Patents by Inventor Tamas Szailer
Tamas Szailer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10883971Abstract: An exemplary exhaust test tog apparatus includes a housing defining an exhaust flow path extending from an inlet to an outlet. At least a portion of the housing is selectably rotatable relative to an exhaust aftertreatment system. An arm extends from the housing into the exhaust flow path. An exhaust probe configured to measure an exhaust constituent is coupled with the arm and positioned at a location in the exhaust flow path. An actuator is configured to extend and retract the arm to vary the location of the exhaust probe in the exhaust flow path. The exhaust probe is moveable to a plurality of locations within the exhaust flow path through a combination of rotation of the housing and extension and retraction of the arm.Type: GrantFiled: October 18, 2019Date of Patent: January 5, 2021Assignee: Cummins Emission Solutions Inc.Inventors: Douglas A. Mitchell, Tamas Szailer, Alonzo Scott Cole, Newton Crenshaw
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Patent number: 10876450Abstract: An exhaust gas catalyst system that includes at least one exhaust canister including an inlet separated from an outlet with catalytic components positioned between the inlet and outlet. The at least one exhaust canister receives a flow of exhaust gas. The at least one exhaust canister includes a pair of concentric passages formed therein including a central passage and an outer passage. A split flap valve is positioned in the inlet. An actuator is coupled to the split flap valve. A control unit is operably connected to the actuator and selectively moves the split flap valve closing one of the concentric passages and locally heating a portion of the catalytic components.Type: GrantFiled: May 22, 2019Date of Patent: December 29, 2020Assignee: FEV Europe GmbHInventors: Satyum Joshi, Mufaddel Z. Dahodwala, Erik Koehler, Michael Franke, Tamas Szailer
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Publication number: 20200370455Abstract: An exhaust gas catalyst system that includes at least one exhaust canister including an inlet separated from an outlet with catalytic components positioned between the inlet and outlet. The at least one exhaust canister receives a flow of exhaust gas. The at least one exhaust canister includes a pair of concentric passages formed therein including a central passage and an outer passage. A split flap valve is positioned in the inlet. An actuator is coupled to the split flap valve. A control unit is operably connected to the actuator and selectively moves the split flap valve closing one of the concentric passages and locally heating a portion of the catalytic components.Type: ApplicationFiled: May 22, 2019Publication date: November 26, 2020Inventors: Satyum Joshi, Mufaddel Z. Dahodwala, Erik Koehler, Michael Franke, Tamas Szailer
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Publication number: 20200049680Abstract: An exemplary exhaust test tog apparatus includes a housing defining an exhaust flow path extending from an inlet to an outlet. At least a portion of the housing is selectably rotatable relative to an exhaust aftertreatment system. An arm extends from the housing into the exhaust flow path. An exhaust probe configured to measure an exhaust constituent is coupled with the arm and positioned at a location in the exhaust flow path. An actuator is configured to extend and retract the arm to vary the location of the exhaust probe in the exhaust flow path. The exhaust probe is moveable to a plurality of locations within the exhaust flow path through a combination of rotation of the housing and extension and retraction of the arm.Type: ApplicationFiled: October 18, 2019Publication date: February 13, 2020Applicant: CUMMINS EMISSION SOLUTIONS INC.Inventors: Douglas A. Mitchell, Tamas Szailer, Alonzo Scott Cole, Newton Crenshaw
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Patent number: 10488379Abstract: An exemplary exhaust testing apparatus includes a housing defining an exhaust flow path extending from an inlet to an outlet. At least a portion of the housing is selectably rotatable relative to an exhaust aftertreatment system. An arm extends from the housing into the exhaust flow path. An exhaust probe configured to measure an exhaust constituent is coupled with the arm and positioned at a location in the exhaust flow path. An actuator is configured to extend and retract the arm to vary the location of the exhaust probe in the exhaust flow path. The exhaust probe is moveable to a plurality of locations within the exhaust flow path through a combination of rotation of the housing and extension and retraction of the arm.Type: GrantFiled: October 21, 2013Date of Patent: November 26, 2019Assignee: Cummins Emission Solutions Inc.Inventors: Douglas A. Mitchell, Tamas Szailer, Alonzo Scott Cole, Newton Crenshaw
