Patents Issued in February 22, 2018
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Publication number: 20180051561Abstract: A cutting assembly for a rock excavation machine having a frame includes a boom and a cutting device supported on the boom. The boom includes a first portion and a second portion, the first portion supported for pivotable movement relative to the frame. In some embodiments, the first portion includes a first structure extending along a longitudinal base axis and a second structure moveable relative to the first portion in a direction parallel to the longitudinal base axis, and at least one bearing supports the second portion for movement relative to the first portion. In some embodiments, the second portion is pivotably coupled to the first portion by a universal joint, and a suspension system including a plurality of biasing members may be coupled between the first portion and the second portion.Type: ApplicationFiled: August 18, 2017Publication date: February 22, 2018Inventors: Nagy Daher, Richard Boyd, Joaquim Antonio Soares de Sousa
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Publication number: 20180051562Abstract: A cutting assembly for a rock excavation machine including a frame. The cutting assembly includes a boom supported on the frame and a cutting device. In some aspects, the boom includes a first portion and a second portion, and the first portion includes a first structure and a second structure slidable relative to the first structure. The second portion includes a first member pivotably coupled to the second structure, and a second member pivotably coupled to the first member. The cutting device is supported on the second member. In some aspects, a material handling device is supported independently of the boom and movable between a retracted position and an extended position independent of the boom.Type: ApplicationFiled: August 18, 2017Publication date: February 22, 2018Inventors: Nagy Daher, Richard Boyd, Edward Bagnall, Stuart Reeves
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Publication number: 20180051563Abstract: An internal combustion engine according to the invention comprises at least two engine blocks which are coupled to one another and each of which includes at least two cylinders, each cylinder being connected to a common drive shaft via a transmission and a clutch. If there is a problem with one engine block, same can be disconnected from the drive shaft so that the engine can continue to operate by means of the other engine block.Type: ApplicationFiled: September 30, 2015Publication date: February 22, 2018Inventor: Johann SCHWÖLLER
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Publication number: 20180051564Abstract: The invention relates to a pump device for pumping a liquid, comprising a hydraulics housing (12, 212), in which a pump ring (14, 214), a pump ring support (16, 216) and an eccentric (18), which can be driven by a shaft (20), are accommodated. The hydraulics housing (12, 212) has an annular portion (22, 222) and a first and a second lateral section (24, 26, 224), the two lateral sections (24, 26,224) being arranged opposite each other. The pump ring (14, 214) is mounted between the two lateral sections (24, 26, 224) of the hydraulics housing (12, 212) at least in some portions. On a side facing away from the pump ring support (16, 216), two first projections (28, 228), which run in the axial direction of the shaft (20), are each in contact with one of the two lateral sections (24, 26, 224).Type: ApplicationFiled: March 31, 2016Publication date: February 22, 2018Applicant: EBM-PAPST ST. GEORGEN GmbH & Co. KGInventors: Markus BRAXMAIER, Hassan GHODSI-KHAMENEH, Daniel HAUER, Juergen HERR, Marc JEUCK, Gerhard KUHNERT, Wolfgang LAUFER, Mario STAIGER
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Publication number: 20180051565Abstract: An apparatus and method for cooling an engine component, such as an airfoil, including a wall to separate a hot flow from a cooling fluid flow. The component can include at least one trench disposed in a hot surface. The trench can be fed with the cooling fluid flow to cool the engine component along the hot surface with the cooling fluid flow.Type: ApplicationFiled: August 16, 2016Publication date: February 22, 2018Inventor: Ronald Scott Bunker
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Publication number: 20180051566Abstract: An apparatus and method for cooling an engine airfoil, including a wall bounding an interior extending axially between a leading edge and a trailing edge and radially between a root and a tip. A cooling circuit it located within the interior having full-length ribs, partial-length ribs, passages, or channels can define a cooling circuit for providing a flow of cooling fluid through the airfoil. The tip can include a tip cap forming a portion of the cooling circuit.Type: ApplicationFiled: August 16, 2016Publication date: February 22, 2018Inventor: Ronald Scott Bunker
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Publication number: 20180051567Abstract: An engine component, such as an airfoil, for a turbine engine having a hole, which can be a film hole, within the outer wall of the engine component where cooling air moves from an interior cavity through the hole to an outer surface of the engine component providing a cooling film on the outer surface of the engine component.Type: ApplicationFiled: August 16, 2016Publication date: February 22, 2018Inventor: Ronald Scott Bunker
