Patents Issued in June 20, 2019
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Publication number: 20190186279Abstract: A seal plate for a gas turbine engine includes an annular wall provided about an axis and extending between first and second ends that are radially spaced from one another with respect to the axis. The first end includes an axially extending pilot. The second end includes an axially extending flange and an adjacent annular seal seat. The wall includes a portion between the first and second ends that extend substantially in the axial direction and is configured to permit the second end to move axially relative to the first end in response to thermal growth.Type: ApplicationFiled: February 22, 2019Publication date: June 20, 2019Inventors: Matthew Budnick, Conway Chuong
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Publication number: 20190186280Abstract: A component and method for minimizing a gap between a blade platform ledge and a vane platform ledge in a turbine engine. The blade platform supports turbine blades attached to a shaft. The movable blade platform is positioned adjacent to a stationary vane platform having vanes mounted on an outer surface. The blade and vane platforms are separated by the gap between the platform ledges. During manufacture, an abrasive coating is applied to the surface of the blade platform ledges so that the coating contacts the vane platform ledge when the engine is started. The abrasive coating on the turbine blade platform cuts the surface of the vane platform ledge to form a gap sufficient to permit unobstructed motion of the blade platform, yet of minimal size to limit the flow of gas between the space within and the space outside the platforms.Type: ApplicationFiled: December 19, 2017Publication date: June 20, 2019Inventor: Neil Anthony Clayton
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Publication number: 20190186281Abstract: An air seal in a gas turbine engine includes a substrate. A bond coating layer is adhered to the substrate. An abradable layer is adhered to the bond coating layer. The abradable layer comprises a metal matrix discontinuously filled with a lubricious oxide solid lubricant filler.Type: ApplicationFiled: December 20, 2017Publication date: June 20, 2019Applicant: United Technologies CorporationInventors: Pantcho Stoyanov, Christopher W. Strock, Kevin Seymour
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Publication number: 20190186282Abstract: Assembly forming a labyrinth seal for a turbomachine, comprising: at least one abradable material of which the inner surface defines a stair shape with a sequence of treads and risers; a plurality of fins extending radially toward said inner surface, the fins each comprising, at least in part, an upstream side wall forming a riser facing the corresponding fin such that, when seen in axial cross-section, the tangent at the top of the upstream side wall of at least one fin and the straight line passing through the downstream side wall of said at least one abradable material intersect, the angle between said tangent and said straight line being strictly between 5 and 15°.Type: ApplicationFiled: August 23, 2017Publication date: June 20, 2019Inventors: Christophe SCHOLTES, Antoine Robert Alain BRUNET, Wilfried Lionel SCHWEBLEN
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Publication number: 20190186283Abstract: A temperature sensing device for a turbine of an engine and a method for measuring the temperature of the turbine are disclosed. The turbine includes a turbine stage coupled to a rotatable shaft and an outer casing. First and second sensor holders are disposed between the rotatable shaft and the outer casing, and first and second temperature sensors disposed on the first and second sensor holders, respectively. Each of the first and second sensor holders has only one temperature sensor disposed thereon, the first and second temperature sensors are disposed at first and second distances from the rotatable shaft respectively, and the first and second distances are different.Type: ApplicationFiled: December 18, 2017Publication date: June 20, 2019Inventor: Douglas Boyd
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Publication number: 20190186284Abstract: Embodiments of systems and methods for operating a gas turbine engine defining a bowed rotor condition are generally provided. The systems and methods include rotating a rotor assembly defining a bowed rotor condition from approximately zero revolutions per minute (RPM) to within a bowed rotor mitigation speed range, in which the bowed rotor mitigation speed range is defined by a lower speed limit greater than zero RPM and an upper speed limit less than or equal to an idle speed condition of the gas turbine engine; applying a load at the rotor assembly via an energy storage device; adjusting the load to limit rotational speed or acceleration of the rotor assembly to within the bowed rotor mitigation speed range for a period of time; and removing the load to enable rotation of the rotor assembly to the idle speed condition following the period of time.Type: ApplicationFiled: December 15, 2017Publication date: June 20, 2019Inventor: Charles Stanley Orkiszewski
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Publication number: 20190186285Abstract: A wear indicator for detecting blade clearance in a gas turbine engine includes a capacitor connected to a first conductor and a second conductor. The capacitor includes a multiple of layers arranged transverse to a rub direction, each layer separated by an insulator and including a first plate, a second plate, and a dielectric between the first plate and the second plate. A method of detecting blade clearance in a gas turbine engine, includes determining a change in capacitance between the first and second capacitance and determining an amount of material removed from the wear indicator by the blade corresponding to the change in capacitance.Type: ApplicationFiled: December 19, 2017Publication date: June 20, 2019Inventors: Eli Cole Warren, Ian F. Agoos, Edward F. Dreger, Corey A. Benoit
