Having Means Analyzing Composition Of Exhaust Gas Patents (Class 60/276)
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Patent number: 11970991Abstract: A method includes: initiating a low engine-out NOx (LEON) mode by controlling a component of a vehicle having an aftertreatment system to decrease an instantaneous engine-out NOx (EONOx) amount; comparing a temperature of the aftertreatment system during the LEON mode to a warm-operation threshold temperature; responsive to determining that the temperature of the aftertreatment system exceeds the warm-operation threshold temperature, disengaging the LEON mode; responsive to determining that the temperature of the aftertreatment system is below the warm-up operation threshold temperature, comparing information indicative of an operating status of the vehicle to a LEON exit threshold; and disengaging the LEON mode responsive to determining that the information indicative of the operating status of the vehicle during the LEON mode exceeds the LEON exit threshold.Type: GrantFiled: December 5, 2022Date of Patent: April 30, 2024Assignees: Cummins Inc., Scania CV ABInventors: Janardhan Kodavasal, Ved Merchant, Agneya Turlapati, Kristopher R. Bare
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Patent number: 11952932Abstract: A method for controlling exhaust flow in an EATS of a vehicle. A NOx sensor output parameter is monitored. It is determined that the NOx sensor output parameter is below a limit. When the NOx sensor output parameter is below the limit, it is determined that a first part of the exhaust flow should bypass at least a first area of the SCR unit and that a second part of the exhaust flow should be inputted to at least the first area of the SCR unit. It is initiated that the first part is bypassed and that the second part is inputted to at least the first area of the SCR unit. An amount of reductant that should be added to the second part of the exhaust flow is determined. Addition of the amount of reductant is initiated.Type: GrantFiled: January 12, 2023Date of Patent: April 9, 2024Assignee: VOLVO TRUCK CORPORATIONInventors: Irman Svraka, Åsa Högström
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Patent number: 11940350Abstract: Method for diagnosing at least one exhaust gas sensor (22;24;26) of an internal combustion engine (10) disposed in an exhaust duct (21), where ambient air (12) is actively introduced into the exhaust duct (21) by means of a device (27), when an operating state is present in which the internal combustion engine (10) does not produce an exhaust gas mass flow, and the diagnosis of the at least one exhaust gas sensor (22;24;26) disposed in the exhaust duct (21) is subsequently carried out.Type: GrantFiled: October 25, 2022Date of Patent: March 26, 2024Assignee: Robert Bosch GmbHInventors: Bernd Kraewer, Magnus Labbe, Maik Unverricht, Simon Fass
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Patent number: 11920511Abstract: A turbocharger system for diesel trucks includes a compressor in gaseous communication with an engine; a turbine in gaseous communication with the engine via an exhaust manifold; the compressor intakes and compresses air to be pushed to the engine; an air compressor with one or more air tanks, the air compressor to pressurize and store air; one or more pipes connecting the air compressor to the exhaust manifold; a solenoid valve to open and close the one or more pipes between the air compressor and the exhaust manifold; and a control system to operate the solenoid valve; a command from the control system to the solenoid valve opens the solenoid valve to push air from the air compressor to the exhaust manifold to expand and speed up a turbo of the engine.Type: GrantFiled: December 21, 2022Date of Patent: March 5, 2024Inventor: Charles Elders
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Patent number: 11920503Abstract: A vehicle includes an engine, a catalyst, an oxygen concentration detector, and a control device. The catalyst is configured to clean gas emitted from the engine. The oxygen concentration detector is configured to measure oxygen concentration in the catalyst. The control device includes at least one processor and at least one memory coupled to the at least one processor. The at least one processor is configured to perform processing including determining, based on condition of the engine and the oxygen concentration measured by the oxygen concentration detector, whether to prohibit the engine from being stopped.Type: GrantFiled: February 27, 2023Date of Patent: March 5, 2024Assignee: SUBARU CORPORATIONInventor: Shuta Takeda
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Patent number: 11898514Abstract: An internal combustion engine, with an engine regulating device and an exhaust gas aftertreatment device with an SCR catalytic converter for the reduction of at least one NOx component, and with a catalytic converter regulating device, wherein the engine regulating device is prescribed a target value for an NOx mean value of the NOx component of the exhaust gases, which mean value results at an outlet point of the exhaust gas aftertreatment device in relation to a predefinable time period, and the engine regulating device is configured at least in one operating mode to continuously calculate an NOx reference value for the catalytic converter regulating device with consideration of Nox components which have already been emitted and the predefined target value, which reference value is selected in such a way that the predefined target value results at the outlet point of the exhaust gas aftertreatment device at the end of the predefinable time period when the calculated NOx reference value of the catalytic convType: GrantFiled: July 19, 2022Date of Patent: February 13, 2024Assignee: Innio Jenbacher GmbH & Co OGInventors: Michael Url, Georg Arnold, Herbert Kopecek, Nikolaus Spyra