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Publication number: 20180051568Abstract: An apparatus and method for cooling an engine component, including an outer wall separating a hot fluid flow from a cooling fluid flow, using the cooling fluid flow to cool the engine component. A region in the component can include a plurality of film holes with a porous material to meter the flow of cooling fluid provided from the engine component.Type: ApplicationFiled: August 16, 2016Publication date: February 22, 2018Inventor: Ronald Scott Bunker
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Publication number: 20180051569Abstract: An apparatus and method for cooling an engine component such as a turbine engine airfoil, including a wall bounding an interior extending axially between a leading edge and a trailing edge and radially between a root and a tip. A cooling circuit it located within the interior of the airfoil can include a porous section having a porosity permitting a volume of fluid, such as air, to pass through the porous section.Type: ApplicationFiled: August 16, 2016Publication date: February 22, 2018Inventor: Ronald Scott Bunker
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Publication number: 20180051570Abstract: A gas turbine blade according to an embodiment of the present invention includes a turbine blade provided in a gas turbine; and a plurality of film coolers formed in a section from a leading edge to a trailing edge of the turbine blade, in which the film cooler includes a cooling channel through which cooling air is introduced and formed in an oval shape; and an outlet through which the cooling air passing through the cooling channel is discharged and extending from an extended end of the cooling channel toward an outer side thereof and formed in an oval shape.Type: ApplicationFiled: August 16, 2017Publication date: February 22, 2018Inventors: Ki Don Lee, Seok Beom Kim
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Publication number: 20180051571Abstract: An apparatus and method for cooling an engine airfoil, including a wall bounding an interior extending axially between a leading edge and a trailing edge and radially between a root and a tip. A cooling circuit it located within the interior having full-length ribs and partial-length ribs to define the cooling circuit, with the partial length ribs defining a turn.Type: ApplicationFiled: August 16, 2016Publication date: February 22, 2018Inventor: Ronald Scott Bunker
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Publication number: 20180051572Abstract: A method and apparatus for an airfoil in a gas turbine engine can include an outer surface bounding an interior and spanning from a root to a tip. At least one flow channel can be defined among one or more full-length and partial-length ribs to further define an air flow channel within the airfoil. The air flow channel can have at least one tip turn at the partial-length rib, having at least one hole, for example a film hole, in a portion of the tip.Type: ApplicationFiled: August 16, 2016Publication date: February 22, 2018Inventor: James Michael Hoffman
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Publication number: 20180051573Abstract: A cooling circuit for a multi-wall blade according to an embodiment includes: a pressure side cavity with a surface adjacent a pressure side of the multi-wall blade; a suction side cavity with a surface adjacent a suction side of the multi-wall blade; a central cavity disposed between the pressure side and suction side cavities, the central cavity including no surfaces adjacent the pressure and suction sides of the multi-wall blade; a first leading edge cavity with surfaces adjacent the pressure and suction sides of the multi-wall blade, the first leading edge cavity located forward of the central cavity; a second leading edge cavity located forward of the first leading edge cavity; at least one impingement opening for fluidly coupling the first leading edge cavity to the second leading edge cavity; and at least one channel for fluidly coupling the central cavity to a tip of the multi-wall blade.Type: ApplicationFiled: August 18, 2016Publication date: February 22, 2018Inventors: David Wayne Weber, Lana Maria Osusky
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Publication number: 20180051574Abstract: A cooling circuit according to an embodiment includes: a cooling circuit for a multi-wall blade, the cooling circuit including: a pressure side cavity with a surface adjacent a pressure side of the multi-wall blade; a suction side cavity with a surface adjacent a suction side of the multi-wall blade; a central cavity disposed between the pressure side and suction side cavities, the central cavity including no surfaces adjacent the pressure and suction sides of the multi-wall blade; a first leading edge cavity with surfaces adjacent the pressure and suction sides of the multi-wall blade; and at least one impingement opening for fluidly coupling the leading edge cavity with a second leading edge cavity.Type: ApplicationFiled: August 18, 2016Publication date: February 22, 2018Inventors: David Wayne Weber, Gregory Thomas Foster, Lana Maria Osusky
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Publication number: 20180051575Abstract: A cooling circuit according to an embodiment includes: a cooling circuit for a multi-wall blade, the cooling circuit including: a pressure side cavity with a surface adjacent a pressure side of the multi-wall blade; a suction side cavity with a surface adjacent a suction side of the multi-wall blade; a central cavity disposed between the pressure side and suction side cavities, the central cavity including no surfaces adjacent the pressure and suction sides of the multi-wall blade; a first leading edge cavity with surfaces adjacent the pressure and suction sides of the multi-wall blade; and at least one impingement opening for fluidly coupling the first leading edge cavity with a second leading edge cavity.Type: ApplicationFiled: August 18, 2016Publication date: February 22, 2018Inventors: David Wayne Weber, Gregory Thomas Foster, Michelle Jessica Iduate, Lana Maria Osusky
