the valve needle and then carries the valve needle toward the pole piece. A spring constant of the closing spring and the magnetic force are matched such that the magnitude of the resultant force of the spring force and the magnetic force decreases with increasing distance of the valve needle from the closing positionand remains the same with increasing the distance.

Abstract: An injector for injecting fluid with a valve assembly including a valve body and a valve needle, the needle including an armature retainer and being operable to prevent and to enable injection of fluid, and with an electromagnetic actuator assembly, operable to exert a force for influencing a position of the valve needle, including a pole piece and an armature. The pole piece is positionally fixed with the valve body. The armature is operable to be axially displaced relative to the pole piece and to take along the armature retainer when being displaced towards the pole piece. A fluid channel is defined by the armature retainer constriction surface and the pole piece constriction surface. A hydraulic diameter of the fluid channel is at least twice at large when the valve needle is in a closing position compared to the hydraulic diameter at a maximum displacement away from the closing position.

Abstract: A valve assembly for a fluid injector is disclosed. The valve assembly includes a valve body having a longitudinal axis, an armature, a valve needle having a needle tip and a damping element. The armature and the damping element include penetrating first openings in which the valve needle is arranged. The damping element is fixed to the valve needle and arranged between the armature and the needle tip with respect to the longitudinal axis to attenuate a movement of the valve needle relative to the valve body during the operation of the valve assembly.

Abstract: A fuel distributor rail for a fuel injection system for an internal combustion engine in motor vehicles, in particular for gasoline engines. The fuel distributor rail comprises a main tube, wherein the main tube has a fuel channel extending in the longitudinal direction of the main tube. The main tube comprises at least two outlet openings, wherein the outlet openings branch off the fuel channel. A connecting element is arranged on the main tube, wherein the connecting element has an attachment wall that rests against the main tube. The connecting element is connected to the main tube in a material bonded manner and comprises at least two connecting pieces. The connecting pieces have a connecting channel each for the fluidic connection of an outlet opening to each injection nozzle.

Abstract: A discharge valve of a high-pressure pump is placed in a discharge passage and is openable to enable flow of fuel from a pressurizing chamber to a discharge outlet in response to a fuel pressure difference between the pressurizing chamber side and the discharge outlet side. A relief is placed in a relief passage. The relief passage communicates between a branching portion, which is located on a side of the discharge valve where the discharge outlet is placed in the discharge passage, and a return portion, which merges with a damper chamber. The relief valve is openable to enable flow of the fuel from the branching portion to the return portion in response to a fuel pressure difference between the branching portion side and the return portion side. A discharge passage orifice is placed between the discharge valve and the branching portion in the discharge passage and constricts a flow passage cross-sectional area of the discharge passage.

Abstract: A roller lifter includes a lifter body having a cylindrical peripheral wall and a roller rotatably mounted on the lifter body via a shaft member and brought into contact with a cam. The peripheral wall has an outer periphery formed with a sliding surface which is slid on an inner wall of a cylinder. The lifter body has a rotation stopper formed by outwardly protruding a part of the peripheral wall, and an opening formed in another part of the peripheral wall which another part is radially opposed to the rotation stopper. The opening is open so that the rotation stopper oppositely faces the opening.

Abstract: A valve is provided, in particular an injection valve, having a valve seat and a valve needle which extends along a closing direction for the most part, the valve seat having a valve-seat surface, and a valve-closing element is mounted on an end of the valve needle facing the valve seat, the valve-closing element being able to be moved between an open position and a closed position, and the valve-closing element together with the valve-seat surface forming a sealing seat in the closed position, the valve-closing element having a greater core hardness and/or surface hardness than the valve-seat surface.

Abstract: A fuel injection valve includes: a circular plate portion that is abuttable against an end surface of a needle opposite from a valve seat while the needle being provided to open and close an injection hole upon lifting and seating of the needle relative to the valve seat; and a tubular portion that extends from the circular plate portion toward the valve seat and has an end part, which is opposite from the circular plate portion and is abuttable against a movable core second contact surface of a movable core opposite from the valve seat. In a state where the circular plate portion abuts against the needle, and the tubular portion abuts against the movable core, a gap is formed between a flange member end surface of a flange of the needle and a movable core first contact surface of the movable core opposite from the valve seat.

