Turbocharger Cartridge, Bypass, and Engine Cylinder Head Assembly

A turbocharger assembly includes a center housing rotating assembly, which comprises a center housing, bearings housed in the center housing, a shaft rotatably supported in the bearings, and compressor and turbine wheels affixed to opposite ends of the shaft; an engine cylinder head and a housing member formed together as a one-piece integral structure, wherein the housing member defines a compressor volute that receives compressed air from the compressor wheel, a turbine volute for receiving exhaust gas from the engine, a turbine nozzle for directing exhaust gas from the turbine volute into the turbine wheel, and a turbine contour; a compressor contour plug that defines an axial inlet for the compressor and a compressor contour; and a wastegate unit operable for allowing exhaust gas to bypass the turbine wheel when the wastegate unit is open and preventing exhaust gas from bypassing the turbine wheel when the wastegate unit is closed. 1. A turbocharger cartridge , bypass , and engine cylinder head assembly , comprising:a center housing rotating assembly comprising a center housing, bearings housed in the center housing, a shaft rotatably supported in the bearings, and compressor and turbine wheels affixed to opposite ends of the shaft;an engine cylinder head and a housing member formed together as a one-piece integral structure, wherein the housing member defines at least a compressor volute that receives compressed air from the compressor wheel, a turbine volute for receiving exhaust gas from the engine, a turbine nozzle for directing exhaust gas from the turbine volute into the turbine wheel, and a turbine contour;a compressor contour plug that defines an axial inlet for the compressor and a compressor contour, wherein the compressor contour plug is separately formed from the center housing and the engine cylinder head;wherein the housing member defines a receptacle for receiving the center housing rotating assembly, and the receptacle and the center housing ...

Turbocharger and Engine Cylinder Head Assembly

A turbocharger and engine cylinder head assembly includes a center housing rotating assembly (CHRA) and an engine cylinder head defining a receptacle for receiving the CHRA, the engine cylinder head defining a compressor volute. A diffuser is defined for receiving and diffusing the compressed air from the compressor wheel and supplying the compressed air to the compressor volute. The assembly includes a cap formed separately from the engine cylinder head and removably secured to the engine cylinder head, the cap defining one wall of the diffuser. An opposite wall of the diffuser is defined either by the engine cylinder head or a portion of the center housing, depending on whether the CHRA slides into the receptacle compressor-wheel-first or turbine-wheel-first. The compressor volute can be located on a turbine side of the diffuser.

ACTIVE SURGE SUPRESSION THROUGH DYNAMICALLY CONTROLLED ACTUATED TURBOSHAFT SPEED

Methods and systems for controlling a turbocharger associated with an engine. The turbocharger is operated in a region of operation creating potential surge conditions, but surge is avoided by varying the speed of the turbocharger in accordance with speed parameters determined by observing a resonant frequency of surge in the system.

Turbocharger Cartridge and Engine Cylinder Head Assembly

An turbocharger cartridge and engine cylinder head assembly includes a turbocharger cartridge that includes some but not all of the components of a turbocharger, while the engine cylinder head provides the components of the turbocharger that are not included in the cartridge. The cartridge includes a center housing rotating assembly having a shaft that joins a turbine wheel to a compressor wheel, the shaft passing through bearings housed in the center housing. The engine cylinder head defines a receptacle that receives the cartridge. The head also defines a diffuser and volute for the compressor, and a turbine volute. The cartridge defines a turbine nozzle and turbine contour, and further includes a wastegate unit as a part of the cartridge. 1. A turbocharger cartridge and engine cylinder head assembly , comprising: a center housing rotating assembly comprising a center housing defining a bore therethrough, bearings housed in the bore, a shaft rotatably supported in the bearings, a compressor wheel affixed to one end of the shaft, and a turbine wheel affixed to an opposite end of the shaft;', 'a housing member that defines a turbine nozzle and a turbine contour; and', 'a wastegate unit operable for allowing exhaust gas to bypass the turbine wheel when the wastegate unit is open; and, 'a turbocharger cartridge forming a unit that comprisesan engine cylinder head defining a receptacle for receiving the turbocharger cartridge, the engine cylinder head defining a diffuser for receiving and diffusing pressurized air from the compressor wheel, a compressor volute that receives the air from the diffuser, and a turbine volute for receiving exhaust gas from an engine;wherein the turbocharger cartridge and the receptacle in the engine cylinder head are configured so that the cartridge slides, compressor wheel first, into the receptacle in an axial direction until the compressor wheel is aligned with the diffuser and the turbine wheel is aligned with the turbine nozzle.2. The ...