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Publication number: 20180051576Abstract: A cooling circuit for a multi-wall blade according to an embodiment includes: a pressure side cavity with a surface adjacent a pressure side of the multi-wall blade; a suction side cavity with a surface adjacent a suction side of the multi-wall blade; a first leading edge cavity with surfaces adjacent the pressure and suction sides of the multi-wall blade, the first leading edge cavity located forward of the pressure and suction side cavities; and a second leading edge cavity with surfaces adjacent the pressure and suction sides of the multi-wall blade, the second leading edge cavity located forward of the first leading edge cavity.Type: ApplicationFiled: August 18, 2016Publication date: February 22, 2018Inventors: David Wayne Weber, Lana Maria Osusky
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Publication number: 20180051577Abstract: A cooling system for a turbomachine blade including a multi-wall blade and a platform. A cooling circuit for the multi-wall blade includes: a central cavity and a plurality of outer cavities, wherein the central cavity comprises an intermediate passage of the cooling circuit, and wherein a flow of cooling air is fed into the cooling circuit through a first outer cavity of the plurality of outer cavities; and a connection for fluidly connecting a second outer cavity of the plurality of outer cavities to a platform core of the platform, the flow of cooling air passing through the connection into the platform core of the platform.Type: ApplicationFiled: August 18, 2016Publication date: February 22, 2018Inventors: Brendon James Leary, Elisabeth Kraus Black, Michelle Jessica Iduate, David Wayne Weber
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Publication number: 20180051578Abstract: A gas turbine transition duct includes: an inner tubular body, defining a transition channel and having a first upstream end and a first downstream end for coupling to a can combustor and to a turbine section of a gas turbine assembly, respectively; an outer tubular body, arranged around the inner tubular body and having a second upstream end at the first upstream end of the inner tubular body and a second downstream end at the first downstream end of the inner tubular body; wherein a convective cooling channel is defined between the inner tubular body and the outer tubular body, the convective cooling channel having an inlet between the first downstream end and the second downstream end; and wherein the outer tubular body is continuous between the second upstream end and the second downstream end.Type: ApplicationFiled: August 18, 2017Publication date: February 22, 2018Applicant: ANSALDO ENERGIA SWITZERLAND AGInventors: Paul MARLOW, Michael MAURER, Dalibor VRBETIC
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Publication number: 20180051579Abstract: A stator assembly for a gas turbine engine includes an arcuate shroud including a shroud pocket, the shroud pocket having a shroud slot extending therethrough. A stator vane is insertable into the shroud pocket and includes a vane slot extending therethrough. A strap extends through the shroud slot and the vane slot to retain the vane to the shroud. A gas turbine engine includes a combustor and a stator and case assembly in in fluid communication with the combustor. The stator and case assembly includes a case defining a working fluid flowpath for the gas turbine engine and a stator assembly secured at the case.Type: ApplicationFiled: August 18, 2016Publication date: February 22, 2018Inventors: Dene A. Montgomery, Colin G. Amadon
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Publication number: 20180051580Abstract: An apparatus relating to a rim seal for turbine engine comprising a wing and discourager extending into a cavity to form a labyrinth fluid path. The wing and discourager can each include a radial extension. Cooling air can pass through the rim seal along the labyrinth fluid path to resist the ingestion of hot gas from a mainstream flow.Type: ApplicationFiled: August 16, 2016Publication date: February 22, 2018Inventor: Ronald Scott Bunker
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Publication number: 20180051581Abstract: A turbine ring assembly includes both a plurality of CMC ring sectors forming a turbine ring and a ring support structure, each ring sector having a portion forming an annular base that presents an outside face in the radial direction of the turbine ring, with first and second attachment tabs projecting therefrom in the radial direction, each attachment tab presenting an end that is free, each ring sector having third and fourth attachment tabs, each extending in the axial direction of the turbine ring between the free end of the first attachment tab and the free end of the second attachment tab. Each ring sector is fastened to the ring support structure by a bolt having a bolt head bearing against the ring support structure and a thread co-operating with tapping formed in a plate, the plate co-operating with the third and fourth attachment tabs.Type: ApplicationFiled: August 18, 2017Publication date: February 22, 2018Inventors: Lucien Henri Jacques QUENNEHEN, Sébastien Serge Francis CONGRATEL, Clément Jean Pierre DUFFAU, Nicolas Paul TABLEAU
