Patents by Inventor Andrew M. Denis
Andrew M. Denis 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: 11534728Abstract: A nozzle including a first end and a second end. The first end includes at least a first inlet and a second inlet and the second end includes a plurality of outlets. An exterior surface extends from the first end to the second end of the nozzle. A plurality of vanes are disposed on the exterior surface and extend from the first end to the second end of the nozzle. A plurality of channels form along the exterior surface of the nozzle.Type: GrantFiled: November 15, 2018Date of Patent: December 27, 2022Assignee: Caterpillar Inc.Inventors: Satya Ramakrishna Manda Venkata Naga, Kevin L. Martin, Paul Arthur Zwart, Andrew M. Denis
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Patent number: 11156145Abstract: An emission module for treating exhaust gas including a housing, a first catalyst substrate positioned within the housing and having an inlet end, the first catalyst substrate defining a plurality of flow passages extending longitudinally from the inlet end, and a first restrictor plate positioned at the inlet end of the first catalyst substrate to block exhaust flow through a first portion of the plurality of flow passages while allowing exhaust flow through the remainder of the plurality of flow passages.Type: GrantFiled: January 24, 2020Date of Patent: October 26, 2021Assignee: Caterpillar Inc.Inventors: Wesley Gene Benson, Andrew M. Denis, Joshua Lynn Ratts, Jack Albert Merchant
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Patent number: 11098631Abstract: A NOx sensor protection system includes a flow control device forming an internal chamber with exhaust and shield gas ports and a NOx sensor. The flow control device is configured to selectively allow a flow of exhaust from an exhaust pipe to the NOx sensor when an internal combustion engine is operated with a first fuel, and to selectively direct shield gas from the shield gas port at an angle of 135° to 180° to the NOx sensor to inhibit the flow of exhaust from the exhaust pipe to the NOx sensor when the engine is operated with a second fuel.Type: GrantFiled: July 26, 2019Date of Patent: August 24, 2021Assignee: Caterpillar Inc.Inventors: Andrew M. Denis, Min Xiao, Wengang Chen, Zhenhua Zhang, Qiang Zhu, Mohamed I. Daoud
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Publication number: 20210231043Abstract: An emission module for treating exhaust gas including a housing, a first catalyst substrate positioned within the housing and having an inlet end, the first catalyst substrate defining a plurality of flow passages extending longitudinally from the inlet end, and a first restrictor plate positioned at the inlet end of the first catalyst substrate to block exhaust flow through a first portion of the plurality of flow passages while allowing exhaust flow through the remainder of the plurality of flow passages.Type: ApplicationFiled: January 24, 2020Publication date: July 29, 2021Applicant: Caterpillar Inc.Inventors: Wesley Gene Benson, Andrew M. Denis, Joshua Lynn Ratts, Jack Albert Merchant
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Patent number: 10953373Abstract: A nozzle including a first channel, a second channel annularly disposed around the first channel, and a plurality of third channels fluidly connected to the second channel. The nozzle includes an interior cavity having a first inlet fluidly connected to the first channel and a plurality of second inlets. Individual second inlets of the plurality of second inlets fluidly connect to individual third channels of the plurality of third channels. The interior cavity includes an outlet and an impinging surface located opposite the first inlet.Type: GrantFiled: November 15, 2018Date of Patent: March 23, 2021Assignee: Caterpillar Inc.Inventors: Satya Ramakrishna Manda Venkata Naga, Kevin L. Martin, Paul Arthur Zwart, Andrew M. Denis
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Publication number: 20210025314Abstract: A NOx sensor protection system includes a flow control device forming an internal chamber with exhaust and shield gas ports and a NOx sensor. The flow control device is configured to selectively allow a flow of exhaust from an exhaust pipe to the NOx sensor when an internal combustion engine is operated with a first fuel, and to selectively direct shield gas from the shield gas port at an angle of 135° to 180° to the NOx sensor to inhibit the flow of exhaust from the exhaust pipe to the NOx sensor when the engine is operated with a second fuel.Type: ApplicationFiled: July 26, 2019Publication date: January 28, 2021Applicant: Caterpillar Inc.Inventors: Andrew M. Denis, Min Xiao, Wengang Chen, Zhenhua Zhang, Qiang Zhu, Mohamed I. Daoud
