Abstract: The invention relates to a method for detecting a leak in a thermodynamic cycle device with a condenser for condensing vaporous working medium, comprising the following steps: determining sub-cooling of the working medium in the condenser, wherein sub-cooling is determined as a difference between a condensation temperature in the condenser and a temperature of a liquid working medium exiting the condenser; detecting a leak in the event that the sub-cooling determined differs from a setpoint value for the sub-cooling or in the event that a filling quantity of the working medium in the thermodynamic cycle device, being determined from the determined sub-cooling, differs from a setpoint value for the filling quantity. The invention further relates to a corresponding computer program product and to a corresponding device.

Abstract: A waste heat recovery apparatus, for use with an internal combustion engine, includes a working fluid circuit to circulate working fluid, a boiler connected on the working fluid circuit and adapted to recover waste heat from a source to heat working fluid, an expander connected on the working fluid circuit to receive working fluid from the boiler, and a condenser to receive and condense working fluid from the expander. A line carries condensed working fluid from the outlet side of the condenser to a mixer on the outlet side of the expander to lower the enthalpy of the working fluid entering the condenser.

Abstract: A camshaft may include a tube-like outer shaft and an inner shaft arranged coaxially thereto and at least partially rotatable with respect to the outer shaft. The inner shaft may have an end section with a reduced external diameter. The inner shaft may be sealed with respect to the outer shaft at the end section.

Abstract: The present invention provides a camshaft capable of suppressing an increase in the number of parts and the number of places to be processed, preventing scratching on a sliding surface that is a part of an outer peripheral surface of an outer shaft and on which an inner cam is rotated, and preventing occurrence of deformation in the entire camshaft after final assembly. A camshaft includes an inner cam that is attached from a radial direction of an outer shaft and that is fixed to an inner shaft with a pin inserted into the inner cam from the radial direction of the outer shaft in a cam surface of the inner cam.

Abstract: A valve mechanism for an engine includes a camshaft, a rocker arm, a synchronization cam that rotates in synchronism with a valve driving cam, and a switch assembly that switches the driving state of an intake valve or an exhaust valve when a cam follower is pressed by the synchronization cam. The synchronization cam presses the cam follower at a time when the intake valve or the exhaust valve is closed. The switch assembly includes a switch unit that switches the driving state when a switch moves, a driver that drives the switch via a transmission, and a positioner including a spring-biased presser that engages with a concave portion of the transmission. The concave portion includes a first concave portion with which the presser engages in a first driving state, and a second concave portion with which the presser engages in a second driving state.

Abstract: A switch valve for controlling a hydraulic fluid flow of a connecting rod for an internal combustion engine with variable compression with an eccentrical element adjustment arrangement for adjusting an effective connecting rod length, the switch valve including a valve housing including a first operating connection and a second operating connection and a supply connection, wherein at least one filter element is arranged in a portion of the first operating connection or the second operating connection or the supply connection. The switch valve is advantageously used in a connecting rod for an internal combustion engine with variable compression.

Abstract: Air is restrained from flowing into a high pressure chamber while the number of parts is reduced. A plunger is slidably fitted into a body; a reservoir is formed in the plunger with a communication hole formed in a head section thereof to allow communication between an inside and an outside; a high pressure chamber is formed in the body between the body and the plunger bottom section; an oil supply hole is formed in a plunger circumferential wall section; a return spring is interposed between the body and the plunger; a valve mechanism is disposed on the plunger bottom section; the reservoir is set such that a space continuously extends; and the oil supply hole is oriented outward in the radial direction as compared to an axis of the plunger.

Abstract: A camshaft adjusting device, including a vane cell adjuster is provided. The vane cell adjuster includes a stator-that can be connected to a crankshaft of an internal combustion engine, a rotor, which is rotatably supported in the stator and can be connected to a camshaft and has a plurality of working chambers, which are provided between the stator and the rotor and to which a pressure medium can be applied, and a central screw for clamping the rotor to the camshaft by clamping surfaces of the rotor and of the camshaft facing each other. At least one of the clamping surfaces of the rotor and/or of the camshaft is profiled at least in some sections in order to create a form-closed connection.