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Publication number: 20180051582Abstract: A brush seal has bristles with a free end sealing against a radially inward surface of a stationary component. The bristles are angled axially 15 degrees to 70 degrees, and circumferentially at an angle that is less than the axial angle. A retaining plate extends radially outward from the rotating component, and supports the bristles from centrifugal loading in an operative state of a turbomachine. A bristle shield extends radially outward along a length of the bristles, such that the bristle shield is configured to shield the bristles from flow during an operative state of the turbomachine. The bristles are located between the retaining plate and the bristle shield. A circumferential groove has a downstream side and an upstream side, and a side plate is attached to the upstream side. The fixed end of the bristles is attached to the upstream side of the groove by the side plate.Type: ApplicationFiled: August 16, 2016Publication date: February 22, 2018Applicant: General Electric CompanyInventors: Xiaoqing Zheng, Gene David Palmer, Michael Dennis Mack, David Bruce Knorr, Jason Lyn Bowers
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Publication number: 20180051583Abstract: Aspects of the disclosure are directed to an active clearance control system for an engine of an aircraft, comprising: a collector that is configured to receive a cooling fluid, at least two manifolds coupled to the collector, where a first of the manifolds is configured to receive at least a first portion of the cooling fluid from the collector and a second of the manifolds is configured to receive at least a second portion of the cooling fluid from the collector, and an insert coupled to the collector and the manifolds, where the insert is configured to seal an interface between the collector and the at least two manifolds over an operating range of the engine.Type: ApplicationFiled: August 18, 2016Publication date: February 22, 2018Inventors: David R. Griffin, Joseph E. Barker, James P. Chrisikos, Graham R. Philbrick
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Publication number: 20180051584Abstract: The invention concerns land-based gas turbine plants with a two-spool gas turbine arrangement for generating electrical power. The invention comprises two spools. The first spool comprises a first shaft, a first compressor and a first turbine. The second spool comprises at least a second shaft and a second turbine. The shafts of the first and the second spools are independently rotatable of each other. The invention further comprises the first generator and the second generator having nominally substantially equal power ratings, and the rotating parts of the first generator and the second generator have nominally substantially equal rotational speed ratings, and at least 60 percent of a total output power supplied to said load in a form of electrical and rotational power is generated by the two electrical generators.Type: ApplicationFiled: March 23, 2016Publication date: February 22, 2018Applicant: AURELIA TURBINES OYInventors: Matti Malkamäki, Jari Backman, Juha Honkatukia, Ahti Jaatinen-Värri
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Publication number: 20180051585Abstract: A system and method for detecting a shaft break in a turbofan gas turbine engine includes sensing fan rotational speed and sensing turbine engine rotational speed. A rate of change of rotational speed difference between the sensed fan rotational speed and the sensed turbine engine rotational speed is determined in a processor, and a determination that a shaft break has occurred is made in the processor based at least in part on the rate of change of the rotational speed difference.Type: ApplicationFiled: August 16, 2016Publication date: February 22, 2018Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Yufei Xiong, Ronnie Haugland, Scot Coffey
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Publication number: 20180051586Abstract: A system for inspecting spray nozzles includes a nozzle operatively connected to a source of pressurized liquid for issuing a spray from the nozzle. The system also includes a sensor positioned to detect frequencies of resonant modes in the spray. The nozzle and sensor can each be mounted to a spray test booth. A method of inspecting a spray nozzle includes issuing a liquid from a spray nozzle as a spray and using a sensor to detect frequencies of resonant modes in the spray. The sensor can include a diaphragm and detecting frequencies can include impinging at least some of the spray on the diaphragm, and monitoring vibrations of the diaphragm.Type: ApplicationFiled: August 18, 2016Publication date: February 22, 2018Inventors: Lev A. Prociw, Jason A. Ryon
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Publication number: 20180051587Abstract: A controller for a gas turbine engine is disclosed. The controller is configured to measure a first rotational speed of a shaft of the engine at a first end of the shaft and to measure a second rotational speed of the shaft at a second end. The first end may be coupled to a turbine of the engine and the second end may be coupled to a compressor of the engine. The controller is further configured to determine a shaft twist angle as a function of the first rotational speed and the second rotational speed, determine whether the shaft twist angle is within a predetermined shaft health monitoring range, and record the shaft twist angle. The controller may be configured to generate a maintenance alert in response to determining that the shaft twist angle is within the predetermined shaft health monitoring range.Type: ApplicationFiled: August 22, 2016Publication date: February 22, 2018Inventor: William S. Fletcher
