Abstract: Methods and systems are provided for optimal operation of a gasoline particulate filter coupled to an engine exhaust system. Based on engine operating conditions, a target soot level on the GPF may be determined, and one or more engine operating parameters may be adjusted to maintain the actual GPF soot level at the target level. In one example, if the actual GPF soot level is lower than the target level, one or more of a fuel injection timing and a fuel rail pressure may be adjusted to increase soot generation, and if the actual GPF soot level is higher than the target level, the GPF may be regenerated until the actual soot level reaches the target level.

Abstract: A method for operating a spark-ignition direct-injection internal combustion engine coupled to an exhaust aftertreatment system including a catalytic converter includes monitoring an operating state of the catalytic converter. The method further includes determining if a piston of the engine is entering an intake stroke. The method further includes injecting a first quantity of fuel into a cylinder in which the piston of the engine is entering the intake stroke, and injecting a second quantity of fuel into the cylinder in which the piston of the engine is entering the intake stroke.

Abstract: Extruded cylinder liners and methods of forming the same are disclosed. The extruded engine cylinder liner may include a cylindrical body having a longitudinal axis and defining an inner surface and an outer surface. A plurality of spaced apart features may protrude from the outer surface and may extend in a direction oblique to the longitudinal axis. The method may include extruding a metal material through a die to form a cylindrical body defining an inner surface and an outer surface and a plurality of spaced apart features protruding from the outer surface. The die may be rotated about a longitudinal axis during at least a portion of the extruding step such that the features extend in a direction oblique to the longitudinal axis. The oblique features may allow parent casting material to enter channels therebetween and prevent the liner from moving in the vertical and horizontal directions.

Abstract: A sliding arrangement has a main body, in particular a crankcase, made from an aluminum material, and a coating which is applied to the main body by way of thermal spraying as a sliding surface, in particular as a cylinder liner. The sliding surface has a first phase consisting of a first material and a second phase consisting of a second material. The first material is different from the second material. The first material has at least 50 percent by mass of iron, and wherein the second material has at least 50 percent by mass of copper.

Abstract: A cooling channel piston for an internal combustion engine which includes a piston bottom and a piston shaft that are joined thereto of a friction welding process. The piston bottom and the piston shaft jointly form a cooling channel. An annular wall which radially delimits the cooling channel towards the outside is formed by the piston bottom and/or the piston shaft. The annular wall can be sealed by a welding process once the piston bottom and the piston shaft have been joined together.

Abstract: An internal combustion engine having a fuel injector, a piston chamber, a piston slidably disposed in the piston chamber having a piston crown along a top surface, a head assembly having at least one pre-chamber separate from the piston chamber and in fluid communication with the piston chamber via at least one connecting orifice, and an ignition device disposed in the pre-chamber for igniting a fuel air mixture within the pre-chamber, thereby producing an ignition jet being introduced into the piston chamber via the at least one connecting orifice to ignite a fuel/air mixture in the piston chamber. The fuel/air mixture is passively introduced into the at least one pre-chamber during at least a compression stroke of the piston.

Abstract: The invention relates to an aeroengine after-body assembly comprising an exhaust casing made of metal having a plurality of arms extending radially between an inner shroud and an outer shroud. The assembly comprises at least one axisymmetric part made of composite material extending between an upstream end fastened to said exhaust casing and a downstream end that is free. In accordance with the invention, the axisymmetric part has an annular portion at its upstream end, which annular portion includes a plurality of slots defining between them a plurality of resilient fastener tabs. Each slot co-operates with an arm of the exhaust casing, which further includes fastener parts attached to the resilient fastening tabs.

Abstract: An engine cowling of an aircraft gas turbine having a front cowling and a single rear cowling movable in the axial direction. By a drive device, the rear cowling is movable into different positions including a closed cruise position, a partially opened maximum thrust position and a completely opened thrust-reversing position. The drive device includes at least two actuators arranged in series relative to one another and actuated independently of one another, the actuators having power supply systems separated from one another and separately operating, where one of the actuators is designed for the maximum thrust position and the other actuator for the thrust-reversing position. The rear cowling can be locked in the maximum thrust position or the thrust-reversing position by two independent locking devices.

