Abstract: A center pivot roller rocker arm assembly can comprise a main roller rocker arm, a second roller rocker arm, and a latching assembly. The main roller rocker arm can comprise a rocker shaft bore, a valve end, a cam end, and a main cam surface on the cam end. The second roller rocker arm can comprise a second rocker shaft bore, a second cam end, and a second cam surface on the second cam end. The latching assembly can be coupled to the rocker shaft bore and configured to latch and unlatch the main roller rocker arm to the second roller rocker arm. A lost motion assembly can be configured with the main and second roller rocker arms. A main cam surface can have a different extent for receiving cam actuation than a second cam surface.

Abstract: A variable cam timing phaser includes a housing and a rotor defining a plurality of chambers, a first end plate, and a second end plate. The variable cam timing phaser additionally includes at least one air vent located at a center of rotation region of at least one of the housing, the rotor, the first end plate, or the second end plate. The at least one air vent is fluidly coupled to the plurality of chambers and is configured to vent air from the plurality of chambers. The variable cam timing phaser also includes a reservoir fluidly coupled to the at least one air vent. The reservoir is configured to retain hydraulic fluid and is configured to reduce air from being ingested through the at least one air vent and into the plurality of chambers.

Abstract: A rocker arm assembly can comprise a rocker tube configured to be positioned around a rocker shaft, the rocker tube comprising a retention mechanism. A first rocker arm can be press-fit to the rocker tube. A second rocker arm can be pivotably mounted around the rocker tube and retained on the rocker tube by the retention mechanism. An alternative rocker arm assembly, that can be combined with the first rocker arm assembly, can comprise a first and second rocker am and a plate fixed to the first rocker arm. The plate can comprise an extension extending over the second rocker arm. A lost motion spring can be installed between the second rocker arm and the extension.

Abstract: System, method, and apparatus for harnessing geothermal power from superhot geothermal fluid (SHGF) and magma reservoirs. An exemplary embodiment is directed to a cased wellbore for use in generating superheated steam. The cased wellbore includes a first end at a surface, a second end at an underground reservoir of magma, and a fluid pathway extending from an inlet at the first end to the second end and then from the second end to an outlet at the first end. The fluid pathway is configured to receive saturated steam at the inlet and expel superheated steam from the outlet, and the saturated steam is transformed into superheated steam in the fluid pathway at the second end of the cased wellbore.

Abstract: The present invention discloses groundwater heat transfer system comprising a primary pump suspended in a well and connected to at least one water supply pipe, a heat exchange system being connected to said primary pump via a secondary pump, a return pipe being connected to the heat exchange system and returning water from the heat exchange system to the well, wherein the primary pump provides motive pressure to a primary nozzle of a liquid jet ejector submerged in the well, which entrains filtered groundwater through a secondary nozzle of the liquid jet ejector, wherein the secondary pump, placed after the primary pump and before the heat exchange system, provides the remaining system head.

Abstract: An energy production device may include a core configured to heat a heat transmission fluid, an energy harnessing device configured to convert heat into electrical energy and a heat transfer device positioned over the core configured to receive the heat transmission fluid and transfer the heat to the energy harnessing device. The energy production device may further include a vibration isolator positioned between the energy harnessing device and the heat transfer device. The vibration isolator may be configured to secure the energy harnessing device to the heat transfer device and substantially prevent the transmission of motion from the energy harnessing device to the heat transfer device.

Abstract: In a variable displacement oil pump (VP1) according to the present invention, a stopper portion (45) that can come into contact with a cam ring contact portion (112e) provided at a pump accommodating portion (110) is provided at a position that does not overlap a first suction port (114), a second suction port (124) and an inlet (124a), which correspond to a suction portion, in a circumferential direction of rotation of a drive shaft (2) on a rotation center (Z). Therefore, there is no risk that flow of oil sucked into pump chambers (30) located in a suction region through the first suction port (114), the second suction port (124) and the inlet (124a) will be interrupted by the stopper portion (45), thereby improving a suction performance of the pump.

Abstract: A compact, modular, lost motion variable valve actuation assembly includes a dry start hydraulic circuit to enable quick priming of a lost motion master-slave circuit from a dry start reservoir to the master piston chamber during engine start. Motion of the master piston on engine startup may draw in fluid from the dry start hydraulic circuit. The dry start components may be integrated into a compact modular rocker shaft pedestal package suitable for retrofit on existing engine head assemblies. The master piston may include a push tube interface that includes a deep push tube cavity and lubrication capabilities in the master piston that provides for improved wear, stability, easy installation and alignment. The slave piston may be provided with a valve catch to reduce valve closing velocity during cycles involving lost-motion.

Abstract: A rotary vane pump includes a pump housing, a stator, a rotor, a plurality of vanes which are accommodated in the rotor so as to be displaceable in the radial direction, so that they delimit a plurality of pump chambers between themselves, the stator and the rotor. A radially inner cam surface is provided, against which the vanes rest, wherein secondary chambers are delimited in the radial direction between the cam surface and the rotor and in the circumferential direction between the vanes, with a suction inlet and a pressure outlet being assigned to the secondary chambers.

Abstract: Energy generation systems and methods are disclosed. An energy generation system includes a fuel tank configured to store a fuel in liquid form and a power generating device including a fuel cell or an internal combustion engine configured to receive the fuel and generate electrical energy with the fuel. The energy generation system also includes an expander connected between the fuel tank and the power generating device, the expander configured to receive the fuel as a gas and a generator connected to the expander so as to generate electrical energy when fuel passes through the expander.