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Publication number: 20180051588Abstract: In one embodiment, a method includes sensing first operations for one or more turbine systems in a fleet of turbine systems via a plurality of sensors disposed in the one or more turbine systems before a first wash operation. The method further includes sensing second operations for the one or more turbine systems via the one or more sensors after the water wash operation. The method also includes deriving at least one forecasting model based on the sensing first operations and the sensing second operations, wherein the at least one forecasting model is configured to predict a performance of a turbine system of the one or more turbine systems. The method additionally includes applying the at least one forecasting model to derive a predictive improvement in the performance for the turbine system.Type: ApplicationFiled: August 17, 2016Publication date: February 22, 2018Inventors: Ernesto Heliodoro Escobedo Hernandez, Monica Lizbeth Perez
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Publication number: 20180051589Abstract: A turbine engine fleet wash management system is configured to electronically communicate with a turbine engine system, a fleet management service, and a cleaning management service. The turbine engine fleet wash system causes a cleaning of a turbine engine to occur based on information received from the turbine engine system and other sources. The turbine engine fleet wash management system includes a cleaning schedule optimizer that generates a cleaning schedule based on engine health monitoring data, engine operation data, maintenance schedules for the turbine engine, and cleaning regimen data. The cleaning schedule optimizer estimates turbine engine performance improvements based on the selected cleaning regimen, and calculating an estimate of carbon credits earned based on the predicted improvement in turbine engine performance.Type: ApplicationFiled: October 27, 2017Publication date: February 22, 2018Inventors: George F. Griffiths, Prahlad R.D. Heggere, Jeffrey A. Green
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Publication number: 20180051590Abstract: A turbine ring assembly includes ring sectors forming a turbine ring and a ring support structure, each ring sector having, in a section plane defined by an axial direction and a radial direction of the turbine ring, a portion forming an annular base with, in the radial direction, an inside face defining the inside face of the turbine ring and an outside face from which a first and a second attachment tab protrude, the ring support structure having a central annulus from which a first and a second radial tab protrude, between which the first and second attachment tabs of each ring sector are held. The first radial tab comprises a one-piece annular flange that is fastened in a removable manner to the central annulus of the ring support structure.Type: ApplicationFiled: August 18, 2017Publication date: February 22, 2018Applicant: Safran Aircraft EnginesInventors: Nicolas Paul TABLEAU, Sébastien Serge Francis CONGRATEL, Clément Jean Pierre DUFFAU, Lucien Henri Jacques QUENNEHEN
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Publication number: 20180051591Abstract: A turbine ring assembly includes ring sectors made of ceramic matrix composite forming a ring and a ring support structure. Each sector includes an annular base with, in a radial direction, an inside face and an outside face from which extend two attachment tabs held between two radial tabs of the structure. The assembly also includes, for each sector, at least two pins cooperating with one of the attachment tabs and the corresponding radial tab, and at least one pin cooperating with the other attachment tab and the corresponding radial tab. The first radial tab includes a first annular radial portion integral to the structure, and a removable second annular radial portion extending radially toward the center of the ring over a greater portion than said first radial annular portion, the portion extending beyond the first annular radial portion including orifices for receiving one of the pins.Type: ApplicationFiled: August 18, 2017Publication date: February 22, 2018Applicant: SAFRAN AIRCRAFT ENGINESInventors: Lucien Henri Jacques QUENNEHEN, Sébastien Serge Francis CONGRATEL, Clément Jean Pierre DUFFAU, Nicolas Paul TABLEAU
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Publication number: 20180051592Abstract: A rotor pivoting system (1) for setting a rotor (2) upright, for the purpose of maintenance and/or repair work: a turning pedestal (9) having a pivoting device (10), and at least one bearing pedestal (11) for supporting the rotor when not upright; a heavy-duty stand (3) with a multiplicity of vertically extendable supporting feet (4, 5) which receive the turning pedestal and the bearing pedestal and is transportable and introduces forces occurring when a rotor arranged on the turning pedestal (9) and the bearing pedestal (11) is being set upright, via the supporting feet (4, 5), into a base on which said stand is positioned. Also, a method for carrying out maintenance and/or repair work on a rotor (2) of a machine using a rotor pivoting system (1) according to the invention.Type: ApplicationFiled: October 30, 2017Publication date: February 22, 2018Inventors: Matthias RICHTER, Marcus ROCHLITZER
