Abstract: A cooling system integrated into a stator assembly of a gas turbine engine has an on-board injector or cooling nozzle located for cooling of a rotor assembly. The nozzle may be generally annular and may contain a plurality of pivoting airfoils circumferentially spaced from one-another for directing cooling air flow from the nozzle and generally toward a plurality of holes in a cover of the rotor assembly. The pivoting airfoils are adapted to move between a spoiled state where the mass flow of cooling air is reduced, and to an optimal state where the mass flow is increased. The system may further include a plurality of fixed airfoils in the nozzle with adjacent fixed airfoils defining a discharge orifice in the nozzle. Each one of the plurality of pivoting airfoils may be located in a respective discharge orifice.

Abstract: A brush seal system for sealing a clearance between components of a turbo engine that are movable in relation to one another, in particular of a thermal gas turbine, is disclosed. The brush seal system includes a brush seal housing, which accommodates at least one brush head of a brush seal, where the brush seal housing includes a first component having a cover plate section and a second component having a support plate section. The first component includes an axial flange forming a fish mouth seal on an end opposite the cover plate section. A thermal gas turbine having such a brush seal system is also disclosed.

Abstract: The present disclosure relates to a turbomachine that includes a first component and a second component coupled to another and a seal assembly between the two components. The seal assembly may include a first intersegment seal, a second intersegment seal, and a rope seal that are configured to block a flow of gas between the two components.

Abstract: Aspects of the disclosure are directed to a seal comprising: a shoe, and at least one beam coupled to the shoe, wherein the seal includes a single crystal material with a predetermined crystalline orientation. Aspects of the disclosure are directed to a method for designing a seal, comprising: obtaining a requirement associated with at least one of: a geometrical profile of the seal, a temperature range over which the seal is to operate, a natural frequency associated with the seal, or a range of deflection associated with the seal, selecting a crystalline orientation for a single crystal material of the seal based on the requirement, and fabricating the seal based on the selected crystalline orientation.

Abstract: A turbine shroud for a gas turbine engine includes an annular metallic carrier, a blade track, and a cross-key connection formed between the annular metallic carrier and the ceramic blade track. The cross-key connection is formed between the annular metallic carrier and inserts included in the blade track. The inserts are bonded to an annular runner also included in the blade track by a braze layer.

Abstract: A turbine shroud adapted for use in a gas turbine engine includes a plurality of metallic carrier segments and a plurality of blade track segments mounted to corresponding metallic carrier segments. Cooling air is directed onto the blade track segments to cool the blade track segments when exposed to high temperatures in a gas turbine engine.

Abstract: One embodiment of the present invention is a unique vehicle. Another embodiment is a unique propulsion system. Yet another embodiment is a unique system. Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for vehicle propulsions systems. Further embodiments, forms, features, aspects, benefits, and advantages of the present application will become apparent from the description and figures provided herewith.

Abstract: The disclosure relates generally to recession resistant gas turbine engine articles that comprise a silicon containing substrate, and related coatings and methods. The present disclosure is directed, inter alia, to an engine article comprising a silicon substrate which is coated with a chemically stable porous oxide layer. The present disclosure also relates to articles comprising a substrate and a bond coat on top comprising a two phase layer of interconnected silicon and interconnected oxide, followed by a layer of silicon. The present disclosure further relates to a recession resistant article comprising an oxide in a silicon containing substrate, such that components of the silicon containing substrate is interconnected with oxides dispersed in the substrate and form the bulk of the recession resistant silicon containing article.

Abstract: Environmental barrier coatings for high temperature ceramic components including a bond coat layer; an optional silica layer; and at least one transition layer including: from about 85% to about 100% by volume of the transition layer of a primary transition material including a rare earth disilicate, or a doped rare earth disilicate; and from 0% to about 15% by volume of the transition layer of a secondary material selected from Fe2O3, iron silicates, rare earth iron oxides, Al2O3, mullite, rare earth aluminates, rare earth aluminosilicates, TiO2, rare earth titanates, Ga2O3, rare earth gallates, NiO, nickel silicates, rare earth nickel oxides, Lnb metals, Lnb2O3, Lnb2Si2O7, Lnb2SiO5, borosilicate glass, alkaline earth silicates, alkaline earth rare earth oxides, alkaline earth rare earth silicates, and mixtures thereof; where the transition layer is applied to the component as a slurry including at least an organic solvent, the primary transition material and at least one slurry sintering aid, and where a re