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Publication number: 20190186286Abstract: Example implementations relate to jet engines that include resonator-based diagnostics. An example implementation includes a jet engine. The jet engine includes a combustion chamber configured to house a combustion event of a fuel mixture. The jet engine also includes a resonator having a characteristic impedance and a resonant wavelength. The resonator includes a first conductor and a second conductor separated from one another by an interstitial space that is exposed to an environment of the combustion chamber. Further, the jet engine includes a controller communicatively coupled to the resonator and configured to perform operations. The operations include determining a characteristic of the resonator selected from the group consisting of the characteristic impedance and the resonant wavelength. The operations also include, based on the determined characteristic, determining a parameter of the combustion chamber.Type: ApplicationFiled: December 20, 2017Publication date: June 20, 2019Applicant: Plasma Igniter, LLCInventors: Andrew D. Lowery, James E. Smith
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Publication number: 20190186287Abstract: Example implementations relate to power-generation turbines that include resonator-based diagnostics. An example implementation includes a power-generation turbine. The power-generation turbine includes a combustion chamber configured to house a combustion event of a fuel mixture. The power-generation turbine also includes a resonator having a characteristic impedance and a resonant wavelength. The resonator includes a first conductor and a second conductor separated from one another by an interstitial space that is exposed to an environment of the combustion chamber. Further, the power-generation turbine includes a controller communicatively coupled to the resonator and configured to perform operations. The operations include determining a characteristic of the resonator selected from the group consisting of the characteristic impedance and the resonant wavelength. The operations also include, based on the determined characteristic, determining a parameter of the combustion chamber.Type: ApplicationFiled: December 20, 2017Publication date: June 20, 2019Applicant: Plasma Igniter, LLCInventors: Andrew D. Lowery, James E. Smith
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Publication number: 20190186288Abstract: Systems and methods for conditionally performing engine operational tests for a turbine engine are provided. A system comprising at least one processor can be configured to obtain sensor data associated with at least one sensor for a turbine engine. The sensor data identifies a current fuel flow associated with the turbine engine. The system can determine a predicted fuel flow of the turbine engine based at least in part on the current fuel flow and a fuel flow reduction associated with an engine operational test. The system can compare the predicted fuel flow to at least one threshold. The system can selectively initiate the engine operational test based on comparing the predicted fuel flow to the at least one threshold.Type: ApplicationFiled: December 20, 2017Publication date: June 20, 2019Inventors: Steven James Jastrzembowski, Thomas Edward Zieg, Jared Utah, Jeremy Seager, Michael Houpt
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Publication number: 20190186289Abstract: A gas turbine engine including a first rotor assembly comprising a first drive shaft extended along a longitudinal direction; a housing coupled to the first rotor assembly to provide rotation of the first rotor assembly around an axial centerline; a first accessory assembly, wherein the first accessory assembly sends and/or extracts energy to and from the first rotor assembly; and a first clutch assembly disposed between the first rotor assembly and the first accessory assembly. The first clutch assembly engages and disengages the first rotor assembly to and from the first accessory assembly.Type: ApplicationFiled: December 14, 2017Publication date: June 20, 2019Inventors: Milind Chandrakant Dhabade, Kudum Shinde, Thomas Edward Agin, Weize Kang, Praveen Sharma, Shivam Mittal
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Publication number: 20190186290Abstract: A system for light-off detection in a gas turbine engine according to an example of the present disclosure includes, among other things, a computing device that has memory and a processor. The computing device is configured to execute a data module and a comparison module. The data module is programmed to access data that corresponds to a present rotational speed of a gas turbine engine component. The comparison module is programmed to cause an indicator to be generated in response to determining that an acceleration rate relating to the present rotational speed meets at least one predetermined acceleration threshold, the indicator relating to an engine light-off condition.Type: ApplicationFiled: December 15, 2017Publication date: June 20, 2019Inventor: Victor Pascu