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Patent number: 10894237Abstract: A nozzle including an interior cavity, a structure disposed within the interior cavity, a first channel fluidly connected to the interior cavity, one or more second channels fluidly connected to the interior cavity, and one or more outlets coupled to the interior cavity. The structure includes a bottom impinging surface that is at least partially concave, one or more legs that support the bottom impinging surface, and a top surface located opposite the bottom impinging surface.Type: GrantFiled: November 15, 2018Date of Patent: January 19, 2021Assignee: Caterpillar Inc.Inventors: Satya Ramakrishna Manda Venkata Naga, Kevin L. Martin, Paul Arthur Zwart, Andrew M. Denis
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Patent number: 10888885Abstract: A nozzle including an exterior surface extending between a first end and a second end of the nozzle. The exterior surface including spray outlets disposed at the second end. An interior cavity is disposed interior to the exterior surface. A first channel and a second channel fluidly connect to the interior cavity. One or more third channels fluidly connect between the interior cavity and an individual spray outlet of the spray outlets. The one or more third channels rotate about a longitudinal axis of the nozzle and angle in a direction away from the longitudinal axis of the nozzle.Type: GrantFiled: November 15, 2018Date of Patent: January 12, 2021Assignee: Caterpillar Inc.Inventors: Satya Ramakrishna Manda Venkata Naga, Kevin L. Martin, Paul Arthur Zwart, Andrew M. Denis
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Patent number: 10774718Abstract: An injection apparatus includes an injection mixing platform located within an exhaust pipe; wherein the injection mixing platform includes two or more mixing blades extending radially from a common central hub, at least one of the mixing blades being coupled to a DEF inlet to receive DEF from an external tank, wherein each of the two or more mixing blades includes at least one nozzle to eject the DEF into an exhaust stream, the two or more mixing blades being statically mounted to an inner surface of the exhaust pipe.Type: GrantFiled: October 31, 2018Date of Patent: September 15, 2020Assignee: Caterpillar Inc.Inventors: Ramakrishna V. Manda, Kevin L. Martin, Paul A. Zwart, Andrew M. Denis
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Publication number: 20200156022Abstract: A nozzle including an interior cavity, a structure disposed within the interior cavity, a first channel fluidly connected to the interior cavity, one or more second channels fluidly connected to the interior cavity, and one or more outlets coupled to the interior cavity. The structure includes a bottom impinging surface that is at least partially concave, one or more legs that support the bottom impinging surface, and a top surface located opposite the bottom impinging surface.Type: ApplicationFiled: November 15, 2018Publication date: May 21, 2020Inventors: Satya Ramakrishna Manda Venkata Naga, Kevin L. Martin, Paul Arthur Zwart, Andrew M. Denis
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Publication number: 20200156023Abstract: A nozzle including an exterior surface extending between a first end and a second end of the nozzle. The exterior surface including spray outlets disposed at the second end. An interior cavity is disposed interior to the exterior surface. A first channel and a second channel fluidly connect to the interior cavity. One or more third channels fluidly connect between the interior cavity and an individual spray outlet of the spray outlets. The one or more third channels rotate about a longitudinal axis of the nozzle and angle in a direction away from the longitudinal axis of the nozzle.Type: ApplicationFiled: November 15, 2018Publication date: May 21, 2020Inventors: Satya Ramakrishna Manda Venkata Naga, Kevin L. Martin, Paul Arthur Zwart, Andrew M. Denis
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Publication number: 20200156016Abstract: A nozzle including a first channel, a second channel annularly disposed around the first channel, and a plurality of third channels fluidly connected to the second channel. The nozzle includes an interior cavity having a first inlet fluidly connected to the first channel and a plurality of second inlets. Individual second inlets of the plurality of second inlets fluidly connect to individual third channels of the plurality of third channels. The interior cavity includes an outlet and an impinging surface located opposite the first inlet.Type: ApplicationFiled: November 15, 2018Publication date: May 21, 2020Inventors: Satya Ramakrishna Manda Venkata Naga, Kevin L. Martin, Paul Arthur Zwart, Andrew M. Denis
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Publication number: 20200156024Abstract: A nozzle including a first end and a second end. The first end includes at least a first inlet and a second inlet and the second end includes a plurality of outlets. An exterior surface extends from the first end to the second end of the nozzle. A plurality of vanes are disposed on the exterior surface and extend from the first end to the second end of the nozzle. A plurality of channels form along the exterior surface of the nozzle.Type: ApplicationFiled: November 15, 2018Publication date: May 21, 2020Inventors: Satya Ramakrishna Manda Venkata Naga, Kevin L. Martin, Paul Arthur Zwart, Andrew M. Denis