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Publication number: 20180051593Abstract: A rotor turning system for turning a rotor is provided. The system may include a rotary driver including a rotating drive shaft. A removable rotor grasping element is configured to frictionally grasp at least a portion of an exterior circumference of a portion of the rotor. A drive linkage couples the rotating drive shaft to the rotor grasping element to impart a torque to the rotor with the rotor grasping element to turn the rotor. A rotor grasping element is also provided for grasping a substantially smooth exterior surface of a rotor to allow for turning of the rotor. A related method is also provided.Type: ApplicationFiled: May 13, 2015Publication date: February 22, 2018Inventors: Lukasz Sajdak, Anthony Paul Curran, John William Herbold, Michal Wojciech Wnuk
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Publication number: 20180051594Abstract: A turning apparatus includes: an electric motor; a pinion gear that rotationally drives a wheel gear provided in a rotor in a first rotation direction and moves to a first position where the pinion gear can transmit a rotation of the electric motor to the wheel gear and a second position where the pinion gear cannot transmit the rotation of the electric motor to the wheel gear; a current value detection unit that detects a current value of the electric motor in a state where the pinion gear is positioned at the first position; and a control device that controls the electric motor to rotate the pinion gear in a second rotation direction opposite to the first rotation direction based on the current value detected by the current value detection unitType: ApplicationFiled: March 24, 2015Publication date: February 22, 2018Applicant: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATIONInventors: Masataka Yamada, Manu Agarwal
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Publication number: 20180051595Abstract: Disclosed are power generation apparatuses. An exemplary power generation apparatus (1) is configured such that water vapor generated in a steam generator (2) is supplied to a scroll expander (3) to drive the scroll expander, wherein: a condensation device (5) is arranged in a discharge path (12) downstream of the scroll expander, the condensation device being configured to mix water vapor having passed through the scroll expander directly with cooling water to condense the water vapor; and the condensation device includes a control unit (10) that performs a control of adjusting the amount of cooling water supply so as to obtain condensed water having a predetermined temperature.Type: ApplicationFiled: February 26, 2016Publication date: February 22, 2018Applicant: Yanmar Co., Ltd.Inventors: Yuki Tokuoka, Taisuke ONO, Takashi MATSUURA, Masafumi SHINOMIYA, Takayuki IGUCHI
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Publication number: 20180051596Abstract: A combine cycle power plant is presented. The combine cycle power plant includes a gas turbine, a heat recovery steam generator, a main steam turbine and a supercritical steam turbine. The supercritical steam turbine may be operated as a separate steam turbine that may be not a single steam turboset with the main steam turbine. The supercritical steam turbine receives supercritical steam generated in the heat recovery steam generator to produce power output. Exiting steam from the supercritical steam turbine may be routed to the main steam turbine. The supercritical steam turbine may be operated at a rotational speed that is higher than a grid frequency. The rotational speed of the supercritical steam turbine may be reduced to the grid frequency via a gearbox.Type: ApplicationFiled: January 25, 2016Publication date: February 22, 2018Inventors: Michael S. Briesch, Ankur Deshmukh, Thorsten Wolf
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Publication number: 20180051597Abstract: 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.Type: ApplicationFiled: August 18, 2016Publication date: February 22, 2018Applicant: Electro-Motive Diesel, Inc.Inventors: Adarsh Gopinathan Nair, Laura E. Rasmussen
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Publication number: 20180051598Abstract: Systems and methods for correcting an engine intake camshaft position and an engine exhaust camshaft position for a variable valve timing engine are described. In one example, intake manifold pressure of an engine is sampled while a motor/generator rotates the engine at a predetermined speed without fuel being supplied to the engine. A camshaft angle where minimum intake manifold pressure is observed is a basis for correcting camshaft position.Type: ApplicationFiled: August 18, 2016Publication date: February 22, 2018Inventors: David Pedro, Marcus William Fried
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Publication number: 20180051599Abstract: A valve opening and closing timing control apparatus includes a drive-side rotational body, a driven-side rotational body, an intermediate lock mechanism which selectively switches between a lock state where displacement of a relative rotational phase of the driven-side rotational body relative to the drive-side rotational body is restrained in an intermediate lock phase and an unlock state where the lock state is released, and an electromagnetic valve. At a time of predetermined operation of an internal combustion engine, a value of the drive current is set as a boundary current, and the value of the drive current to be set as the boundary current differs, by a predetermined value, from a value of the drive current at a time when the unlock state was switched to the lock state due to the change of the drive current.Type: ApplicationFiled: September 25, 2015Publication date: February 22, 2018Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Hiroyuki AMANO, Masaki KOBAYASHI, Yoshiaki YAMAKAWA