Abstract: In a fuel injection valve that is inserted along a shape of an attachment hole formed in a cylinder head and that directly injects fuel supplied from a fuel supply section into a combustion chamber via a stepped section, the fuel supply section includes: a fuel cup, an end of which has a tapered section; a seal ring that prevents leakage of the fuel to the outside; and a support ring that supports the seal ring, the stepped section includes: a nozzle that injects the fuel into the combustion chamber; and an attachment shaft that has a larger radius than the nozzle, and a first gap in an axial direction between the tapered section and the support ring is larger than a second gap in the axial direction between the attachment hole and the attachment shaft.

Abstract: A fuel injector, comprising a nozzle body having a proximal end and a distal end, an upper row of nozzle holes being equally spaced about a first circumference of the nozzle body, and a lower row of nozzle holes located between the distal end and the upper row of nozzle holes, wherein the upper row has a first number of holes that is greater than a second number of holes in the lower row and wherein one of the first number of holes and the second number of holes is odd.

Abstract: A power transmission apparatus, which is disposed on a power transmission path from an output shaft of an internal combustion engine to a transmission in a vehicle, is provided with a rotating electrical machine including a rotor and a stator. The rotor is coupled to a synchronous rotating member that rotates synchronously with the output shaft of the internal combustion engine, and takes a central axis of the output shaft of the internal combustion engine as a rotating shaft. The stator is fixed to a fixing member on a non-rotating side with respect to the synchronous rotating member, and faces the rotor with a first gap therebetween.

Abstract: A step-up converter and an ignition system including a step-up converter are provided, which enable a better automated manufacture and reduced electrical insulation measures by a step-up converter constructed as follows: a transformer including a primary coil and a secondary coil galvanically isolated from the primary coil, the secondary coil being wound in multiple layers, and the primary coil being wound coaxially to the secondary coil over an outermost layer of the secondary coil, a first electrical terminal of the secondary coil branching off from an innermost layer of the secondary coil. The first electrical terminal of the secondary coil is configured for electrical connection to a high-voltage terminal for the spark gap.

Abstract: Methods and systems are provided for an internal combustion engine having at least one combustion chamber for burning a fuel mixture and a spark plug for performing spark ignition of the fuel mixture in the combustion chamber. The spark plug includes electrodes for generating an ignition spark at a location within the combustion chamber. Furthermore, the internal combustion engine includes an adjustment device for reducing a distance between the location of the ignition spark and an edge of the combustion chamber in the case of an increase in temperature of the internal combustion engine during operation.

Abstract: In a laser ignition device which is mounted in an internal combustion engine and at least includes a laser spark plug equipped with an optical window which protects an optical device from high temperature and high pressure generated in a combustion chamber and a prechamber cap equipped with a cylindrical prechamber, a prechamber throat portion that is a bottomed cylinder with a sectional area smaller than that of the prechamber, and a plurality of prechamber spray holes which communicate with a combustion chamber on a side of a closed end of the prechamber throat portion, the prechamber cap is arranged between the optical window and the combustion chamber. A converging point FP is located inside the prechamber to ignite an air-fuel mixture delivered into the prechamber, thereby jetting combustion flames from the prechamber into the combustion chamber to fire the internal combustion engine.

Abstract: The Barton Float Generator is a device that uses water currents, water waves or water elevation changes to push/pull magnets threw electrical coils to generate electrical energy.

Abstract: The present disclosure is directed to a lifting device for a rotor blade of a wind turbine. The lifting device includes at least one cradle and a vacuum sealing system configured with the cradle. The cradle has a profile that corresponds to at least one of the exterior surfaces of the rotor blade so as to support at least a portion of the rotor blade. The vacuum sealing system is configured to secure the rotor blade to the cradle as the rotor blade is lifted and/or lowered from a hub mounted atop a tower of the wind turbine.

Abstract: A wind turbine blade (10, 610) for a rotor of a wind turbine (2) having a substantially horizontal rotor shaft is described. A surface mounted device (70, 70?, 170, 270, 370, 470, 570, 670, 770) is attached to a surface of the wind turbine blade (10). The surface mounted device (70, 70?, 170, 270, 370, 470, 570, 670, 770) is attached to the surface of the wind turbine blade (10, 610) via at least a first attachment part (77, 77?), which is connected to a part of the surface mounted device (70, 70?, 170, 270, 370, 470, 570, 670, 770). The attachment part (77, 77?) comprises a flexible housing (80, 80?, 680, 780) that forms a cavity (81, 81?, 681, 781) between at least the housing (80, 80?, 680, 780) and the surface of the wind turbine blade (10, 610). The cavity (80, 80?, 680, 780) is filled with an adhesive that provides an adhesive bonding to the surface of the wind turbine blade (10, 610).