Abstract: The present invention provides a high quality material for ring rolling. The material includes radially outer and inner peripheral surfaces. In the material, a center of gravity on a half section is located so as to be closer to the outer peripheral surface in contact with a main roll than a center of the half section in a thickness direction, a shape of the half section includes a height reducing portion having a height from a center line dividing the half section into halves in a height direction, this height is gradually reduced toward the inner peripheral surface in contact with a mandrel roll, and the shape is formed in a substantially linear symmetry such that the center line is a symmetric axis. A height of the inner peripheral surface is from 20% to 50% of a maximum height of the material.

Abstract: A vane assembly for a gas turbine engine is disclosed in this paper. The vane assembly includes an inner platform, an outer platform, and a ceramic-containing airfoil. The ceramic-containing airfoil extends from the inner platform to the outer platform. A reinforcement spar made from a metallic material extends from the inner platform to the outer platform through a hollow core of the ceramic-containing airfoil.

Abstract: A conduction riser additively manufactured onto thin metal parts, the conduction riser extending in a build direction of the thin metal part and traversing the thin metal part as the conduction riser extends in the build direction. The conduction riser transferring heat from the upper layers of additively manufactured part during manufacturing, preventing thermal deflection of the part.

Abstract: Assemblies are provided for rotational equipment. One of these assemblies includes a bladed rotor assembly, a stator vane assembly, a fixed stator structure and a seal assembly. The bladed rotor assembly includes a rotor disk structure. The stator vane assembly is disposed adjacent the bladed rotor assembly. The fixed stator structure is connected to and radially within the stator vane assembly. The seal assembly is configured for sealing a gap between the stator structure and the rotor disk structure, wherein the seal assembly includes a non-contact seal.

Abstract: A method of remanufacturing a liner panel for a gas turbine engine includes removing a bushing from a damaged component; and molding the bushing with a material charge. A liner panel for a gas turbine engine includes a forward fan exit case liner panel with a donor bushing from a damaged forward fan exit case liner panel. A liner panel for a gas turbine engine includes a forward fan exit case liner panel molded from a material charge that includes a multiple of layers. At least one of the multiple of layer includes a discontinuity.

Abstract: A turbine housing for a turbocharger is provided. The turbine housing includes an exterior housing and an interior housing as well as a bearing flange. The exterior housing is connected to the bearing flange. The interior housing includes a flange socket on which the bearing flange is positioned. A fastening ring is inserted inside in the bearing flange and connected to the flange socket, with the bearing flange being fixed in the axial direction (AR) by the fastening ring.

Abstract: The present disclosure is directed to a retention assembly for a stationary gas turbine component. The retention assembly includes a first stationary gas turbine wall having a first surface. A retention boss extends outwardly from the first surface. The retention assembly includes a second stationary gas turbine wall having a second surface. A retainer is positioned between the first and the second surfaces. The retainer includes a base wall positioned adjacent to the retention boss. A first sidewall extends outwardly from the base wall, and a second sidewall extends outwardly from the base wall. A first arm extends outwardly from the first sidewall, and a second arm extends outwardly from the second sidewall. Each of the first arm and the second arm includes a plurality of convolutions. At least one of the plurality of convolutions is in contact with the second surface.

Abstract: A system includes a steam turbine. The steam turbine includes an outer casing and an inner casing disposed within the outer casing. The inner casing is horizontally split in an axial direction into an upper inner casing portion and a lower inner casing portion. The steam turbine also includes an impulse stage disposed within the inner casing, wherein the inner casing is configured to provide full arc admission of a fluid to the impulse stage. The steam turbine further includes at least one reaction stage having multiple blades. The at least one reaction stage is integrated within the inner casing.

Abstract: Methods and systems are provided for heating an engine and generating energy from a common waste heat recovery system. In one example, a method comprises, responsive to a first condition, expanding a working fluid of a waste heat recovery system via an expander to generate electricity, and responsive to a second condition, compressing the working fluid of the waste heat recovery system via the expander to transfer heat to an engine.