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Patent number: 11891939Abstract: An under-floor catalyst (33) includes a GPF (41) capable of trapping fine exhaust particles in exhaust gas, and a downstream-side catalyst (42) positioned on the downstream side of GPF (41). GPF (41) can be supplied with secondary air. When an internal combustion engine (10) is stopped during travel, the secondary air is supplied to GPF (41) in which the fine exhaust particles are accumulated. At this time, the temperature of GPF (41) is equal to or higher than a predetermined temperature. Thus, a deterioration in the exhaust gas purification performance of under-floor catalyst (33) at the time of the start of internal combustion engine (10) can be suppressed.Type: GrantFiled: June 13, 2019Date of Patent: February 6, 2024Assignee: NISSAN MOTOR CO., LTD.Inventors: Jin Yokoyama, Kouichi Murakami, Akikazu Sakai
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Patent number: 11879406Abstract: A method for operating an internal-combustion engine having an exhaust gas catalyst, a first exhaust gas sensor upstream of the exhaust gas catalyst and a second exhaust gas sensor downstream of the exhaust gas catalyst. A fill level of an exhaust gas component that can be stored in the exhaust gas catalyst is determined using a theoretical catalyst model, into which, as the input value, a signal of the first exhaust gas sensor (a first signal); a signal of the second exhaust gas sensor (a second signal); and a target signal are provided. The target signal corresponds to the signal that would be expected at the determined fill level in the exhaust gas catalyst. The catalyst model is reinitiated when the deviation of the second signal from the target signal exceeds a predetermined threshold value. The fill level is also regulated, and an air-fuel mixture is adjusted.Type: GrantFiled: February 16, 2023Date of Patent: January 23, 2024Assignee: Robert Bosch GmbHInventor: Michael Fey
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Patent number: 11873746Abstract: A vehicle includes a filter, a negative-pressure mechanism, and a first opening and closing mechanism. The filter is disposed in an exhaust passage coupled to an engine. The negative-pressure mechanism is configured to pressurize a portion of the exhaust passage upstream of the filter to a negative pressure less than an atmospheric pressure. The first opening and closing mechanism includes an opening disposed in the exhaust passage, and a valve configured to selectively open and close the opening. The valve is configured to, when the exhaust passage becomes negatively pressurized by the negative-pressure mechanism, open the opening.Type: GrantFiled: April 24, 2023Date of Patent: January 16, 2024Assignee: SUBARU CORPORATIONInventor: Ryo Nagai
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Patent number: 11852088Abstract: A method (200) for determining an amount of hydrocarbons in an exhaust gas (10) downstream of a lean-operation internal-combustion engine (110), comprising the following steps: observing a first catalyst heating mode of the internal-combustion engine (110) at a high catalyst temperature, wherein a predefinable amount of fuel having a predominantly non-combusting portion is introduced into a combustion chamber of the internal-combustion engine (110); determining an actual temperature change downstream of an oxidation catalyst (120) downstream of the internal-combustion engine (110) during the first catalyst heating mode; and determining the amount of hydrocarbons (cHC) in the exhaust gas (10) upstream of the oxidation catalyst (120) based on the actual temperature change. Furthermore, a computing unit (140) and a computer program for carrying out such a method (200) are proposed.Type: GrantFiled: February 17, 2023Date of Patent: December 26, 2023Assignee: Robert Bosch GmbHInventors: Herbert Schoemig, Tobias Pfister
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Patent number: 11846223Abstract: A diesel exhaust treatment system for treating exhaust gas from a diesel engine comprising at least one diesel oxidation catalyst (DOC), at least one diesel particulate filter (DPF), at least one diesel exhaust fluid mixing chamber and at least one selective catalytic reduction converter (SCR). In one desirable embodiment, two DOCs, two DPFs, two SCRs, and two diesel exhaust fluid mixing chambers are arranged in parallel. The disclosed system is configured to reduce back pressure and increase urea vaporization while effectively using available space and providing improved access to components. The system can be coupled to a vehicle frame rail, such as the frame rail of a heavy duty truck.Type: GrantFiled: February 14, 2022Date of Patent: December 19, 2023Assignee: Dinex A/SInventors: Venkata Rama Nataraj Maganti, Ryan Cook, Rogier Van der Ouderaa, Rajiv Krishnakumar, Jim Elkjaer Bebe, Alexandru Serban, Janis Deinis
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Patent number: 11821377Abstract: Provided are methods for operating an internal combustion engine system including: an internal combustion engine provided with a plurality of cylinders, each of which being provided with an air inlet valve and an exhaust gas valve; a fuel supply system configured to supply fuel to the cylinders; an air intake system and an exhaust gas system; a turbocharging arrangement comprising an intake air compressor arranged in the air intake system and an exhaust gas turbine arranged in the exhaust gas system, wherein the intake air compressor is operatively connected to the exhaust gas turbine; a controllable gas feeding device arranged in the air intake system downstream the intake air compressor; an exhaust gas aftertreatment system arranged downstream the exhaust gas turbine; and a wastegate.Type: GrantFiled: August 20, 2019Date of Patent: November 21, 2023Assignee: VOLVO TRUCK CORPORATIONInventors: Fredrik Rahm, Martin Bauer