Rotor with balancing features and balancing method

A rotor for a fluid machine includes a wheel that is supported for rotation about an axis of rotation. The wheel includes a back wall with an outer rim edge. The rotor also includes a plurality of blades that are attached to the back wall and that are spaced apart about the axis of rotation. Moreover, the rotor includes an inter-blade area on the back wall between neighboring ones of the plurality of blades. Furthermore, the rotor includes a balancing feature that is included in the inter-blade area on the back wall. The balancing feature intersects and defines part of the outer rim edge.

TURBINE ASSEMBLY WITH SEMI-DIVIDED NOZZLE AND HALF-COLLAR PISTON

A turbine assembly for a turbocharger includes a variable nozzle formed by a sliding half-collar piston. A first-stage nozzle has a plurality of first vanes supported by a first nozzle ring and extending axially therefrom. A second-stage nozzle has a second nozzle ring connected to the ends of the first vanes, and a plurality of second vanes extending axially therefrom. The piston regulates flow through the second-stage nozzle, while the first-stage nozzle remains open when the piston is fully closed. The second nozzle ring at least partially divides the first vanes from the second vanes. The half-collar piston includes recesses that receive the second vanes and only partially surround the girth of each second vane.

Active surge supression through dynamically controlled actuated turboshaft speed

Methods and systems for controlling a turbocharger associated with an engine. The turbocharger is operated in a region of operation creating potential surge conditions, but surge is avoided by varying the speed of the turbocharger in accordance with speed parameters determined by observing a resonant frequency of surge in the system.

ROTOR WITH BALANCING FEATURES AND BALANCING METHOD

A rotor for a fluid machine includes a wheel that is supported for rotation about an axis of rotation. The wheel includes a back wall with an outer rim edge. The rotor also includes a plurality of blades that are attached to the back wall and that are spaced apart about the axis of rotation. Moreover, the rotor includes an inter-blade area on the back wall between neighboring ones of the plurality of blades. Furthermore, the rotor includes a balancing feature that is included in the inter-blade area on the back wall. The balancing feature intersects and defines part of the outer rim edge.

Treatment process for a centrifugal compressor wheel to extend low-cycle fatigue life

A process for treating a centrifugal compressor wheel includes a combination of cold expansion of at least part of the bore of the wheel to induce residual compressive stresses in a region around the bore, and surface peening at least parts of the compressor wheel such as the back disk and portions of the blades.

Turbocharger cartridge, bypass, and engine cylinder head assembly

A turbocharger assembly includes a center housing rotating assembly, which comprises a center housing, bearings housed in the center housing, a shaft rotatably supported in the bearings, and compressor and turbine wheels affixed to opposite ends of the shaft; an engine cylinder head and a housing member formed together as a one-piece integral structure, wherein the housing member defines a compressor volute that receives compressed air from the compressor wheel, a turbine volute for receiving exhaust gas from the engine, a turbine nozzle for directing exhaust gas from the turbine volute into the turbine wheel, and a turbine contour; a compressor contour plug that defines an axial inlet for the compressor and a compressor contour; and a wastegate unit operable for allowing exhaust gas to bypass the turbine wheel when the wastegate unit is open and preventing exhaust gas from bypassing the turbine wheel when the wastegate unit is closed.

TURBOCHARGER WITH SLIDING PISTON, AND HAVING VANES AND LEAKAGE DAMS

A turbocharger having a sliding piston for regulating exhaust gas flow into the turbine wheel includes a set of first vanes mounted on a fixed first wall of the turbine nozzle and projecting axially toward an opposite second wall of the nozzle, and/or a set of second vanes mounted on the end of the piston and projecting in an opposite axial direction toward the first wall of the nozzle. For the/each set of vanes, there are leakage dams formed on the wall that is adjacent the vane tips when the piston is closed. The leakage dams are closely adjacent the vane tips and discourage exhaust gas from leaking in a generally radial direction past the vane tips as the piston just begins to open from its fully closed position.