Abstract: According to a first aspect of the invention, there is provided a wind turbine blade having a split blade configuration, comprising a first blade module defining an aerofoil profile and a second blade module defining an aerofoil profile; a damping module intermediate the first blade module and the second blade module; wherein the damping module comprises a first blade interface for joining to the first blade module and a second blade interface for joining to the second blade module. The damping module comprises a vibration damping unit. Beneficially, the invention provides a useful way in which to integrate motion damping functionality into a modular wind turbine blade.

Abstract: A scroll compressor is provided that may include a casing, a main frame, a rotational shaft, an orbiting scroll, a fixed scroll, and an oil supply guide. A second oil supply guide of the oil supply guide may be disposed in at least one of the orbiting scroll or the fixed scroll and extend along a thrust bearing surface between the orbiting scroll and the fixed scroll to provide communication between a first oil supply guide and a compression chamber having a lower pressure than an oil storage space. This may produce a great pressure difference between ends of an oil supply passage including the first oil supply guide and the second oil supply guide, and allow smooth oil supply using differential pressure to the thrust bearing surface between the fixed scroll and the orbiting scroll.

Abstract: A valvetrain includes a camshaft (501), a pivot (303), a rocker arm assembly (203) mounted on the pivot (303), a latch assembly (122), a power transfer module (100) a rocker arm (401), a cam follower (301) configured to engage a cam, and two contacts pin (403) protruding to opposite sides of the rocker arm (401). The electromagnetic latch assembly (122) includes a latch pin (405) and an electromagnet (119) that is powered through at least one of the contact pins (403). The power transfer module (100) includes a framework (101) that supports two contact pad each contacting a respective one of the contact pins. The framework (101) has a base that abuts the pivot (303). The contact pads extend upward from the base and terminates at a height that is below a height of the rocker arm assembly (203) above the pivot (303).

Abstract: A system includes a subsea geothermal power system. The subsea geothermal power system includes a plurality of well connections configured to couple to a plurality of geothermal wells. The subsea geothermal power system also includes a geothermal power plant fluidly coupled to the plurality of well connections. The geothermal power plant is configured to receive thermal energy from the plurality of geothermal wells and convert the thermal energy into at least one of electrical energy and mechanical energy. The system also includes a subsea station having one or more pumps, one or more compressors, one or more separators, one or more energy storage devices, or a combination thereof. The subsea station is at least partially powered by the at least one of electrical energy and mechanical energy produced by the subsea geothermal power system.

Abstract: A heat engine including a compressor; an expander; a reactor in which first and second reactants in a working fluid can react with each other, the reactor arranged between the compressor and the expander; and a condenser for condensing a gas in the working fluid, the condenser arranged between the expander and the compressor. There is also provided a method of operating a heat engine.

Abstract: A heat engine including a compressor, an expander, a reactor in which first and second reactants in a working fluid can react with each other, the reactor arranged between the compressor and the expander, and a condenser for condensing a gas in the working fluid, the condenser arranged between the expander and the compressor. There is also provided a method of operating a heat engine.

Abstract: A pivoting bracket assembly for a valvetrain comprises a pivot pin, a first bracket comprising a first mounting area rotatable about the pivot pin and a first reaction arm extending away from the first mounting area, and a second bracket comprising a second mounting area rotatable about the pivot pin and a second reaction arm extending away from the first mounting area. A compliance member comprises a receiving leg biased against the first bracket and a transfer leg biased against the second bracket. A bias member comprises a first leg biased against the second bracket and a second leg configured to mount the bias member relative to the pivot pin. The bias member is configured to oppose bias forces from the compliance member. An actuator assembly can be installed so that a rotatable shaft is perpendicular to the pivot pin.

Abstract: A wind turbine generator nacelle (14) comprises a nacelle frame (44) having a first forward hub end and a second aft end. Dedicated transport fittings (46) are positioned at each of the ends of the nacelle frame (44). The fittings (46) are adapted to be engaged by transport frames (86) on first and second transport trailers (80) for supporting the nacelle frame (44) for transport by the trailers (80). A service platform (20) is mounted to the transport fittings (46) on the aft end of the nacelle frame (44) such that the service platform (20) is cantilevered off of the aft end of the nacelle frame (44).

Abstract: A blower comprising a blower housing, a blower wheel, and a motor. The blower wheel is within the blower housing and has a plurality of blades. The motor is operatively connected to the blower wheel to rotate the blower wheel about an axis of rotation. The blower housing comprises a wall perpendicular to the axis of rotation. The wall has a static tap hole having a leading edge and a trailing edge. The static tap hole is positioned near an axial side of the blower wheel such that as the blower wheel rotates, any of the blades of the blower wheel passes the leading edge of the static tap hole before passing the trailing edge of the static tap hole. The wall comprises a protrusion protruding axially from the wall and toward the blower wheel. The protrusion is located adjacent the trailing edge of the static tap hole.

Abstract: A geothermal plant, for extracting energy from a geothermal reservoir located below the ocean bottom, includes a floating platform; a riser that extends from a well drilled into the geothermal reservoir, to the floating platform; an electrical pump having a mechanical actuation part located in a bore of the riser, and an electronic part located outside the riser, wherein the electrical pump is configured to pump a geothermal liquid from the geothermal reservoir to the floating platform; and a power plant located on the floating platform and configured to use a steam produced by the geothermal liquid to generate electrical power. The electrical pump is placed at a depth of the riser where the geothermal liquid is in a single-phase.