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Publication number: 20180051600Abstract: A valve system for internal combustion engines that is controlled by a camshaft is a potential source of engine damage if the timing thereof is disrupted (e.g. when the timing belts rupture). Furthermore, valves in combination with the camshaft and the timing chain contribute to noise and vibrations during operation. The production costs can be high. Thus, the engine is positioned higher and is heavier. Thus, there is proposed a valve mechanism composed of a plurality of gas exchange valves that revolve slowly about the cylinder wall. Each rotary valve is controlled separately and has symmetrical openings. The number of openings in the rotary valve corresponds to the number of working cycles per revolution. Since each rotary valve is driven separately and as a result of the size of the openings in the valve, it is possible to obtain different phase shifts, valve overlaps and opening times.Type: ApplicationFiled: April 20, 2016Publication date: February 22, 2018Inventor: An THAI THANH
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Publication number: 20180051601Abstract: A cylinder deactivation system includes an intake cam follower assembly, an exhaust cam follower assembly, an exhaust cam, and a controller. The intake cam follower assembly is used to open an intake engine valve and is switchable to operate in one of an active state and a deactive state. The exhaust cam follower assembly is used to open an exhaust engine valve and is switchable to operate in one of a primary lift state and a secondary lift state. The exhaust cam includes a primary lift cam lobe and a secondary lift cam lobe and is used to actuate the exhaust cam follower assembly in the primary lift state and in the secondary lift state. The controller is used to open the exhaust engine valve during the deactive combustion cycle in advance of the opening of the intake engine valve that occurs during the subsequent active combustion cycle.Type: ApplicationFiled: August 18, 2016Publication date: February 22, 2018Inventors: Matthew G. Foster, Keith A. Confer, Wayne R. Moore
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Publication number: 20180051602Abstract: A variable valve duration apparatus may include a first cam rotating with a camshaft; a second cam rotating with the camshaft; a first operation device that is operated by the first cam to generate a valve lift; a second operation device that is operated by the second cam to generate the valve lift; and a controller controlling the first operation device or the second operation device to generate the valve lift according to an operation state of an engine.Type: ApplicationFiled: December 8, 2016Publication date: February 22, 2018Applicant: Hyundai Motor CompanyInventors: Donghoon SEOK, Jaechun KIM
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Publication number: 20180051603Abstract: An oil suction device is provided, including a main body and a sleeve member. A front end of the main body has a flow hole, an interior of the main body has a receiving space, one of two ends of a piston member is disposed in the receiving space and movable relative to the main body to allow a fluid to flow into or out of the receiving space through the flow hole, and the main body is light-penetrable. The sleeve member covers the main body, the sleeve member has at least one hollow-out portion formed radially, and the sleeve member and the main body are in different colors.Type: ApplicationFiled: August 18, 2016Publication date: February 22, 2018Inventors: Ying-Chieh Liao, Yu-Kuo Liao
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Publication number: 20180051604Abstract: A four-stroke engine lubrication system comprises: an engine body in which a crank shaft chamber and an air valve distribution chamber are arranged; a cylinder head cover fixed onto the engine and communicated with the atmosphere; and an oil storage tank which is configured to store lubricating oil, arranged on the engine body, located at one side of a cam, and provided with an oil mist generation device therein, wherein an oil outlet passage of the oil mist generation device communicates the oil storage tank with the crank shaft chamber via an oil outlet pipe; the crank shaft chamber is communicated with the air valve distribution chamber via a check valve; the air valve distribution chamber is communicated with the oil storage tank via a pipe; the air valve distribution chamber is communicated with the cylinder head cover; and the cylinder head cover is communicated with the oil storage tank.Type: ApplicationFiled: November 1, 2017Publication date: February 22, 2018Inventors: KE CHEN, TAO JIANG