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Patent number: 10480369Abstract: An exhaust after-treatment system is coupled to an exhaust pipe of a diesel internal combustion engine (ICE) for treating an exhaust gas. The exhaust after-treatment system includes a diesel oxidation catalyst (DOC) and a SCR coated diesel particulate filter (SDPF) serially disposed in a downstream path of the exhaust gas. An electrically heated catalyst (EHC) is coupled to the DOC and is configured to electrically heat the DOC for reducing the requisite time to reach a DOC light-off temperature. A controller is operably coupled with the DOC and the EHC and is configured to operate the EHC in response to a mid bed temperature of the DOC. More specifically, the controller is configured to supply power to the EHC when the DOC mid bed temperature is below a predetermined value and discontinue the power supply to the EHC when the DOC mid bed temperature is greater than the predetermined value.Type: GrantFiled: September 26, 2018Date of Patent: November 19, 2019Assignee: FEV NORTH AMERICA INC.Inventors: Mufaddel Dahodwala, Tamas Szailer, Satyum Joshi, Erik Koehler, Michael Franke
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Patent number: 9708953Abstract: Methods and apparatuses for monitoring an oxidation catalyst in a vehicle exhaust system include a diesel internal combustion engine with an exhaust system that has an EGR, a DOC/DPF downstream from the EGR, an SCR catalyst downstream of the DOC/DPF, a first NOx sensor located upstream of the DOC/DPF, and a second NOx sensor located downstream of the SCR catalyst. A monitoring cycle of the exhaust system during operation of the diesel ICE includes executing a DPF regeneration event, shutting off the EGR, terminating urea dosing to the SCR catalyst, emptying NH3 storage in the SCR catalyst, and intrusively maintaining the temperature of the DOC/DPF within a predetermined temperature range. Readings from the first NOx sensor and the second NOx sensor allow for a ratio between first NOx sensor readings and second NOx sensor readings, the ratio providing an indication as to whether or not the DOC/DPF is failing or operating properly.Type: GrantFiled: March 1, 2016Date of Patent: July 18, 2017Assignee: FEV North America, Inc.Inventors: Tamas Szailer, Harsha Nanjundaswamy, Joel Deussen, Dean Tomazic
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Patent number: 9581099Abstract: An exhaust diagnostic system. The system includes a diesel engine having an exhaust system with a diesel particulate filter (DPF), a diesel oxidation catalyst (DOC), a selective catalytic reduction (SCR) catalyst, a first NOx sensor located upstream of the SCR catalyst and a second NOx sensor located downstream of the SCR catalyst. In addition, an engine control unit (ECU) is in electronic communication with the first NOx sensor and the second NOx sensor. An SCR coordinator can be included and be configured to execute a non-intrusive SCR deNOx efficiency test, an intrusive SCR/DOC deNOx efficiency test and an intrusive DOC non-methane hydrocarbon (NMHC) conversion efficiency test on the exhaust system. As a result of the conversion efficiency tests, a distinction can be made as to whether the SCR catalyst or DOC is failing.Type: GrantFiled: August 18, 2015Date of Patent: February 28, 2017Assignee: FEV North America, Inc.Inventors: Tamas Szailer, Harsha Nanjundaswamy, Joel Deussen, Dean Tomazic
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Publication number: 20170051693Abstract: An exhaust diagnostic system. The system includes a diesel engine having an exhaust system with a diesel particulate filter (DPF), a diesel oxidation catalyst (DOC), a selective catalytic reduction (SCR) catalyst, a first NOx sensor located upstream of the SCR catalyst and a second NOx sensor located downstream of the SCR catalyst. In addition, an engine control unit (ECU) is in electronic communication with the first NOx sensor and the second NOx sensor. An SCR coordinator can be included and be configured to execute a non-intrusive SCR deNOx efficiency test, an intrusive SCR/DOC deNOx efficiency test and an intrusive DOC non-methane hydrocarbon (NMHC) conversion efficiency test on the exhaust system. As a result of the conversion efficiency tests, a distinction can be made as to whether the SCR catalyst or DOC is failing.Type: ApplicationFiled: August 18, 2015Publication date: February 23, 2017Inventors: Tamas Szailer, Harsha Nanjundaswamy, Joel Deussen, Dean Tomazic