Abstract: A variable cam phaser system including a variable cam phaser and a vibration damper fixed to the variable cam phaser is disclosed. A method for damping vibration for a variable cam phaser is also disclosed. The method includes providing a variable cam phaser, providing a vibration damper, and fixing the vibration damper to the variable cam phaser.

Abstract: A camshaft adjuster including a stator, a rotor and a pressure medium supply, at least one chamber being formed on the stator, which is divided into two working chambers by at least one vane formed on the rotor or rotatably fixedly connected to the rotor is provided. A pressure medium is applicable to each of the two working chambers via the pressure medium supply in such a way that a pressure of the pressure medium may be increased in each of the working chambers to the extent that the pressure increase results in a rotation of the rotor. A switchable valve is formed in the vane of the rotor, which, in a first switching position of the valve, allows a flow of the pressure medium from a first working chamber through the vane into a second working chamber, in a second switching position the valve hydraulically separating the working chambers from each other.

Abstract: An engine case includes bearings, an oil pump, lubricating oil passages, and a relief device. The bearings rotatably support a crankshaft and a camshaft. The oil pump and the lubricating oil passages are configured to pressure-feed lubricating oil to the bearings. The relief device is configured to adjust a pressure of the lubricating oil. The lubricating oil passages include main lubricating oil passages. The main lubricating oil passages include communication portions linearly formed with extending portions. The communication portions communicate between the respective bearings of the crankshaft and the camshaft from outside the engine case. The extending portions extend from outside the engine case to the bearing of the camshaft. The relief device is disposed having a relief valve and a relief hole at the extending portions.

Abstract: A rocker arm assembly for an engine is configured to fit about a pivot shaft that extends along a central axis. The assembly includes an intermediate shaft configured to be rotatably disposed about the pivot shaft. A cam-side arm is pivotable about the central axis and is configured to be driven by a cam. A valve-side arm is pivotable about the central axis and relative to the cam-side arm, and is configured to convert rotation of the rocker arm assembly about the central axis into operation of an engine valve. An annular compressible fluid chamber is disposed between the intermediate shaft and the valve-side arm. When the cam-side arm and the intermediate shaft are engaged, pivoting of the cam-side arm compresses fluid within the chamber, causing corresponding pivoting of the valve-side arm and operation of the valve. The fluid provides hydraulic lash adjustment.

Abstract: A primary housing carries an air/oil separation element. A valve member extends into a throat of the element. A secondary housing forms a regulator chamber and an atmospheric chamber. A partition of the secondary housing delimits and fluidly seals the atmospheric chamber from the regulator chamber. The partition is moveable in opposite axial directions responsive to a change in a pressure differential between the atmospheric chamber and regulator chamber without the use of a spring. The valve opens into and is in fluid connection with the regulator chamber. The secondary housing is carried by the primary housing. Alternatively, a fluid port can open up out of the secondary housing and the valve not open into the regulator chamber.

Abstract: Provided acoustic devices include an external housing defining an expansion chamber and a wall extending through and partitioning the expansion chamber into a central chamber and a peripheral chamber adjacent the central chamber, wherein an inlet and outlet communicate with the central chamber, and wherein the wall includes a plurality of apertures formed therethrough to allow air movement to and from the central and expansion chambers, the plurality of apertures sized to provide an average flow resistance ranging from 100 MKS Rayls to 5000 MKS Rayls. The acoustic devices advantageously show significant sound attenuation while streamlining air flow to reduce pressure drop across the expansion chamber.