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Publication number: 20180051605Abstract: A conduit for transferring fluid from one location to another. The conduit includes a tube having an outer surface and an insulation layer surrounding the tube. A heating layer is disposed between the insulation layer and the tube, such that the heating layer is wrapped around the outer surface of the tube. The conduit includes a reinforcement layer sandwiched between the insulation layer and the heating layer.Type: ApplicationFiled: August 16, 2016Publication date: February 22, 2018Applicant: Caterpillar Inc.Inventors: Brandyn A. Stack, Rodney A. Lawrence, Eric Ferguson
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Publication number: 20180051606Abstract: A PCV valve mounting structure includes a cylinder head of an engine, an intake manifold coupled with the cylinder head to form a blow-by gas passage. A PCV valve is disposed in the blow-by gas passage. The PCV valve includes a valve case and a plurality of seal members elastically supporting the valve case on the cylinder head and the intake manifold. The PCV valve is configured to control a flow rate of the blow-by gas depending on the negative intake pressure of the engine. The PCV valve has a measuring passage configured to adjust the flow rate of the blow-by gas and positioned upstream of the seal members. An annular space is formed between the cylinder head and the valve case. The annular space extends in the lengthwise longitudinal axial direction from an upstream end of the valve case.Type: ApplicationFiled: August 14, 2017Publication date: February 22, 2018Applicant: AISAN KOGYO KABUSHIKI KAISHAInventor: Rikako MURAMATSU
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Publication number: 20180051607Abstract: A snap-action valve assembly for an exhaust system is provided that includes a first conduit and a second conduit that are joined to together to define an exhaust passageway. A valve flap is disposed within the exhaust passageway for controlling exhaust flow. A shaft supports the valve flap in the exhaust passageway for rotation between open and closed positions. First and second bushings support the shaft. A pad made of wire mesh is attached to the valve flap. The pad includes an end portion that contacts the first or second conduit in the closed position and side wings that contact the first or second conduit in the open position. A resilient tongue may support the pad on an angle relative to the valve flap and a mass damper may be attached to one end of the shaft. These features dampen vibration and reduce valve flap flutter.Type: ApplicationFiled: August 17, 2016Publication date: February 22, 2018Inventors: Larry J. GEER, Erwin PETERS, Stephen M. THOMAS, William E. HILL
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Publication number: 20180051608Abstract: A structure pof muffler ma include a housing which has a space therein, and has a first side connected to an inlet pipe into which exhaust gas flows, a first baffle which divides an interior of the housing into a front chamber and an intermediate chamber connected to the inlet pipe,a second baffle which divides the interior of the housing into a rear chamber and the intermediate chamber connected to the inlet pipe, and a discharge pipe which is mounted to penetrate the first baffle and the second baffle, and mounted such that a first end of the discharge pipe is positioned in the rear chamber, and a second end of the discharge pipe extends through the front chamber and penetrates the housing,Type: ApplicationFiled: December 1, 2016Publication date: February 22, 2018Applicants: Hyundai Motor Company, Sejong Ind. Co., Ltd.Inventors: Ju-Hyuck LEE, Hong-Jae KIM, Ki-Chul PARK, In-Sung JUNG, Seung-Hoon CHAE
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Publication number: 20180051609Abstract: A snap-action valve assembly for an exhaust system and a method for manufacturing the same is provided. The valve assembly includes a first conduit and a second conduit that is partially received in the first conduit. A valve flap is disposed within the first conduit for controlling exhaust flow. A shaft supports the valve flap in the first conduit for rotation between open and closed positions. The first conduit has first and second slots, each extending from an open slot end to a closed slot end. First and second bushings supporting the shaft are disposed within the slots between the second conduit and the closed slot ends. A pad made of wire mesh is attached to the valve flap. The pad includes an end portion that contacts the first conduit in the closed position to dampen vibration and reduce valve flap flutter.Type: ApplicationFiled: August 17, 2016Publication date: February 22, 2018Inventors: Larry J. GEER, Erwin PETERS, Stephen M. THOMAS, William E. HILL
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Publication number: 20180051610Abstract: A snap-action valve assembly for an exhaust system and a method for manufacturing the same is provided. The valve assembly includes a first conduit and a second conduit that is partially received in the first conduit. A valve flap is disposed within the first conduit for controlling exhaust flow. A shaft supports the valve flap in the first conduit for rotation between open and closed positions. The first conduit has first and second slots, each extending from an open slot end to a closed slot end. First and second bushings subassemblies supporting the shaft are disposed within the slots between the second conduit and the closed slot ends. Each of the first and second bushing subassemblies includes an alignment system in the form of protrusions that limit insertion of the first and second bushing subassemblies into the first and second slot to a single orientation.Type: ApplicationFiled: October 30, 2017Publication date: February 22, 2018Inventors: Stephen M. THOMAS, Larry J. GEER
