Abstract: A seal segment is disclosed for a shroud ring of a rotor of a gas turbine engine. The gas turbine engine has a principal axis, there being defined an axial direction (A) parallel to the principal axis, a radial direction (R) perpendicular to the principal axis and a circumferential direction (C) perpendicular to the radial direction and the axial direction. The seal segment comprises a radially inner side and a radially outer side, wherein the seal segment comprises a circumferential side face with a slot extending axially along the seal segment and circumferentially into the seal segment. The slot is for retaining a strip seal therein. There is provided at least one relief slit formed in the seal segment from the radially outer side of the seal segment and in communication with the slot.

Abstract: A seal assembly includes an annular plate extending axially between a first end and a second end. At least two layers of metal tape are stacked around the annular plate. Each layer of the at least two layers of metal tape includes a metal sheet extending axially between a first end and a second end. The second end of the metal sheet is axially forward or aft of the annular plate, and a plurality of strips is formed on the second end of the metal sheet.

Abstract: A seal assembly for a gas turbine engine according to an example of the present disclosure includes, among other things, a seal that has a seal body extending circumferentially between opposed mate faces and at least one rail extending outwardly from the seal body. The seal body has a seal face that bounds a gas path. At least one rail aperture is defined at least partially through the at least one rail. At least one wear liner has a liner body. The liner body defines a liner aperture and an outer periphery that mates with the at least one rail aperture. A seal support is mountable to an engine case. The seal support has at least one support hook that mates with the liner aperture to mount the seal to the seal support. The at least one support hook is made of a first material, and the liner body is made of a second material that differs in construction from the first material. A method of assembly for a gas turbine engine is also disclosed.

Abstract: A unitary rub strip comprises a casing having an inner surface and an outer surface opposite the inner surface; a unitary rub strip is formed integral with the casing proximate the inner surface, wherein the unitary rub strip comprises a modified structure within the casing configured to abrade responsive to an interaction with a rotating element.

Abstract: A shroud assembly for a gas turbine engine includes: at least one shroud hanger; an annular array of shroud segments carried by the child hanger at least one and arrayed about an engine centerline axis, each of the shroud segments having a flowpath side defining a portion of a primary engine flowpath, and an opposed backside facing the at least one shroud hanger, wherein the shroud segment is mounted to the at least one shroud hanger such that it is movable in a radial direction between an inboard position and an outboard position, in response to a balance of gas pressures prevailing on the flowpath side and the backside; and biasing means which urge each of the shroud segments towards one of the positions.

Abstract: The invention proposes a geared turbomachine comprising a fan (16), a low pressure shaft (28) which drives the fan (16) rotationally around the main axis (A) of the turbomachine (10), a speed reducer (40) interposed between the fan (16) and the low pressure shaft (28), and an alternator (52) driven notably by the low pressure shaft (28), characterised in that the alternator (52) comprises an inductor (54) and an armature (56) of which one of the inductor (54) and the armature (56) is integral with the fan (16) and the other of the inductor (54) and the armature (56) is integral with the low pressure shaft (28).

Abstract: A morphing aerodynamic control surface geometry comprising a control surface having an articulated portion comprising a flexible skin coupled at an exterior of the articulated portion, the flexible skin comprising opposed interlocking elements sandwiched within a flexible polymer coupled to the interlocking elements; wherein the flexible skin is configured compliant responsive to an articulation of the articulated portion.

Abstract: Various methods and systems are provided for a variable geometry turbine. In one example, a system for an engine comprises a turbocharger turbine including a nozzle ring, the nozzle ring including a plurality of stationary vanes, each vane of the plurality of stationary vanes including a plurality of injection ports arranged at an outer surface of the vane and a gas supply system to supply variable gas flow to and out of the plurality of injection ports.

Abstract: An apparatus for dislodging material within an airfoil element is disclosed. In various embodiments, the apparatus includes a robotic arm configured for multi-axis movement of a mounting head with respect to the airfoil element; a vibration mechanism connected to the mounting head; and a tip member connected to the vibration mechanism and configured for vibratory contact with a surface of the airfoil element.