Compressor housing assembly for a turbocharger

A compressor housing assembly for a turbocharger can include a compressor housing shell that includes an axis for alignment with a rotational axis of a compressor wheel, a wall that includes features defined in part by radii with respect to the axis, and an edge that defines in part an inlet opening of a shroud port; and an insert that includes a shroud section and a noise suppressor section that define a recirculation port where the insert is axially located by the wall of the compressor housing shell, where an internal recirculation passage is defined in part by the insert and the wall, and where an edge of the shroud section (e.g., a lowermost edge) defines in part the inlet opening of the shroud port.

Turbocharger having adjustable-trim centrifugal compressor including divergent-wall diffuser

A centrifugal compressor for a turbocharger includes an inlet-adjustment mechanism in an air inlet for the compressor, operable to move between an open position and a closed position in the air inlet. Movement of the inlet-adjustment mechanism from the open position to the closed position is effective to shift the compressor's surge line to lower flow rates. The compressor includes a diffuser extending between an exducer of the compressor wheel and a volute for collecting pressurized air from the compressor. The diffuser is defined between first and second walls that diverge from each other in a radially outwardly direction through the diffuser. The divergent-wall diffuser enhances the shift of the surge line to lower flow rates when the inlet-adjustment mechanism is put in the closed position.

TURBOCHARGER WITH SLIDING PISTON, HAVING OVERLAPPING FIXED AND MOVING VANES

A turbocharger having a sliding piston for regulating exhaust gas flow into the turbine wheel includes a set of fixed vanes mounted on a fixed first wall of the turbine nozzle and projecting axially toward an opposite second wall of the nozzle, and a set of moving vanes mounted on the end of the piston and projecting in an opposite axial direction toward the first wall of the nozzle. The two sets of vanes are circumferentially staggered relative to each other and overlap each other, the degree of overlap depending on the piston's axial position. The turbine wheel can be a splittered turbine wheel having long blades alternating with shorter blades.

Turbocharger cartridge and engine cylinder head assembly

An turbocharger cartridge and engine cylinder head assembly includes a turbocharger cartridge that includes some but not all of the components of a turbocharger, while the engine cylinder head provides the components of the turbocharger that are not included in the cartridge. The cartridge includes a center housing rotating assembly having a shaft that joins a turbine wheel to a compressor wheel, the shaft passing through bearings housed in the center housing. The engine cylinder head defines a receptacle that receives the cartridge. The head also defines a diffuser and volute for the compressor, and a turbine volute. The cartridge defines a turbine nozzle and turbine contour, and further includes a wastegate unit as a part of the cartridge.

TREATMENT PROCESS FOR A CENTRIFUGAL COMPRESSOR WHEEL TO EXTEND LOW-CYCLE FATIGUE LIFE

A process for treating a centrifugal compressor wheel includes a combination of cold expansion of at least part of the bore of the wheel to induce residual compressive stresses in a region around the bore, and surface peening at least parts of the compressor wheel such as the back disk and portions of the blades.

Turbocharger with sliding piston assembly

A turbocharger having a turbine housing defining a chamber for receiving exhaust gas, and a nozzle leading from the chamber. Exhaust gas flows from the nozzle through a turbine wheel in the chamber and changes direction from a radially inward direction in the nozzle to an axial direction downstream of the turbine wheel. A divider in the nozzle divides the nozzle into first-stage and second-stage nozzles. The divider has an upstream surface to guide exhaust gas through the first-stage nozzle and an opposite downstream surface to guide exhaust gas flowing through the second-stage nozzle. An axially slidable tubular piston, disposed in the turbine housing, has a radially inner surface extending along the axial direction and a non-flat upstream end surface. The piston also includes a curved flow-guiding surface causing the exhaust gas to change direction. In a closed position, the piston abuts the divider to close the second-stage nozzle.

ADJUSTABLE-TRIM CENTRIFUGAL COMPRESSOR, AND TURBOCHARGER HAVING SAME

A centrifugal compressor for a turbocharger includes an inlet-adjustment mechanism in an air inlet for the compressor, operable to move between an open position and a closed position in the air inlet. The inlet-adjustment mechanism includes an axially elongated ring. In the open position, the radially outer surface of the ring is spaced from a tapering inner surface of the air inlet so that air can flow in an annular passage between the tapering surface and the ring. In the closed position, the ring abuts the tapering surface to close off the annular passage, whereby the effective inlet diameter is then defined by the inner diameter of the ring at its trailing edge. Movement of the inlet-adjustment mechanism from the open position to the closed position is effective to shift the compressor's surge line to lower flow rates.