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Patent number: 11802846Abstract: An oxygen concentration meter includes a zirconia sensor, a resistor, a constant-current circuit, a resistance detection section, and an oxygen concentration detection section. The resistor is connected in parallel to the zirconia sensor. The constant-current circuit is connected in parallel to the zirconia sensor and the resistor, and supplies an electric current. The resistance detection section detects the resistance of the zirconia sensor on the basis of the voltage of the zirconia sensor in accordance with the supplied electric current. The oxygen concentration detection section detects the oxygen concentration of gas to be measured that is supplied to the zirconia sensor, on the basis of the voltage of the zirconia sensor resulting from an oxygen concentration difference between the gas to be measured and reference gas.Type: GrantFiled: February 25, 2022Date of Patent: October 31, 2023Assignee: YOKOGAWA ELECTRIC CORPORATIONInventors: Kouichi Takenaka, Ken Ito
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Patent number: 11795849Abstract: An apparatus for purifying exhaust gas includes an engine for producing power by burning a mixture of air and fuel, and discharging exhaust gas generated in a combustion process to the outside through an exhaust pipe; a first three-way catalyst (TWC) and a second three-way catalyst which are sequentially mounted on the exhaust pipe at a rear end of the engine, and convert noxious gas including carbon monoxide (CO), hydrocarbons (HC), and nitrogen oxide (NOx) contained in the exhaust gas into harmless components through an oxidation-reduction reaction; and an electrically heated catalyst (EHC) mounted between the first three-way catalyst and the second three-way catalyst and heated by application of electric power to transfer heat to the first three-way catalyst and the second three-way catalyst to cause the first three-way catalyst and the second three-way catalyst to reach a catalyst activation temperature.Type: GrantFiled: February 8, 2023Date of Patent: October 24, 2023Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATIONInventor: Jun Sung Park
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Patent number: 11781456Abstract: The invention relates to a method involving the treatment of the pollutants emitted by a vehicle having a heat engine, in which catalyst means (3) are heated, characterised in that the amount of oxygen (OS) in the catalyst means (3) is controlled to be over a minimum amount of oxygen (OS1) by injecting air upstream of said catalyst means (3).Type: GrantFiled: September 8, 2020Date of Patent: October 10, 2023Assignee: NISSAN MOTOR CO., LTD.Inventors: Cathy Batisson, Bruno Peressini
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Patent number: 11739678Abstract: Systems are provided for a sensor. In one example, a system includes a cover for a sensor mounted in a turbine casing, wherein the cover comprises a first opening configured to admit exhaust gases in a first direction normal to gravity and a second opening configured to admit exhaust gases in a second direction opposite gravity.Type: GrantFiled: October 17, 2022Date of Patent: August 29, 2023Assignee: Transportation IP Holdings, LLCInventors: Annaveerayya S, Rushikesh Ingle
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Patent number: 11739675Abstract: An exhaust gas after-treatment system includes a first reactor installed in an exhaust flow path, a second reactor disposed at a downstream side from the first reactor, a first reducing agent injection unit and a second reducing agent injection unit configured to respectively inject a reducing agent toward the exhaust gas to be introduced into the first reactor and the second reactor, a first temperature sensor and a second temperature sensor configured to respectively measure a temperature of the exhaust gas to be introduced into the first reactor and the second reactor, and a control device configured to control whether to inject the reducing agent from the first and second reducing agent injection units and the amount of reducing agent to be injected on the basis of temperature information provided by the first and second temperature sensors.Type: GrantFiled: February 15, 2022Date of Patent: August 29, 2023Assignee: HYUNDAI DOOSAN INFRACORE CO., LTD.Inventors: Dongyoung Jin, Inhyuk Im, Jiseok Kim, Rin Hyun, Taejoong Wang
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Patent number: 11732668Abstract: Methods and systems are provided for detection of cylinder misfire in an engine. In one example, a system may comprise a first cylinder and second cylinder of the engine having exhaust flows combined together in an exhaust system before being combined with other cylinders of the engine. The first cylinder and second cylinder may share an exhaust gas sensor mounted in the exhaust in a position to sense exhaust from the first cylinder and second cylinder, and being positioned before exhaust from other cylinders is combined with sensed exhaust from the first cylinder and second cylinder. The system may further include a control system with instructions stored therein to indicate detected misfire in one or more of the first and second sensors based on an output from the exhaust gas sensor.Type: GrantFiled: February 9, 2022Date of Patent: August 22, 2023Assignee: Ford Global Technologies, LLCInventors: Chris Paul Glugla, Rani Kiwan, Robert Sarow Baskins
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Patent number: 11719178Abstract: A control system for a vehicle, the control system having one or more controllers, the control system being arranged to: determine a likelihood of a NOx adsorber trap of a vehicle requiring purging; determine an efficiency of purging the NOx adsorber trap; determine an operating efficiency of a selective catalyst reduction system of the vehicle; determine a schedule for purging of the NOx adsorber trap of the vehicle in dependence on the likelihood of the NOx adsorber trap requiring purging, the efficiency of purging the NOx adsorber trap, and the operating efficiency of the selective catalyst reduction system; and control purging of the NOx adsorber trap according to the schedule.Type: GrantFiled: March 8, 2022Date of Patent: August 8, 2023Assignee: JAGUAR LAND ROVER LIMITEDInventor: Bhanuprakash Haranahalli Panchakshari