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Publication number: 20190186291Abstract: An airfoil includes pressure and suction side walls that extend in a chord-wise direction between leading and trailing edges. The pressure and suction side walls extend in a radial direction to provide an exterior airfoil surface. A main-body core cooling passage is arranged between the pressure and suction walls in a thickness direction and extends radially toward a platform. A skin core cooling passage is arranged in one of the pressure and suction side walls to form a hot side wall and a cold side wall. The hot side wall defines a portion of the exterior airfoil surface and the cold side wall defines a portion of the core passage. The skin core cooling passage is divided by a wall into two discrete first and second skin core cooling passages each supplied with cooling fluid from opposing sides.Type: ApplicationFiled: December 18, 2017Publication date: June 20, 2019Inventors: Nicholas M. LoRicco, Steven Bruce Gautschi
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Publication number: 20190186292Abstract: A method for turbocharger key-off cooling control may include performing turbocharger key-off cooling control based on engine load for circulating engine coolant to a turbocharger cooling line when high cooling performance of a vehicle is checked by a coolant temperature and an oil temperature at which a turbocharger controller does not require operation of an auxiliary electric water pump when an engine is stopped.Type: ApplicationFiled: November 19, 2018Publication date: June 20, 2019Inventors: Su-Ho Lee, Jae-Seok Choi, Min-Young Kwon, Jun-Ho Lee, Yong-Hoon Kim, Yang-Geol Lee
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Publication number: 20190186293Abstract: A guide vane for an aircraft turbomachine, the aerodynamic part of the vane being defined by an extrados body and an intrados body, the part comprising an internal lubricant cooling passage equipped with flow disturbing studs, including a first series of studs made in a single piece with the extrados body, and a second series of studs made in a single piece with the intrados body, the studs of the second series defining a second inter-stud space between them through which studs of the first series pass while the studs of the second series pass through the first inter-stud space. Furthermore, the end of the studs is located at a distance from the intrados body, and the end of the studs is located at a distance from the extrados body.Type: ApplicationFiled: December 17, 2018Publication date: June 20, 2019Inventors: Mohammed-Lamine BOUTALEB, Amélie Argie Antoinette CHASSAGNE, Dimitri Daniel Gariel MARQUIE
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Publication number: 20190186294Abstract: A gas turbine having a turbine casing, an outer and inner casing part between which a hot gas flows. An annular duct is formed between the outer casing part and the turbine casing to accommodate a cooling fluid. An exhaust gas casing is positioned downstream in the flow direction of the hot gas. A bearing system for a rotor has bearing struts arranged around the circumference which extend from a shaft bearing to an outer casing and, in the hot gas path of an exhaust gas diffuser arranged in the exhaust gas casing are shielded by another strut set which surrounds the bearing struts and is hollow to support the diffuser, wherein, to center the turbine and the exhaust gas casing, these are connected to one another via a fit wherein the turbine and the exhaust gas casing can be supplied with cooling air independently of one another.Type: ApplicationFiled: July 28, 2017Publication date: June 20, 2019Applicant: Siemens AktiengesellschaftInventors: Dirk Allebrod, Stephan Sonnen
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Publication number: 20190186295Abstract: Methods and systems are provided for a turbocharger. In one example, the turbocharger comprises a turbine rotor mounted on a shaft and supported within a turbocharger housing; an oil seal arranged within the turbocharger housing; and a heat shield located adjacent to the oil seal within the turbocharger housing, the heat shield having an aperture through which the shaft extends, wherein the heat shield is configured to substantially maintain the position of the oil seal in the event of failure of the turbocharger.Type: ApplicationFiled: December 11, 2018Publication date: June 20, 2019Inventors: Philip Whiston, Anthony Hughes, Richard Dukes, Steven Johnson, Richard Holdsworth
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Publication number: 20190186296Abstract: Dampers for bearing assemblies of gas turbine engines are provided. For example, a damper comprises a damper housing, a lubricant passage defined in the damper housing, and a valve positioned within the lubricant passage. The lubricant passage includes an inlet and an outlet. In one embodiment, the valve is configured to restrict a flow of lubricant from the inlet into the damper when a reference temperature is below a threshold temperature. In another embodiment, the valve is configured to increase leakage of a lubricant through the outlet when a reference temperature is below a threshold temperature. In other embodiments, the valve is passively actuated and is configured to move within the lubricant passage to control a flow of lubricant from the inlet to the outlet based on a reference temperature.Type: ApplicationFiled: December 15, 2017Publication date: June 20, 2019Inventor: Charles Stanley Orkiszewski
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Publication number: 20190186297Abstract: A lubrication system for gas turbine engine includes a main lubricant passage for providing lubricant from a lubricant supply to a lubricant manifold. The lubricant manifold includes first and second lubricant passages The lubricant manifold is configured to supply lubricant to first and second separate parts of a geared architecture at different first and second lubricant flow conditions. A first filter element is provided within a radial tube for supplying lubricant to the first passage of the lubricant manifold and a second filter element is provided within a second radial tube for supplying lubricant to the second lubricant passage of the lubricant manifold. The first filter element is different than the second filter element.Type: ApplicationFiled: February 25, 2019Publication date: June 20, 2019Inventors: John R. Otto, Stephanie M. Baker