Abstract: A method and system of processing animal waste is disclosed. In a particular embodiment, the method includes transferring animal waste to a gasifier to burn the animal waste, circulating water through a heat exchanger in a flue stack of the gasifier to generate heated water, and pumping the heated water to either an organic Rankine cycle system to generate electricity, a radiant heater, or any combination thereof. In addition, the method includes circulating the heated water through an evaporator of the organic Rankine cycle system to vaporize a refrigerant, and circulating the vaporized refrigerant from the evaporator, through a turbine to generate the electricity. Also, the method includes using a manure spreader to feed the animal waste to the gasifier at a varying feed rate that is based on contemporaneously calculating a British thermal units (BTU) of the animal waste being fed to the gasifier.

Abstract: A method of manufacturing a lash adjuster body for use in a lash adjuster assembly can include forming a lash adjuster body to an as-formed condition including an outer cylindrical surface and an inner cylindrical surface. The inner cylindrical surface can have a leak down portion and a blind bore. The method can also include imparting a wear resistant surface layer to at least the leak down portion of the inner cylindrical surface with a sub-critical temperature process. The method can also include preserving the leak down portion in the as-formed condition during imparting of the wear resistant surface layer.

Abstract: A switchable rocker arm is provided having first and second arms. The first arm has a first outer end and a first inner end and the second arm has a second outer end a second inner end, with the first and second outer ends contacting a respective one of a cam or a valve. One of the first and second inner ends includes an opening with a ring gear and the other includes at least one support for a planet gear that engages the ring gear. A sun gear is located on a rocker shaft and engages the planet gear. A locking mechanism is switchable from a locked position, in which the sun gear is rotationally fixed to the rocker shaft to transfer a cam lift to the valve via the gear ratio provided in the sun, planet, and ring gear arrangement, and a release position, in which the sun gear is rotatable on the rocker shaft so no cam lift is transferred.

Abstract: A valve bridge is disclosed for use with an internal combustion engine. The valve bridge may include a body with a central cavity formed in a center portion of the body for receiving a hydraulic lash adjuster, and opposing first and second lateral extensions on opposite sides of the central cavity. The valve bridge may further include a first bore in the first extension for receiving a first valve stem, and a second bore in the second extension for receiving a second valve stem. The valve bridge may also include a first internal groove in a wall of the central cavity configured to receive fluid, as well as a first internal passage in the body that extends from the first internal groove toward the first bore. In addition, the first internal passage may extend from a higher gravitational point within the body to a lower gravitational point within the body.

Abstract: A camshaft adjuster (1) is provided for an internal combustion engine of the vane cell type, having a stator (2) and a rotor (3) which can be rotated relative to the stator (2) and consists of a plurality of rotor parts (4, 5, 6) which are connected to one another, wherein the rotor (3) can be connected fixedly to a camshaft (7) of the internal combustion engine so as to rotate with it, and a first rotor part (4) is configured in such a way that the camshaft (7) is supported with contact on the first rotor Part (4) in an operating state, wherein the first rotor part (4) is produced by a sintering process, and at least one first supporting surface (9), supporting the camshaft (7), of the first rotor part (4) is set geometrically by a chipless machining operation, and to a method for producing a rotor (3) for a camshaft adjuster (1) of this type.

Abstract: A camshaft adjuster including a drive element, a first output element and a second output element all having a plurality of vanes; the two output elements can be braced relative to one another in the peripheral direction using an expanding spring located between the output elements; only the first output element is designed in such a way as to be connectable to a camshaft; a locking mechanism can lock the two output elements together and unlock same such that the two output elements are jointly or separately rotatable relative to the drive element; a vane of the second output element is in contact with a vane of the drive element, and the expanding spring puts a vane of the first output element at a distance from the vane of the drive element, so the first output element is in an angular position relative to the drive element which lies within the angle adjustment range between the first output element and the drive element.

