Thu, 27 Oct 2016 08:00:00 EDTA gas turbine system include a first body including a central passage extending from a mixing region to a central outlet at a first downstream end portion of the first body, a fuel outlet in the mixing region, an oxidant outlet in the mixing region, and an outer passage including a first passage extending in a downstream direction toward the first downstream end portion and a second passage extending in an upstream direction from the first downstream end portion into the mixing region.
Thu, 27 Oct 2016 08:00:00 EDTA premix pilot nozzle includes a tip portion having a downstream surface that extends between a downstream end of an inner wall of the tip portion and a downstream end of an outer wall of the tip portion. The downstream end of the inner wall terminates axially upstream from the downstream end of the outer wall. At least a portion of the downstream surface is curvilinear. The tip portion further comprises a plurality of axially extending premix tubes annularly arranged about the tip portion. Each premix tube defines a premix flow passage through the tip portion. Each premix tube also includes an outlet that is axially offset from the downstream surface.
Thu, 27 Oct 2016 08:00:00 EDTA heat shield for use in a combustor of a gas turbine engine including an attachment stud that extends from a cold side, the attachment stud at least partially hollow. A method of manufacturing a heat shield of a combustor for a gas turbine engine including additively manufacturing an attachment stud that extends from a cold side of said heat shield the attachment stud including a plurality of stud film cooling holes through the attachment stud.
Thu, 27 Oct 2016 08:00:00 EDTA heat shield for use in a combustor of a gas turbine engine including a plurality of standoff pins that extend from a cold side, the plurality of standoff pins at least partially surround an attachment stud, the cold side including at least one film cooling hole adjacent to the plurality of standoff pins and the attachment stud.
Thu, 27 Oct 2016 08:00:00 EDTA hydrostatic transmission for a traction drive includes a first hydraulic machine that is coupled to a drive machine and that has an adjustable displacement volume and a second hydraulic machine that is fluidically connected to the first hydraulic machine and that is coupled to a drive output of the traction drive. At the first hydraulic machine, a control pressure acts in the direction of an enlargement of its displacement volume and a working pressure of the second hydraulic machine acts in the opposite direction. The hydrostatic transmission further includes a control device that varies the control pressure to influence a torque of the second hydraulic machine. The control device stores a characteristic map by which a setpoint control pressure is determined as a function of a setpoint torque and a displacement volume of the second hydraulic machine so as to regulate the torque of the second hydraulic machine.
Thu, 27 Oct 2016 08:00:00 EDTAn independent metering valve circuit includes an actuator, a set of independent metering valves, an independent metering valve pre-compensator, an inverse resolver, and a signal conditioning element. The set of independent metering valves are fluidly coupled to the actuator and configured to independently control a flow of a hydraulic fluid to the actuator. The independent metering valve pre-compensator is configured to control the flow of the hydraulic fluid to the set of independent metering valves. The inverse resolver is configured to receive a first pressure signal from the independent metering valve circuit and a second pressure signal from a load-sense hydraulic system and output a third pressure signal. The signal conditioning element is configured to receive the third pressure signal and output a forth pressure signal configured to control a pump fluidly coupled to the load-sense hydraulic system and the independent metering valve circuit.
Thu, 27 Oct 2016 08:00:00 EDTThe invention relates to an apparatus (10) for blocking and for adjusting a pressure for a hydraulically controllable actuator mechanism (12), in particular in the form of a lifting unit (16) of a machine (18). Said apparatus (10) allows at least one working chamber (20, 22) to be selectively connected to a pressure supply unit (94) comprising a storage device (34) or to a discharge end (66), in particular a reservoir end, by means of a valve unit (38). The apparatus (10) of the invention is characterized in that in a controlling position of the valve unit (38), when the storage pressure in the storage device (34) is greater than the working pressure in the at least one working chamber (20) of the actuator mechanism (12), the storage pressure is relieved in the direction of the discharge end (66) until the working pressure has been reached.
Thu, 27 Oct 2016 08:00:00 EDTA fan blade capable of dissipating a buildup of electrostatic charge configured for operation within the fan assembly of a gas turbine engine. The fan blade has a fan blade body covered in a static dissipative coating. A conductive ground tab is attached to the front face of an airfoil root of the fan blade. Connected to the ground tab, a conductive flow path travels up the neck portion of the airfoil and along a lower portion of the fan blade. As static charge builds up on the fan blade, the electrostatic charge migrates down the fan blade and into the conductive flow path. Traveling along the conductive flow path the buildup of electrostatic charge accumulates on the conductive ground tab and exits the fan blade through contact with a disc rotor covering touching the conductive ground tab.