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Patent number: 11661881Abstract: A method for detecting a replacement of a differential pressure sensor arranged for measuring a differential pressure across a filter of an aftertreatment system of a vehicle. The method includes determining a sensor offset value being an offset from a sensor value measured with a differential pressure sensor; adding an adaption value to the measured sensor value to compensate for the offset value to centre the sensor value around a predetermined level; if a sum of a subsequently measured sensor value and the adaption value exceeds a limit value, concluding that the differential pressure sensor has been replaced.Type: GrantFiled: September 27, 2022Date of Patent: May 30, 2023Assignee: VOLVO TRUCK CORPORATIONInventors: Martin Wilhelmsson, Mattias Johansson, Martin Strängberg, Carl Fredrik Mannerfelt
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Patent number: 11629623Abstract: An exhaust gas treatment system includes an exhaust gas pathway configured to receive exhaust gas from an internal combustion engine. The exhaust gas treatment system further includes a treatment element configured to reduce an emissions component of the exhaust gas, and a sample collector positioned within the exhaust gas pathway downstream of the treatment element. The sample collector includes a plurality of inlet openings spaced about a periphery of the exhaust gas pathway and configured to receive a sample of exhaust gas from the exhaust gas pathway, and an outlet in fluid communication with the plurality of inlet openings. A sensor located at the outlet of the sample collector is configured to measure a characteristic of the sample.Type: GrantFiled: May 27, 2021Date of Patent: April 18, 2023Assignee: Deere & CompanyInventors: Craig W. Lohmann, Austin G. Richardson
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Patent number: 11619189Abstract: An engine and one or more aftertreatment subsystems integrated into one system for optimization and control. At least one controller may be connected to the engine and the one or more aftertreatment subsystems. The controller may contain and execute a program for the optimization and control of the one system. Controller may receive information pertinent to the engine and the one or more aftertreatment subsystems for the program. The controller may prescribe setpoints and constraints for measured variables and positions of actuators according to the program to aid in effecting the optimization and control of the one system.Type: GrantFiled: September 23, 2021Date of Patent: April 4, 2023Assignee: Garrett Transportation I Inc.Inventors: Jaroslav Pekar, Daniel Pachner
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Patent number: 11619155Abstract: A metal catalytic converter system employs an engine having an exhaust duct. A multistage metal catalytic converter is mounted in the exhaust duct. A compressor stage is mounted in the exhaust duct, the compressor stage configured to reduce exhaust backpressure created by the converter.Type: GrantFiled: January 13, 2022Date of Patent: April 4, 2023Assignee: The Boeing CompanyInventor: Sijo Varghese
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Patent number: 11608767Abstract: A sensor table mounting system includes an insulating blanket assembly and a senor table. The insulating blanket assembly is configured to surround an external housing surface of an exhaust aftertreatment component housing. The insulating blanket assembly includes an inner blanket surface, an outer blanket surface, and a first restraint. The outer blanket surface is opposite the inner blanket surface. The first restraint includes a first restraint first end that is fixed to the outer blanket surface. The sensor table includes a platform, a first standoff, a second standoff, a first footing, and a second footing. The first footing is offset from the platform by the first standoff and configured to be coupled to the first restraint. The second footing is offset from the platform by the second standoff and configured to be coupled to the first restraint.Type: GrantFiled: January 7, 2020Date of Patent: March 21, 2023Assignee: Cummins Emission Solutions Inc.Inventors: Brandon Scott Degner, John Ringstad, James Klingbeil
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Patent number: 11598281Abstract: A method for operating a drive device having a drive unit producing exhaust gas and an exhaust gas posttreatment device designed as a vehicle catalytic converter for posttreatment of the exhaust gas. A first measured value describing the residual oxygen content in the exhaust gas is measured by a first lambda sensor arranged upstream of the exhaust gas posttreatment device and a second measured value describing the residual oxygen content in the exhaust gas is measured by a second lambda sensor arranged downstream of the exhaust gas posttreatment device. The combustion air ratio of a fuel-air mixture used to operate the drive unit is set during an at least temporarily performed normal operating mode on the basis of the first measured value, the second measured value, and a threshold value for the second measured value.Type: GrantFiled: December 28, 2021Date of Patent: March 7, 2023Assignee: AUDI AGInventor: Bodo Odendall
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Patent number: 11598270Abstract: An internal combustion engine with a plurality of cylinders is a drive device in which the drive torque available can be reduced. The ignition timing which is set at the internal combustion engine is adjusted in the retarded direction starting from an initial ignition timing until the ignition timing corresponds to a threshold ignition timing. To reduce the drive torque further, at least one cylinder, among the plurality of cylinders, is deactivated by suspending fuel injection into the cylinder, and the remaining cylinder(s) continue to be operated with fuel injection using the ignition timing. The remaining cylinders of the internal combustion engine which continue to be operated are supplied with a quantity of fuel which is larger in comparison with an initial quantity of fuel present before the cylinder deactivation, to set a substoichiometric fuel/oxygen ratio.Type: GrantFiled: September 17, 2018Date of Patent: March 7, 2023Assignee: AUDI AGInventors: Bernd Barra, Jan Reiker