Abstract: A valve device for a hydraulic circuit includes an actuator unit and a valve unit. The actuator unit comprises an electromagnetic circuit comprising an armature which moves in a translational manner, a core, a coil carrier, a coil configured to be energized, and a flux guiding device. The coil is arranged on the coil carrier. The valve unit comprises a valve housing comprising a transverse bore which serves as a first control chamber pressure port, a regulating slide mounted in the valve housing, the regulating slide being configured to move axially, a first outlet port, an inlet port, and a second control chamber pressure port arranged between the inlet port and the first outlet port.

Abstract: A pump housing has a main oil passage, a return oil passage provided substantially in parallel with the main oil passage, and a valve insertion hole extending across the main oil passage such that a closed fore end of the valve insertion hole reaches in the vicinity of the return oil passage. The valve insertion hole has a female screw formed at an open end thereof, and a through-hole is formed in the pump housing, having one end connected to the valve insertion hole at a portion adjacent to the closed fore end thereof and an opposite end opened to the outside of the pump housing. With the valve insertion hole thus provided, a temperature sensitive valve mechanism can be readily inserted in the valve insertion hole at any time.

Abstract: A blow-by heater includes a metal pipe for flowing a blow-by gas therethrough. The metal pipe includes a flat portion on one side along an axis direction and a curved portion on a side opposite to the flat portion and is formed of a metal plate with a joining portion abutting against each other at edges of the metal plate at the curved portion. The blow-by gas heater further includes a resin molded over the metal pipe, and a heating source provided inside resin and directly contacting the flat portion.

Abstract: An oil-gas separator assembly is provided, which includes a rotating separating section and a stationary filtering section. The rotating separating section includes: a rotating member provided with a through hole for an oil-gas mixture passing through; a rotating skeleton fixedly arranged at an outer side of the rotating member, wherein a rotating filter element is provided in the rotating skeleton for being rotated along with the rotating skeleton; a connecting pipe fixedly connected to an inner side of the rotating member; and a rotating impeller fixedly connected to the rotating member and located in the connecting pipe, wherein the rotating impeller is used for suctioning the oil-gas mixture into the oil-gas separator assembly. The stationary filtering section includes: a housing fitted with the connecting pipe; a stationary skeleton; and a vent hole provided on the housing, and an oil discharging hole provided at the bottom of the housing.

Abstract: A honeycomb structure includes honeycomb segments each having a porous partition wall defining a plurality of cells, and includes a porous bonding layer containing a crystalline anisotropic ceramic and disposed so as to bond side surfaces of the honeycomb segments to each other. A ratio of a pore volume (cc/g) of a fine pore defined as a pore in the bonding layer having a pore diameter of 10 ?m or more and less than 50 ?m with respect to a pore volume (cc/g) of a coarse pore defined as a pore in the bonding layer having a pore diameter of 50 ?m or more and 300 ?m or less is from 2.0 to 3.5, the pore volume of the fine pore is from 0.15 to 0.4 cc/g, and the pore volume of the coarse pore is from 0.05 to 0.25 cc/g.

Abstract: A method for controlling an externally excited electric machine to boost regeneration of a NOx storage catalyst which is part of an assembly made up of an internal combustion engine, the externally excited electric machine which is connected to the internal combustion engine in a manner allowing the transmission of torque and which has a rotor including a rotor winding and a stator, and the NOx storage catalyst which is disposed in an exhaust-system branch downstream of the internal combustion engine, the rotor winding of the electric machine being energized with a preexcitation current as a function of an operating state of the NOx storage catalyst.

Abstract: A reductant delivery system is provided for delivery of reductant to an engine exhaust aftertreatment system that is heated during cold temperature conditions. A heat exchange fluid flows through a heat exchange circuit that provides a flow path from the heat source to the doser, from the doser to the reductant storage tank, and from the reductant storage tank to the heat source. A control valve controls the flow of the heat exchange fluid in the heat exchange circuit so that at least one heat exchange cycle includes a circulation period that increases the temperature of the reductant in the doser and storage tank and a termination period where circulation is stopped until reductant temperature in the doser reaches a lower limit.