Thu, 27 Oct 2016 08:00:00 EDTA device (1) for generating energy on the basis of wave motion comprises a rotatably arranged basic body (10); an elongated, rod-shaped body (20) which is connected to the basic body (10), and which has buoyancy with respect to sea water; an arm (30) which extends between the basic body (10) and the rod-shaped body (20) and interconnects these two bodies (10, 20); and a main shaft (40) which is connected to the basic body (10) for the purpose of being driven by the basic body (10). The rod-shaped body (20) is destined to be moved in and out of the water under the influence of wave motion, and of a rotary movement of the basic body (10), which performs a flywheel function during operation of the device (1). Due to this, the said rotary movement can be maintained.
Thu, 27 Oct 2016 08:00:00 EDTAn intake unit having an integrated charge air cooler is suited for use in an internal combustion engine provided with an exhaust gas turbocharger and having cylinders which are part of a machine housing including a cylinder housing and a cylinder head including inlet ducts, to which inlet ducts the intake unit is routed by connecting ducts. The intake unit includes a unit container having a first container section with connecting ducts, this section being connected to a second container section accommodating the charge air cooler. The second container section is connected to a third container section that carries the air to the charge air cooler. To optimize the intake unit, the internal combustion engine is provided in the form of an outboard motor and the machine housing includes a vertical crankshaft system with two crankshafts and horizontal cylinders. The exhaust gas turbocharger created by a turbine and a charger is disposed on a top front side of the machine housing. The first container section, the second container section, and the third container section are combined as one integral unit to form an intake unit module composed of a light alloy. The third container section is created as a tubular body that tapers down from the second container toward the charger.
Thu, 27 Oct 2016 08:00:00 EDTAn EGR valve assembly includes an intake gas passage, an exhaust gas passage, an outlet passage, a movable intake gas flap for changing an effective cross section of the intake gas passage and a movable exhaust gas flap for changing an effective cross section of the exhaust gas passage. The intake gas flap includes at least one channel connecting an inlet port on a upstream-side surface of the flap with an outlet port on a downstream-side surface of the flap.
Thu, 27 Oct 2016 08:00:00 EDTA rocket propulsion chamber and a method of fabricating such a propulsion chamber are provided. The propulsion chamber includes a combustion chamber, a wall of the combustion chamber having a cooling circuit wherein a first propellant flows. A thermostructural composite material shell is placed against the outside of the combustion chamber and including a diverging nozzle extending beyond the bottom end of the combustion chamber, wherein a fraction of the thermostructural composite material shell is covered in a radially strong outer reinforcing shell for containing deformation of the combustion chamber and thermostructural composite material shell, the thermostructural composite material shell and the outer reinforcing shell forming a unitary assembly.
Thu, 27 Oct 2016 08:00:00 EDTA turbine pump assembly has a turbine, a centrifugal pump, a passive electrical speed control system, and a pneumatic circuit breaker. The pneumatic circuit breaker has a plurality of elements that are configured to move to a position blocking an outlet duct of the turbine when a flow velocity exceeds a predetermined threshold. A rocket thrust vector control system is also disclosed.
Thu, 27 Oct 2016 08:00:00 EDTA turbine pump assembly includes a turbine, a centrifugal pump and a passive electrical speed control system. The passive electrical speed control system has a generator and a valve control solenoid, which receives current from the generator. A rocket thrust vector control system is also disclosed.
Thu, 27 Oct 2016 08:00:00 EDTThe present disclosure relates generally to a system for fan nacelle inlet flow control in a gas turbine engine, the nacelle comprising a nacelle inlet cowl including an inlet lip disposed at a leading edge of the nacelle inlet cowl, an inner surface extending aft from the inlet lip, and an outer surface extending aft from the inlet lip and positioned radially outward of the inner surface; and at least one flow control passage extending through the nacelle inlet cowl, each of the at least one flow control passage including a flow control passage inlet, disposed on the inlet lip, and a flow control passage outlet; wherein air may flow into the flow control passage inlet, through the flow control passage, and exits the flow control passage outlet.