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Patent number: 11598238Abstract: An exhaust gas purification device includes a first catalyst, a second catalyst, a bypass pipe, a hydrocarbon adsorbent, and a switching controller. The first catalyst is provided in an exhaust pipe. The second catalyst is provided downstream of the first catalyst in the exhaust pipe. The bypass pipe branches from a first portion of the exhaust pipe. The first portion is located upstream of the second catalyst. The bypass pipe is recoupled to a second portion of the exhaust pipe. The second portion is located upstream of the second catalyst. The hydrocarbon adsorbent is provided in the bypass pipe. The switching controller is configured to switch a flow path of an exhaust gas to the bypass pipe based on a deterioration degree of the first catalyst.Type: GrantFiled: January 6, 2021Date of Patent: March 7, 2023Assignee: SUBARU CORPORATIONInventor: Yasuyoshi Sasaki
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Patent number: 11585285Abstract: A controller for an internal combustion engine is configured to execute a rich air-fuel ratio control for performing fuel injection while setting a target equivalence ratio such that, at recovery from a fuel cutoff process, an air-fuel ratio of air-fuel mixture is richer than a stoichiometric air-fuel ratio. The controller is configured to execute a target equivalence ratio setting process for setting the target equivalence ratio that is maintained during execution of the rich air-fuel ratio control such that the target equivalence ratio increases as an air excess ratio that is calculated from an output value of a second air-fuel ratio sensor at start of the rich air-fuel ratio control increases.Type: GrantFiled: October 22, 2020Date of Patent: February 21, 2023Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takamitsu Mizutani, Yusuke Joh, Masanao Idogawa, Takeshi Genko
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Patent number: 11575037Abstract: A transistor includes a plurality of gate fingers that extend in a first direction and are spaced apart from each other in a second direction, each of the gate fingers comprising at least spaced-apart and generally collinear first and second gate finger segments that are electrically connected to each other. The first gate finger segments are separated from the second gate finger segments in the first direction by a gap region that extends in the second direction. A resistor is disposed in the gap region.Type: GrantFiled: June 22, 2020Date of Patent: February 7, 2023Assignee: WOLFSPEED, INC.Inventors: Khaled Fayed, Simon Wood
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Patent number: 11566552Abstract: An exhaust aftertreatment system includes a catalyst, an exhaust conduit system, a first sensor, a second sensor, a reductant pump, a dosing module, and a reductant delivery system controller. The exhaust conduit system is coupled to the catalyst. The first sensor is coupled to the exhaust conduit system upstream of the catalyst and configured to obtain a current first measurement upstream of the catalyst. The second sensor is coupled to the exhaust conduit system downstream of the catalyst and configured to obtain a current second measurement downstream of the catalyst. The reductant pump is configured to draw reductant from a reductant source. The dosing module is fluidly coupled to the reductant pump and configured to selectively provide the reductant from the reductant pump into the exhaust conduit system upstream of the catalyst. The reductant delivery system controller is communicable with the first sensor, the second sensor, the reductant pump, and the dosing module.Type: GrantFiled: May 16, 2022Date of Patent: January 31, 2023Assignee: Cummins Emission Solutions Inc.Inventors: Jinqian Gong, Arun Kumar Dasari, Gautam Sharma
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Patent number: 11536183Abstract: An exhaust aftertreatment system and associated system for purifying an exhaust gas feedstream of a lean-burn engine includes an oxidation catalyst that is arranged upstream of a selective catalytic reduction (SCR) catalyst. A first NOx sensor is arranged upstream, and a second NOx sensor is arranged downstream of the oxidation catalyst. A controller is arranged to monitor the oxidation catalyst based upon inputs from the first and second NOx sensors. A first NOx parameter is determined via the first NOx sensor, and a second NOx parameter is determined via the second NOx sensor. An NO2 parameter is determined based upon the first NOx parameter, the second NOx parameter, a first relationship for the first and second NOx sensors, and a second relationship for the first and second NOx sensors. The NO2 production of the oxidation catalyst is evaluated based upon the NO2 parameter.Type: GrantFiled: September 22, 2021Date of Patent: December 27, 2022Assignee: PACCAR Inc.Inventors: Trevor Joseph Ott, Cynthia Chaffin Webb, Charles Wayne Reinhardt Swart
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Patent number: 11492991Abstract: The present invention refers to a method for operating an internal combustion engine in a transition operating mode, comprising the steps of determining an initial fuel oxidizer ratio threshold and a demanded fuel oxidizer ratio for a fuel mixture to be supplied to a combustion chamber of the engine. If the demanded fuel oxidizer ratio exceeds the initial fuel oxidizer ratio threshold, the engine is temporally operated in a raised response mode, in which a fuel oxidizer ratio threshold is increased from the initial fuel oxidizer ratio threshold to a raised fuel oxidizer ratio threshold, and a fuel mixture having the demanded fuel oxidizer ratio is supplied into the combustion chamber of the engine.Type: GrantFiled: November 7, 2019Date of Patent: November 8, 2022Assignee: Perkins Engines Company LimitedInventors: Chris Burgess, Kane Lok, Ben Icenhower