Abstract: An exhaust gas purification filter collects PM contained in and purifies exhaust gas emitted from a gasoline direct injection engine. The exhaust gas purification filter has a honeycomb structural body which has a plurality of cells, partition walls and plug members. Each of the cells is surrounded by the partition walls. An opening section of one end of each of the cells is plugged by a plug member. The plug members satisfies a relationship of L/D?50 and L?3, where L is an average length (mm) of the plug members and D is an average pore size mm of the plug members. The honeycomb structural body and the plug members are made of cordierite. The cordierite contains silica, talc, kaolin, alumina and/or aluminum hydroxide, etc.

Abstract: A system, device and a method for gas treatment is provided. The gas treatment system comprises a generator, one or more corona devices and separation device disposed in sequence along an exhaust gas flow direction. The generator is driven by a gas flow to generate an alternating supplying voltage. The corona devices are electrically connected to the generator to provide the supplying voltage and generate a first electric field via corona discharge by the supplying voltage such that particulates in the gas passing the first electric field are charged. The separation device is electrically connected to the generator and generate a second electric filed via the supplying voltage to separate charged particulates from the exhaust gas flow.

Abstract: In an electrically heated catalyst which is arranged in an exhaust passage, electric leakage is suppressed as much as possible. The electrically heated catalyst comprising: a heat generation element; an electrode; a case; an electrode chamber; and an electrically insulating holding member that is inserted between the outer peripheral surface of the heat generation element and the case, and has an abutment joint portion formed by a pair of end faces which connect from an upstream side end portion to a downstream side end portion of the holding member, and which are arranged in opposition to each other, and an opening portion which is constructed so as to form a predetermined space connected with the electrode chamber in the surrounding of the electrode. The abutment joint portion is arranged in a position which excludes the opening portion, and in which it is not exposed to the electrode chamber.

Abstract: A gaseous emissions treatment assembly has a honeycomb ceramic substrate body with a plurality of cells for passage of exhaust gases. Respective lengths of metal wire are located in a number of the cells. An induction heating coil is mounted adjacent the substrate body for generating a varying electromagnetic field, thereby inductively to heat the lengths of wire and thereby to heat the substrate body.

Abstract: A method and system for modeling growth of reductant deposits for an aftertreatment system on a real time basis using input including exhaust gas temperature, exhaust gas flow rate, and reductant dosing rate. The growth of the reductant deposits are affected by a rate at which reductant accumulates and decomposes from a surface of the aftertreatment system. Thus, the method and system disclosed determines a net reductant deposit growth rate value based on a reductant deposit accumulation rate value and a reductant deposit decomposition rate value. Further, the method and system disclosed determines a reductant mass deposit value based on the net reductant deposit growth rate value. The reductant mass deposit value determined by the method and system may then be used to control a regeneration strategy of the aftertreatment system to eliminate the reductant deposits from the aftertreatment system.

Abstract: An engine device is provided with a first case which removes particulate matters in exhaust gas of an engine, and a second case which removes nitrogen oxides in the exhaust gas of the engine. The second case is connected to the first case via a urea mixing pipe. An exhaust gas inlet surface of the first case is joined to an exhaust gas outlet surface of the engine, and a support base firmly fixed to the engine is provided. The support base is partly brought into surface contact with the exhaust gas outlet surface of the engine.

Abstract: A method is provided for controlling the injection, by a reductant injector in an exhaust system for an internal combustion engine, of reductant for an exhaust aftertreatment unit of the exhaust system, for example a selective catalytic reduction (SCR) unit. The method includes determining a reductant injection debt in dependence on a reductant flow according to at least a first request being higher than a threshold of the reductant flow, and, at least partly in dependence on the reductant injection debt, controlling the reductant injector so as to inject a compensation flow.

Abstract: A catalyst activation method and a catalyst activation device are provided which can activate a NOx catalyst efficiently in an ensured fashion. A plurality of accessories are connected to an internal combustion engine, and a control mechanism is provided on each of the accessories for controlling a load to be exerted on the internal combustion engine by driving the corresponding accessory. Then, a temperature of a NOx catalyst is acquired, and when the acquired temperature of the NOx catalyst is lower than a catalyst activation temperature, in order to drive additionally a certain number of accessories in the plurality of accessories which correspond to the temperature difference, the controlling mechanism(s) which corresponds to the accessory(ies) to be driven additionally is controlled to drive the corresponding accessory(ies) so as to increase a load to be exerted on the internal combustion engine.

