Patents by Inventor Jinhui Sun
Jinhui Sun 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: 8635861Abstract: An exhaust aftertreatment system including an exhaust flow area, a first bank of one or more exhaust treatment devices in fluid communication with the exhaust flow area and a second bank of one or more exhaust treatment devices in fluid communication with the exhaust flow area. The first bank may be arranged in parallel with the second bank and inlet of the first bank is configured to provide greater flow resistance to the exhaust than the inlet of the second bank.Type: GrantFiled: September 14, 2010Date of Patent: January 28, 2014Assignee: Caterpillar Inc.Inventors: Jinhui Sun, Yung T. Bui, Michael P. Boahene, Shashank Mupparapu
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Publication number: 20130219871Abstract: A mounting assembly for an injector is located in a curved portion of an exhaust line having an exhaust flow from an upstream end to a downstream end. The mounting assembly includes an indent extending at least partially into the exhaust line curved portion and disposed in the exhaust flow. The downstream wall has an interior surface oriented to substantially face the exhaust line downstream end. A recess extends from the downstream wall in a direction away from the exhaust line downstream end, and a recess aperture is formed in the recess and configured to fluidly communicate with the injector. The recess reduces the amount of exhaust heat reaching the injector tip.Type: ApplicationFiled: February 27, 2012Publication date: August 29, 2013Applicant: CATERPILLAR, INC.Inventors: Richard Anderson Crandell, Jinhui Sun, Yong Yi, Zhi Huang, Matthew Fahrenkrug, James E. Webster, III, Michael Max Blanco
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Patent number: 8516800Abstract: A system and method controls injection of a reductant agent in a selective catalytic reduction system. The system and method include an injector injecting the reductant agent to an exhaust system directing exhaust from a power system. A coolant system circulates coolant proximate to the injector. A coolant temperature sensor monitors a coolant temperature of the coolant. A controller adjusts the injection timing of the injector based at least in part on the coolant temperature.Type: GrantFiled: December 22, 2010Date of Patent: August 27, 2013Assignee: Caterpillar Inc.Inventors: Baoyong Liu, Sylvain J. Charbonnel, Jinhui Sun
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Patent number: 8459012Abstract: A method for purging reductant from a reductant supply system is disclosed. The method includes dispensing reductant into an exhaust system via a dispensing device. The method also includes purging the dispensing device by urging reductant from the dispensing device to a reductant source.Type: GrantFiled: November 19, 2008Date of Patent: June 11, 2013Assignee: Caterpillar Inc.Inventors: Jinhui Sun, Shashank Mupparapu, Theodore J. Tarabulski, Paul W. Park
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Patent number: 8359832Abstract: An engine exhaust aftertreatment system including a mixer disposed in the exhaust stream. The mixer includes a mesh section having a mesh of wires and may include a baffle section having a deflector that redirects a direction of flow of the exhaust stream. The mesh section may not extend across an entire width of an exhaust conduit containing the exhaust stream. The mesh section may also be sized and located to intersect the reductant introduced by the injector.Type: GrantFiled: December 21, 2009Date of Patent: January 29, 2013Assignee: Caterpillar Inc.Inventors: Yong Yi, Jinhui Sun
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Publication number: 20130000729Abstract: A fluid supply system configured to be utilized with a coolant system of an engine, the fluid supply system including; a fluid tank, a fluid pump coupled to the fluid tank and a thermal management system in thermal communication with the fluid tank and the fluid pump, wherein the thermal management system includes; a first coolant circuit in thermal communication with the fluid tank and a second coolant circuit in thermal communication with the fluid pump, wherein flow of coolant from the coolant system through the first fluid circuit and second fluid circuit is in parallel when coolant flows through the second fluid circuit.Type: ApplicationFiled: June 30, 2011Publication date: January 3, 2013Applicant: Caterpillar Inc.Inventors: Mahesh K. Mokire, Jinhui Sun, Jack A. Merchant, Raymond U. Isada, Yong Yi, Daniel R. Wentzel