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Publication number: 20200131968Abstract: An injection apparatus includes an injection mixing platform located within an exhaust pipe; wherein the injection mixing platform includes two or more mixing blades extending radially from a common central hub, at least one of the mixing blades being coupled to a DEF inlet to receive DEF from an external tank, wherein each of the two or more mixing blades includes at least one nozzle to eject the DEF into an exhaust stream, the two or more mixing blades being statically mounted to an inner surface of the exhaust pipe.Type: ApplicationFiled: October 31, 2018Publication date: April 30, 2020Applicant: Caterpillar Inc.Inventors: Ramakrishna V. Manda, Kevin L. Martin, Paul A. Zwart, Andrew M. Denis
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Patent number: 10480387Abstract: A housing for an aftertreatment system is disclosed. The housing includes a wall that defines an interior cavity. The interior cavity is configured to enclose at least one aftertreatment component. Moreover, the wall has at least one corrugated panel having alternating grooves and ridges.Type: GrantFiled: February 8, 2017Date of Patent: November 19, 2019Assignee: Caterpillar Inc.Inventors: Andrew M. Denis, Zhang Zhenhua, Min Xiao, Julian Justin, Jun Zuo
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Publication number: 20180223719Abstract: A housing for an aftertreatment system is disclosed. The housing includes a wall that defines an interior cavity. The interior cavity is configured to enclose at least one aftertreatment component. Moreover, the wall has at least one corrugated panel having alternating grooves and ridges.Type: ApplicationFiled: February 8, 2017Publication date: August 9, 2018Applicant: Caterpillar Inc.Inventors: Andrew M. Denis, Zhang Zhenhua, Min Xiao, Julian Justin, Jun Zuo
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Patent number: 9915185Abstract: An injector mounting assembly for supporting an injector is described. The injector mounting assembly includes an upstream wall and a downstream wall coupled to the upstream wall. The injector mounting assembly further includes a thermoelectric cooler coupled to at least one of the upstream wall and the downstream wall. The thermoelectric cooler is disposed in thermal contact with the injector and configured to exchange heat with the injector.Type: GrantFiled: February 17, 2016Date of Patent: March 13, 2018Assignee: Caterpillar Inc.Inventor: Andrew M. Denis
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Publication number: 20170234194Abstract: An injector mounting assembly for supporting an injector is described. The injector mounting assembly includes an upstream wall and a downstream wall coupled to the upstream wall. The injector mounting assembly further includes a thermoelectric cooler coupled to at least one of the upstream wall and the downstream wall. The thermoelectric cooler is disposed in thermal contact with the injector and configured to exchange heat with the injector.Type: ApplicationFiled: February 17, 2016Publication date: August 17, 2017Applicant: Caterpillar Inc.Inventor: Andrew M. Denis
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Patent number: 9718037Abstract: A mixing system for an aftertreatment system is disclosed. The mixing system includes a mixing tube. The mixing tube is provided in fluid communication with an exhaust conduit. The mixing system also includes a reductant injector positioned at an injection location on the mixing tube. The mixing system further includes a mixer assembly positioned downstream of the injection location. The mixer assembly includes a plurality of mixing elements provided in a series arrangement, such that each of the plurality of mixing elements is provided downstream of one another.Type: GrantFiled: December 17, 2014Date of Patent: August 1, 2017Assignee: Caterpillar Inc.Inventors: Aaron Harmon, Andrew M. Denis, Anthony C. Rodman, Eric P. Spaeth, Jayaraman K. Venkataraghavan, Raymond U. Isada, Yong Yi
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Patent number: 9719401Abstract: A boss configured to mount a nitrous oxide sensor in an exhaust conduit is disclosed. The boss includes a first tier configured to contact with an exterior surface of the exhaust conduit, the first tier defined by a first diameter and a first height. The boss also includes a second tier extending from the first tier. The second tier is configured to be disposed within an interior space defined within the exhaust conduit. The second tier is defined by a second diameter and a second height. Further, the second diameter is sized smaller than the first diameter. The boss further includes a condensation protection feature configured to direct condensation away from the nitrous oxide sensor.Type: GrantFiled: June 6, 2014Date of Patent: August 1, 2017Assignee: Caterpillar Inc.Inventors: Andrew M. Denis, Eric A. Scott, Eric P. Spaeth, Jianping Pan, Katherine D. Driscoll, Timothy J. Alcenius, Kimberly M. Stanek