Abstract: The turbine rotor blade includes a platform with a first side and a second side; an airfoil extending from the first side of the platform; and an attachment portion extending from the second side of the platform. The attachment portion includes first and second side surfaces and a base surface on an underside of the attachment portion between the first and second side surface. The base surface includes at least one curved segment or angled segment.

Abstract: The present invention relates to an engine or pump called rotary piston engine or pump, comprising a shape of revolution F relative to a delta axis, and rotatably movable about said delta axis in relation to an envelope V, and n cavities distributed over the perimeter of F. In each cavity is housed a rotating roller, characterized in that at least one roller has its center angle determined so as to obtain the closed volumes it delimits, as large as possible.

Abstract: An engine system is mounted on a vehicle and includes an engine and a turbocharger. The engine system control apparatus includes: a driving state identifier that identifies a driving state of the vehicle from a plurality of driving states; a surge determiner that determines whether a surge condition as a condition under which a surge noise is generated is satisfied, based on the identified driving state of the vehicle and an operating state of the engine; and a variable nozzle controller that controls, based on the identified driving state of the vehicle and the operating state of the engine, an opening degree of a variable nozzle of the turbocharger to be varied in an open direction, upon determination by the surge determiner that the surge condition is satisfied.

Abstract: Systems, methods, apparatus provide improved turbocharging of an internal combustion engine. A single, discrete turbocharger is affixed to each engine combustion cylinder. Turbochargers can be mounted to their associated cylinders in close proximity, thus harvesting higher energy exhaust gases from each combustion cylinder. Tip in and spool up responses can be further improved using low rotational inertia turbochargers that can operate effectively across a wide range of engine operational speeds. Controlled balancing valves between cylinder exhaust lines can deliver exhaust gases from a single cylinder selectively to multiple turbochargers in appropriate operational conditions. Moreover, multiple turbochargers' compressors can be configured in series to achieve pressurization compounding of combustion air for low RPM operation. Nesting of turbochargers relative to one another permits improved mounting of each turbocharger in close proximity to its corresponding combustion cylinder.

Abstract: A blade (1) for a turbomachine, including an impact chamber (2), a single impulse body (3) being situated in the impact chamber, a clearance (S1+S2) between the impulse body and the impact chamber being at least 10 ?m and/or at most 1.5 mm in at least one direction.

Abstract: A system includes a multi-tube fuel nozzle. The multi-tube fuel nozzle includes multiple mixing tubes. Each mixing tube includes an annular wall disposed about a central passage and an air inlet region configured to be disposed about a fuel injector extending into the central passage. The central passage extends from an upstream end to a downstream end of the annular wall relative to a direction of flow through the central passage. The air inlet region includes an air entry surface of the annular wall that gradually decreases in diameter in the direction of flow.

Abstract: A valve train system for an internal combustion engine includes an exhaust valve moveable between an exhaust closed position and an exhaust open position. A camshaft includes a main exhaust lobe for moving the exhaust valve between the exhaust closed position and the exhaust open position for expelling exhaust constituents from the combustion chamber and an exhaust rebreath lobe for moving the exhaust valve between the exhaust closed position and the exhaust open position for allowing exhaust constituents into the combustion chamber. A two-step device is provided for transmitting motion from the camshaft to the exhaust valve and is switchable between a motion transmitting position and a motion preventing position such that the motion transmitting position allows motion to be transmitted from the exhaust rebreath lobe to the exhaust valve and the motion preventing position prevents motion from being transmitted from the exhaust rebreath lobe to the exhaust valve.

Abstract: An apparatus or system includes a component that generates or transfers noise having a frequency within a noise frequency range. The component may include a boundary. The apparatus or system may be an engine in some examples. The engine may additionally include a micro-perforated sheet positioned a distance from the boundary. The micro-perforated sheet may include a plurality of micro-perforated holes, and may be configured to absorb sound within an absorption frequency range based on parameters of the micro-perforated sheet. The parameters may include the distance from the boundary and dimensions of the micro-perforated holes, and may be set such that the absorption frequency range overlaps the noise frequency range.

Abstract: This disclosure relates to a waste heat recovery (WHR) system and method for regulating exhaust gas recirculation (EGR) cooling, and more particularly, to a Rankine cycle WHR system and method, including a recuperator bypass arrangement to regulate EGR exhaust gas cooling for engine efficiency improvement and thermal management. This disclosure describes other unique bypass arrangements for increased flexibility in the ability to regulate EGR exhaust gas cooling.

Abstract: A device for axial locking of a moving part in rotation with respect to a reference part, includes a downstream locking wedge provided with lugs laid out such that the downstream locking wedge can be placed in: a first angular position in which the downstream locking wedge may be translated axially with respect to the moving part, a second angular position in which the lugs axially immobilize the downstream locking wedge with respect to the moving part; an upstream locking wedge able to prevent the rotation of the downstream locking wedge with respect to the moving part; and a stop segment able to immobilize axially the upstream locking wedge against the downstream locking wedge.

Abstract: In various embodiments, an airfoil used as a turbine blade for a turbine wheel in a gas turbine engine is provided. The airfoil may comprise a root, a tip, and a body. The root may have a first area. The tip may have a second area. The body may have a chord bounded by the root and the tip. The body may also define a cooling chamber. The cooling chamber may have a first rib substantially perpendicular to the chord. The cooling chamber may also have a second rib extending partially between the root and the tip.