Abstract: The cryogenic fuel supply system for an engine is arranged in locomotive two sections connected by an inter-section connection for the purpose of transferring fuel from one section to the other. There is a cryogenic reservoir for storage of a liquefied cryogenic fuel, a positive-displacement high-pressure cryogenic pump, an oil heat-exchanger, a gas heat-exchanger, a gas mixer, a gas receiver, a fuel filter, a controlled gas metering unit, pipelines, valves, controlled valves, and a control unit. The cryogenic fuel supply system further includes an intermediate buffer arranged between the cryogenic reservoir and the positive-displacement high-pressure pump and connected to the cryogenic reservoir by pipelines and to the positive-displacement high-pressure cryogenic pump by a pipeline and two additional pipelines.

Abstract: An anomaly determination unit includes an EGR amount acquisition section configured to acquire an actual amount of an EGR amount, which is a flow rate of EGR gas; an estimation amount computation section configured to compute an estimated amount of the EGR amount based on a working gas pressure, which is a pressure of working gas in which the EGR gas and intake air are mixed, an EGR temperature, which is a temperature of the EGR gas immediately upstream of an EGR valve, an EGR pressure, which is a pressure of the EGR gas immediately upstream of the EGR valve, and an opening degree instruction value for the EGR valve; and a determination section configured to determine the presence or absence of an anomaly in the EGR valve based on the divergence between the actual amount of the EGR amount and the estimated amount.

Abstract: Embodiments are disclosed that relate to refueling a dual fuel internal combustion engine. In one example, a method comprises supplying a liquid fuel to a fuel tank configured to store both the liquid fuel and a gaseous fuel, if a pressure in the fuel tank is less than a threshold pressure.

Abstract: An adsorption filter for an air cleaner for an internal combustion engine is mounted by being inserted inside a second housing along a face of the adsorption filter. In an inner face of the second housing, the adsorption filter is guided to a mounting position in an inserting direction of the adsorption filter. While the movement of the adsorption filter to the mounting position is allowed by elastic deformation, the adsorption filter is restricted from falling off from the mounting position.

Abstract: Methods and systems are provided for varying the volume of an engine intake system to increase the volumetric efficiency of the engine. In one example, a resonance system may be coupled to the engine intake system and a position of a movable element in the resonance system may be varied to vary the volume of the chamber in accordance with engine speed. The intake system provides improved volumetric efficiency for the engine.

Abstract: A multi-chamber blowoff valve is provided for releasing excess air pressure from a duct system associated with a vehicle. The blowoff valve has a valve housing, an engine-air interface, and a multiple piston assembly. The valve housing is configured to secure to the duct system at a duct-air interface. The engine-air interface is configured to allow air in and out of the valve housing. The multiple piston assembly is disposed within the valve housing and includes an upper piston and a lower piston that move in unison. The multiple piston assembly is configured to be in a closed position while a pressure differential is above a certain threshold and to be in an open position while the pressure differential is below said certain threshold. While in the open position, a portion of the air in the duct system is released.

Abstract: An air intake system includes a plurality of intake runners configured to supply intake air to the engine, and an independent resonator system operably associated with the plurality of intake runners and including a plurality of individual resonator assemblies. Each individual resonator assembly is fluidly coupled to one intake runner of the plurality of intake runners. The plurality of individual resonator assemblies is configured to interact with at least one of sound and pressure waves generated in the engine to reduce engine noise and/or increase engine torque.

Abstract: An opposed piston engine may include a first housing, first and second pistons, and first, second, and third fuel injector nozzles. The first housing may define a first passage extending along a first longitudinal axis. The first and second pistons may be slidably disposed within the first passage. The first, second, and third fuel injector nozzles may be in fluid communication with the first passage. At least one of the first, second, and third fuel injector nozzles may be angularly offset from another one of the first, second, and third fuel injector nozzles by an oblique angle about the first longitudinal axis.

Abstract: A process for starting an internal combustion engine, providing the use of an electric motor acting on the driveshaft of the internal combustion engine, provides a positioning step, activated upon switching-off the engine, and a switching-on step, activated after a starting control, wherein said positioning step comprises: a forward rotation by a predetermined forward rotation angle; a detection of a possible stall state followed, in negative case, by an additional forward rotation until reaching a predetermined maximum forward rotation angle; an inverse rotation by a predetermined angle; and a detection of a possible stall state followed, in negative case, by an additional inverse rotation until reaching a predetermined maximum inverse rotation angle.