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Publication number: 20190186298Abstract: A steam turbine assembling method includes an upper half assembling step of, after disposing an upper half partition plate having an upper half partition plate division surface on the inner peripheral side of an upper half casing having an upper half casing division surface, attaching an upper half position defining portion to the upper half casing and the upper half partition plate so as to form an upper half assembly, and a lower half assembling step of disposing a lower half partition plate having a lower half partition plate division surface capable of abutting against the upper half partition plate division surface on an inner peripheral side of a lower half casing having a lower half casing division surface capable of abutting against the upper half casing division surface so as to form a lower half assembly.Type: ApplicationFiled: September 5, 2016Publication date: June 20, 2019Applicant: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATIONInventors: Katsumi Terada, Hiroaki Irikawa, Yuichi Sasaki
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Publication number: 20190186299Abstract: The present invention relates to a closed circuit (10) operating on a Rankine cycle, said circuit comprising at least one compression and circulation pump (12) for a working fluid in liquid form, a heat exchanger (18) over which a hot source (23) is swept in order to evaporate said fluid, means (26) for expanding the fluid into the form of a vapor, a cooling exchanger (34) swept by a cold source to condense the working fluid, a reservoir (40) of working fluid, and working fluid circulation pipes (44, 46, 50, 52, 54) for circulating said fluid between the pump, the heat exchanger, the expansion means, the condenser and the reservoir. According to the invention, the circuit comprises a device (56) for draining the fluid contained in the heat exchanger (18).Type: ApplicationFiled: July 11, 2017Publication date: June 20, 2019Inventors: Arthur LEROUX, Antonin PAUCHET
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Publication number: 20190186300Abstract: An exhaust device for a combined cycle power plant, includes a diffuser and a plenum. The diffuser includes a first wall, a second wall, a diffuser inlet, a diffuser outlet, and a diffuser flow path. The first and second walls extend circumferentially about a centerline axis of the exhaust device. The second wall is spaced from the first wall. The diffuser flow path is defined between the first and second walls, and extends from the diffuser inlet to outlet. The plenum includes an inlet wall portion and a non-circular plenum outlet, where the inlet wall portion is coupled to the diffuser outlet. The non-circular plenum outlet is spaced from the diffuser outlet along an axial direction of the exhaust device.Type: ApplicationFiled: December 19, 2018Publication date: June 20, 2019Inventor: Deepesh Dinesh Nanda
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Publication number: 20190186301Abstract: The present invention discloses a novel apparatus and methods for augmenting the power of a gas turbine engine, improving gas turbine engine operation, and reducing the response time necessary to meet changing demands of a power plant. Improvements in power augmentation and engine operation include systems and methods for preheating a steam injection system.Type: ApplicationFiled: February 26, 2019Publication date: June 20, 2019Inventors: Robert J. Kraft, Scott Auerbach
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Publication number: 20190186302Abstract: A cogeneration system to generate thermal energy in form of hot water, using the system's solar collector directly as an evaporator and a heat exchanger integrated in a thermal tank used as a condenser. A variable capacity expander (turbine) is used and the organic working fluid selection is specific for this application. Thus is provided a technological alternative for the production of electricity and thermal energy using a renewable energy source.Type: ApplicationFiled: December 4, 2018Publication date: June 20, 2019Applicant: Centro de Investigación en Materiales Avanzados, S.C.Inventors: Daniel Arturo Leal Chavez, Ricardo Beltran Chacon
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Publication number: 20190186303Abstract: An oil supply device for a vacuum pump of an internal combustion engine, in particular of a car, including an oil feed line via which the vacuum pump can be supplied with oil for lubricating the vacuum pump. The oil feed line includes a valve connected to the oil feed line in an oil-conducting manner, which valve has a piston that is accommodated in a valve interior of the valve and can move at least between a supply position in which it allows a supply of oil to the vacuum pump and a blocking position in which it prevents the supply of oil to the vacuum pump, and has a spring element, by means of which a spring force that holds the piston in the blocking position can be applied to the piston when the internal combustion engine is at rest.Type: ApplicationFiled: December 17, 2018Publication date: June 20, 2019Applicant: Joma-Polytec GmbHInventors: Torsten Helle, Hans-Peter Ott, Mathias Schlotterer, Stefan Spille, Werner Engelin, Uwe Bindel, Frank Hoffmann, Dirk Ebert