Abstract: A method of controlling regeneration of a selective catalytic reduction (SCR) on a diesel particulate filter (DPF) (SDPF) by using an increase in a temperature of exhaust gas of a vehicle include confirming whether the vehicle is in an idle state or whether the vehicle enters a re-start after a start-stop before the regeneration of the SDPF and determining an entrance condition, determining, when the entrance condition is satisfied, a quantity of urea injection and a quantity of urea accumulated before the regeneration and determining whether the determined quantity of urea injection does not exceed a target quantity of urea, and increasing a temperature within a filter of the SDPF to a predetermined value or more during the regeneration of the SDPF and removing urea deposited at the lower end portion of the filter.

Abstract: The exhaust gas stirring device comprises a cylindrical frame on an inner surface of a flow path member forming an exhaust flow path; supporting parts arranged to radially reach across the frame; a shielding part shielding a central axis of the frame and its circumference in the axis direction of the frame. One of the supporting parts comprises a pair of first skeletons extending radially outwardly from the central axis of the frame. The frame and the supporting parts are configured by assembling assembling members. One of the assembling members comprises the pair of first skeletons, and second skeletons respectively extending in an arc shape from one end of each of the first skeletons and constituting a part of the frame. Each of the first skeletons and the second skeletons in the assembling members comprises a vane part formed to protrude respectively from each of the first and second skeletons.

Abstract: Heating device (10), in particular for heating an operating fluid tank of a motor vehicle, preferably a tank for storage of aqueous urea solution, the heating device (10) comprising an electrical resistance heating trace (14) with a heating side (14b), on which, in intended operation, heat is emitted to a fluid to be heated, and the heating side (14b) opposing a carrier side (14a), on which the resistance heating trace (14) faces a mounting supporting it, wherein the resistance heating trace (14) is disposed between a flexible film (16) on its heating side (14b) and a substrate (12), rigid in comparison with the flexible film (16), as the supporting mounting on the carrier side (14a), which is characterized in that the resistance heating trace (14a) is connected to the rigid substrate (12) on the carrier side (14a) without intermediate arrangement of a further film.

Abstract: A control apparatus for an internal combustion engine includes an electronic control unit. The electronic control unit is configured to: execute increasing a temperature of an exhaust gas control apparatus at a second temperature increase speed as a regeneration control when the temperature of the exhaust gas control apparatus is in a second temperature range; control the temperature of an exhaust gas control apparatus during an idle operation so as to be equal to or smaller than the temperature of the exhaust gas control apparatus when the internal combustion engine enters an idle operation state as a temperature increase suppression control when the temperature of the exhaust gas control apparatus during a regeneration control is in the second temperature range and the internal combustion engine is in the idle operation state.

Abstract: A method for cold start emissions diagnostic of a catalytic treatment device of an internal combustion engine includes determining a torque reserve; determining a catalyst light off (CLO) state; integrating the total torque reserve over a time period established by the CLO state; determining if a value from the integration exceeds an integration threshold; and if the value from the integration exceeds the integration threshold, indicating that the cold start emissions diagnostic is positive.

Abstract: In a method of operating a drive device, a probe temperature of an exhaust gas exhaust gas probe in an exhaust tract is measured, as the exhaust gas probe is heated by a probe heater. A temperature growth value representative of an increase in temperature of the exhaust gas probe is determined during heating of the exhaust gas probe, and the presence of a defect of the probe heater is recognized, when the temperature growth value deviates from an input value.