Abstract: In at least some implementations, an ignition system for a light-duty combustion engine includes a charge winding, a microcontroller and a power supply sub-circuit. The sub-circuit is coupled to both the charge winding and the microcontroller and includes a first power supply switch, a power supply capacitor and a power supply zener. The sub-circuit is arranged to turn off the first power supply switch so that charging of the power supply capacitor stops when the charge on the power supply capacitor exceeds the breakdown voltage on the power supply zener. In at least some implementations, the power supply capacitor may power the microcontroller and the power supply sub-circuit may limit or reduce the amount of electrical energy taken from the induced AC voltage of the charge winding to a level that is still able to sufficiently power the microcontroller yet saves energy for use elsewhere in the system.

Abstract: A method of firing at least one spark plug of an internal combustion engine include supplying AC power to the spark plug in which the AC power has a waveform with a rising edge and a falling edge, activating the spark plug during the rising edge of the waveform, and deactivating the spark plug during the falling edge of the waveform. This method further includes connecting an engine control module and a vehicle power supply to at least one AC ignition coil and connecting the AC ignition coil to the spark plug or spark plugs. The firing duration of the AC ignition coil or transformer mirrors a digital square waveform duration from the engine control module.

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: Described herein are wave energy conversion systems including actuated geometry components. An example system may include at least one body portion configured to transfer wave energy to a power take off device, and at least one actuated geometry component that is connected to the at least one body portion, the at least one actuated geometry component operable to modify a geometric profile of the system.

Abstract: A float-linkage device for wave-energy electricity generation includes a float coming with two moving braces attached to two sides thereof. The two moving braces are pivotally connected to corresponding ends of upper and lower links. The upper and lower links each have an opposite end thereof pivotally connected to a transmission link. The transmission link further has an opening for receiving a one-way bearing, thereby forming a float-link unit. A plurality of the float-link units are linked by each having a pivot hole at one end of the moving brace of the float engaged with a boom of a prop, and having a pivot hole of the one-way bearing engaged with a main boom of the prop. A gear is provided on the main boom of the prop and is engaged with a pinion provided on a power-generating device installed on the prop.

Abstract: A horizontal-shaft wind machine having improved low wind speed performance and greater overall efficiency consists of multiple rotors, wherein each successive rotor is larger in diameter than the previous rotor moving from the most windward rotor to the most leeward rotor. Each rotor may be coupled to a shroud/diffuser that is displaced axially downwind from the rotor.

Abstract: A wind turbine blade having a blade surface comprising a pressure side and a suction side, comprising one or more flow disturbing devices for provoking air flow separation arranged on the suction side of the blade, wherein the flow disturbing device is removable.

Abstract: A spar cap assembly is for a wind turbine rotor blade. The spar cap assembly has a spar cap reinforced with carbon fibers, comprising a lightning conductor, which is arranged so as to run along the spar cap, and at least one potential-equalizing element, which establishes an electrical connection between the spar cap and the lightning conductor. The carbon fibers of the spar cap, the lightning conductor and the at least one potential-equalizing element are embedded in a common polymer matrix and are configured as a prefabricated assembly for integration into a wind turbine rotor blade half-shell after the curing of the polymer matrix.

Abstract: A wind turbine rotor blade is bonded together at the leading and trailing edges, and including a shear web or webs (the main vertical stiffening member that runs the span of the rotor blade) as an integral part, sharing the inner and outer skins of one or both sides of the blade. The integrated shear web(s) is made into the skin shell, and is an uninterrupted, continuous extension of the shell laminate that is joined to the shell component/components without requiring a secondary bond of any sort. The laminates in the shell and the shear web(s) may differ or be the same.