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Publication number: 20190186304Abstract: A rocker arm assembly constructed in accordance to one example of the present disclosure includes an outer rocker arm, a first inner rocker arm, and a second inner rocker arm. The first inner rocker arm is configured to move between a latched and unlatched position relative to the outer rocker arm. The second inner rocker arm is configured to move between a latched and unlatch position relative to the outer rocker arm. The rocker arm assembly provides at least three distinct lift profiles including (i) a first lift profile when the first inner rocker arm is latched and the second inner rocker arm is unlatched, (ii) a second lift profile when the second inner rocker arm is latched and the first inner rocker arm is unlatched, and (iii) a third lift profile when both the first and second inner rocker arms are unlatched.Type: ApplicationFiled: February 25, 2019Publication date: June 20, 2019Applicant: Eaton Intelligent Power LimitedInventors: James E. McCarthy, JR., Dale Arden Stretch
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Publication number: 20190186305Abstract: A turbocharged internal combustion engine is provided with at least a partially variable valve train on an intake side wherein the intake valves are controlled to optimize the actuation of a second inlet valve in relation to a first inlet valve for different load conditions.Type: ApplicationFiled: February 26, 2019Publication date: June 20, 2019Inventors: Martin Wirth, Klemens Grieser, Marco Marceno, Kay Hohenboeken, Jan Linsel, Harald Stoffels, Ludwig Stump
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Publication number: 20190186306Abstract: A phase-shifting device, a so-called cam phaser, is arranged between a crankshaft and at least one camshaft to change the at least one camshaft's rotational position in relation to the crankshaft and thus push forward or defer at least one inlet valve's and/or at least one exhaust valve's opening and closing time. The phase-shifting device is connected to an accumulator that can be charged by an oil pump. The oil pressure may be increased with the help of a pressure medium controlled cylinder before or during a phase-shifting process.Type: ApplicationFiled: June 1, 2017Publication date: June 20, 2019Applicant: Scania CV ABInventor: Hans GÖRANSSON
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Publication number: 20190186307Abstract: A variable cam timing system in an engine is provided. The variable cam timing system includes a camshaft receiving rotational input from a crankshaft. The camshaft includes a valve cam rotationally actuating a valve coupled to a cylinder and a null cam actuating a null follower including a null spring exerting a return force on the null cam during interaction between the null cam and the null follower, where the null follower is independent from the cylinder.Type: ApplicationFiled: December 20, 2017Publication date: June 20, 2019Inventors: John Rollinger, Jamie Hanshaw, Adam Krach
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Publication number: 20190186308Abstract: A variable cam timing phaser arrangement is disclosed, comprising: a rotor having at least one vane; a stator co-axially surrounding the rotor, having at least one recess for receiving the at least one vane of the rotor, wherein the at least one vane divides the at least one recess into an first chamber and a second chamber; and a control assembly for regulating hydraulic fluid flow from the first chamber to the second chamber or vice-versa. The control assembly comprises a central on/off piloted valve for allowing or preventing fluid communication between the first and second chambers, and a remotely located solenoid-controlled actuator for controlling the on/off piloted valve. The present disclosure further relates to a method of controlling the timing of a camshaft in an internal combustion engine. The disclosure also relates to an internal combustion engine and a vehicle comprising the disclosed variable cam timing phaser arrangement.Type: ApplicationFiled: April 11, 2017Publication date: June 20, 2019Applicant: SCANIA CV ABInventors: Mikael ERIKSSON, Daniel OLOVSSON
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Publication number: 20190186309Abstract: A device lubricates a connecting rod bearing on a crankshaft of an internal combustion engine. The device has a piston having an internal piston cooling fluid channel, and an outlet channel in fluid communication with the fluid channel. The device has a connecting rod, which is connected to the piston in an articulated, in particular pivotable, manner, and has a large connecting rod eye and a connecting channel. The large connecting rod eye is formed for receiving the connecting rod bearing. The connecting channel forms a fluid connection between the outlet channel and the large connecting rod eye so that a fluid, in particular a cooling lubricating fluid (e.g. oil), can be fed, or is fed, from the fluid channel to the large connecting rod eye via the outlet channel and the connecting channel. The connecting rod bearing can be lubricated by cooling oil from the fluid channel of the piston.Type: ApplicationFiled: December 7, 2018Publication date: June 20, 2019Inventors: Thomas Malischewski, Jens Dietrich, Steffen Hirschmann, Dominik Renner
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Publication number: 20190186310Abstract: A lubricant supply apparatus for an internal combustion engine includes a lubricant shower and a baffle plate. The lubricant shower is disposed between a camshaft and a cylinder head cover attached to a cylinder head. The lubricant shower includes a supply port from which a lubricant is supplied to the camshaft. The baffle plate is disposed between the camshaft and the lubricant shower such that a clearance is provided between the baffle plate and the lubricant shower. The baffle plate includes a hole provided at a position at which the hole of the baffle plate overlaps with the supply port of the lubricant shower. The camshaft is provided with a cam. The supply port of the lubricant shower and the hole of the baffle plate are located above the cam.Type: ApplicationFiled: October 4, 2018Publication date: June 20, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Koichiro Kimura, Masami Ishikawa