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Patent number: 11486287Abstract: A control device is configured to execute a process of calculating an increase amount of deterioration obtained by subtracting from a first degree of deterioration that is a degree of deterioration of the three-way catalyst during execution of the oxygen supply process a second degree of deterioration that is a degree of deterioration of a three-way catalyst in a case where an oxygen supply process of supplying oxygen to an exhaust passage is assumed not to be executed, a process of calculating an integrated value of the increase amount of deterioration, and a process of executing a deterioration reduction process of reducing a rate of deterioration of the three-way catalyst in a case where the calculated integrated value is equal to or larger than a first determination value.Type: GrantFiled: December 20, 2021Date of Patent: November 1, 2022Assignee: Toyota Jidosha Kabushiki KaishaInventor: Hitoki Sugimoto
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Patent number: 11480088Abstract: A method for operating a drive device having a drive unit producing exhaust gas and an exhaust gas posttreatment device designed as a vehicle catalytic converter for posttreatment of the exhaust gas. A first measured value describing the residual oxygen content in the exhaust gas is measured by a first lambda sensor arranged upstream of the exhaust gas posttreatment device and a second measured value describing the residual oxygen content in the exhaust gas is measured by a second lambda sensor arranged downstream of the exhaust gas posttreatment device. The combustion air ratio of a fuel-air mixture used to operate the drive unit is set during an at least temporarily performed normal operating mode on the basis of the first measured value, the second measured value, and a threshold value for the second measured value.Type: GrantFiled: December 27, 2021Date of Patent: October 25, 2022Assignee: AUDI AGInventor: Bodo Odendall
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Patent number: 11473477Abstract: A catalyst deterioration detection device is provided to detect deterioration of a catalyst provided in an exhaust passage of an internal combustion engine. The catalyst deterioration detection device includes a storage device and processing circuitry. The storage device stores map data specifying a mapping that uses time series data of an excess amount variable in a first predetermined period and time series data of a downstream detection variable in a second predetermined period as inputs to output a deterioration level variable. The processing circuitry executes an acquisition process that acquires data, a deterioration level variable calculation process that calculates a deterioration level variable of the catalyst based on an output of the mapping using the data acquired by the acquisition process as an input. The map data includes data that is learned through machine learning.Type: GrantFiled: September 16, 2021Date of Patent: October 18, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Harufumi Muto, Haruki Oguri, Akihiro Katayama, Yosuke Hashimoto
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Patent number: 11467120Abstract: A gas sensor includes a gas sensor element for detecting a specific gas concentration in measured gas. The gas sensor element includes a solid electrolyte, a measured gas side electrode into which measured gas is introduced through a porous diffusion resistance layer, a reference gas side electrode facing a reference gas chamber, and a diffusion space portion between the porous diffusion resistance layer and the measured gas side electrode. The porous diffusion resistance layer has a measured gas inlet opened to an element outer surface and a measured gas outlet opened to the diffusion space portion. A relationship between a distance between the inlet and the outlet and a distance between the outlet and the measured gas side electrode is expressed by 0<L1/(L1+L2)<0.4.Type: GrantFiled: October 25, 2019Date of Patent: October 11, 2022Assignee: DENSO CORPORATIONInventors: Yasutaka Kamiya, Tatsuki Ujiyama
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Patent number: 11467063Abstract: A probe carrier arrangement, especially for an exhaust system of an internal combustion engine, includes a probe socket (14) provided at a probe carrier body (12). The probe socket (14) has at least one insert-receiving opening (24) extending in a direction of an insert-receiving opening longitudinal axis (E). A probe carrier insert (28) is arranged in the insert-receiving opening (24). The probe carrier insert (28) has at least one probe-receiving opening (36) extending in a direction of a probe-receiving opening longitudinal axis (S).Type: GrantFiled: February 24, 2020Date of Patent: October 11, 2022Assignee: Purem GmbHInventors: Ralf Mohr, Veronique Guerin, Kresimir Jambrosic, Ulrich Sigel, Arnulf Spieth, Michael Vogel, Philippe Leisten
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Patent number: 11434806Abstract: The catalyst deterioration detection system 1 comprises an air-fuel ratio detection device 41 detecting an air-fuel ratio of an exhaust gas flowing out from the catalyst 20, an air-fuel ratio control part 71, and a deterioration judgment part 72. The air-fuel ratio control part is configured to perform a lean control making the air-fuel ratio of the inflowing exhaust gas leaner than a stoichiometric air-fuel ratio and a rich control making the air-fuel ratio of the inflowing exhaust gas richer than the stoichiometric air-fuel ratio. The deterioration judgment part is configured to calculate an amplitude of an air-fuel ratio of an exhaust gas flowing out from the catalyst due to the lean control and the rich control based on an output of the air-fuel ratio detection device and judge that the catalyst is deteriorating if the amplitude is equal to or greater than a threshold value.Type: GrantFiled: November 12, 2020Date of Patent: September 6, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kenji Furui, Go Hayashita, Yoichi Kadota