Abstract: The present disclosure is directed to systems and methods for manufacturing a wind turbine rotor blade that can be easily lifted and lowered to and from a rotor installed atop a tower. The method includes providing a plurality of root inserts for a blade root of the blade and securing at least one cylindrical member to one of the root inserts such that the cylindrical member is substantially perpendicular with the root insert. The method also includes arranging the root inserts in a blade mold of the blade and forming a blade shell with the plurality of root inserts laminated therein. The method may further include securing at least one attachment component within each of the cylindrical members so as to provide an attachment location for a pulley cable used to lift and lower the rotor blade to and from the rotor installed atop the tower.

Abstract: A method of operating a wind power installation is disclosed. In the method, a network frequency of an electrical network is measured and an amount of power delivered to the electrical network is controlled by at least maintaining the amount of power delivered without changing the power when the network frequency is between a rated frequency for the electrical network and a deadband frequency. Further, the amount of power is increased by a first amount when the network frequency is between the deadband frequency and a control-band frequency, whereby the first amount is proportional to a difference between the network frequency and the deadband frequency. In addition, the amount of power delivered is increased by a second amount when the network frequency is less than the control-band frequency. The second amount is a preset amount of power that is determined based on a difference between the control-band and deadband frequencies.

Abstract: The present invention relates to a method for injecting electrical energy into an electrical, three-phase grid, comprising the steps of: injecting current by means of an injection unit at a grid connection point, detecting an asymmetry in the grid, in particular a negative sequence component in the grid, injecting an asymmetrical current portion into the grid for, at least, partial compensation of the detected asymmetry, with injection of the asymmetrical current portion taking place such that the injection unit behaves like a consumer.

Abstract: A method for optimizing a hybrid wind system including a wind farm having a plurality of wind turbines and one or more energy storage units, is presented. The method includes acquiring actual wind power data associated with one or more dispatch windows. The method includes determining forecasted wind farm power estimates corresponding to the dispatch windows using a plurality of forecast schemes. The method includes computing difference values by comparing the forecasted wind farm power estimates to the actual wind power data. The method includes identifying a wind power forecast scheme based at least in part on the computed difference values and balancing a penalty to the grid with life consumption of the energy storage units while regulating the wind turbines and the energy storage units based at least in part on a subsequent forecasted wind farm power estimate generated using the identified wind power forecast scheme.

Abstract: The invention relates to a turbine which can generate an electric current, comprising a motor and a stator. The rotor is formed by a blade having a permanent magnet mounted thereon. The stator includes first and second coils which are positioned close to one another and have substantially orthogonal winding axes, said coils co-operating with the permanent magnet in order to generate the electric current.

Abstract: The present invention relates to a method of stacking wind turbine blades for sea transport. An improved way of arranging blades for sea transport, where less structural framework is needed, would be advantageous. Structural framework not only causes additional cost, but also takes up additional time for arranging the blades for transport.

Abstract: The present invention relates to a lightning current transfer system (100) adapted for usage in a wind turbine (W) having a hub (20) that is rotatably supported relative to a generator in a nacelle (30) and a plurality of blades (10) that are pivotably connected with the hub, wherein the hub (20) is covered by a spinner (20A). The lightning current transfer system (100) comprises a blade band (10A) mountable to the root of the blade (10); a lightning ring (80) mountable to the spinner (20A) facing the nacelle (30); a first contact device (70) mountable to the spinner (20A) adapted for providing lightning current transfer from the blade band (10A); a connecting device (75) for connecting the first contact device (70) with the lightning ring (80); and a second contact device (30B) mountable to the nacelle (30) and adapted for providing lightning current transfer from the lightning ring (80) to ground.

Abstract: A method for repairing an electrical heating element of a wind turbine rotor blade has the steps of identifying a region of the heating element that has a defect and applying a thermally conductive repair layer to the identified region. The repair layer is thermally conductive and is electrically insulating at least on an underside facing the defect.

Abstract: It is intended to provide a vehicle comprising a fluid working machine which can reduce wear of parts and be produced at low cost. The fluid working machine 11, 12 is provided with an eccentric cam 17, a piston 18A to 18F, a cylinder 19A to 19F, a drive rod 20A-20F having an engaging part 24 engaging with the piston and a contact part 25 contacting the eccentric cam 17, a holding member 34A to 34F surrounding the drive rod, a pressing member 40A to 40F for pressing up the holding member in a radially outward direction, and at least one holding ring 41 for holding the holding member from the outside.