Sector-Divided Turbine Assembly With Axial Piston Variable-Geometry Mechanism

A turbine (40) for a turbocharger (10) has a turbine housing (41) defining a generally annular chamber (43) surrounding a turbine wheel (44), the chamber receiving exhaust gas for driving the turbine wheel. The chamber has dividing walls (46) that divide the chamber into a plurality of angular sectors (43a,43b), each fed with exhaust gas separately from the other sector(s). (52,53) located radially inwardly of the sectors for guiding flow into the turbine wheel include at least dividing vanes (52) that form extensions of the dividing walls (46) so as to extend the sector-division of the exhaust gas flow path all the way to the trailing edges of the dividing vanes. An axially slidable piston (48) is disposed radially inwardly of the sectors, and radially overlaps with the dividing vanes (52). The vanes either are mounted on fixed structure and are received in slots (49) in the piston, or are mounted on the piston and received in slots in fixed structure.

Rotor with balancing features and balancing method

A rotor of a fluid machine includes a wheel with a plurality of blades. Furthermore, the rotor includes an inter-blade area defined circumferentially between a first blade and a second blade of the plurality of blades with respect to the axis of rotation. Moreover, the rotor includes a balancing mark on the wheel and within the inter-blade area. The balancing mark is elongate and has a first end and a second end. The first end and the second end are stepped axially into the inter-blade area. The balancing mark extends arcuately between the first end and the second end. The balancing mark has a depth that varies as the balancing mark extends arcuately between the first end and the second end. The balancing mark has a width that varies as the balancing mark extends arcuately between the first end and the second end.

ROTOR WITH BALANCING FEATURES AND BALANCING METHOD

A rotor for a fluid machine includes a wheel that is supported for rotation about an axis of rotation. The wheel includes a back wall with an outer rim edge. The rotor also includes a plurality of blades that are attached to the back wall and that are spaced apart about the axis of rotation. Moreover, the rotor includes an inter-blade area on the back wall between neighboring ones of the plurality of blades. Furthermore, the rotor includes a balancing feature that is included in the inter-blade area on the back wall. The balancing feature intersects and defines part of the outer rim edge.

Turbocharger and engine cylinder head assembly

A turbocharger and engine cylinder head assembly includes a center housing rotating assembly (CHRA) and an engine cylinder head defining a receptacle for receiving the CHRA, the engine cylinder head defining a compressor volute. A diffuser is defined for receiving and diffusing the compressed air from the compressor wheel and supplying the compressed air to the compressor volute. The assembly includes a cap formed separately from the engine cylinder head and removably secured to the engine cylinder head, the cap defining one wall of the diffuser. An opposite wall of the diffuser is defined either by the engine cylinder head or a portion of the center housing, depending on whether the CHRA slides into the receptacle compressor-wheel-first or turbine-wheel-first. The compressor volute can be located on a turbine side of the diffuser.

TURBOCHARGER WITH SLIDING PISTON ASSEMBLY

A turbocharger having a turbine housing defining a chamber for receiving exhaust gas, and a nozzle leading from the chamber. Exhaust gas flows from the nozzle through a turbine wheel in the chamber and changes direction from a radially inward direction in the nozzle to an axial direction downstream of the turbine wheel. A divider in the nozzle divides the nozzle into first-stage and second-stage nozzles. The divider has an upstream surface to guide exhaust gas through the first-stage nozzle and an opposite downstream surface to guide exhaust gas flowing through the second-stage nozzle. An axially slidable tubular piston, disposed in the turbine housing, has a radially inner surface extending along the axial direction and a non-flat upstream end surface. The piston also includes a curved flow-guiding surface causing the exhaust gas to change direction. In a closed position, the piston abuts the divider to close the second-stage nozzle.

Turbocharger with sliding piston, and having vanes and leakage dams

A turbocharger having a sliding piston for regulating exhaust gas flow into the turbine wheel includes a set of first vanes mounted on a fixed first wall of the turbine nozzle and projecting axially toward an opposite second wall of the nozzle, and/or a set of second vanes mounted on the end of the piston and projecting in an opposite axial direction toward the first wall of the nozzle. For the/each set of vanes, there are leakage dams formed on the wall that is adjacent the vane tips when the piston is closed. The leakage dams are closely adjacent the vane tips and discourage exhaust gas from leaking in a generally radial direction past the vane tips as the piston just begins to open from its fully closed position.