Thu, 27 Oct 2016 08:00:00 EDTModified calibration strategies for controlling an internal combustion engine and monitoring catalyst performance are disclosed. The modified calibration strategies are implemented using an engine and test cell/catalyst chamber setup wherein the engine is a Euro V 1.2 L turbo gasoline direct injection engine and test cells/catalyst chamber are implemented as substantially free of platinum group metals (PGM) catalysts, herein referred as ZPGM catalysts, and synergized PGM (SPGM) catalysts including a stoichiometric spinel structure within the catalyst configuration. The utilization of an open ECU enables the modified calibration of the engine out targeted AFR. The conventional ECU AFR control strategies are not modified to have the ECU AFR control strategies to continue running normally and only the final engine out targeted AFR values are modified by applying offset AFR values. The modified calibration strategies improve engine operation and catalyst conversion efficiency of the ZPGM and SPGM catalysts including the spinel structures.
Thu, 27 Oct 2016 08:00:00 EDTA rich control for temporarily declining an air-fuel ratio of exhaust gas discharged from an engine combustion chamber is performed by an additional fuel being injected into a cylinder in an expansion stroke or an exhaust stroke in a state where a throttle opening degree is switched from a base throttle opening degree to a throttle opening degree for the rich control and an EGR rate is switched from a base EGR rate to an EGR rate for the rich control. The rich control is terminated by returning the throttle opening degree (VTH) to the base throttle opening degree (VTHB), stopping the injection of the additional fuel (Qa), and temporarily increasing the amount of a main fuel (Qm). Then, an EGR control valve opening degree (VEGR) is controlled such that the EGR rate (REGR) is returned to the base EGR rate (REGRB).
Thu, 27 Oct 2016 08:00:00 EDTMethods and systems are provided for regenerating a NOx storage catalytic converter of a multi-cylinder internal combustion engine comprising selectively switchable cylinders. During permissible engine operating conditions, the switchable cylinders may be deactivated in order to regenerate the NOx storage catalytic converter using the rich exhaust from the active cylinders blended with un-combusted gas from the deactivated cylinders.
Thu, 27 Oct 2016 08:00:00 EDTA supercharged engine includes an emission control device configured to add a reduction agent to exhaust gas from an engine main body to reduce nitrogen oxide in the exhaust gas by a catalyst, the supercharged engine including an air release valve configured to discharge a part of supplied air to be supplied from a supercharger to the engine main body through an air feed pipe to the outside of the air feed pipe, and a control device configured to control temperature of the exhaust gas by operating the air release valve and adjusting an amount of supply of the supplied air to be supplied from the supercharger to the engine main body.
Thu, 27 Oct 2016 08:00:00 EDTThe invention relates to a method and to a motor vehicle for diagnosing an exhaust gas catalytic converter (28), which is arranged in an exhaust gas tract (20) of an internal combustion engine (12) and is suitable for converting at least one exhaust gas component, wherein the exhaust gas tract (20) has an exhaust gas sensor (48) arranged upstream of the exhaust gas catalytic converter (28) and has an exhaust gas recirculation system (38), which is designed to remove at least part of the exhaust gas from an exhaust gas duct (24) of the exhaust gas tract (20) downstream of the exhaust gas catalytic converter (28) and to feed the removed exhaust gas to the internal combustion engine (12). The method comprises the following steps: measuring a first concentration (NOX1) of the exhaust gas component upstream of the exhaust gas catalytic converter (28) by means of the exhaust gas sensor (48) during fueled operation of the internal combustion engine (12), recirculating at least part of the exhaust gas by means of the exhaust gas recirculation system (38) during unfueled overrun of the internal combustion engine (12), measuring a second concentration (NOX2) of the exhaust gas component by means of the exhaust gas sensor (48) during the unfueled overrun of the internal combustion engine (12), and determining a state of the exhaust gas catalytic converter (28) in dependence on the first and second concentrations (NOX1, NOX2) of the exhaust gas component.
Thu, 27 Oct 2016 08:00:00 EDTA gas turbine engine comprises a main compressor section having a high pressure compressor with a downstream most end, and more upstream locations. A turbine section has a high pressure turbine. A first tap taps air from at least one of the more upstream locations in the main compressor section, passing the tapped air through a first heat exchanger and then to a cooling compressor. A second tap taps air from a location closer to the downstream most end than the location of the first tap, and the first and second taps mix together and are delivered into the high pressure turbine. The cooling compressor is positioned downstream of the first heat exchanger, and upstream of a location where air from the first and second taps mix together.