Abstract: A turbocharger includes a bearing housing containing a motor within an interior portion of the bearing housing. A liquid-cooled power module is secured to an exterior portion of a bearing housing. The power module contains electrical components that power and control speed of the motor, and has an enclosure that includes sealed first and second volumes separated by a common wall. The first volume is a liquid-cooled compartment for removing heat generated from the electrical components, and the second volume is a liquid-free compartment containing the electrical power components. The electrical power components are fixed to the common wall, which is formed of a heat conductive material, and which may include fins extending into the first volume to optimize heat transfer from the common wall into the liquid-cooled compartment. Finally, the liquid-cooled power module communicates with the motor directly through the bearing housing.

Abstract: There is provided a turbine casing capable of easily realizing improvement of reliability regarding a connection with an exhaust pipe. A turbine casing according to an embodiment includes an exhaust pipe connecting part formed of ferritic heat resistant steel, to which an exhaust pipe formed of austenitic heat resistant steel is connected. Here, the exhaust pipe connecting part and the exhaust pipe are fastened by using screws.

Abstract: Embodiments of a frequency independent damper assembly are disclosed. In some embodiments, the damper assembly includes a damper housing, a damper plunger and a support spring. The damper plunger is disposed at least partially within the housing and movable within to define a first primary damper cavity and a second primary damper cavity. The support spring includes a plurality of flexible elements coupled to the damper housing and disposed radially outward of the first primary damper cavity and the second primary damper cavity. The support spring defines a first accumulator volume and a second accumulator volume. A flow-through channel couple the first accumulator volume to the second accumulator volume. A gas bearing including the frequency independent damper assembly is disclosed.

Abstract: A bearing assembly for a rotatable shaft, the bearing assembly comprising: a bearing housing; a bearing located within the bearing housing having an axis of rotation and arranged to receive a rotatable shaft; a first spring bar that couples the bearing to the bearing housing, the first spring bar being configured to tune vibrations of the rotatable shaft; and a first piezoelectric actuator disposed between the bearing housing and the first spring bar, the first piezoelectric actuator being configured to extend in a first direction, wherein extension of the piezoelectric actuator in the first direction displaces the first spring bar relative to the bearing housing.

Abstract: A process for additively controlled surface features of a gas turbine engine casing. The process comprises forming the casing having an inner surface and an outer surface opposite the inner surface; forming a surface feature on the casing proximate the inner surface, wherein the surface feature comprises a structure on the inner surface configured to align or misalign with respect to a flow direction of a working fluid in a flow path of the casing.

Abstract: A system for rotating a turbomachine rotor relative to a stator casing, the rotor including an annular row of blades, the rotating system including a supporting arm including a first end arranged for gripping a leading edge of a first blade of the annular row and a second end arranged for gripping a trailing edge of the first blade; an electric motor including a shaft and a body attached to the supporting arm; and a wheel coupled to the shaft of the motor and provided with a rolling strip, the wheel, furthermore, being arranged so that the rolling strip can come into contact with an annular wall of the stator casing when the supporting arm is mounted on the first blade.

Abstract: A waste heat recovery system (100) is provided. At least one heat exchanger (104) is fluidically coupled to a waste heat source (102) and is configured for selectively recovering heat from the waste heat source (102) to heat a working fluid (108). An energy conversion device (112) is fluidically coupled to the at least one heat exchanger (104) and is configured to receive the working fluid (108) and to generate an energy for performing work or transferring the energy to another device using the heat recovered from the waste heat source (102). A condenser (122) is fluidically coupled to the energy conversion device (112) and configured to receive the working fluid (108) from the energy conversion device (112) and to condense the working fluid (108) into a liquid phase.