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Patent number: 9327282Abstract: Described herein is a selective catalytic reduction (SCR) catalyst treatment system that includes a vanadium-based SCR catalyst contaminated with a water-soluble contaminant. The SCR catalyst treatment system also includes a water delivery system that is configured to apply water to the vanadium-based SCR catalyst to remove the water-soluble contaminant from the vanadium-based SCR catalyst.Type: GrantFiled: May 6, 2015Date of Patent: May 3, 2016Assignee: Cummins IP, Inc.Inventors: Aleksey Yezerets, Neal W. Currier, Xu Chen, Junhui Li, Krishna Kamasamudram, Hongbin Ma, Tamas Szailer, Cary Henry, Roger Fox
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Patent number: 9279394Abstract: An internal combustion engine system includes a spark-ignited internal combustion engine powered by a gaseous fuel. The engine system also includes an air intake in air providing communication with the internal combustion engine. Further, the engine system includes an exhaust system in exhaust gas receiving communication with the internal combustion engine. The exhaust system includes a methane oxidation catalyst through which at least a portion of the exhaust gas flows and an exhaust gas recirculation line in exhaust gas providing communication with the air intake.Type: GrantFiled: June 30, 2015Date of Patent: March 8, 2016Assignee: Cummins IP, Inc.Inventors: Leon A. LaPointe, Edward J. Lyford-Pike, Daniel J. Mohr, Ashish Gupta, Aleksey Yezerets, Neal W. Currier, Tamas Szailer, Thomas M. Yonushonis
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Patent number: 9228468Abstract: Systems, methods and apparatus are disclosed for targeted regeneration of a catalyst device in an exhaust aftertreatment system of an internal combustion engine. The targeted regeneration can include interpreting, initiating, and/or completing a regeneration event for an SCR catalyst or other type of catalyst in response to a catalyst deactivation condition. A catalyst regeneration event includes at least one of exposing the catalyst to a sufficiently high temperature over a time period that removes contaminants from the catalyst and manipulation of the exhaust gas composition to initiate and/or accelerate removal of contaminants from the catalyst.Type: GrantFiled: February 4, 2014Date of Patent: January 5, 2016Assignee: Cummins Inc.Inventors: Aleksey Yezerets, Tamas Szailer, Krishna Kamasamudram, Neal W. Currier, Richard J. Ancimer
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Publication number: 20150300297Abstract: An internal combustion engine system includes a spark-ignited internal combustion engine powered by a gaseous fuel. The engine system also includes an air intake in air providing communication with the internal combustion engine. Further, the engine system includes an exhaust system in exhaust gas receiving communication with the internal combustion engine. The exhaust system includes a methane oxidation catalyst through which at least a portion of the exhaust gas flows and an exhaust gas recirculation line in exhaust gas providing communication with the air intake.Type: ApplicationFiled: June 30, 2015Publication date: October 22, 2015Applicant: CUMMINS IP, INC.Inventors: Leon A. LaPointe, Edward J. Lyford-Pike, Daniel J. Mohr, Ashish Gupta, Aleksey Yezerets, Neal W. Currier, Tamas Szailer, Thomas M. Yonushonis
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Publication number: 20150241400Abstract: An exemplary exhaust testing apparatus includes a housing defining an exhaust flow path extending from an inlet to an outlet. At least a portion of the housing is selectably rotatable relative to an exhaust aftertreatment system. An arm extends from the housing into the exhaust flow path. An exhaust probe configured to measure an exhaust constituent is coupled with the arm and positioned at a location in the exhaust flow path. An actuator is configured to extend and retract the arm to vary the location of the exhaust probe in the exhaust flow path. The exhaust probe is moveable to a plurality of locations within the exhaust flow path through a combination of rotation of the housing and extension and retraction of the arm.Type: ApplicationFiled: October 21, 2013Publication date: August 27, 2015Applicant: Cummins Emission Solutions Inc.Inventors: Douglas A. Mitchell, Tamas Szailer, Scott Cole Alonzo, Crenshaw Newton