TURBOCHARGER HAVING ADJUSTABLE-TRIM CENTRIFUGAL COMPRESSOR INCLUDING DIVERGENT-WALL DIFFUSER

A centrifugal compressor for a turbocharger includes an inlet-adjustment mechanism in an air inlet for the compressor, operable to move between an open position and a closed position in the air inlet. Movement of the inlet-adjustment mechanism from the open position to the closed position is effective to shift the compressor's surge line to lower flow rates. The compressor includes a diffuser extending between an exducer of the compressor wheel and a volute for collecting pressurized air from the compressor. The diffuser is defined between first and second walls that diverge from each other in a radially outwardly direction through the diffuser. The divergent-wall diffuser enhances the shift of the surge line to lower flow rates when the inlet-adjustment mechanism is put in the closed position.

Turbine assembly with semi-divided nozzle and half-collar piston

A turbine assembly for a turbocharger includes a variable nozzle formed by a sliding half-collar piston. A first-stage nozzle has a plurality of first vanes supported by a first nozzle ring and extending axially therefrom. A second-stage nozzle has a second nozzle ring connected to the ends of the first vanes, and a plurality of second vanes extending axially therefrom. The piston regulates flow through the second-stage nozzle, while the first-stage nozzle remains open when the piston is fully closed. The second nozzle ring at least partially divides the first vanes from the second vanes. The half-collar piston includes recesses that receive the second vanes and only partially surround the girth of each second vane.

Adjustable-trim centrifugal compressor, and turbocharger having same

A centrifugal compressor for a turbocharger includes an inlet-adjustment mechanism in an air inlet for the compressor, operable to move between an open position and a closed position in the air inlet. The inlet-adjustment mechanism includes an axially elongated ring. In the open position, the radially outer surface of the ring is spaced from a tapering inner surface of the air inlet so that air can flow in an annular passage between the tapering surface and the ring. In the closed position, the ring abuts the tapering surface to close off the annular passage, whereby the effective inlet diameter is then defined by the inner diameter of the ring at its trailing edge. Movement of the inlet-adjustment mechanism from the open position to the closed position is effective to shift the compressor's surge line to lower flow rates.

ROTOR WITH BALANCING FEATURES AND BALANCING METHOD

A rotor of a fluid machine includes a wheel with a plurality of blades. Furthermore, the rotor includes an inter-blade area defined circumferentially between a first blade and a second blade of the plurality of blades with respect to the axis of rotation. Moreover, the rotor includes a balancing mark on the wheel and within the inter-blade area. The balancing mark is elongate and has a first end and a second end. The first end and the second end are stepped axially into the inter-blade area. The balancing mark extends arcuately between the first end and the second end. The balancing mark has a depth that varies as the balancing mark extends arcuately between the first end and the second end. The balancing mark has a width that varies as the balancing mark extends arcuately between the first end and the second end.

SYSTEM TO CATALOG AND SEARCH POINT-IN-TIME INSTANCES OF A FILE SYSTEM

A system to catalog and search point-in-tine instances of a file system is disclosed. A catalog engine takes backups of file data generated by a storage system and catalogs the backups of file data into a searchable catalog of independent metadata records. The metadata is represented by baseline structure and delta files. 1. A computer implemented method to store a catalog including directory metadata for a plurality of backups of file items at numerous points in time , the method comprising:storing the catalog on at least one tangible computer readable medium, wherein the catalog of directory metadata is tangibly embodied in the at least one tangible computer readable medium organized in records.2. The method of wherein the metadata records are stored in a logical sequence that is in a breadth first manner of the hierarchical structure.3. The method of claim 1 , wherein:the records are arranged as baseline files and deltas.4. The method of claim 1 , wherein the records are stored as independent structures.5. The method of claim 1 , wherein each record has a file structure that includes:a breadth first ordered set of entries or change records with a pointer to the directory;.a breadth first ordered set of directory moves;a sorted skip list of file and directory names with a pointer to the entry record; anda breadth first ordered set of directory paths, divided into compressed pages.6. The method of claim 1 , wherein the data that is acquired for cataloging includes one or more of: listing of the changed files claim 1 , a listing of changed file system pointers or modes claim 1 , a list of changed storage blocks claim 1 , a complete listing of all of the files on the storage system.7. The method of claim 3 , wherein in the event that a delta file is deleted a rollup is performed in the cataloged deltas to adapt the catalog.8. The method of claim 1 , further comprising processing the data acquired from a storage system and to correlate the primitive data acquired into ...