Thu, 27 Oct 2016 08:00:00 EDTA pneumatic starter system for a turbine engine. The pneumatic starter system includes a pneumatic starter and a compressed gas storage unit. The pneumatic starter is configured to cause at least one turbine of the turbine engine to rotate. The compressed gas storage unit is configured to store oxygen rich gas and expel the oxygen rich gas to power the pneumatic starting system to cause the at least one turbine to rotate. The pneumatic starter system also includes a first exhaust path configured to direct at least a first portion of the oxygen rich gas exhausted from the pneumatic starter to a turbine combustion zone of the turbine engine to create an oxygen rich fuel mixture.
Thu, 27 Oct 2016 08:00:00 EDTA method detects a failure in a fuel return valve of an aircraft engine fuel circuit. A fuel system is connected to a fuel tank of the circuit and includes a high-pressure pump delivering a flow rate to an actuating cylinder, a cutoff valve capable of feeding the actuating cylinder disposed in a feed pipe of the engine; a fuel return pipe; a fuel return valve arranged to switch between an open position and a closed position. The method includes starting the engine at an engine speed; increasing the engine speed until a flow rate reaches a predefined value sufficient for opening the cutoff valve; measuring the position of the actuating cylinder and an engine speed corresponding to the opening of said cutoff valve.
Thu, 27 Oct 2016 08:00:00 EDTA method is disclosed of disassembling a gas turbine which includes a combustor, a liner, a turbine vane carrier (TVC) and an outer housing, the method including disengaging the liner from the TVC and removing the TVC from the gas turbine. The liner is disengaged from the TVC before the TVC is removed, the liner remains inside the outer housing and the combustor remains in the outer housing.
Thu, 27 Oct 2016 08:00:00 EDTIn accordance with at least one aspect of this disclosure, a turbomachine cooling system includes a first low pressure port disposed in a low pressure portion of a turbomachine and a first high pressure port disposed in a high pressure portion of the turbomachine and in selective fluid communication with the first low pressure port via a cooling channel. The high pressure portion of the turbomachine is configured for a higher compression than the low pressure portion of the turbomachine where the first low pressure port is disposed. The cooling system can include a heat exchanger system disposed in the cooling channel such that a flow traveling from the first high pressure port to the first low pressure port is cooled by the heat exchanger system before traveling through the first low pressure port into the low pressure portion of the turbomachine.
Thu, 27 Oct 2016 08:00:00 EDTAn example flow control assembly includes a door that is moved to control flow through a heat exchanger, and a pneumatic device to move the door.
Thu, 27 Oct 2016 08:00:00 EDTA radiant syngas cooler is provided and includes a vessel shell defining an interior region for cooling of syngas. The cooler also includes a tube cage comprising a plurality of tubes, each having a first end and a second end. The cooler further includes a plurality of platen tubes located radially inwardly from the tube cage. The cooler yet further includes a pipe fluidly coupling the second end of the plurality of tubes with an inlet of the plurality of platen tubes. The cooler also includes an outlet pipe fluidly coupling an outlet of the plurality of platen tubes with a steam usage structure. The cooler further includes an inlet pipe fluidly coupling the steam usage structure to the first end of the plurality of tubes of the tube cage.
Thu, 27 Oct 2016 08:00:00 EDTThe invention relates generally to electrical power systems, including generating capacity of a gas turbine, and more specifically to pressurized air injection that is useful for providing additional electrical power during periods of peak electrical power demand from a gas turbine system power plant, as well as to inlet heating to allow increased engine turn down during periods of reduced electrical demand
Thu, 27 Oct 2016 08:00:00 EDTA lubrication system for a gas turbine engine may include a pump for moving a lubricant through a conduit from a lubricant tank to an engine component. Further, a scheduling valve positioned in the conduit between the lubricant tank and the engine component may vary a flow of the lubricant to the engine component based on a condition.