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Publication number: 20190186311Abstract: An object of the present invention is to provide an actuator of a link mechanism for an internal combustion engine capable of ensuring lubricity regardless of a slope of a road surface. An actuator of a link mechanism for an internal combustion engine according to one aspect of the present invention includes a ball bearing having an inner race held by a wave generator of a strain wave gearing speed reducer and an outer race held by a housing, and a holding mechanism capable of holding lubricant oil on a radially inner side with respect to the outer race of this roller bearing.Type: ApplicationFiled: July 28, 2017Publication date: June 20, 2019Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Kishiro NAGAI, Junichiro ONIGATA
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Publication number: 20190186312Abstract: A device lubricates a big-end bearing on a crankshaft of an internal combustion engine. The device includes a piston with a fluid channel and an outlet channel fluidically connected thereto, and a connecting rod. The connecting rod has a small connecting rod eye, a large connecting rod eye and a connecting channel. The small connecting rod eye is fluidically connected to the outlet channel. The connecting channel forms a fluidic connection between the small and large connecting rod eyes so that a cooling lubricant fluid can be supplied from the fluid channel to the large connecting rod eye via the outlet channel, the small connecting rod eye and the connecting channel. In this way, the big-end bearing can be lubricated by cooling oil from the fluid channel of the piston.Type: ApplicationFiled: December 18, 2018Publication date: June 20, 2019Inventors: Thomas Malischewski, Jens Dietrich, Steffen Hirschmann, Dominik Renner
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Publication number: 20190186313Abstract: A drain plug for an oil pan coupled to a plug mounting hole formed at one side of a lower portion of the oil pan, the drain plug may include a head portion configured to be formed at one end portion of the drain plug, and a screw portion configured to extend from the head portion and be screw-coupled to the plug mounting hole of the oil pan.Type: ApplicationFiled: November 28, 2018Publication date: June 20, 2019Applicants: Hyundai Motor Company, Kia Motors CorporationInventors: Byung-Hyun Lee, Hyun-Jun Kim, Jung-Ho Joo
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Publication number: 20190186314Abstract: A diesel oxidation catalyst article is provided, which includes a substrate carrier having a plurality of channels adapted for gas flow and a catalyst composition positioned to contact an exhaust gas passing through each channel. The catalyst composition includes a platinum (Pt) component and a sulfur (S)-containing component impregnated onto a refractory metal oxide support and is effective to abate hydrocarbon and carbon monoxide, as well as oxidize NO to NO2 in the exhaust gas. Methods of making and using the catalyst article are also provided, as well as emission treatment systems comprising the catalyst article.Type: ApplicationFiled: August 2, 2017Publication date: June 20, 2019Inventors: Shiang Sung, Joseph A. Patchett
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Publication number: 20190186315Abstract: An engine promoting DPF regeneration processing is provided. Catalyst activation processing and thereafter DPF regeneration processing are performed under control of a device. In the catalyst activation processing, a target temperature of exhaust at an exhaust exit of a catalyst is set to be in a first temperature region, and then the opening degree of an exhaust throttle device is controlled. In the DPF regeneration processing, the target temperature is set to be in a second temperature region. A target temperature of the exhaust at an exhaust inlet of a DPF is set to be in a third temperature region. The opening degree of the exhaust throttle device is controlled, and unburned fuel is supplied into the exhaust. The temperature regions are set to be successively higher, and a temperature difference between successive temperature regions is set to be successively lower.Type: ApplicationFiled: December 7, 2018Publication date: June 20, 2019Inventors: Katsushi INOUE, Hiroaki OKANO, Masanori FUJIWARA
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Publication number: 20190186316Abstract: An exhaust gas purification apparatus for an internal combustion engine includes the adsorbent, the catalyst and the heat generating element, wherein in cases where the residual capacity of the battery is smaller than a first predetermined value required for raising the temperature of the catalyst to an activation temperature thereof, and in cases where the residual capacity of the battery is larger than a second predetermined value which is smaller than the first predetermined value and which is required for raising the temperature of the adsorbent to a predetermined temperature at which the adsorbent exhibits adsorption performance required at the time of starting of the internal combustion engine, an amount of electric power to be supplied to the heat generating element from the battery is adjusted such that the temperature of the adsorbent becomes the predetermined temperature.Type: ApplicationFiled: December 5, 2018Publication date: June 20, 2019Applicant: Toyota Jidosha Kabushiki KaishaInventors: Ryohei ONO, Masaaki Sato, Katsuhiro Ito, Akira Mikami, Kazuhiro Umemoto, Daichi Imai