Abstract: A fluid-redirecting structure includes a rigid body having an upstream end, a downstream end, and an axis of rotation, the rigid body incorporating a plurality of troughs each spiralled from a tip at the upstream end to the downstream end about the axis of rotation, the troughs being splayed with respect to the axis of rotation thereby to, proximate the downstream end, direct incident fluid along the troughs away from the axis of rotation.

Abstract: A wind turbine blade including an elongate reinforcing structure, the reinforcing structure comprising a plurality of strips of fibre-reinforced polymer arranged into a stack structure, and at least one adjacent pair of the plurality of strips including an infusion promoting layer, wherein the infusion promoting layer is a fabric comprising a plurality of twisted yarns. The invention is also expressed as a method of assembling a wind turbine blade.

Abstract: Disclosed are a semi-submersible raft wind power generation unit and a construction method therefor. The raft wind power generation unit includes at least three floaters (12) and at least three wind turbines (21) configured to be placed on the floaters (12). The raft is configured to turn about a vertical axis and be fixed to a seabed (2) by a mooring line (36).

Abstract: A controller of a wind turbine for causing the wind turbine to perform rotor turning includes: an input part for receiving a target azimuth angle at which a rotor of the wind turbine is to be stopped; and a pitch control part configured to cause the wind turbine to perform a pitch control to stop the rotor at the target azimuth angle. The pitch control part is configured to: control a pitch angle of a wind turbine blade of the wind turbine so that the rotor rotates at a predetermined rotation speed which is constant, in a first period until the rotor reaches a control-switch azimuth angle immediately before the target azimuth angle; and control the pitch angle so that a rotation speed of the rotor decreases from the predetermined rotation speed in a second period after the rotor reaches the control-switch azimuth angle and before the rotor reaches the target azimuth angle.

Abstract: A method of operating a wind turbine power generating apparatus including a wind turbine rotor having a wind turbine blade includes: a step of obtaining a load applied to the wind turbine blade; and a step of selecting an operation mode of the wind turbine power generating apparatus on the basis of the load, from among a plurality of operation modes including a normal operation mode and at least one load-suppressing operation mode in which the load applied to the wind turbine blade is smaller than in the normal operation mode.

Abstract: In one illustrative embodiment, a wind-driven charging system includes a wind-driven rotation device coupled to a rotatable shaft, and a plurality of electric generators disposed at different longitudinal locations along the rotatable shaft and each of the plurality of electric generators are rotationally driven simultaneously by the rotatable shaft. By having the electric generators disposed at different longitudinal locations, more electric generators may be simultaneously driven by a common shaft. In some instances, a controller may be configured to enable more of the electric generators to provide electrical current to recharge a battery when the speed of rotation of the rotatable shaft increases, and may disable more of the plurality of electric generators to not provide electrical current when the speed of rotation of the rotatable shaft decreases.

Abstract: A method of operating a wind turbine power generating apparatus includes a step of obtaining a wind direction of a wind; a step of obtaining at least one of a wind velocity of the wind or an index of turbulence degree of the wind velocity; and a step of selecting an operation mode of the wind turbine power generating apparatus from among a plurality of operation modes including a normal operation mode and at least one load-suppressing operation mode in which a load applied to a wind turbine blade is smaller than in the normal operation mode, on the basis of whether the at least one of the wind velocity or the index of turbulence degree is at least a threshold. The threshold of the at least one of the wind velocity or the index of turbulence degree is variable in accordance with the wind direction.

Abstract: Provided is a power generation system capable of efficiently converting wind power into electric power. The power generation system comprises: a pneumatic tire; a wheel on which the pneumatic tire is mounted; and at least one generator wind turbine attached, in a cavity defined by the pneumatic tire and the wheel, to the pneumatic tire and/or the wheel.

Abstract: A rotor for use with an airborne wind turbine, wherein the rotor comprises a front flange, a can, a rear flange, and a rigid insert comprising a propeller mount, wherein the front flange, can, and rear flange comprise one of carbon fiber and spun aluminum, wherein a rear end of the front flange is attached to a front end of the can, and the rear flange is mounted to a rear end of the can, wherein the rigid insert is bonded to the front flange; and wherein the rigid insert comprises a tube that axially extends within the rotor to allow for the positioning of a driveshaft therethrough.