Abstract: A tilting angle control device includes pressure sensors. Each of the pressure sensors outputs to a control unit a pressure command signal corresponding to an operation amount. The control unit outputs to an electromagnetic proportional control valve a pressure control signal corresponding to the pressure command signal, and the electromagnetic proportional control valve outputs to a tilt adjustment mechanism pilot pressure corresponding to the pressure control signal. The tilt adjustment mechanism adjusts a tilting angle of a variable displacement pump such that the tilting angle becomes an angle corresponding to the pilot pressure. A pilot pressure sensor detects the pilot pressure to output a pressure feedback signal to the control unit. The control unit calculates the pressure control signal based on the pressure feedback signal and the pressure command signal and performs feedback control of the pilot pressure.

Abstract: A pressure-driven metered treating chemistry dispensing pump for a laundry treating appliance having a housing having first, second and third chambers, with the first and second chambers each in fluid communication with the third chamber; a fluid inlet fluidly coupling a first fluid to the first chamber; an outlet fluidly coupled to the third chamber; a piston disposed in the housing; wherein, when the piston moves in a first direction in response to the first fluid entering the first chamber via the fluid inlet, the second chamber decreases in volume thereby ejecting at least some of the second fluid from the second chamber into the third chamber, and when the piston moves in a second direction, different from the first direction, the first chamber decreases in volume thereby ejecting at least some of the first fluid from the first chamber into the third chamber to mix the at least some of the first fluid and the at least some of the second fluid to form a mixture in the third chamber, which can be emitted t

Abstract: A cryogenic pump system includes a supply of liquid natural gas, a source of hydraulic fluid, a cryogenic pump, and an electronic control module. The cryogenic pump is operatively arranged with the supply of liquid natural gas and the source of hydraulic fluid. The cryogenic pump is configured to operate using the source of hydraulic fluid to compress at least some of the supply of liquid natural gas for delivery to an engine. The electronic control module is operably arranged with the cryogenic pump and configured to selectively operate the cryogenic pump. Control strategies for operating the cryogenic pump system are disclosed which have reduced power demands.

Abstract: A fuel pump includes a plunger that reciprocates in a cylinder. The fuel pump further includes a first mover connected to the plunger, a second mover serving as a counterweight for the first mover, an electromagnet provided between the first mover and the second mover, a first magnetic member provided between the first mover and the second mover, and a first spring urging the first mover and the second mover away from each other. Further, a second magnetic member is provided between both of the electromagnet and the first magnetic member and a first inclined surface of the first mover, while a third magnetic member is provided between both of the electromagnet and the first magnetic member and a second inclined surface of the second mover.

Abstract: A variable displacement type swash plate compressor includes a housing having therein a suction chamber, a discharge chamber, a control pressure chamber, a shaft hole, and cylinder bores. The compressor further has a drive shaft, a swash plate, an inclination angle changing mechanism, pistons, introduction passages, and a valve mechanism. The valve mechanism includes a valve element is disposed in a passage connecting the control pressure chamber and the suction chamber. The valve element is integrally rotatable with the drive shaft and axially movable by a pressure difference across the valve element. An opening of the residual gas bypass passage is changed by the axial movement of the valve element. The valve element selectively connects and disconnects the introduction passages with the residual gas bypass passage.

Abstract: The present subject matter provides a linear compressor. The linear compressor includes a coupling having a ball seat that is press-fit on a post of a piston. A shaft defines a chamber at an end of the shaft. A pin is press-fit to the shaft at the chamber of the shaft. A ball is positioned on the seating surface of the ball seat. The pin extends through the ball. A ball shoe is positioned opposite the ball seat about the ball. The ball shoe defines a seating surface. The ball is positioned on the seating surface of the ball shoe. A spring urges the ball shoe against the ball.

Abstract: A pump is provided having a communication portion that provides continuous communication between a pump section and a discharge section in a state where a discharge-side check valve suppresses a backflow, and a size of the communication portion is set so that, when the continuously expanding and contracting pump section contracts, a volume of gas mixed in liquid in the pump section is contracted.

Abstract: A system and method for flooded start control of a compressor are provided. An ambient temperature sensor generates ambient temperature data and a compressor temperature sensor generates compressor temperature data.