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Publication number: 20190186317Abstract: A component of an exhaust gas system and a method for exhaust gas after-treatment having a housing with an inlet and an outlet for an exhaust gas, an annular heat exchanger through which the exhaust gas can flow from the inlet in an axial direction and along a first flow path. Downstream of the heat exchanger, an annular catalyst body is arranged inside the heat exchanger and through which the exhaust gas can flow in a radial direction, such that, downstream of the catalyst body, the exhaust gas flows through the heat exchanger in the radial direction and along a second flow path.Type: ApplicationFiled: August 15, 2017Publication date: June 20, 2019Inventors: Peter HIRTH, Christoph PABST, Christian SCHORN, Egbert ZIENICKE
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Publication number: 20190186318Abstract: An exhaust aftertreatment system for an internal combustion engine includes a selective catalytic reduction (SCR) device, an injection system disposed to inject reductant into the exhaust pipe upstream of the SCR device. A single ammonia sensor is disposed to monitor an exhaust gas feedstream downstream of the SCR device. A controller is in communication with the single ammonia sensor and the internal combustion engine and operatively is connected to the injection system. The controller includes an instruction set that is executable to monitor, via the single ammonia sensor, a magnitude of ammonia in the exhaust gas feedstream downstream of the SCR device and determine NOx efficiency of the SCR device based upon the magnitude of ammonia in the exhaust gas feedstream downstream of the SCR device. A fault is detected in the SCR device based upon the NOx efficiency.Type: ApplicationFiled: December 15, 2017Publication date: June 20, 2019Applicant: GM Global Technology Operations LLCInventors: Yue-Yun Wang, Raffaello Ardanese
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Publication number: 20190186319Abstract: A dosing unit having a fluid path defined therethrough and including a fluid injector having an inlet tube; an inlet cup sized and shaped for receiving therein at least part of the inlet tube of the fluid injector, the inlet cup including a fluid inlet; an input tube in fluid communication with the inlet cup via the fluid inlet thereof, the input tube configured to receive fluid from a fluid source; and an insert partly disposed in the inlet tube of the fluid injector, the insert at least partly defining a fluid passage. The fluid passage is in fluid communication with the input tube and the inlet tube of the fluid injector and forms part of the fluid path of the dosing unit. The fluid passage includes a portion extending in a direction that is orthogonal to a longitudinal axis of the fluid injector.Type: ApplicationFiled: December 10, 2018Publication date: June 20, 2019Applicant: Continental Automotive Systems, Inc.Inventors: Robert Wayne McFarland, Keith Aaron Shaw, Christopher Michael Caulkins
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Publication number: 20190186320Abstract: An internal combustion engine including a urea-water solution injection in the exhaust system, includes at least one urea-water solution tank, at least one pump, at least one intake line leading to the pump, at least one urea-water solution metering valve which is connected to the pump with the aid of a pressure line, and at least one return line which leads from the pump to the urea-water solution tank and at whose end opposite to the pump a filter element is situated, as well as at least one urea-water solution sensor situated in the urea-water solution tank.Type: ApplicationFiled: August 7, 2017Publication date: June 20, 2019Inventors: Ralph STENGEL, Dominic WEBER, Peter BROLL, Daniel DAMMER
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Publication number: 20190186321Abstract: An exhaust system for a work vehicle includes a mixer that includes a nozzle configured to receive a first exhaust flow along a lateral axis through a plurality of openings in a peripheral wall of the nozzle. The nozzle also receives a diesel exhaust fluid along a longitudinal axis through a longitudinal inlet. Further, the nozzle is configured to mix the first exhaust flow and the diesel exhaust fluid to form an exhaust solution. In addition, the mixer includes a conduit configured to receive the exhaust solution along the longitudinal axis.Type: ApplicationFiled: December 20, 2017Publication date: June 20, 2019Inventors: Hesam Abbassi, Panos Tamamidis, Samrendra Kumar Singh, Daniel J. Zurn
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Publication number: 20190186322Abstract: An exhaust conduit having a wall with an inner surface that at least partially defines a flow channel, a first fin positioned within the flow channel and attached to the inner surface, a second fin positioned within the flow channel and attached to the inner surface such that the first fin is spaced apart from the second fin. A support strip is attached to the inner surface, attached to the first fin at a first location spaced apart from the inner surface, and attached to the second fin at a second location spaced apart from the inner surface.Type: ApplicationFiled: December 20, 2017Publication date: June 20, 2019Applicant: Caterpillar Inc.Inventors: Tim Alcenius, Daniel Barb, Steve Burch