COMPRESSOR HOUSING ASSEMBLY FOR A TURBOCHARGER

A compressor housing assembly for a turbocharger can include a compressor housing shell that includes an axis for alignment with a rotational axis of a compressor wheel, a wall that includes features defined in part by radii with respect to the axis, and an edge that defines in part an inlet opening of a shroud port; and an insert that includes a shroud section and a noise suppressor section that define a recirculation port where the insert is axially located by the wall of the compressor housing shell, where an internal recirculation passage is defined in part by the insert and the wall, and where an edge of the shroud section (e.g., a lowermost edge) defines in part the inlet opening of the shroud port. Various other examples of devices, assemblies, systems, methods, etc., are also disclosed. 1. A compressor housing assembly for a turbocharger comprising:{'b': 442', '642', '842', '447', '647', '847', '443', '643', '843', '445', '845, 'a compressor housing shell (, , ) that comprises an axis for alignment with a rotational axis of a compressor wheel, a wall (, , ) that comprises features defined in part by radii with respect to the axis, and an edge (, , ) that defines in part an inlet opening of a shroud port (, ); and'}{'b': 402', '702', '804', '450', '750', '850', '470', '770', '870', '475', '775', '875', '402', '702', '804', '447', '647', '847', '442', '642', '842', '455', '855', '402', '702', '804', '447', '647', '847', '451', '771', '871', '450', '750', '850', '445', '845', '451', '771', '871', '402', '702', '804, 'an insert (, , ) that comprises a shroud section (, , ) and a noise suppressor section (, , ) that define a recirculation port (, , ) wherein the insert (, , ) is axially located by the wall (, , ) of the compressor housing shell (, , ), wherein an internal recirculation passage (, ) is defined in part by the insert (, , ) and the wall (, , ), wherein a lower edge (, , ) of the shroud section (, , ) defines in part the inlet opening of the shroud ...

Device for cold expansion of a through bore

The invention relates to a cold expansion device (36) for work hardening a through bore (34) in a turbine engine part (32), comprising at least one chuck (38) supporting a burnisher (40) and a means (41) for pushing the chuck (38) in an axial direction, and is characterised in that it comprises at least: —a tubular guide (42) configured to guide the burnisher (40) to the bore (34), —a first magnetic attachment means (51) arranged at a free end (44) of the chuck (38), —the burnisher (40), comprising a work surface (46) and an end (48) comprising second magnetic attachment means (49) complementary to the first magnetic attachment means (51), and in that the axial pushing means (41) is configured to push the burnisher through the bore (34) until it emerges from stud bore.

Flame-Resistant Fiber Blend, Yarn, and Fabric, and Method for Making Same

A fiber blend, a yarn spun from the fiber blend, and a fabric made from the yarn, wherein the fiber blend is a blend of staple fibers comprising non-FR cellulosic fibers, modacrylic fibers, and aramid fibers intimately blended together. The blend is such that the cellulosic fibers constitute at least about 45 wt. % of the fiber blend, a weight ratio of the modacrylic fibers to the cellulosic fibers is at least 0.8 but not exceeding 1.0, and the aramid fibers make up no more than 15 wt. % of the fiber blend. 1. A flame-resistant intimate fiber blend of staple fibers comprising non-FR cellulosic fibers , modacrylic fibers , and aramid fibers intimately blended together , wherein:the cellulosic fibers constitute at least about 45 wt. % of the fiber blend;a weight ratio of the modacrylic fibers to the cellulosic fibers is at least 0.8 but not exceeding 1.0; andthe aramid fibers make up no more than 15 wt. % of the fiber blend.2. The flame-resistant intimate fiber blend of claim 1 , wherein the aramid fibers constitute para-aramid fibers.3. The flame-resistant intimate fiber blend of claim 2 , wherein the non-FR cellulosic fibers comprise non-FR synthetic cellulosic fibers.4. The flame-resistant intimate fiber blend of claim 3 , wherein the blend comprises:about 45 wt. % to about 50 wt. % of the cellulosic fibers;about 38 wt. % to about 45 wt. % of the modacrylic fibers; andabout 10 wt. % to about 15 wt. % of the para-aramid fibers.5. The flame-resistant intimate fiber blend of claim 3 , wherein the blend comprises:about 45 wt. % to about 50 wt. % of the cellulosic fibers;about 38 wt. % to about 42 wt. % of the modacrylic fibers; andabout 10 wt. % to about 15 wt. % of the para-aramid fibers.6. A flame-resistant fabric constructed from yarns spun from the intimate fiber blend of claim 1 , the fabric having a weight of about 4.0 oz./yd.to about 10.5 oz./yd..7. The flame-resistant fabric of claim 6 , having a weight of about 6.5 oz./yd.to about 9.0 oz./yd..8. The flame- ...