Abstract: A new combined thermodynamic system (101) uses waste heat from an exhaust combustion gas of a prime mover (162) to produce mechanical power that operates a refrigeration circuit (105). The refrigeration circuit can cool air ingested by the prime mover to improve its power rate and/or efficiency. The system comprises a power generation circuit (103) adapted to circulate a first flow of a working fluid and produce mechanical power therewith. The combined thermodynamic system (1) further comprises a refrigeration circuit (105) comprising a refrigerant compressor (117) driven by mechanical power generated by the power generation circuit (103) and adapted to circulate a second flow of said working fluid in the refrigeration circuit (105).

Abstract: An internal combustion engine defining at least one cylinder, the internal combustion engine including a first camshaft lobe, a second camshaft lobe, a valve in fluid communication with the at least one cylinder, a pivot, and a follower in contact with and operatively engages the pivot, the valve, the first camshaft lobe, and the second camshaft lobe. During use, the follower is operable in a first mode, in which the follower is configured to transmit motion between the first camshaft lobe and the valve, and a second mode, in which the follower is configured to transmit motion between the first camshaft lobe and the valve and the second camshaft lobe and the valve.

Abstract: An exhaust valve rocker arm assembly operable in a combustion engine mode and an engine braking mode, the exhaust valve rocker arm assembly selectively opening first and second exhaust valves and including a rocker shaft, exhaust valve rocker arm assembly and a ball engine brake mechanism. The exhaust valve rocker arm assembly has an exhaust rocker arm that receives the rocker shaft and is configured to rotate around the rocker shaft. The ball engine brake mechanism is configured on the exhaust rocker arm and selectively actuates a valve plunger causing an exhaust valve to perform engine braking. The ball engine brake mechanism includes a capsule assembly having a capsule, a biasing member and a ball. The capsule has a cylindrical body that extends between a first end having an actuation face and a second end having a spring return face.

Abstract: A check valve for controlling the flow of a fluid into a variable camshaft timing phaser.

Abstract: A valve drive for a cylinder head of an internal combustion engine has a first camshaft which is rotatably mounted in a first and a second camshaft bearing and which includes at least one cam with a first cam curve and a second cam curve that differs from the first cam curve. A gas exchange valve is actuated by the first or the second cam curve. A camshaft section is provided, by which the cam can be moved by an actuator such that the gas exchange valve can be actuated either via the first or the second cam curve. The first camshaft and the cam have a fixed position relative to each other. The first camshaft can be axially moved in the first and the second camshaft bearing, and an axial lock is provided for the camshaft.

Abstract: An exhaust valve rocker arm assembly operable in a combustion engine mode and an engine braking mode includes: a rocker shaft that defines a pressurized oil supply conduit; a rocker arm that receives the rocker shaft and rotates around the rocker shaft, the rocker arm including a rocker arm oil supply passage defined in the rocker arm; a valve bridge for engaging a first exhaust valve and a second exhaust valve; a hydraulic lash adjuster assembly, disposed on the rocker arm, including a first plunger body movable between a first position and a second position; and a check valve, disposed on the rocker arm, including an actuator for selectively releasing pressure in the hydraulic lash adjuster assembly. In the engine braking mode, by rotation of the rocker arm the pressurized oil supply conduit is brought into fluid communication with the rocker arm oil supply passage.

Abstract: In an internal combustion engine, a linkage is provided between an auxiliary motion source and a main motion load path, such that motions received by the linkage from the auxiliary motion source result in provision of a first force to at least one engine valve and a second force to the main motion load path in a direction toward a main motion source. Where an automatic lash adjuster is associated with the main motion load path, the second force may be selected to aid in the control of lash adjustments made by the automatic lash adjuster. In various embodiments, the linkage may be embodied in an mechanical linkage, whereas in other embodiments, an hydraulic linkage may be employed. The linkage may be incorporated into, or otherwise cooperate, a valve bridge or a rocker arm.

Abstract: A housing and valving assembly for providing pre-charged oil filters wherein the housing is capable of interfacing with a mount interface, wherein the housing is configured to retain a volume of contaminated oil upon removal, and wherein the valving assembly is configured to minimize oil leakage upon insertion and removal of the housing from the mount interface.