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Publication number: 20190186323Abstract: An exhaust system for a work vehicle includes a selective catalytic reduction (SCR) mixer configured to be disposed within an interior of an SCR housing. The SCR mixer includes an intake conduit configured to receive a flow of an exhaust solution that includes a mixture of exhaust and diesel exhaust fluid. The SCR mixer also includes a J-turn conduit configured to receive the flow of the exhaust solution from the intake conduit, and the J-turn conduit is configured to change a direction of the flow of the exhaust solution. In addition, the SCR mixer includes an exhaust conduit configured to receive the flow of the exhaust solution from the J-turn conduit, and the exhaust conduit includes multiple outlets configured to direct the flow of the exhaust solution out of the SCR mixer to the interior of the SCR housing.Type: ApplicationFiled: December 20, 2017Publication date: June 20, 2019Inventors: Hesam Abbassi, Panos Tamamidis, Samrendra Kumar Singh
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Publication number: 20190186324Abstract: A heat recovery device comprises a body inwardly delimiting an exhaust gas circulation passage and a heat exchanger. The heat exchanger includes a casing, a plurality of exhaust gas circulation tubes and at least one grate arranged in the proximal opening of the casing. The grate comprises a wall in which orifices are arranged for receiving tubes. The grate also has an upright edge protruding toward an inside of the heat exchanger, the upright edge being rigidly attached to the casing. The wall of the grate has, around the orifices, a planar surface turned toward the body. The body has an opening delimited by a flat edge pressed against the planar surface. The planar surface and the flat edge are rigidly attached to one another to be tight with respect to exhaust gases.Type: ApplicationFiled: December 13, 2018Publication date: June 20, 2019Inventors: Frédéric GREBER, Yannick FOURCAUDOT
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Publication number: 20190186325Abstract: A SOx concentration acquiring apparatus of the invention comprises a sensor cell, a diffusion-limited layer, and an interior space. The sensor cell is formed by a solid electrolyte layer and sensor electrodes provided on opposite surfaces of the solid electrolyte layer, respectively. The interior space is defined by the solid electrolyte layer and the diffusion-limited layer such that an exhaust gas of an internal combustion engine flows into the interior space through the diffusion-limited layer. The apparatus executes a first voltage control for increasing and decreasing a voltage applied to the sensor cell and then, a second voltage control for increasing and decreasing the voltage. The apparatus acquires a current flowing through the sensor cell while the apparatus decreases the voltage in the second voltage control and acquire a SOx concentration of the exhaust gas on the basis of the acquired current.Type: ApplicationFiled: October 5, 2018Publication date: June 20, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazuhisa Matsuda, Kazuhiro Wakao, Keiichiro Aoki
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Publication number: 20190186326Abstract: A SOx concentration acquiring apparatus of an internal combustion engine of the invention acquires sensor currents as SOx concentration currents after a sensor voltage reaches an oxygen decreasing voltage in a reoxidation voltage decreasing control, acquires the sensor current as a base current when the sensor voltage is equal to or lower than the oxygen decreasing voltage in the reoxidation voltage decreasing control, acquires an integration value of differences between the base current and each of the SOx concentration currents, and acquires a SOx concentration of an exhaust gas discharged from an internal combustion engine on the basis of the integration value.Type: ApplicationFiled: October 5, 2018Publication date: June 20, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazuhisa MATSUDA, Kazuhiro WAKAO, Keiichiro AOKI
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Publication number: 20190186327Abstract: In the abnormality diagnosis device which carries out an abnormality diagnosis of the reducing agent adding device by obtaining a diagnostic parameter which is a parameter correlated with an amount of pressure drop in a reducing agent passage in the case where, from a state in which an addition valve has been closed and in which a voltage to be applied to a pump is controlled to a diagnostic voltage so that the pressure in the reducing agent passage becomes a predetermined pressure, the addition valve is made to open in a state where the voltage to be applied to the pump is maintained at the diagnostic voltage, and by making a comparison between the diagnostic parameter and a predetermined threshold value, the abnormality diagnosis is carried out by using the diagnostic parameter or the predetermined threshold value which is corrected based on the pump discharge capacity of the pump.Type: ApplicationFiled: December 13, 2018Publication date: June 20, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Toru KIDOKORO, Makoto OGISO, Takeru SHIRASAWA, Kenji FURUI, Kazuya TAKAOKA
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Publication number: 20190186328Abstract: An abnormality determination device is used in an exhaust gas purification system. The exhaust gas purification system is disposed in an exhaust gas passage of an internal-combustion engine and includes an injection valve for injecting a liquid reducing agent to a NOx purification catalyst for purifying NOx in an exhaust gas, and a pump for pressurizing and supplying the reducing agent to the injection valve via a reducing agent passage. The abnormality determination device includes an acquisition section acquiring a rotation speed of the pump when the injection valve is injecting the reducing agent as an injection time rotation speed; and a determiner determining whether the injection valve has an abnormality based on the injection time rotation speed.Type: ApplicationFiled: December 13, 2018Publication date: June 20, 2019Inventors: Eiji TAKEMOTO, Tomomi Oshima