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Publication number: 20150231625Abstract: Described herein is a selective catalytic reduction (SCR) catalyst treatment system that includes a vanadium-based SCR catalyst contaminated with a water-soluble contaminant. The SCR catalyst treatment system also includes a water delivery system that is configured to apply water to the vanadium-based SCR catalyst to remove the water-soluble contaminant from the vanadium-based SCR catalyst.Type: ApplicationFiled: May 6, 2015Publication date: August 20, 2015Applicant: Cummins Inc.Inventors: Aleksey YEZERETS, Neal W. CURRIER, Xu CHEN, Junhui LI, Krishna KAMASAMUDRAM, Hongbin MA, Tamas SZAILER, Cary HENRY, Roger FOX
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Publication number: 20150218992Abstract: Systems, methods and apparatus are disclosed for targeted regeneration of a catalyst device in an exhaust aftertreatment system of an internal combustion engine. The targeted regeneration can include interpreting, initiating, and/or completing a regeneration event for an SCR catalyst or other type of catalyst in response to a catalyst deactivation condition. A catalyst regeneration event includes at least one of exposing the catalyst to a sufficiently high temperature over a time period that removes contaminants from the catalyst and manipulation of the exhaust gas composition to initiate and/or accelerate removal of contaminants from the catalyst.Type: ApplicationFiled: February 4, 2014Publication date: August 6, 2015Applicant: Cummins Inc.Inventors: Aleksey Yezerets, Tamas Szailer, Krishna Kamasamudram, Neal W. Currier, Richard J. Ancimer
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Patent number: 9051862Abstract: Described herein is a selective catalytic reduction (SCR) catalyst treatment system that includes a vanadium-based SCR catalyst contaminated with a water-soluble contaminant. The SCR catalyst treatment system also includes a water delivery system that is configured to apply water to the vanadium-based SCR catalyst to remove the water-soluble contaminant from the vanadium-based SCR catalyst.Type: GrantFiled: September 6, 2013Date of Patent: June 9, 2015Assignee: CUMMINS IP, INC.Inventors: Aleksey Yezerets, Neal W. Currier, Xu Chen, Junhui Li, Krishna Kamasamudram, Hongbin Ma, Tamas Szailer, Cary Henry, Roger Fox
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Publication number: 20150107226Abstract: An internal combustion engine system of the present application includes a spark-ignited internal combustion engine that is powered by a gaseous fuel. The engine system also includes an exhaust system that is in exhaust gas receiving communication with the internal combustion engine. The exhaust system includes an exhaust treatment component. Additionally, the exhaust system includes a liquid fuel injection system in liquid fuel injecting communication with the exhaust system to inject liquid fuel into exhaust gas upstream of the exhaust treatment component.Type: ApplicationFiled: October 18, 2013Publication date: April 23, 2015Inventors: Tamas Szailer, Joseph P. McIntier
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Publication number: 20150072855Abstract: Described herein is a selective catalytic reduction (SCR) catalyst treatment system that includes a vanadium-based SCR catalyst contaminated with a water-soluble contaminant. The SCR catalyst treatment system also includes a water delivery system that is configured to apply water to the vanadium-based SCR catalyst to remove the water-soluble contaminant from the vanadium-based SCR catalyst.Type: ApplicationFiled: September 6, 2013Publication date: March 12, 2015Inventors: Aleksey Yezerets, Neal W. Currier, Xu Chen, Junhui Li, Krishna Kamasamudram, Hongbin Ma, Tamas Szailer, Cary Henry, Roger Fox
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Publication number: 20140069086Abstract: An internal combustion engine system includes a spark-ignited internal combustion engine powered by a gaseous fuel. The engine system also includes an air intake in air providing communication with the internal combustion engine. Further, the engine system includes an exhaust system in exhaust gas receiving communication with the internal combustion engine. The exhaust system includes a methane oxidation catalyst through which at least a portion of the exhaust gas flows and an exhaust gas recirculation line in exhaust gas providing communication with the air intake.Type: ApplicationFiled: September 13, 2012Publication date: March 13, 2014Inventors: LEON A. LAPOINTE, EDWARD J. LYFORD-PIKE, DANIEL J. MOHR, ASHISH GUPTA, ALEKSEY YEZERETS, NEAL W. CURRIER, TAMAS SZAILER, THOMAS YONUSHONIS