Abstract: The invention describes an internal combustion engine having at least one crankcase, at least one cylinder head, at least one cylinder head cover, at least one oil separator and at least one oil pan for collecting returning oil as well as having at least one oil return channel that connects the oil separator and the oil pan.

Abstract: The present invention provides a particulate filter for use in an emission treatment system of a gasoline engine, the filter having an inlet side and an outlet side, wherein at least the inlet side is loaded with a synthetic ash.

Abstract: In a method for heating an exhaust system of a combustion engine of a motor vehicle, the exhaust system comprises at least two components for exhaust gas cleaning. For at least one component, a temperature regulation is provided for heating the component while using a heating operation mode. For the heating of the exhaust system, a heating operation is used via a pulse control with heating pulses (101) and heating pauses (102), which switches between a heating operation mode and a normal operation without heating measures.

Abstract: The present disclosure provides a reductant injection system for an SCR catalyst of an internal combustion engine, the reductant injection system comprising at least one injector, a first storage container for storing liquid reductant and a pump for pumping reductant from the first storage container to the injector for injection into an exhaust gas stream, wherein the injector is cooled by reductant. The reductant injection system may comprise a second storage container for storing liquid reductant and is configured such that the injector can be cooled by reductant from the second storage container.

Abstract: A method and a device for determining the injection quantity or the injection rate of a fluid which is transported to an injector through a hydraulic line and is injected into a reaction space by the injector. The fluid pressure in the hydraulic line is measured by a pressure sensor, the fluid pressure at the injector is determined using the pressure measured by the pressure sensor and a stored transmission function of the hydraulic line, and the injection quantity or the injection rate of the fluid injected by the injector is determined using the fluid pressure determined at the injector.

Abstract: An apparatus for controlling exhaust gas purification may include a front unit communicating with an engine exhaust pipe and having a first catalytic filter; a rear unit communicating with the front unit through a connection pipe and having a second catalytic filter and a bypass channel formed to surround the second catalytic filter; and an actuator to open or close the bypass channel. In particular, one end of the bypass channel is opened or closed and other end thereof is sealed so that the second catalytic filter is heated by a primary filtered exhaust gas filtered by and discharged from the front unit.

Abstract: Method and system for the removal of nitrogen oxides, volatile organic compounds and particulate matter from engine exhaust gasat cold start conditions.

Abstract: The present invention is directed to solve problems in conventional HC-SCR systems and provide cost-effective exhaust gas treatment systems with high NOx removal rates especially at low temperatures. A hydrocarbon selective catalytic reduction (HC-SCR) system in which H2 is added to a diesel oxidation catalyst (DOC) along with hydrocarbon. In other words, it can be said as an exchange gas purification method including removing NOx from an exhaust gas by adding H2 to a diesel oxidation catalyst (DOC) along with hydrocarbon in a hydrocarbon selective catalytic reduction (HC-SCR) system.

Abstract: A method for designing an emissions control substrate of an engine exhaust system to optimize exhaust flow through the emissions control substrate to an exhaust sensor within or proximate to the substrate. The emissions control substrate includes an inner core and an outer core surrounding the inner core. The inner core defines a plurality of inner channels and the outer core defines a plurality of outer channels. The plurality of inner channels are smaller than the outer channels, such that the inner core has a greater channel density than the outer core.

Abstract: Diagnostics for inadequate performance and/or degradation of an exhaust aftertreatment system are disclosed. A performance degradation analysis of the exhaust aftertreatment system includes a determination of a long term brake specific NOx value over a time period and a comparison of the long term brake specific NOx value to a threshold value.

Abstract: A cross-pipe exhaust assembly includes: a first inlet collector splitting into an upper outlet and a lower outlet; a second inlet collector splitting into an upper outlet and a lower outlet; a first outlet collector joining an upper inlet and a lower inlet into a single outlet of the first outlet collector; a second outlet collector joining an upper inlet and a lower inlet into a single outlet of the second outlet collector; a first inline conduit located between the first inlet collector and the first outlet collector; a second inline conduit located between the second inlet collector and the second outlet collector; a first crossover conduit extending between the first inlet collector and the second outlet collector; and a second crossover conduit extending between the second inlet collector and the first outlet collector.