Abstract: The disclosure relates to a multi-chamber container made of thermoplastic plastic as a service-fluid container for a motor vehicle, which multi-chamber container comprises at least two chambers, which constitute separated volumes that are not in fluid connection with each other, at least not directly, and which are each designed to hold a different service fluid, wherein at least two surrounding walls of the chambers adjoin each other, the chambers are components of a continuous container body combination, the surrounding walls of at least two chambers that adjoin each other are connected to each other in a bonded manner by means of at least one material bridge or in a form-closed manner and/or by means of fasteners, and the connection is designed to independently release under the influence of deformation forces caused by impact such that the container body combination is divided into at least two separate container body parts or two container bodies under the influence of deformation forces caused by impact

Abstract: A purification controller 12 is configured to estimate the amount of ammonia occluded (i.e. ammonia occlusion amount) in an SCR catalyst 4, which is arranged in an exhaust pipe 52 of a diesel engine 51 so as to purify NOx in an exhaust gas of the diesel engine 51. More specifically, the purification controller 12 acquires upstream NO concentration data, upstream NO2 concentration data, downstream NOx concentration data, downstream NO2 concentration data and downstream ammonia concentration data. The purification controller 12 further acquires an urea injection amount. Then, the purification controller 12 estimates the ammonia occlusion amount based on the acquired upstream NO concentration data, upstream NO2 concentration data, downstream NOx concentration data, downstream NO2 concentration data and downstream ammonia concentration data, the acquired urea injection amount and reaction formulas for reduction of NOx with the SCR catalyst 4.

Abstract: A multi-gas sensor controller 9 is provided in an urea SCR system 1 with an SCR catalyst 4, an aqueous urea injector 5 and a multi-gas sensor 8 (ammonia sensor unit and NOx sensor unit). The multi-gas sensor controller 9 determines the concentration of ammonia in exhaust gas flowing out of the SCR catalyst 4, as a downstream ammonia concentration value, based on a detection result of the ammonia detection unit. The multi-gas sensor controller 9 controls the aqueous urea injector 5 to supply urea to the SCR catalyst 4 in a fuel-cut state. Further, the multi-gas sensor controller 9 correct the determined downstream ammonia concentration value based on a detection result of the NOx detection unit and an oxygen concentration of the exhaust gas after the supply of urea to the SCR catalyst with the control of the aqueous urea injector 5 by the controller 9.

Abstract: According to a device and a method for controlling an internal combustion engine, a control device (38) enables controllability of the internal combustion engine to be improved by preventing surging from occurring upon starting or stopping of the internal combustion engine, by opening a relief valve (28) as a turbine rotational speed reaches a surging rotational speed when the control device (38) causes a motor generator (32) to assist in rotation of the turbocharger (12) upon starting of a diesel engine body (11).

Abstract: A system for diagnosing a sensor of an exhaust aftertreatment system may include receiving a first tank level value from a sensor. A plurality of reductant dosing command values over a period of time are received. A dosed reductant value is determined responsive to the plurality of reductant dosing command values reaching a threshold integrated value. A second tank level value is received from the sensor responsive to the dosed reductant value reaching the threshold integrated value. A sensor-estimated dosing value is determined based on the difference between the first tank level value and the second tank level value. The sensor may be diagnosed as performing outside of an acceptable calibration range based on the difference between the sensor-estimated dosing value and the dosed reductant value.

Abstract: A method and device for monitoring the formation of nitrogen dioxide at an oxidation catalytic converter is disclosed. The conversion of the nitrogen oxides, corresponding to a first exhaust gas volume flowrate through the oxidation catalytic converter, is detected. The exhaust gas volume flowrate is then changed and the conversion of the nitrogen oxides which changes with the change in the exhaust gas volume flowrate is also detected. By reference to the respective conversion of the nitrogen oxides at the different exhaust gas flowrates through the oxidation catalytic converter, it is concluded, on the basis of a predetermined relationship between the conversion of the nitrogen oxides and a proportion of nitrogen dioxide in the nitrogen oxides in the exhaust gas, that nitrogen dioxide is being formed at the oxidation catalytic converter.