Thu, 27 Oct 2016 08:00:00 EDTThe present invention relates to a gasification combined generation system including: a slurry mixer adapted to receive the coal and industrial waste water thereto and mix them to make a uniform-quality slurry; a slurry storage adapted to receive the uniform-quality slurry from the slurry mixer and store the slurry therein; a slurry pump adapted to convey the slurry from the slurry storage; a slurry gasifier adapted to gasify the slurry with at least one of oxygen and air as an oxidizer and produce gas and slag from the gasified slurry; a gas analyzer adapted to analyze the components of the gas discharged from the slurry gasifier; a gas purifier adapted to purify the discharged gas; a generator adapted to utilize the purified gas as a fuel to generate electricity; and a slag discharger adapted to discharge the slag therefrom.
Thu, 27 Oct 2016 08:00:00 EDTA disclosed gas turbine engine includes a fan section including a hub supporting a plurality of fan blades rotatable about an axis, and a bearing assembly supporting rotation of the hub about the axis. A compressor section is in fluid communication with a combustor and a turbine is in fluid communication with the compressor section. A speed reduction device driven by the turbine section for rotating the fan about the axis is mounted forward of the bearing assembly supporting rotation of the hub.
Thu, 27 Oct 2016 08:00:00 EDTA compressor for an internal combustion engine is provided. The compressor includes a compressor shaft having compressor blades attached thereto, positioned in an intake air duct, and rotating about an axis during compressor operation and a magnetic bearing positioned upstream of the compressor blades in the intake air duct, including a ring positioned around the compressor shaft, stator electrics arranged in the ring, and at least two magnets arranged on the compressor shaft configured to exert a magnetic force on the stator electrics to form an air gap between the ring and the compressor shaft.
Thu, 27 Oct 2016 08:00:00 EDTMethods and systems are provided for adjusting flow of exhaust gas from downstream of an exhaust turbine outlet to an exhaust gas aftertreatment device inlet via a compact turbine outlet cone with adjustable swirl vanes. Exhaust flow reaching the exhaust gas aftertreatment device is adjusted based on a desired exhaust gas temperature and exhaust gas flow rate at the aftertreatment device. During cold start conditions, the swirl vanes may be closed to concentrate exhaust gas flowing towards a portion of the aftertreatment device while after attainment of aftertreatment device light-off temperature, the position of the swirl vanes may be adjusted to introduce turbulence and homogeneity to exhaust flow reaching the exhaust aftertreatment device.
Thu, 27 Oct 2016 08:00:00 EDTA turbocharger device includes: a turbocharger (3); and a turbo controller (35) configured to control a waste-gate valve (31) or a variable-displacement mechanism of an exhaust-gas amount supplied to the turbine to control a boost pressure of the turbocharger, the turbo controller (35) including a control calculation part (44) and a sensor signal input part (15) provided separately and independently from an engine controller (33) and being mounted to a compressor housing at a side of the compressor (23b) of the turbocharger (3).
Thu, 27 Oct 2016 08:00:00 EDTA supercharged internal combustion engine includes at least two exhaust-gas turbochargers arranged in series, wherein a first exhaust-gas turbocharger serves as a low-pressure stage and a second exhaust-gas turbocharger serves as a high-pressure stage. A second turbine of the second exhaust-gas turbocharger may be present upstream of a first turbine of the first exhaust-gas turbocharger, and a second compressor of the second exhaust-gas turbocharger may be arranged in an intake system downstream of a first compressor of the first exhaust-gas turbocharger and a first bypass line may branch off upstream of the second turbine and join back at a junction point between the first turbine and the second turbine.
Thu, 27 Oct 2016 08:00:00 EDTA crankcase ventilation system for a turbocharged engine has full bi-directional flow for an idle state and a boosted state. A PCV valve provides air flow from the crankcase to the intake manifold in the idle state. A restriction in a first vent line limits fresh air into the crankcase in the idle state. A PCV bypass permits a one-way flow into the crankcase via a second vent line bypassing the PCV valve in the boosted state. A pressure relief valve in communication with the first vent line is configured to bypass the restriction in the boosted state when a pressure in the crankcase exceeds a threshold pressure. In a preferred embodiment, the PCV bypass is configured to bypass both the PCV valve and a pull separator (i.e., oil separator at the second vent line) in the boosted state.