Abstract: A variable displacement compressor includes a control valve and a check valve. The control valve is in fluidic communication with a discharge chamber of the compressor and a crankcase of the compressor. The check valve is interposed between the control valve and the discharge chamber. The check valve is configured to allow flow from the discharge chamber to the control valve and to prevent flow from the control valve to the discharge chamber. The check valve includes a ball and a spring. The spring is configured to urge the ball toward a closed position. The spring is characterized by a rate of the spring and a free-length of the spring, and the rate and the free-length are selected to minimize de-stroke noise caused by a rapid change of the compressor operation to a low displacement state.

Abstract: A self-centering valve adapter connection assembly includes a first equipment flange that is connected to a second equipment flange with an adapter ring. The adapter ring includes a first longitudinal flange with a tapered inner surface and a cylindrical outer surface. The adapter ring aids in centering the first and second equipment flanges while smoothing a fluid flow corridor between the first equipment flange and the second equipment flange.

Abstract: This internal gear pump accommodates: a ring-shaped internally toothed gear provided with internal teeth, and an externally toothed gear provided with external teeth which internally mesh with the internal teeth of the internally toothed gear, said externally toothed gear being eccentrically disposed inside the internally toothed gear. The number of internal teeth is one greater than the number of external teeth. In any one of the external teeth and the internal teeth, a tooth tip section and a meshing section are formed by a curve having one continuous curvature. The curve is formed by an equation with which the maximum curvature is at the apex of the tooth tip, and the curvature gradually reduces towards the tooth bottom section.

Abstract: The internal gear pump according to the present invention includes: an inner rotor; an outer rotor that rotates with predetermined eccentricity to a rotation center of the inner rotor; an outer ring that rotatably holds the outer rotor, and has at least three cam protruded parts formed; a pump housing that has a rotor chamber; pins in the same number as that of the cam protruded parts; and operation means for oscillating the outer ring. Positions of the pins are set so that a diameter center of the holding-inner peripheral part of the outer ring is moved by the operation means along a locus of a circle, the radius of which is the eccentricity to the rotation center of the inner rotor.

Abstract: A compressor may include first and second scrolls, a seal assembly and a valve ring. The first scroll may include a first end plate having a discharge passage, a modulation port, and a biasing passage. The modulation port may be in communication with a first pocket formed between spiral wraps of the first and second scrolls. The biasing passage may be in communication with a second pocket formed between spiral wraps of the first and second scrolls. The modulation valve ring is axially displaceable relative to the seal assembly and the first scroll between first and second positions. The valve ring may abut an end plate of the first scroll and close the modulation port when in the first position. The valve ring may abut an axially-facing surface of the seal assembly and is spaced apart from the end plate to open the modulation port when in the second position.

Abstract: Scroll compressor with a stationary, stator scroll and a movable rotor scroll and a drive to move the rotor, whereby in each position places are formed with an instantaneous minimum opening between the rotor scroll and the stator scroll whereby at each height in a minimum opening there is a local transverse internal clearance (S), whereby at least one of the stator flanks or rotor flanks comprises an adapted flank section with an initial local stator flank deviation (?T0i, AT0u) or rotor flank deviation (?R0i/AR0u) that is different to zero at each point when the rotor is stationary, and during nominal operation of the scroll compressor corresponding instantaneous final local stator flank deviations (?Tfi, ?Tfu) or rotor flank deviations (?Rfi, ?RfU) whose absolute values are smaller.

Abstract: A scroll compressor of the present invention includes a first discharge port 35 which is in communication with a compression chamber 50, a discharge space 30H which is in communication with the first discharge port 35, a second discharge port 21 which brings the discharge space 30H into communication with a high pressure space 11, a discharge check valve 131 capable of closing the second discharge port 21, a bypass port 36 which brings the compression chamber 50 into communication with the discharge space 30H, and a bypass check valve 121 capable of closing the bypass port 36, the fixed scroll 30 can move in an axial direction of the fixed scroll between the partition plate 20 and the main bearing 60, a high pressure is applied to the discharge space 30H and according to this, the fixed scroll 30 can be pressed against the orbiting scroll 40.