Abstract: A cooling structure (1) for a cylinder head (2) of an internal combustion engine includes a lower first cooling jacket (12) adjacent to a fire deck (13) and an upper second cooling jacket (14) adjacent to an intermediate deck (15), the first and second cooling jackets (12, 14) being flow connected by at least one transfer opening (27, 31) of the intermediate deck (15), the first cooling jacket (3) including at least one center cooling chamber (17) and an outer cooling chamber arrangement with at least one first outer cooling chamber (16), the outer cooling chamber (16) and the center cooling chamber (17) being flow connected by at least one exhaust side first radial passage (19) extending in a region of the exhaust valve bridge (8) and by at least one second radial passage (20, 21), the first radial passage (19) and the second radial passage (20, 21) being streamed hydraulically in parallel.

Abstract: There is provided a saddle-ridden type vehicle including an engine, a water pump, and a radiator. A cooling water flow control unit switches a first circulation path without flowing in the radiator, and a second circulation path through the radiator, in accordance with a temperature of cooling water. The cooling water flow control unit includes a thermostat and a thermostat housing. The thermostat housing is formed with a first passage, a second passage disposed adjacent to the first passage, and a bypass passage communicating the first passage and the second passage. The thermostat switches communication and cutoff of the second passage at a part of the second passage, which is positioned upstream of a connection part between the second passage and the bypass passage, in accordance with the temperature of the cooling water.

Abstract: A coolant control valve for an internal combustion engine, including: a housing; a first rotary valve disposed within the housing, the first rotary valve including an axis of rotation and an end stop; and a resilient element connected to the housing. In a first circumferential position for the rotary valve, a first circle, centered on the axis of rotation, passes through the resilient element and the end stop.

Abstract: A four-stroke reciprocating piston internal combustion engine is disclosed. The engine includes an even number of cylinders grouped into a first half and a second half. An exhaust gas turbocharger has a first turbine inlet and a second turbine inlet. Each of the cylinders has an intake duct with an intake opening, a first exhaust duct with a first exhaust opening, and a second exhaust duct with a second exhaust opening. The first half of cylinders is connected via the respective first exhaust ducts to the first turbine inlet and is connected via the second exhaust ducts to the second turbine inlet. The second half of cylinders is connected via the respective first exhaust ducts to the second turbine inlet and is connected via the respective second exhaust ducts to the first turbine inlet. The respective second exhaust openings have a larger diameter than the respective first exhaust openings.

Abstract: An internal combustion engine includes: plural cylinders, a first exhaust gas turbocharger having a high-pressure turbine and a high-pressure compressor, a second exhaust gas turbocharger having a low-pressure turbine and a low-pressure compressor, and an SCR catalytic converter positioned between the high-pressure turbine and the low-pressure turbine, via which exhaust gas leaving the high-pressure turbine is conducted upstream of the low-pressure turbine. The low-pressure compressor is assigned a power take-in, via which the low-pressure compressor can be driven when as a consequence of a relatively large exhaust gas temperature drop at the SCR catalytic converter via the low-pressure turbine an adequate amount of energy required to supply the cylinders of the internal combustion engine with a desired quantity of charge air can no longer be provided.

Abstract: A control apparatus for an internal combustion engine includes an exhaust gas concentration parameter sensor, a cylinder gas amount parameter acquisition device, an air-fuel ratio controller, an operation status determination device, and a determination value setting device. The air-fuel ratio controller is to perform an air-fuel ratio fluctuation control to control an air-fuel ratio in the internal combustion engine to fluctuate in a predetermined state. The operation status determination device is to determine an operation status of the internal combustion engine or an auxiliary device of the internal combustion engine based on an exhaust gas concentration parameter detected by the exhaust gas concentration parameter sensor in a case where an amount of a cylinder gas represented by a cylinder gas amount parameter acquired by the cylinder gas amount parameter acquisition device is equal to or larger than a predetermined determination value while the air-fuel ratio fluctuation control is being performed.

Abstract: An assembly for an exhaust bypass valve of a two-stage turbocharger can include a first turbocharger stage; a second turbocharger stage; an exhaust bypass valve that includes an open state and a closed state; and a linkage mechanism that links the exhaust bypass valve to an actuator where the linkage mechanism includes a locked state for the closed state of the exhaust bypass valve.