Abstract: A method of diagnosing deterioration of an exhaust emission control catalyst is provided. The catalyst includes an HC (hydrocarbon) adsorbing part and an oxidation catalyst part. The method includes estimating that an HC discharge amount discharged from the HC adsorbing part is larger than a first value, detecting a parameter relating to a reaction heat of the exhaust emission control catalyst, and diagnosing that the exhaust emission control catalyst is deteriorated when the detected parameter indicates a temperature value lower than a predetermined threshold. The deterioration diagnosis is performed under a first condition that the HC discharge amount is estimated to be larger than the first value.

Abstract: A particulate matter sensor detecting particulate matter in exhaust emissions is provided, which is resistant to having sensor surfaces buried by particulate matter residue. Detection electrodes are provided, with alternating polarity, laminated in a laminating direction, separated by insulation. Of the detection electrodes, first detection electrodes of one polarity and second detection electrodes of the other polarity are exposed perpendicular to the laminating direction. In the direction perpendicular to the laminating direction, the particulate matter sensor has target accumulating parts on which the particulate matter is accumulated. In the target accumulating parts, the thickness W1 of the first detection electrodes in the laminating direction is greater than the thickness W2 of the second detection electrodes in the laminating direction.

Abstract: A device for convective cooling of a functional assembly for a motor vehicle includes a fan, which in operation, is designed to move air along a flow axis defined by the design and placement of the fan. A flapper valve device is provided having an air transit opening and a flapper valve assembly disposed therein, with at least one flapper valve provided to change the open-flow cross section of the air transit opening and being adjustable between a closed position and an open position. A control unit is provided. The fan and the flapper valve device are arranged at a distance from each other such that air moved due to operation of the fan then flows through the air transit opening at least when the flapper valve device is in the open position. The control unit is designed to detect at least one operating parameter of the fan.

Abstract: Methods of operation of liquid and gaseous multi-fuel compression ignition engines that may be operated on a gaseous fuel or a liquid fuel, or a combination of both a gaseous fuel and a liquid fuel at the same time and in some embodiments, in the same combustion event. Various embodiments are disclosed.

Abstract: A cooling system includes a charge air cooler system that includes a first stage that receives charge air via a charge air flow path and receives coolant fluid via a first coolant fluid flow path. A second stage receives charge air from the first stage via the charge air flow path, outputs the charge air, and receives the coolant fluid via a second coolant fluid flow path. A third stage receives and outputs the charge air from the second stage via the charge air flow path and receives the coolant fluid via a third coolant fluid flow path. The cooling system includes a low temperature radiator system that includes a low temperature radiator that directs the coolant fluid toward the third stage via the third coolant fluid flow path and includes a high temperature radiator system that directs the coolant fluid toward the first stage and second stage.

Abstract: Out of connection passages connecting the engine cooling circuit and the intercooler cooling circuit, a coolant inflow passage is connected between downstream of a mechanical pump and also upstream of a main radiator of the engine cooling circuit, and downstream of a sub radiator and also upstream of an electric pump of the intercooler cooling circuit, and a coolant outflow passage is connected between downstream of the electric pump and also upstream of the sub radiator of the intercooler cooling circuit, and downstream of the mechanical pump and also upstream of the main radiator of the engine cooling circuit. An inter-cooling circuit valve is provided in the coolant inflow passage.

Abstract: In an upstream portion from a valve connecting surface that is formed in an opening of an intake port to a combustion chamber, an upper wall surface of the intake port continues from an upstream side end of the valve connecting surface and extends substantially straight and diagonally with respect to a ceiling surface on the intake port side. In addition, a cross-sectional shape of the portion in the intake port in a direction perpendicular to an axial direction of the intake port is a flat shape with an axis in a transverse direction being a long axis.