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Patent number: 8291926Abstract: A reductant dosing system for a machine having an engine and an exhaust system is disclosed. The reductant dosing system has a tank configured to hold a reductant, a dosing arrangement, and a supply passage connecting the tank to the dosing arrangement. The reductant dosing system also has a purging arrangement configured to direct purge fluid to at least one of the dosing arrangement and the supply passage, and a valve configured to allow reductant to pass from the tank to the supply passage and to inhibit purge fluid from entering the tank.Type: GrantFiled: February 20, 2009Date of Patent: October 23, 2012Assignee: Caterpillar Inc.Inventors: Sairam P. Thiagarajan, Stephan D. Roozenboom, Raymond B. Gerges, Jinhui Sun, Shashank Mupparapu, Tetsu O. Velasquez, Yung T. Bui
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Patent number: 8240014Abstract: A method of fabricating a piezo actuator is disclosed. The method includes forcing a blank against a mold to form a cylindrical casing having an open end and a closed end and rotating the cylindrical casing. The method also includes urging a die having a plurality of equally spaced protrusions into a surface of the cylindrical casing to form bellows in the cylindrical casing. The method further includes positioning a piezo element within the cylindrical casing.Type: GrantFiled: August 18, 2008Date of Patent: August 14, 2012Assignee: Caterpillar Inc.Inventors: Dennis H. Gibson, Jinhui Sun
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Publication number: 20120159928Abstract: A system and method controls injection of a reductant agent in a selective catalytic reduction system. The system and method include an injector injecting the reductant agent to an exhaust system directing exhaust from a power system. A coolant system circulates coolant proximate to the injector. A coolant temperature sensor monitors a coolant temperature of the coolant. A controller adjusts the injection timing of the injector based at least in part on the coolant temperature.Type: ApplicationFiled: December 22, 2010Publication date: June 28, 2012Applicant: CATERPILLAR INC.Inventors: Baoyong Liu, Sylvain J. Charbonnel, Jinhui Sun
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Publication number: 20120151902Abstract: An engine exhaust aftertreatment system including a mixer with a varying contact area that assists in the introduction and conversion of a reductant introduced by an injector.Type: ApplicationFiled: December 16, 2010Publication date: June 21, 2012Applicant: Caterpillar Inc.Inventors: Yong Yi, Jinhui Sun
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Publication number: 20120073264Abstract: A reductant dosing system for an engine is disclosed. The reductant dosing system may have a supply of reductant, a reservoir configured to hold pressurized reductant, and a pump configured to draw reductant from the supply and discharge reductant at an elevated pressure into the reservoir. The reductant dosing system may also have a plurality of injectors fluidly connected to the reservoir, and a drain valve fluidly connected between the reservoir and the supply.Type: ApplicationFiled: September 27, 2010Publication date: March 29, 2012Inventors: Yongxiang LI, Jinhui Sun
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Publication number: 20110239631Abstract: An engine exhaust aftertreatment system including a ring disposed in an exhaust conduit. The ring assists in the introduction and conversion of a reductant introduced by an injector.Type: ApplicationFiled: April 5, 2010Publication date: October 6, 2011Applicant: Caterpillar Inc.Inventors: Yung T. Bui, Yuxiang Gu, Jinhui Sun
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Publication number: 20110146254Abstract: An engine exhaust aftertreatment system including a mixer disposed in the exhaust stream. The mixer includes a mesh section having a mesh of wires and may include a baffle section having a deflector that redirects a direction of flow of the exhaust stream. The mesh section may not extend across an entire width of an exhaust conduit containing the exhaust stream. The mesh section may also be sized and located to intersect the reductant introduced by the injector.Type: ApplicationFiled: December 21, 2009Publication date: June 23, 2011Applicant: Caterpillar Inc.Inventors: Yong Yi, Jinhui Sun
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Publication number: 20110146236Abstract: An exhaust aftertreatment system including an exhaust flow area, a first bank of one or more exhaust treatment devices in fluid communication with the exhaust flow area and a second bank of one or more exhaust treatment devices in fluid communication with the exhaust flow area.Type: ApplicationFiled: September 14, 2010Publication date: June 23, 2011Applicant: Caterpillar Inc.Inventors: Jinhui Sun, Yung T. Bui, Michael P. Boahene, Shashank Mupparapu