Abstract: An internal combustion engine including a first set of cylinders includes: a first two-stroke compression cylinder housing a first compression piston connected to a first crank shaft; an intermediate two-stroke compression cylinder housing an intermediate compression piston, wherein the second two-stroke compression cylinder is configured to receive compressed gas from the first two-stroke compression cylinder; and a first four-stroke combustion cylinder housing a first combustion piston, wherein the first four-stroke combustion cylinder is configured to receive compressed gas from the intermediate two-stroke compression cylinder; wherein the internal combustion engine further includes a second set of cylinders including: a second two-stroke compression cylinder housing a second compression piston connected to the first crank shaft, wherein the second two-stroke compression cylinder is configured to provide compressed gas to the intermediate two-stroke compression cylinder; and a second four-stroke combustion

Abstract: Exhaust gases (28) from an engine (16, 16?), input to turbo-compounder (20), drive a bladed turbine rotor (48) therein, which drives a generator (56, 56.1, 56.1?, 126, 126?, 126?), the output of which is used to electrically drive an induction motor (104, 104?), the rotor (106) of which is mechanically coupled to the engine (16, 16?) so as to provide for recovering power to the engine (16, 16?). The turbo-compounder (20) also incorporates a wastegate valve (36, 36?) to provide for the exhaust gases (28) to bypass the bladed turbine rotor (48). Upon startup the wastegate valve (36, 36?) is opened, and the generator may be decoupled from the engine (16, 16?). The generator (56, 56.1, 56.1?, 126, 126?, 126?) may be coupled to the engine (16, 16?) either by closure of a contactor (110, 110?), engagement of an electrically-controlled clutch (124), or by control of either a solid-state switching (125) or control system or an AC excitation signal (130), when the frequency (fGENERATOR) of the generator (56, 56.1, 56.

Abstract: A system includes a hybrid power plant controller programmed to receive a plurality of signals representative of one or more operating parameters of a hybrid power plant. The hybrid power plant includes at least one gas turbine engine, at least one gas engine, and at least one catalyst system. The hybrid power plant controller is programmed to utilize closed-loop optimal control to generate one or more operational setpoints based on the one or more operating parameters for the hybrid power plant to optimize performance of the hybrid power plant. The hybrid power plant controller uses closed-loop optimal control to provide the one or more operational setpoints to respective controllers of the at least one gas turbine engine, the at least one gas engine, and the at least one catalyst system to control operation of the gas turbine engine, the gas engine, and the catalyst system.

Abstract: A lower link (13) is formed such that outer circumferential sides of both end portions of a crankpin through-hole (21) are stiffer than a center portion of the crankpin through-hole (21), i.e. a bifurcation portion of a bifurcated shape thereof. The both end portions of the crankpin through-hole (21) are formed such that inner circumferential surfaces (22a) of the both end portions are curved at a predetermined curvature in an axial direction of a crankshaft with no load input on the lower link (13). Moreover, the center portion of the crankpin through-hole (21) is formed such that an inner circumferential surface (22b) thereof is located inward of the inner circumferential surfaces (22a) of the both end portions and is straight in the axial direction of the crankshaft with no load input on the lower link (13).

Abstract: A method for assembling and disassembling a module of gas turbine engine is provided, along with a gas turbine engine configured for modular assembly/disassembly. The engine includes a first shaft and a second shaft. The first shaft connects a compressor section and a first turbine section. The second shaft is connected to the second turbine section. The first and second shafts are rotatable about the engine rotational axis. The second shaft and the second turbine section together form a module that can be assembled, or disassembled, or both from the engine.

Abstract: A turbofan engine (20) comprises a fan (28). A fan drive gear system (60) is configured to drive the fan. A low spool comprises a low pressure turbine (50) and a low shaft (56) coupling the low pressure turbine to the fan drive gear system. An intermediate spool comprises an intermediate pressure turbine (48), a compressor (42), and an intermediate spool shaft (54) coupling the intermediate pressure turbine to the intermediate spool compressor. A combustor (45) is between a core spool compressor (44) and a high pressure turbine (46). A first (160) main bearing engages a static support (164; 164?) and a forward hub (236) of the intermediate spool. A second (162) main bearing engages the low shaft and the forward hub.