Thu, 27 Oct 2016 08:00:00 EDTThe invention relates to a method and a device, in particular a control and evaluation unit, for operating at least one exhaust gas sensor for monitoring the functionality of an emission control system in the exhaust tract of an internal combustion engine, wherein the exhaust gas sensor is operated at least intermittently at high temperatures and has a thermal shock sensitivity inherent to the design, and in which a heating phase can be implemented at least intermittently prior to a regeneration phase or prior to a measuring operation phase, wherein a clearly lower temperature is set in this heating phase in comparison to the regeneration temperature or the measuring operation temperature. According to the invention, the function for dew point recognition and re-release of a dew point end is adaptively implemented and influenced by at least one water detection criterion or at least one flood detection criterion. By this means, an improved dew point detection is achieved after driving through water, as a result of a significant reduction of tolerances and an earlier release of the dew point end for the exhaust gas sensor.
Thu, 27 Oct 2016 08:00:00 EDTA mixer for an exhaust system of an internal combustion engine for mixing additives into an exhaust gas flow, with at least one inlet pipe having a pipe axis, with at least one outlet pipe having a pipe axis and with a housing for receiving the inlet pipe and the outlet pipe, wherein the outlet pipe has an inner part which is arranged within the housing and is provided with at least one outflow opening for the purpose of conducting the exhaust gas out of the housing, wherein the housing has a first housing part with a first housing edge and at least one second housing part with a second housing edge, wherein the two housing parts are at least partially connected via the housing edge, and in that the inlet pipe has an inner part which is arranged within the housing and is provided with at least one inlet opening for the purpose of introducing the exhaust gas into the housing, wherein a) the respective housing edge as at least two formations, each having a center axis, and/or b) the respective housing part has at least two rim holes, each having a center axis, and the respective pipe has bearing points via which said pipe is mounted within the formations or within the rim holes, wherein i) the respective pipe is formed symmetrically with respect to the design of the bearing points, and, for the purpose of installation, can be mounted in at least two different positions R1, R2 in the respective formation, or ii) the inlet pipe and the outlet pipe are of identical design with respect to the design of the bearing points, or iii) the two housing parts are connectable in a plurality of positions S1, S2 relative to each other via the housing edge.
Thu, 27 Oct 2016 08:00:00 EDTAn assembly (10) for introducing a reducing agent into the exhaust pipe (12) of an exhaust system of an internal combustion engine, in particular of a motor vehicle, has a feed connector (14) which opens into the exhaust pipe (12) and includes a wall (16), a feed device (20) for reducing agents which opens into the feed connector (14), and a device (22) for generating a gas flow (G) which is additional to the reducing agent flow (R) and lines the wall (16) of the feed 10 connector (14). Furthermore, there is described a method of introducing a reducing agent into the exhaust pipe (12) of an exhaust system of an internal combustion engine, in particular of a motor vehicle.
Thu, 27 Oct 2016 08:00:00 EDTA method and apparatus to reduce emissions by gas membrane separation and liquid carrier chemical absorption. The membrane separation system consists of an absorption system containing ceramic membranes through which is circulated an absorbent carrier. Exhaust gases contact the exterior surface of the membranes and the target gasses permeate the membrane wall and are absorbed by the carrier(s) within the bore and thereby are removed from the exhaust stream. Various exemplary embodiments are described for systems to regenerate the carrier, and systems designed to remove SO2 from the exhaust. One option uses an electrostatic charger to place a charge on the gas particles, while another uses a corona generator. In this aspect, the invention is also an improved electrostatic and corona separator, that uses a carrier liquid separated from the gas stream by a membrane to bear away undesirable particles instead of a deposit or collection plate or collection bag or similar device.
Thu, 27 Oct 2016 08:00:00 EDTA process for recovering performance of a component of an aftertreatment system. The component includes an inlet and an outlet. The inlet is positioned upstream relative to an exhaust gas flow through the aftertreatment system, and the outlet is positioned downstream relative to the exhaust gas flow through the aftertreatment system. The process includes removing the component from the aftertreatment system. The process also includes regenerating the component, such as subjecting the component to an acid wash and/or heat treating the component. The process further includes reinstalling the component into the aftertreatment system with the inlet positioned downstream relative to the exhaust gas flow through the aftertreatment system and the outlet positioned upstream relative to the exhaust gas flow through the aftertreatment system.