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Publication number: 20110079003Abstract: An engine exhaust aftertreatment system including a bend routing an exhaust flow in a curved direction to a straight part. A nozzle is mounted in the bend to introduce a spray of a fluid with a axis of symmetry into the exhaust flow. The axis of symmetry intersects the exhaust flow traveling in the curved direction at a intersection angle of less than 50 degrees.Type: ApplicationFiled: October 5, 2009Publication date: April 7, 2011Applicant: Caterpillar Inc.Inventors: Jinhui Sun, Paul F. Olsen, Stephan D. Roozenboom
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Publication number: 20110030343Abstract: An engine exhaust aftertreatment system including a selective catalytic reduction (SCR) system. The SCR system includes a reductant injection system configured to introduce a reductant into a exhaust stream of a engine, a SCR catalysts configured to reduce NOx in the presence of a reductant, and a SCR monitoring system configured to determine temperatures associated with the SCR system. The SCR system also includes a heat source configured to raise the temperature of the exhaust stream and a controller configured to operate the heat source to reach exhaust stream temperatures in the SCR system of at least about 400 degrees Celsius based on the temperature associated with the SCR system.Type: ApplicationFiled: August 6, 2009Publication date: February 10, 2011Applicant: Caterpillar Inc.Inventors: Matthew Thomas Kiser, Cornelius N. Opris, Alan R. Stockner, Jinhui Sun, Zhiyong Wei
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Publication number: 20100212290Abstract: A reductant dosing system for a machine having an engine and an exhaust system is disclosed. The reductant dosing system has a tank configured to hold a reductant, a dosing arrangement, and a supply passage connecting the tank to the dosing arrangement. The reductant dosing system also has a purging arrangement configured to direct purge fluid to at least one of the dosing arrangement and the supply passage, and a valve configured to allow reductant to pass from the tank to the supply passage and to inhibit purge fluid from entering the tank.Type: ApplicationFiled: February 20, 2009Publication date: August 26, 2010Inventors: Sairam P. THIAGARAJAN, Stephan D. Roozenboom, Raymond B. Gerges, Jinhui Sun, Shashank Mupparapu, Tetsu O. Velasquez, Yung T. Bui
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Publication number: 20100186389Abstract: A reductant insulating system configured to prevent a flow of reductant used by an engine's selective catalytic reduction (SCR) device from overheating.Type: ApplicationFiled: January 27, 2009Publication date: July 29, 2010Applicant: Caterpillar Inc.Inventors: Jinhui Sun, Yong Yi
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Publication number: 20100186382Abstract: An emissions control system is disclosed. The emissions control system may have a first exhaust treatment device. The emissions control system may also have an end cap defining a mixing chamber connected to an end of the first exhaust treatment device. The mixing chamber may be configured to promote mixing between a flow of exhaust received from the first exhaust treatment device and a reductant. The emissions control system may further have a second exhaust treatment device configured to receive the flow of exhaust and reductant after it passes through the mixing chamber.Type: ApplicationFiled: January 26, 2009Publication date: July 29, 2010Inventors: Eric Lee Schroeder, Jinhui Sun, Yuxiang Gu, Amarnath Nelli, Paul Frederick Olsen, Jack Albert Merchant, Stephan D. Roozenboom
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Publication number: 20100146948Abstract: An engine exhaust treatment system. The treatment system includes and a reductant injector adapted to deliver a reductant composition into an exhaust stream moving along an exhaust flow path. A selective catalytic reduction device is disposed downstream from the reductant injector. The selective catalytic reduction device is adapted to reduce an amount of NOx in exhaust gases produced by an engine by reaction of the NOx with ammonia. A basic and/or amphoteric oxide contact surface is disposed along the exhaust flow path.Type: ApplicationFiled: December 17, 2008Publication date: June 17, 2010Applicant: Caterpillar Inc.Inventors: Herbert DaCosta, Mark D. Veliz, Cho Y. Liang, Jinhui Sun, Timothy Gimbert, Matthew Leustek