Abstract: The invention relates to an outer pipe (1) of an outlet (4) of a volute (3) of a heat transfer pump (2), particularly arranged in a recess defined in a heat engine of a vehicle, the outer pipe (1) being provided on an outer surface (9) of the cylinder housing (8) of the engine and comprising a first component (5a) capable of guiding the heat-transfer fluid from said outlet (4) to an inlet (6) of an inner circuit (7) for circulating the heat-transfer fluid defined in the cylinder housing (8).

Abstract: A pump assembly (1) for a vehicle cooling system comprising an impeller (20) and an impeller shaft (200) extending along an impeller axis (X-X). The pump assembly (1) comprises an electric drive (30) and a mechanical drive (40). The pump assembly (1) also comprises transmission means (5) comprising a kinematic transmission assembly (50) comprising an impeller gear (52), a first command gear (53), operatively connected to the electric drive (30) and to the impeller gear (52), and a second command gear (54) operatively connected to the mechanical drive (40) and to the impeller gear (52). Wherein said impeller gear (52) is driven in rotation by the first command gear (53) or by the second command gear (54).

Abstract: At least one thermal module in fluidic communication with the one or more electronic components. The thermal module including a hydraulic motor operable to rotate a motor output shaft. The module further including a fan coupled to the motor output shaft, at least one heat exchanger in fluidic communication with the fan to provide passage therethrough of an air stream in response to rotational movement of the fan, and a conduit carrying a pressurized liquid stream through the hydraulic motor and each of the at least one heat exchanger. The pressurized liquid stream causing the motor output shaft to rotate and wherein heat in one of the air stream or the pressurized liquid stream is passed through each of the at least one heat exchanger and rejected into the other of the air stream or the pressurized liquid stream. A thermal management system including the at least one thermal module is disclosed.

Abstract: A thermostat for an engine cooling system is arranged between an engine and a radiator. The thermostat may include: a housing having a coolant inlet through which inflow coolant flows in from the engine and a radiator side outlet; a main valve provided in the housing and coupled to one side of a wax to open and close the radiator side outlet by a change in volume of the wax; and a heating unit coupled to the other side of the wax to supply heat to the wax.

Abstract: An internal combustion engine and a method of controlling an internal combustion engine are provided, that are more efficient than existing engines. The internal combustion engine includes a combustion chamber, and the engine is configurable to operate in: a compressionless operating mode where the engine is driven by combustion of fuel and oxidant in the combustion chamber without compression of the fuel and oxidant; and a compression generating operating mode where the engine is used to compress fluid in the combustion chamber.

Abstract: A fuel and gas mixing structure for an engine is provided. This mixing structure includes a body configured to be positioned between a fuel injector and a cylinder of an engine. The body defines an interior volume that is configured to receive gas (e.g., air) from outside the body and to receive one or more streams of fuel from the fuel injector in the interior volume. The body also includes one or more upper channels and one or more lower channels that are configured to provide a substantially similar amount of flow relative to each other to the interior volume The body also defines one or more mixture conduits configured to conduct plumes of the fuel and gas, while mixing, from the interior volume to one or more exit ports and therethrough to the cylinder.

Abstract: Methods and systems are provided for boosted engine systems. In one example, a system may include a pressurized air induction system with two pathways, the first for delivering ambient and the second for delivering boosted air to the engine. The pressurized air induction system is also adapted to store boosted air for faster supply of boost pressure in the event of demand for greater engine torque.