Abstract: A turbocharger includes: a shaft provided with a small-diameter portion, and two large-diameter portions formed on two sides of the small-diameter portion; and a semi-floating bearing to rotatably support the shaft. The semi-floating bearing includes a cylindrical body into which the shaft is inserted. An inner peripheral surface of the body includes: two bearing surfaces opposed to the large-diameter portions of the shaft; a non-bearing surface located between the two bearing surfaces, having a larger inner diameter than inner diameters of the bearing surfaces; and an oil passage opened to the non-bearing surface to supply lubricant oil to a gap in a radial direction between the non-bearing surface and the shaft. At least one of the two bearing surfaces extends more in an approaching direction of the two bearing surfaces than does the large-diameter portion opposed in the radial direction to the one bearing surface.

Abstract: A two-stroke internal combustion engine achieves high performance levels by using an innovatively timed sequence of injecting and igniting fuel and oxidant. The operating cycle of the engine does not utilize a compression process. This permits the injection of fuel and oxidant to be coordinated with the initiation of the combustion process in such a way that the engine achieves high efficiency and provides high torque, while at the same time producing low thermal loading of engine components and low levels of engine noise and vibration.

Abstract: An engine control apparatus controls includes a cleaning mode to clean a deposit generated in an intake system of an engine. The engine control apparatus includes a generation source calculator, a deposit calculator, and a mode controller. The generation source calculator is configured to calculate an attached generation source amount on the basis of a temperature of the intake system. The attached generation source amount is an amount of a generation source, of the deposit, attached to the intake system. The deposit calculator is configured to calculate an attached deposit amount that is an amount of the deposit attached to the intake system, on the basis of the attached generation source amount and the temperature of the intake system. The mode controller is configured to execute the cleaning mode, when the attached deposit amount is greater than an execution threshold.

Abstract: Disclosed is a turbocharged dual-fuel engine, including a first driving system, a second driving system, a third driving system and a fourth driving system. The first driving system, the second driving system, the third driving system and the fourth driving system have the same structure. The first driving system includes a cylinder body in a gas compression device, a gas delivery pipe, a one-dimensional internal combustion engine, a tenth motor, an axial-flow gas compressor and a first lever braking device in a natural gas storage device. The tenth motor is connected with the axial-flow gas compressor. The axial-flow gas compressor is driven by the tenth motor.

Abstract: The present disclosure relates generally to a nosecap for a gas turbine engine. The nosecap may be injection molded in an embodiment. The nosecap may have bolt holes surrounded by bolt pockets that are asymmetric about a plane passing through a geometric center of the nosecap and passing through and dividing the bolt hole in an embodiment.

Abstract: A radial diffuser and method for manufacturing a radial diffuser is provided, where the diffuser includes a vane positioned between a hub and a case. The hub includes a surface. The vane projects from the surface of the hub and is wedge-shaped. The vane includes a leading end extending toward a radial inner edge of the hub, a trailing end extending toward a radial outer edge of the hub, an upper surface, first and second sides extending longitudinally along the vane, and a middle region disposed between the hub and the upper surface. The vane at the upper surface has a thickness defined by a first wedge angle at the upper surface. The vane at the middle region has a thickness defined by a second wedge angle at the middle region. The second wedge angle is smaller than the first wedge angle.

Abstract: Systems and methods of coupling a nose cone to a turbine machine. Nose cone assembly weight and coupling difficulty are each reduced by eliminating the number of bolts used to mount the nose cone to the turbine machine, as well as the support or retaining ring. The disclosed nose cone comprises a plurality of hub mounting elements including one or more flexible spring flanges, one or more bayonet flanges, and one or more pilot flanges, each configured to engage a respective portion of the turbine machine.

Abstract: A method of filtering air entering the intake opening of a gas turbine engine. A straightening tube provides a straight channel for incoming air flow. A flow redirector provides a path for air flow that is at right angles to the channel provided by the straightening tube and that leads to the intake opening of the engine. A filter at the downstream end of the flow redirector has a pair of rollers for unrolling and re-rolling a roll of adhesive tape, with an exposed section of the adhesive tape blocking the downstream end of the flow redirector and capturing particles in the air flow. The rollers are activated as needed to expose fresh sections of tape.