Treatment process for a centrifugal compressor wheel to extend low-cycle fatigue life

A process for treating a centrifugal compressor wheel includes a combination of cold expansion of at least part of the bore of the wheel to induce residual compressive stresses in a region around the bore, and surface peening at least parts of the compressor wheel such as the back disk and portions of the blades.

A process control method and apparatus

A Process Control Framework is disclosed as an environment in which processes and their products can be formally defined as objects in a machine readable form, called a Process Control File. The Process Control File is used by a Process Control to determine the next action to be performed on the set of objects selected by the user. Where the action is machine executable, the Process Control is able to actually invoke the system command itself to perform the task. This gives rise to a unified user interface where the user can work exclusively with high level actions to Process Control File objects instead of having to remember the specific system level commands. Further, the objects have attributes associated therewith which are stored separate from the objects themselves. This allows for a single object to be accessed and used by multiple processes, both internal and external to the disclosed Process Control Framework. The object-oriented approach allows for access privileges for users, roles, and access rights for object classes to be defined and maintained by sending messages to retrieve or set the properties of these object classes. An object-oriented user paradigm for viewing and manipulating data and tools is reinforced with a true object-oriented system managing the data and tools.

Flame-resistant fiber blend, yarn, and fabric, and method for making same

A fiber blend, a yarn spun from the fiber blend, and a fabric made from the yarn, wherein the fiber blend is a blend of staple fibers comprising non-FR cellulosic fibers, modacrylic fibers, and aramid fibers intimately blended together. The blend is such that the cellulosic fibers constitute at least about 45 wt. % of the fiber blend, a weight ratio of the modacrylic fibers to the cellulosic fibers is at least 0.8 but not exceeding 1.0, and the aramid fibers make up no more than 15 wt. % of the fiber blend.

Tree harvester

Variable diffuser with movable wall

Dispositif pour l’expansion a froid d’un perçage debouchant

L’invention concerne un dispositif (36) d’expansion à froid pour l’écrouissage d’un perçage (34) débouchant d’une pièce (32) de turbomachine, comportant au moins un mandrin (38) porteur d’un brunissoir (40) et un moyen (41) de poussée axiale dudit mandrin (38) , caractérisé en ce qu’il comporte au moins : - un guide tubulaire (42), configuré pour guider le brunissoir (40) jusqu’au perçage (34), - un premier moyen de fixation magnétique (51) agencé à une extrémité libre (44) du mandrin (38), - le brunissoir (40), comportant une surface de travail (46) et une extrémité (48) comportant un second moyen de fixation magnétique (49), complémentaire du premier moyen de fixation magnétique (51), et en ce que le moyen de poussée axiale (41) est configuré pour pousser le brunissoir au travers du perçage (34) jusqu’à ce qu’il en ressorte. Figure pour l'abrégé : Figure 3.

Rotor with balancing features and balancing method

A rotor 102 of a fluid machine 112 includes a wheel 113 with a plurality of blades 166. Furthermore, the rotor includes an inter-blade area 168 defined circumferentially between a first blade 141 and a second blade 142 of the plurality of blades with respect to the axis of rotation. Moreover, the rotor includes a balancing mark 172 on the wheel 113 and within the inter-blade area 168. The balancing mark 172 is elongate and has a first end 174 and a second end 176. The first end and the second end are stepped axially into the inter-blade area. The balancing mark 172 extends arcuately between the first end and the second end. The balancing mark has a depth 190 that varies as the balancing mark extends arcuately between the first end and the second end. The balancing mark has a width 180 that varies as the balancing mark extends arcuately between the first end and the second end.

Rotor with balancing features and balancing method

Active surge supression through dynamically controlled actuated turboshaft speed

Methods and systems for controlling a turbocharger associated with an engine. The turbocharger is operated in a region of operation creating potential surge conditions, but surge is avoided by varying the speed of the turbocharger in accordance with speed parameters determined by observing a resonant frequency of surge in the system.