Abstract: A rotatory internal combustion engine includes a power module, a housing configured to retain the power module and including an intake and an exhaust, and a first sleeve including a sleeve intake, a sleeve exhaust, and an injector port. The first sleeve is removably coupleable within the housing to form an intake flow path between the housing intake and the sleeve intake, and an exhaust flow path between the housing exhaust and the sleeve exhaust. The first sleeve is interchangeable with a second sleeve that has at least one of a sleeve intake, a sleeve exhaust, and an injector port different than the corresponding sleeve intake, sleeve exhaust, and injector port of the first sleeve, and that is configured to modify at least one of a torque output of the engine, a power output of the engine, and a fuel timing of the engine, compared to the first sleeve.

Abstract: An internal combustion engine with at least two movable bodies each being sealingly and movably received within a respective internal cavity to define at least one combustion chamber of variable volume. A pilot fuel injector and a main fuel injector are provided for each movable body. A first chamber of a common rail is in fluid communication with each main fuel injector, and a second chamber of the common rail in fluid communication with each pilot fuel injector. A first metering or pressure regulating valve is in fluid communication with the first chamber. A second metering or pressure regulating valve provides selective fluid communication between the first and second chambers; the metering or pressure regulating valves are settable at different pressure values from one another. The movable bodies may be reciprocating pistons. A method of combusting fuel in an internal combustion engine is also provided.

Abstract: Three or more attachment pins are arranged on a right lateral surface of a nozzle ring at intervals. All the attachment pins are placed outside support holes in the nozzle ring in radial directions of the nozzle ring. A guide ring is provided across right lateral surfaces of the attachment pins. A first side guide member to support a right lateral surface of a drive ring in away that allows the right lateral surface to be in sliding contact therewith is provided to the right of the guide ring. A second side guide member to support a left lateral surface of the drive ring in a way that allows the left lateral surface to be in sliding contact therewith is provided to the left of the guide ring.

Abstract: A draining pump for a washing machine and the washing machine thereof are disclosed. The washing machine includes an inlet system, and a draining system containing the draining pump device. The draining pump has a draining motor, a pump shell, a spinning blade and a filter, wherein, an inlet nozzle and an outlet nozzle are also arranged on the pump shell, and the pump shell is internally arranged with a front pump chamber and a rear pump chamber which are communicated according to the water draining sequence; the spinning blade is arranged in the rear pump chamber and installed coaxially with a revolving shaft of the drain motor, the filter is arranged in the front pump chamber, and a pressure relief plate with pressure relief holes is arranged at one side of the outlet of the filter corresponding to the water spinning blade.

Abstract: The present invention relates to an acoustic noise monitoring system for a wind turbine, comprising: a microphone for monitoring acoustic noise, the microphone adapted to be mounted to the exterior of a wind turbine nacelle; an input, the input adapted to receive operating conditions data from a wind turbine; a processor, the processor adapted to receive data from the microphone and the input; and storage memory, adapted to store the acoustic noise data and the operating conditions data. The processor is adapted to apply a transfer function to said acoustic noise data to correlate said data with a set of acoustic noise data measured at a remote location from the wind turbine. The system may comprise a controller adapted to generate a control signal, for outputting to a wind turbine controller, for adjusting the operating parameters of the wind turbine in dependence on said correlated data.

Abstract: Embodiments for vacuum generation are provided. In one example, a method for an engine including a turbocharger having a compressor driven by a turbine comprises generating vacuum via exhaust flow through an ejector, and applying vacuum from the ejector to a wastegate actuator. In this way, vacuum produced via high-pressure exhaust resulting from boosted engine operation may be used to actuate the wastegate valve.

Abstract: The radial piston rotary device with compact gear drive mechanism includes a base, a casing mounted to the base, and a gearbox coupled to the casing. The casing houses a piston assembly with a pair of first radial pistons and a pair of second radial pistons coaxially mounted to the first radial pistons with each pair rotating at asynchronous, cyclically varying velocities. During a power cycle, a leading pair of radial pistons powers the associated gear assembly, and the gear assembly drives a flywheel assembly. A drive shaft axially extends from the flywheel assembly outside the gearbox to be selectively coupled to a driven component. The flywheel drives the pair of lagging radial pistons. During operation, each pair of radial pistons rotate at cyclically varying angular velocities out of phase with each other, yet produce a uniform output to the drive shaft.

Abstract: An EGR valve is provided with a curved connecting surface to allow condensate to flow from an outlet to an exhaust gas inlet of the EGR valve during the use of low-pressure EGR. The curved connecting surface mitigates condensation and/or ice from entering the intake line and impinging on the compressor wheel.

Abstract: A variable geometry turbine comprises a turbine wheel and a primary inlet passage of variable axial width. The turbine has a secondary inlet passage provides a flow path for a working fluid which circumnavigates at least part of the primary inlet passage. A seal element and one or more apertures are cooperable to selectively allow or prevent fluid flow through the secondary inlet passage. The turbine wheel is of the radial-inflow axial-outflow type and secondary inlet passage has an outlet configured to direct working fluid to exit the secondary inlet passage in a direction which has an axial component in the opposite direction to the direction of axial outflow of the turbine wheel.