Abstract: A gas turbine is provided including a rotor which includes a rotor portion of a fluid bearing for rotatably supporting the rotor, a radially outer stator portion, a radially inner stator portion including a stator portion of the fluid bearing, a compressor air passage extending between the radially outer stator portion and the radially inner stator portion, and an annular gap between the rotor and the radially inner stator portion partially forming an annular air passage in communication with the compressor air passage, wherein along a flow direction of air flowing within the annular air passage a radius of the air passage decreases in a first portion and then increases in a second portion. Further a method for operating a gas turbine is described.

Abstract: The present disclosure provides systems and methods related to thermal management systems for gas turbine engines. For example, a thermal management system comprises a thermally neutral heat transfer fluid circuit, a first heat exchanger disposed on the fluid circuit, and a second heat exchanger disposed on the fluid circuit.

Abstract: A jet pump type ejector for a turbomachine, including a duct through which a secondary ventilation air flow passes, and a first end of which forms an air intake and a second end of which forms an air outlet, the two nozzles for spraying a primary air flow being mounted in the duct which defines a mixer and a diffuser downstream from the nozzle, the two nozzles being parallel and adjacent to one another, the mixer including two substantially planar longitudinal walls, bottom and top respectively, connected to one another by two side walls having a semicircular cross-section, in which the radius of curvature R2 is centered on the axis of a nozzle, the center-to-center distance of the nozzles being substantially equal to ?/2 times R2 or (?/2)R2.

Abstract: A gas turbine equipped with a compressor, a combustion chamber and a turbine is further equipped with: a pressurizing device for taking a portion of the compressed air compressed by the compressor, and pressurizing the compressed air; a combustion chamber cooling line for cooling the combustion chamber using the pressurized compressed air; a temperature regulating line for regulating the temperature of a stationary member of a blade ring or the like of a turbine by using the pressurized compressed air; a combustion chamber supply line through which the compressed air flows from the pressurizing device to the combustion chamber cooling line; a turbine supply line through which the compressed air flows from the pressurizing device to the temperature regulating line; a heater for heating the compressed air, provided in the turbine supply line; and a control device capable of controlling the heater.

Abstract: A gas turbine combustor comprising a plurality of cooling air passages (27A) through which bled pressurized air flows from downstream of a combustion gas flow toward upstream, the plurality of cooling air passages (27A) being disposed in a wall portion (26) side by side and aligned in a flow direction of a combustion gas; wherein the plurality of cooling air passages (27A) are divided via a passage transition groove portion (33) into upstream cooling air passages (27A1) disposed closer to bled pressurized air inlet holes (30a) and downstream cooling air passages (27A2) disposed closer to bled pressurized air outlet holes (30b), and center lines (C1) of the upstream cooling air passages are non-collinear with center lines (C2) of the downstream cooling air passages.

Abstract: A windage shield system is provided. The system includes an annular cavity having an inlet end and an outlet end. The annular cavity is configured to direct a flow of cooling fluid from the inlet end to the outlet end. The system also includes a source of a flow of cooling fluid coupled in flow communication with the annular cavity. The annular cavity is bounded by a stationary component and a rotating component, and the rotating component introduces heat into the annular cavity by windage effects. The system also includes a cooling channel coupled in flow communication with the outlet end, and a first windage shield extending from the outlet end towards the inlet end within the annular cavity.

Abstract: A water feeding system provided with: a first feed water line through which first feed water flows; a second feed water line through which second feed water having a lower pressure than the first feed water flows; a first heater that heats the first feed water; a first feed water introducing line that guides first heated feed water, which is the first feed water that has been heated by the first heater, to the second feed water line; a medium heat exchanger that causes the first heated feed water to exchange heat with a medium, thereby cooling the first heated feed water and heating the medium; and a cooling water injecting line that injects cooling water having a lower temperature than the first heated feed water into the first feed water introducing line, at a position located further to the second feed water line side than the medium heat exchanger.