Turbocharger cartridge and engine cylinder head assembly

Hinged gutter

Input/output system

Vorrichtung zum transportieren von baumstaemmen, langholz oder dergleichen

Hinged gutter

Turbocharger cartridge, bypass, and engine cylinder head assembly

An turbocharger cartridge and engine cylinder head assembly includes a center housing rotating assembly, which comprises a center housing, bearings housed in the center housing, a shaft rotatably supported in the bearings, and compressor and turbine wheels affixed to opposite ends of the shaft; an engine cylinder head and a housing member formed together as a one-piece integral structure, wherein the housing member defines a compressor volute that receives compressed air from the compressor wheel, a turbine volute for receiving exhaust gas from the engine, a turbine nozzle for directing exhaust gas from the turbine volute into the turbine wheel, and a turbine contour; a compressor contour plug that defines an axial inlet for the compressor and a compressor contour; and a wastegate unit operable for allowing exhaust gas to bypass the turbine wheel when the wastegate unit is open and preventing exhaust gas from bypassing the turbine wheel when the wastegate unit is closed.

Turbocharger cartridge, bypass, and engine cylinder head assembly

Turbocharger cartridge, bypass, and engine cylinder head assembly

An turbocharger cartridge and engine cylinder head assembly includes a center housing rotating assembly, which comprises a center housing, bearings housed in the center housing, a shaft rotatably supported in the bearings, and compressor and turbine wheels affixed to opposite ends of the shaft; an engine cylinder head and a housing member formed together as a one-piece integral structure, wherein the housing member defines a compressor volute that receives compressed air from the compressor wheel, a turbine volute for receiving exhaust gas from the engine, a turbine nozzle for directing exhaust gas from the turbine volute into the turbine wheel, and a turbine contour; a compressor contour plug that defines an axial inlet for the compressor and a compressor contour; and a wastegate unit operable for allowing exhaust gas to bypass the turbine wheel when the wastegate unit is open and preventing exhaust gas from bypassing the turbine wheel when the wastegate unit is closed.

Dispositif pour l'expansion a froid d'un perçage debouchant

L'invention concerne un dispositif (36) d'expansion à froid pour l 'écrouissage d'un perçage (34) débouchant d'une pièce (32) de turbomachine, comportant au moins un mandrin (38) porteur d'un brunissoir (40) et un moyen (41) de poussée axiale dudit mandrin (38), caractérisé en ce qu'il comporte au moins : - un guide tubulaire (42), configuré pour guider le brunissoir (40) jusqu'au perçage (34), - un premier moyen de fixation magnétique (51) agencé à une extrémité libre (44) du mandrin (38), - le brunissoir (40), comportant une surface de travail (46) et une extrémité (48) comportant un second moyen de fixation magnétique (49), complémentaire du premier moyen de fixation magnétique (51), et en ce que le moyen de poussée axiale (41) est configuré pour pousser le brunissoir au travers du perçage (34) jusqu'à ce qu'il en ressorte.

Device and method for cold expansion of through bore

The invention relates to a cold expansion device (36) for work hardening a through bore (34) in a turbine engine part (32), comprising at least one chuck (38) supporting a burnisher (40) and a means (41) for pushing the chuck (38) in an axial direction, and is characterised in that it comprises at least: —a tubular guide (42) configured to guide the burnisher (40) to the bore (34), —a first magnetic attachment means (51) arranged at a free end (44) of the chuck (38), —the burnisher (40), comprising a work surface (46) and an end (48) comprising second magnetic attachment means (49) complementary to the first magnetic attachment means (51), and in that the axial pushing means (41) is configured to push the burnisher through the bore (34) until it emerges from stud bore.

Turbocharger cartridge and engine cylinder head assembly

An turbocharger cartridge and engine cylinder head assembly includes a turbocharger cartridge that includes some but not all of the components of a turbocharger, while the engine cylinder head provides the components of the turbocharger that are not included in the cartridge. The cartridge includes a center housing rotating assembly having a shaft that joins a turbine wheel to a compressor wheel, the shaft passing through bearings housed in the center housing. The engine cylinder head defines a receptacle that receives the cartridge. The head also defines a diffuser and volute for the compressor, and a turbine volute. The cartridge defines a turbine nozzle and turbine contour, and further includes a wastegate unit as a part of the cartridge.

Turbocharger cartridge and engine cylinder head assembly