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Patent number: 11434841Abstract: Methods and systems are provided for a NOx sensor. In one example, a method includes heating a NOx sensor during a vehicle off in response to a cumulative heat energy applied to the NOx.Type: GrantFiled: December 22, 2020Date of Patent: September 6, 2022Assignee: Ford Global Technologies, LLCInventors: Frank M Korpics, Brett Gayney, Dean Pennala, William Goodwin, Michiel J. Van Nieuwstadt
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Patent number: 11421622Abstract: A vehicle controller includes processing circuitry and a storage device. The storage device stores relationship specifying data that specifies a relationship between a state of a vehicle and at least one action variable. The at least one action variable is a variable related to operation of an operating unit of an internal combustion engine. The processing circuitry is configured to execute an obtaining process that obtains a state of the vehicle, an operating process that operates the operating unit based on a value of the at least one action variable, a reward calculation process, an updating process that updates the relationship specifying data, and a determination process that determines whether the internal combustion engine has deteriorated. The determination process is executed on condition that at least one of the at least one action variable equals a predetermined value.Type: GrantFiled: December 9, 2020Date of Patent: August 23, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yosuke Hashimoto, Akihiro Katayama, Yuta Oshiro, Kazuki Sugie, Naoya Oka
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Patent number: 11415033Abstract: A method for operating a petrol engine, in which air is introduced into an exhaust tract through which exhaust gas from the petrol engine can flow, bypassing the petrol engine, includes introducing the air into the exhaust tract at a point arranged downstream of a first three-way catalytic converter arranged in the exhaust tract and upstream of a second three-way catalytic converter arranged in the exhaust tract downstream of the first three-way catalytic converter, while the petrol engine is operated with a sub-stoichiometric combustion air ratio, where a desulphurization of the second three-way catalytic converter is effected.Type: GrantFiled: March 5, 2019Date of Patent: August 16, 2022Assignee: Daimler AGInventors: Guenter Hay, Kai Hoffmann, Tobias Schoeffler, Michael Stiller
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Patent number: 11377994Abstract: A method for exhaust gas aftertreatment in a gasoline engine and an exhaust gas aftertreatment system are provided. In the method, two catalytic converters arranged in the exhaust gas tract of the gasoline engine are operated in different states. A first three-way catalytic converter is operated in a slightly low-oxygen range, and a second three-way catalytic converter is operated in a slightly oxygen-rich range. Secondary air is furthermore blown into the exhaust gas tract between the two three-way catalytic converters. It is thereby possible to reduce the output of emissions of the gasoline engine to a great extent. An exhaust gas aftertreatment system is likewise explained.Type: GrantFiled: April 20, 2021Date of Patent: July 5, 2022Assignee: Vitesco Technologies GmbHInventor: Gerhard Haft
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Patent number: 11365667Abstract: The catalyst deterioration detection system 1 comprises an air-fuel ratio detection device 41 detecting an air-fuel ratio of an exhaust gas flowing out from the catalyst 20, an air-fuel ratio control part 71, and a deterioration judgment part 72. The air-fuel ratio control part is configured to perform a lean control making the air-fuel ratio of the inflowing exhaust gas leaner than a stoichiometric air-fuel ratio and a rich control making the air-fuel ratio of the inflowing exhaust gas richer than the stoichiometric air-fuel ratio. The deterioration judgment part is configured to calculate an amplitude of an air-fuel ratio of an exhaust gas flowing out from the catalyst due to the lean control and the rich control based on an output of the air-fuel ratio detection device and judge that the catalyst is deteriorating if the amplitude is equal to or greater than a threshold value.Type: GrantFiled: November 12, 2020Date of Patent: June 21, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kenji Furui, Go Hayashita, Yoichi Kadota
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Patent number: 11365698Abstract: A method for controlling and regulating an internal combustion engine with exhaust gas recirculation, in which an EGR rate is determined by a Kaiman filter from calculated and measured variables of the gas path and from calculated and measured variables of combustion. A method for the model-based control and regulation of an internal combustion engine includes calculating injection system set values for controlling the injection system actuators as a function of a set torque by a combustion model. Gas path set values for controlling the gas path actuators are calculated as a function of an EGR rate by a gas path model. A measure of quality is calculated by an optimizer as a function of the injection system and gas path set values. The measure of quality is minimized by the optimizer by changing the injection system and gas path set values within a prediction horizon.Type: GrantFiled: July 20, 2018Date of Patent: June 21, 2022Assignee: MTU FRIEDRICHSHAFEN GMBHInventors: Michael Buchholz, Knut Graichen, Karsten Harder, Jens Niemeyer
