Abstract: The present invention relates to a water pump in a vehicle. The water pump in a vehicle includes a pump cover which forms an upper side exterior appearance of the pump for housing an impeller to be rotated, a hollow rotor coupled on the same axis with the impeller to rotate altogether, and a housing coupled to the pump cover to house the rotor and a stator therein, wherein the pump cover includes a first rotation shaft extended toward the hollow in the rotor passed through the impeller, the housing includes a second rotation shaft extended toward the hollow in the rotor, the first rotation shaft has a communication hole formed therein to be in communication with the hollow, and the rotor has a communication passage recessed in a lower end portion thereof to a predetermined depth.

Abstract: A piston-cylinder actuator includes a unique mount for an absolute-position sensor. The mount is made from a bearing material provides a flexible connection between the sensor mount and the cylinder housing. This flexible connection allows the piston rod to deflect naturally, under its own weight or under other laterally-directed forces, while maintaining the distance and perpendicularity between the sensor and the rod surface, within acceptable limits. The sensor mount is made from a bearing material that will allow it to float directly on the rod surface without scuffing or otherwise damaging the rod surface, particularly the markings or other indicia on that surface. Due to the flexible connection between the sensor mount and the cylinder housing, the proper distance between the sensor and the rod surface can be maintained at all times.

Abstract: A rotor assembly is provided that includes a rotor blade, a root spacer, and a rotor disk with a slot. The rotor blade includes a blade root arranged within the slot. The blade root includes a root base segment and a pair of root side segments. The root base segment is laterally separated from the rotor disk by the root side segments. The root spacer is arranged within the slot, and includes a side surface that extends radially between an inner surface and an outer surface. The side surface is approximately laterally aligned with an intersection between the root base segment and a first of the root side segments. The outer surface engages the root base segment.

Abstract: A capacitive sensor device and a method of manufacture are provided. The capacitive sensor device includes at least one sensor tip that includes an electrode positioned at a first end of the sensor tip, and a stem member coupled to the electrode and extending toward a second end of the sensor tip. The device also includes a coaxial cable including a center conductor, the center conductor coupled to the sensor tip at the second end, and an insulation layer supporting the sensor tip between the first and second ends. The insulation layer includes a metallization on a portion surrounding the second end of the sensor tip. The device further includes a casing surrounding a portion of the coaxial cable, the metallization, and the coupling of the center conductor and the sensor tip, wherein a braze joint is formed between the casing and the metallization to form a hollow, hermetic cavity.

Abstract: A flow divider assembly for use with a hydraulic pump provides flow to separate drive motors for use in a vehicle or other application. Flow may be provided alternatively to a first fluid side and second fluid side. A first and a second flow divider motors are in hydraulic communication with an output of a shuttle valve. A first bypass valve is connected to the first fluid side and a second bypass valve is connected to the second fluid side, and both bypass valves have an open position and a closed position. A pilot operated valve is operably connected to both flow divider motors and to both bypass valves, and the pilot operated valve has three positions and is biased to a first position. One embodiment permits the output of the system to be driven in either forward or reverse directions.

Abstract: A hydrostatic stepless transmission (“HST”) includes a center casing into which a plunger block of a hydraulic pump and a plunger block of a hydraulic motor are inserted. Plunger ports are open and aligned peripherally on an outer peripheral surface of each plunger block. A pair of main fluid passages of a closed fluid circuit fluidly connecting the hydraulic pump to the hydraulic motor are formed in opposite side portions of the center casing. Each of the main fluid passage includes peripheral grooves formed on an inner peripheral surface of the center casing so as to face the plunger ports of the respective plunger blocks, and includes an axial fluid duct formed to be interposed between the peripheral grooves. A bearing gap is provided between the inner peripheral surface of the center casing and the outer peripheral surface of the plunger block so as to cause a dynamic pressure action of fluid.

Abstract: A method for controlling aerodynamic loads in wind turbine (20), includes stopping rotation of blades (22) of the turbine about a rotor shaft axis (38); stopping rotation of a nacelle (30) of the turbine about a vertical yaw axis (36); pitching each blade of the turbine about its respective pitch axis (43) into a stable pitch angle range (52B-52C or 52E-52F) in which a resulting root twisting moment (52) created by a current wind loading (48, 50) on the respective blade is in a direction urging pitch rotation of the blade toward a position of lower root twisting moment; and releasing the blades to rotate passively about their respective pitch axes during subsequent changing wind directions (VR1). A blade may be designed to better align a root zero twisting moment (52A, 52D) in the stable pitch angle range with a minimum (48B, 48D, 50B, 50D) wind loading.

Abstract: The invention relates to a rotor for a fluid pump, in particular for use in the medical sphere, the rotor being compressible for bringing to the place of use and thereafter being expandable. The compressibility is assisted by the provision of cavities, in particular also production of the rotor at least partially from a foam.

Abstract: To achieve flow demands for high flow services, a hydraulic system shares a flow between a hydraulic transformer and one or more hydraulic pumps. The hydraulic transformer is in selective fluid communication with the pumps and actuates a first load. A second load is driven by an actuator in selective fluid communication with the pumps and the hydraulic transformer. The hydraulic system includes a controller to reduce dynamic responses in the system by causing flow sharing between the hydraulic transformer and a directional flow control valve.