Thu, 27 Oct 2016 08:00:00 EDTA heat reservoir including a housing, first reservoir elements for storing thermal energy, and an inlet port is provided. The first reservoir elements are arranged in the housing. The inlet port is coupled to the housing in such a way that a working fluid can flow into the housing through the inlet port. The inlet port is provided with an inlet orifice through which the working fluid can flow from the surroundings of the heat reservoir into the inlet port. The inlet port includes a diffusor portion the cross-section of which increases in the direction running from the inlet orifice to the housing.
Thu, 27 Oct 2016 08:00:00 EDTAn airfoil assembly has at least one cooling hole in an aft edge of at least one platform for cooling at least one of an axially downstream airfoil root and/or tip region. The airfoil assembly may be a high pressure turbine first stage vane coupled with a combustor operating at a low Pattern Factor.
Thu, 27 Oct 2016 08:00:00 EDTAn exhaust gas diffuser for a gas turbine engine whose inlet geometry can be selectively controlled to change the angular orientation of the diffuser at the location where the exhaust gas exits the last stage row of blades of the turbine section of the gas turbine engine. An end portion of the gas diffuser proximate the last stage row of blades can include one or more actuated sections that are independently controlled to change the angular orientation of the inlet geometry of the diffuser. In one embodiment, the angular orientation of the actuated sections is set at the manufacturing level for the service location of the engine. In another embodiment, the angular orientation of the actuated sections is selectively controlled based on the operating conditions of the engine. In another embodiment, the angular orientation of the actuated sections is controlled by pneumatic pressure from a compressor section of the engine.
Thu, 27 Oct 2016 08:00:00 EDTA blade outer air seal (BOAS) for a gas turbine engine according to an exemplary aspect of the present disclosure includes, among other things, a seal body having a radially inner face and a radially outer face that axially extend between a leading edge portion and a trailing edge portion. A retention flange extends from the leading edge portion and a leaf seal contacts the retention flange.
Thu, 27 Oct 2016 08:00:00 EDTA component according to an exemplary aspect of the present disclosure includes, among other things, a body, a wall extending inside of the body and a plurality of vortex promoting features arranged in a helical pattern along the wall.
Thu, 27 Oct 2016 08:00:00 EDTA turbine engine airfoil includes a first surface to be cooled by a flow of cooling air. The first surface includes a pedestal array and a first row of contour bumps. The pedestal array includes first and second rows of pedestals extending from the first surface. The second row of pedestals runs in a direction generally parallel to the first row of pedestals. The first row of contour bumps extends from the first surface between the first row of pedestals and the second row of pedestals and runs parallel to the first row of pedestals. The first row of contour bumps is aligned such that at least one of the contour bumps of the first row of contour bumps is positioned at least one of immediately downstream of a pedestal of the first row of pedestals and immediately upstream of a pedestal of the second row of pedestals.
Thu, 27 Oct 2016 08:00:00 EDTA film cooled component may comprise a cooling chamber and a first ligament centered about a first axis. The first ligament may be in fluid communication with the cooling chamber. A first meter may be disposed at an end of the first ligament. A first diffuser may extend from the first meter to a surface of the film cooled component. The first diffuser may comprise a first tapered sidewall oriented at an angle of between 5 degrees to 15 degrees relative to the first axis. The first diffuser may further comprise a first non-tapered sidewall oriented at an angle less than 5 degrees relative to the first axis.
Thu, 27 Oct 2016 08:00:00 EDTA flow system for use in a gas turbine engine includes a diffuser case strut defining a first opening at a first radial end, a second opening at a second radial end, and a strut passage radially therethrough between the first and second openings. A first chamber wall and a second chamber wall define a first mixing chamber disposed radially inward of the diffuser case strut in fluid communication with the strut passage. A third chamber wall extends between the second flowpath wall and the second chamber wall to define a second mixing chamber disposed between the diffuser case strut and the first mixing chamber. The second flowpath wall and the second chamber wall are shaped to form a venturi in the second mixing chamber.
Thu, 27 Oct 2016 08:00:00 EDTThe present disclosure relates to a control circuit and a control method for boom energy regeneration, and the control circuit for boom energy regeneration includes: a control unit which controls a discharge amount control valve, such that the amount of oil, which is discharged from a head of a boom cylinder, is supplied to a regeneration device or a rod of the boom cylinder through a hydraulic regeneration line, and when the regeneration device has an abnormality, the amount of oil, which is discharged from the head of the boom cylinder, is supplied to the main control valve through a hydraulic discharge line.