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Patent number: 11359532Abstract: An exhaust aftertreatment system includes a catalyst, an exhaust conduit system, a first sensor, a second sensor, a reductant pump, a dosing module, and a reductant delivery system controller. The exhaust conduit system is coupled to the catalyst. The first sensor is coupled to the exhaust conduit system upstream of the catalyst and configured to obtain a current first measurement upstream of the catalyst. The second sensor is coupled to the exhaust conduit system downstream of the catalyst and configured to obtain a current second measurement downstream of the catalyst. The reductant pump is configured to draw reductant from a reductant source. The dosing module is fluidly coupled to the reductant pump and configured to selectively provide the reductant from the reductant pump into the exhaust conduit system upstream of the catalyst. The reductant delivery system controller is communicable with the first sensor, the second sensor, the reductant pump, and the dosing module.Type: GrantFiled: January 10, 2020Date of Patent: June 14, 2022Assignee: CUMMINS EMISSION SOLUTIONS INC.Inventors: Jinqian Gong, Arun Kumar Dasari, Gautam Sharma
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Patent number: 11339702Abstract: Systems and methods are described for performing a diagnostic on an exhaust gas aftertreatment system. A gas entry parameter into a portion of an exhaust system of an engine is determined. In response to determining that the gas entry parameter is less than the predetermined threshold, a level of NH3 in the exhaust gas is determined. In response to determining that the level of NH3 is above a threshold value, degradation of a particulate filter of the exhaust gas aftertreatment system is indicated.Type: GrantFiled: September 15, 2020Date of Patent: May 24, 2022Assignee: Ford Global Technologies, LLCInventors: David Townson, Jim Bromham
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Patent number: 11333106Abstract: The invention relates to an internal combustion engine with an air intake system and an exhaust system is embodied as an internal combustion engine, in particular a gasoline engine, that is charged by means of an exhaust gas turbocharger. At least one three-way catalytic converter is arranged in the exhaust system of the internal combustion engine. Furthermore, a low-pressure exhaust gas recirculation system is provided that connects the exhaust system downstream from a turbine of the exhaust gas turbocharger and upstream from the at least one three-way catalytic converter to the air intake system upstream from a compressor of the exhaust gas turbocharger. The invention further relates to a method for exhaust aftertreatment of such an internal combustion engine.Type: GrantFiled: December 10, 2019Date of Patent: May 17, 2022Assignee: VOLKSWAGEN AKIIHNGESELLSCHAFTInventors: Falk-Christian Baron Von Ceumern-Lindenstjerna, Christoph Nee, Sebastian Gehrke, Mathias Hauptvogel
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Patent number: 11326496Abstract: An ECU stores and holds in a memory unit NOx information which is information concerning NOx in an exhaust gas flowing through an exhaust system of an onboard engine of a vehicle or NOx purification by a catalyst placed in the exhaust system. The ECU includes a parameter acquisition unit that acquires an NOx parameter, which is an outflow quantity of NOx flowing out to a downstream side of the catalyst or a correlation value correlating to the outflow quantity of NOx, according to a working state of the engine, an integrated value computation unit that computes a parameter integrated value by integrating NOx parameters acquired by the parameter acquisition unit, and a storage processing unit that stores in the memory unit the parameter integrated value as the NOx information.Type: GrantFiled: April 13, 2020Date of Patent: May 10, 2022Assignee: DENSO CORPORATIONInventor: Satoru Osaki
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Patent number: 11313267Abstract: A particulate matter sensor includes a sensor element that includes a measurement member and a heater. An anomaly determiner performs determination that there is a break fault in a signal path of the measurement signal in response to both: (1) A first determiner, which determines whether a first measurement value of the measurement signal is higher than or equal to a predetermined normal determination threshold while the measurement voltage is applied between the measurement electrodes and the temperature of the measurement member is controlled at a first determination temperature, making a negative determination; and (2) A second determiner, which performs negative determination while the measurement voltage is applied between the measurement electrodes and the temperature of the measurement member is controlled within a predetermined temperature range that is higher than the first determination temperature and lower than a second determination temperature, making a negative determination.Type: GrantFiled: August 3, 2021Date of Patent: April 26, 2022Assignee: DENSO CORPORATIONInventors: Mikiyasu Matsuoka, Tomoo Kawase, Toshiyuki Ishii
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Patent number: 11293362Abstract: An engine system for an off-highway vehicle, comprising: a diesel engine configured to drive a driveline of the vehicle; an after-treatment arrangement configured to reduce emissions from the engine system; an after-treatment heating element configured to raise an operating temperature of the after-treatment arrangement; an electric energy storage device; and a controller configured to direct energy from the electric energy storage device to the after-treatment heating element in order to raise the operating temperature of the after-treatment arrangement.Type: GrantFiled: December 10, 2019Date of Patent: April 5, 2022Assignee: J. C. Bamford Excavators LimitedInventor: Alan Tolley