Patent application number | Description | Published |
20140078515 | OPTICAL GRID ENHANCEMENT FOR IMPROVED MOTOR LOCATION - Methods for performing a scheme that results in a refined measurement pattern within an optical grid are provided. Physically adjusting spacing of elements within an optical grid to achieve enhanced resolution is historically unfeasible, as reduction of the spacing causes light sensors of the optical grid to pick up false signals when reading light beams. Technology introduced by the present invention generates a virtual reduced spacing of the elements within the optical grid by using two signals that are slightly different. These slightly different signals can accomplish, at least, quarter-grid spacing resolution within the optical grid. Additionally, the enhanced resolution derived from the virtual reduced spacing is employed to govern movement of a motor. The motor movement is in response to one or more changes of direction such that the motor is operating in its linear range. Advantageously, the virtual reduced spacing allows for substantial movement in a non-linear phase, while only limited movement in a linear phase is necessary to locate accurately a target within the optical grid. | 03-20-2014 |
20150178537 | OPTICAL GRID ENHANCEMENT FOR IMPROVED MOTOR LOCATION - Methods for performing a scheme that results in a refined measurement pattern within an optical grid are provided. Physically adjusting spacing of elements within an optical grid to achieve enhanced resolution is historically unfeasible, as reduction of the spacing causes light sensors of the optical grid to pick up false signals when reading light beams. Technology introduced by the present invention generates a virtual reduced spacing of the elements within the optical grid by using two signals that are slightly different. These slightly different signals can accomplish, at least, quarter-grid spacing resolution within the optical grid. Additionally, the enhanced resolution derived from the virtual reduced spacing is employed to govern movement of a motor. The motor movement is in response to one or more changes of direction such that the motor is operating in its linear range. Advantageously, the virtual reduced spacing allows for substantial movement in a non-linear phase, while only limited movement in a linear phase is necessary to locate accurately a target within the optical grid. | 06-25-2015 |
Patent application number | Description | Published |
20160084744 | OLIGOCYCLIC FATIGUE OR OLIGOCYCLIC AND POLYCYCLIC FATIGUE TEST RIG - Low-cycle, and optionally combined low-cycle and high-cycle, fatigue test rig, for reproducing bearing of turbine engine parts, comprising a support member which is fixed to a frame and defines at least one bearing surface, and a test piece which is connected to traction means for loading the test piece so that it bears against the or each bearing surface of the member, the or each bearing surface being supported by an element which is mounted so as to rotate about a first axis on the support member, and the test piece being connected to the traction means by means for articulation around a second axis which is substantially perpendicular to the first axis, the rig further comprising means for adjusting and locking the element and the test piece in positions around the above-mentioned axes wherein. | 03-24-2016 |
20160109344 | OPTIMISATION OF A CYCLE FATIGUE OR CYCLE AND HIGH-CYCLE FATIGUE TEST RIG - A method for optimising a cycle and optionally high-cycle fatigue test rig, said test being intended to reproduce a support for turbomachine parts, wherein it comprises the steps consisting of determining variable geometric parameters of the support member and/or of the workpiece of the rig, in addition to ranges of variation of these parameters, determining at least one aim to be achieved, a variation in the values of at least a part of the abovementioned parameters having an influence on this aim, modifying one or a plurality of the values of the abovementioned parameters, in the respective ranges of same, and determining those that make it possible to achieve the aim, and producing or modifying a support member and/or a workpiece on the basis of the optimised parameters. | 04-21-2016 |
Patent application number | Description | Published |
20100196145 | TURBINE ASSEMBLY FOR AN EXHAUST GAS-DRIVEN TURBOCHARGER HAVING A VARIABLE NOZZLE - A turbocharger with an exhaust gas-driven turbine includes a variable nozzle formed by a stator supporting fixed vanes and defining bypass openings, and a rotor supporting movable vanes and defining bypass channels. Each fixed vane overlaps with a movable vane by a varying extent dependent on rotational position of the rotor. In a fully open position of the rotor, the movable vanes have a maximum extent of overlap with the fixed vanes, and the bypass channels align with the bypass openings so that some of the exhaust gas flows through the aligned bypass openings and channels, bypassing the turbine wheel. | 08-05-2010 |
20120234002 | Wastegates and Wastegate Components - A turbine housing includes a wastegate chamber with a wastegate opening; and a wastegate disposed in the wastegate chamber where the wastegate includes a plug configured to plug the wastegate opening and where the plug includes a surface; a shaft configured for receipt by a bore in a wall of the wastegate chamber; and a rotatable arm extending from the shaft where the arm has a surface configured for contacting the surface of the plug for a closed orientation of the plug with respect to the wastegate opening to transmit force from the arm more centrally to the plug. Various other examples of devices, assemblies, systems, methods, etc., are also disclosed. | 09-20-2012 |