Abstract: A liquid drain valve assembly for a charge air cooler includes a valve housing configured to couple to the charge air cooler, the valve housing having a condensate inlet configured to receive condensate from the charge air cooler, and a condensate outlet, a valve mechanism slidingly disposed within the valve housing and configured to selectively close the condensate inlet and the condensate outlet to facilitate preventing charge air from leaking during condensate draining, and a diaphragm assembly disposed within the valve housing and configured to selectively engage the valve mechanism to selectively open the condensate inlet and the condensate outlet to drain condensate from the charge air cooler when the charge air cooler is in a boosted condition and isolated from the atmosphere.

Abstract: Various systems and methods are provided for a turbocharger system. In one example, system for use with a power generator having a rotary machine including a combustor comprises: a heat exchanger positioned to receive exhaust gases from the combustor; and a turbocharger system, comprising: a low pressure turbocharger including a low pressure turbine adapted to receive gas flow from the heat exchanger and a low pressure compressor adapted to supply compressed air to the heat exchanger; a high pressure turbocharger including a high pressure turbine adapted to receive gas flow from the heat exchanger and a high pressure compressor adapted to receive gas flow from the low pressure compressor and supply compressed air to the rotary machine; and a second combustor adapted to inject exhaust gases into a flow path arranged between the heat exchanger and an inlet to each of the high pressure turbine and the low pressure turbine.

Abstract: An exhaust gas turbocharger may include a turbine and a compressor for compression of charge air for an internal combustion engine, and a controllable actuator and a component mechanically adjustable via the actuator. The compressor may include a compressor casing through which charge air is flowable. A holding device may be integrally disposed on the compressor casing. The actuator may be coupled to the holding device, and may be secured to the compressor casing via the holding device. The holding device may have at least one integrally formed protective contour that may extend around the actuator in certain regions at a separation distance from the actuator, and may enclose the actuator in certain regions, such that the actuator is shielded in certain regions from external influences via the at least one protective contour.

Abstract: The present invention relates to the carbon deposit buildup in the internal combustion engine, or more specifically the removal of such carbon from the induction system, combustion chamber, and the exhaust system. The method is one in which a high volumetric flow rate of chemical/chemical mixes are used to remove a greater amount of carbon from the engine. These preferred chemical/chemical mix flow rates are 6 to 9 Gallons per hour, which is approximately 9 times the volumetric flow rate of the industry standard of 1 gallon per hour.

Abstract: Various systems and methods are provided for a turbocharger system. In one example, a system for use with a power generator having a rotary machine including a combustor comprises: a heat exchanger positioned to receive exhaust gases from the combustor; and a turbocharger system, comprising: a low pressure compressor fluidly coupled to the heat exchanger and adapted to supply gases to the heat exchanger; a low pressure turbine and a high pressure turbine each fluidly coupled to the heat exchanger and adapted to receive gases from the heat exchanger; a high pressure compressor fluidly coupled to the rotary machine and the low pressure compressor, adapted to receive gases from the low pressure compressor and supply compressed air to the rotary machine; and a water injector adapted to inject water into a flow path between the low pressure compressor and the heat exchanger.

Abstract: A turbofan engine includes a fan that delivers air into a bypass duct and into a core engine. A fan drive gear system includes a gear carrier and at least one ring gear. The at least one ring gear is coupled to an engine case of the turbofan engine with a compliant flexure. A fan shaft couples the gear carrier in the fan drive gear system to the fan. A first bearing is forward of the fan drive gear system and supports the fan drive gear system. A second bearing is aft of the fan drive gear system and supports the fan drive gear system.

Abstract: A vehicle structure with unitary casing for an attritable gas turbine engine comprising a vehicle structure forming a unitary casing having a casing wall opposite the vehicle structure; a bypass duct formed between the casing wall and the vehicle structure, wherein the unitary casing is configured to receive a core of the attritable gas turbine engine.

Abstract: A two-tier lubrication system may comprise an oil nozzle located in a bearing compartment. A main oil system may be configured to provide oil to the oil nozzle. A scavenge system may be configured to collect oil from the bearing compartment. A valve may be fluidly coupled between the main oil system and the scavenge system. The valve may be configured to actuate between a main flow position and a scavenge flow position.