Abstract: A middle support member is used to provide axial support and control to the tie shaft. The middle support member includes a high pressure compressor coupling nut that applies a preload that allows the high pressure compressor stack to be installed separately from the high pressure turbine rotor through a kickstand.

Abstract: The invention relates to an arrangement for sealing off a piston rod, which moves substantially rectilinearly in a reciprocating manner with respect to a passage opening, of a reciprocating-piston machine, having at least two internally clamping sealing rings, which surround the piston rod and are arranged in the region of the passage opening so as to be substantially fixed with respect to a seal housing, and are mounted in the seal housing so as to be movable in a radial direction, and between at least two seal rings there is arranged a spacer ring which is arranged spaced apart from the piston rod, so as to form, together with the seal rings and the piston rod, an accumulation chamber for medium to be sealed off, for example for oil, and the spacer ring has at least one passage for discharging medium out of the accumulation chamber.

Abstract: An inter-blade sealing for a turbine or compressor wheel of a turbine engine includes inserts engaged in longitudinal cavities in side edges of platforms of blades and bearing, in operation, against facing side edges of platforms of adjacent blades. Each insert has a cylindrical elongate shape and includes in its outer cylindrical surface at least one annular groove for passing platform cooling air.

Abstract: A plurality of stepped parts which have step surfaces facing an upstream side in a rotating axial direction of a structural member are provided in a tip portion of a blade, and seal fins which extend toward a circumference surface of each of the stepped parts and form small clearances between the seal fin and the circumference surface corresponding to the each of the stepped parts is provided in the structural member. Also, lengths from the small clearance to the step surface on the upstream side along the rotating axial direction of the structural member are set such that one of the stepped parts on the downstream side is smaller than the other one of the stepped parts on the upstream side.

Abstract: An attachment arrangement at a middle of a cover having an elastically deformable portion. The cover includes a concave shell including an inner surface spaced apart from the compressor including an impeller including blades by an attachment. The attachment includes one connection end at the middle of the shell, another end attached to a casing of the turbine engine, and an axisymmetric diaphragm having a generally frusto-conical configuration having an arm profile coupled to the end for attachment to the casing by a double-elbow joint having right and obtuse angles when in a rest position. The distance between the inner surface of the shell and upper edges of the blades can be held constant during operation with minimum clearance adjustment. The cover can be moved such that clearance between the cover and blades of the compressor impeller remains substantially constant and as low as possible.

Abstract: A valve of an accumulator device, which is formed by an accumulator cylinder and an accumulator piston guided therein, includes a valve sealing body. The valve sealing body is configured to selectively open and close a valve opening at a valve seat. The valve also includes an opening mechanism configured to selectively raise the valve sealing body from the valve seat. The opening mechanism is held by a spring element, and the spring element is formed by a punched and bent part.

Abstract: A pneumatic motor includes a housing, a rotor, an air flowing unit and an air-supply unit. The housing has an inside space formed along an axis and divided sequentially into a rotor chamber, a valve chamber and an inlet chamber. The rotor is rotatably mounted in the rotor chamber. The pneumatic valve is mounted in the rotor chamber and the valve chamber and includes an air flowing unit and an adjusting gate. The air-supply unit is mounted in the inlet chamber and is connected to a source of compressed air, so the compressed air can flow from the inlet chamber into the valve chamber and then flow through the pneumatic valve to drive the rotor.

Abstract: A variable vane damping assembly includes an inner bushing and an outer bushing. The inner bushing comprises an elastomeric material.

Abstract: A hydraulic actuation system includes a differential unit having a hydraulically-actuated differential, a power steering unit, a hydraulic pump, a reservoir, a controller, an electronically-controlled flow control manifold, and a proportional pressure control solenoid valve. A flow control manifold may control fluid flow to the power steering unit and the differential. The manifold may include a manifold inlet connected to a pump; first manifold outlet connected to a differential; second manifold outlet connected to a reservoir; third manifold outlet connected to a power steering unit; two-way solenoid valve connected to a manifold inlet and controlled by a controller; flow control valve connected to a two-way solenoid valve and a first manifold outlet; and a pressure differential sensing valve connected to a two-way solenoid valve, the manifold inlet, and the third manifold outlet. A proportional pressure control solenoid valve may connect the first manifold outlet and the differential.

Abstract: A power machine and a power conversion system for a power machine are disclosed. In an exemplary embodiment, the power conversion system includes a pump configured to provide a source of pressurized hydraulic fluid and a control valve assembly to receive the hydraulic fluid. The control valve assembly includes a first valve element configured to direct hydraulic fluid to an actuator when the first valve element is in first and second actuated positions. The control valve assembly also includes a second valve element downstream of the first spool. The first valve element is moveable between an unactuated position and the first and second actuated positions and is configured to direct hydraulic fluid received from the actuator through the second actuated position to the second valve element and to direct hydraulic fluid received from the actuator through the first actuated position to bypass the second valve element.

Abstract: A centrifugal fan device includes an impeller supported to rotate about a center axis extending in an up-down direction; a motor arranged to rotate the impeller; and a housing arranged to surround the impeller. The housing includes an intake portion positioned above the impeller and an exhaust portion positioned radially outward of the impeller. The impeller includes a base extending in a direction orthogonal to the center axis, a ring-shaped shroud positioned above the base and having a diameter which decreases as it goes upward, and a plurality of blades arranged between the base and the shroud. The housing further includes a plurality of ribs protruding from an inner surface of the intake portion toward the shroud.