20150020523 | Wastegates and Wastegate Components - A wastegate assembly can include a plug configured to plug a wastegate opening where the plug includes a concave, at least partially spherical surface; a shaft configured for receipt by a bore in a wastegate chamber; and a rotatable arm extending from the shaft where the arm includes a convex, at least partially spherical surface configured for contacting the concave, at least partially spherical surface of the plug for a closed orientation of the plug with respect to the wastegate opening. | 01-22-2015 |
Patent application number | Description | Published |
20100204899 | SYSTEM, METHOD, APPARATUS AND COMPUTER PROGRAM PRODUCT FOR PROVIDING IMPROVED ENGINE CONTROL - An apparatus for providing an antisurge operating mode for a turbocharged engine may include a processor. The processor may be configured to receive indications of engine operating parameters and engine accelerator pedal position, determine whether the received indications correspond to antisurge mode activation conditions, and, in response to a determination that the received indications correspond to antisurge mode activation conditions, initiate control of selected engine components by directing the selected engine components to operate based on stored engine operating parameters recorded a predetermined time prior to the determination. | 08-12-2010 |
20110099998 | TURBINE ASSEMBLY FOR A TURBOCHARGER, HAVING TWO ASYMMETRIC VOLUTES THAT ARE SEQUENTIALLY ACTIVATED, AND ASSOCIATED METHOD - A turbine assembly for an exhaust gas turbocharger has separate first and second volutes that are sequentially activated via a valve that receives exhaust gases from an engine. In a first position of the valve, only the first volute receives exhaust gas; in a second position, both volutes receive exhaust gases. In a third position, a bypass passage is also opened so that some exhaust gas bypasses the turbine wheel. Unlike conventional twin-scroll turbines, each volute receives exhaust gases from all engine cylinders, and the first volute feeds gas into the B-width portion of the wheel, while the second volute feeds gas into the wheel after the contour portion. | 05-05-2011 |
Patent application number | Description | Published |
20080271449 | 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. | 11-06-2008 |
20090041573 | 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. | 02-12-2009 |
20090041577 | VARIABLE-GEOMETRY TURBOCHARGER WITH ASYMMETRIC DIVIDED VOLUTE FOR ENGINE EXHAUST GAS PULSE OPTIMIZATION. - A turbine assembly for a variable-geometry turbocharger includes a turbine housing defining a divided volute having first and second scrolls, wherein the first scroll has a substantially smaller volume than the second scroll. The first scroll feeds exhaust gas to a first portion of a turbine wheel upstream of the throat of the wheel, while the second scroll feeds gas to a second portion of the wheel at least part of which is downstream of the throat. Flow from the second scroll is regulated by a sliding piston. The first scroll can be optimized for low-flow conditions such that the turbocharger can operate effectively like a small fixed-geometry turbocharger when the piston is closed. The turbine housing defines an inlet that is divided by a dividing wall into two portions respectively feeding gas to the two scrolls, a leading edge of the dividing wall being downstream of the inlet mouth. | 02-12-2009 |
20120148386 | Turbocharger With Divided Turbine Housing and Annular Rotary Bypass Valve for the Turbine - A turbocharger includes a turbine wheel mounted within a turbine housing and connected to a compressor wheel by a shaft. The turbine housing defines an exhaust gas inlet connected to a divided volute that surrounds the turbine wheel, and an axial bore through which exhaust gas that has passed through the turbine wheel is discharged from the turbine housing. The turbine housing further defines a pair of concentric annular bypass passages surrounding the bore and arranged to allow exhaust gas to bypass the turbine wheel as two separate bypass streams. An annular bypass valve is disposed in the bypass passage. The bypass valve comprises a fixed annular valve seat and a rotary annular valve member arranged coaxially with the valve seat. The valve member is disposed against the valve seat and is rotatable about the axis for selectively varying a degree of alignment between respective orifices in the valve seat and valve member. | 06-14-2012 |
20130195639 | Turbine Assembly For a Turbocharger, Having Two Asymmetric Volutes That Are Sequentially Activated, And Associated Method - A turbine assembly for an exhaust gas turbocharger has separate first and second volutes that are sequentially activated via a valve that receives exhaust gases from an engine. In a first position of the valve, only the first volute receives exhaust gas; in a second position, both volutes receive exhaust gases. In a third position, a bypass passage is also opened so that some exhaust gas bypasses the turbine wheel. Unlike conventional twin-scroll turbines, each volute receives exhaust gases from all engine cylinders, and the first volute feeds gas into the B-width portion of the wheel, while the second volute feeds gas into the wheel after the contour portion. | 08-01-2013 |
20130247565 | 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. | 09-26-2013 |
20130291540 | TURBOCHARGER AND ENGINE CYLINDER HEAD ASSEMBLY - An engine cylinder head and turbocharger assembly includes a turbocharger having a turbine housing, wherein part of the turbine housing is integrated into a casting of the engine cylinder head. The turbocharger is arranged with respect to the engine cylinder head such that the rotational axis of the turbocharger is transverse to the engine axis along which the engine cylinders are spaced. A compressor housing of the turbocharger is oriented toward an air intake side of the engine cylinder head, and the turbine housing is oriented toward an exhaust side of the engine cylinder head. | 11-07-2013 |