Patents by Inventor Kurtis Chenoweth

Kurtis Chenoweth 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).

  • Patent number: 11028755
    Abstract: A selective catalytic reduction (SCR) system is disclosed. The SCR system may include a mixing tube with a mixing tube inlet; a diesel exhaust fluid (DEF) injector proximate to the mixing tube inlet; and a flow control device proximate to the mixing tube inlet, wherein the flow control device is positioned within the mixing tube or affixed to the mixing tube inlet, and wherein the flow control device includes a plurality of vanes arranged around a center of the flow control device.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: June 8, 2021
    Assignee: Caterpillar Inc.
    Inventors: Kurtis Chenoweth, Jianping Pan, Mohamed Daoud, Srinivasa Perumal Velu, Arvind Jujare, Y. T. Bui
  • Patent number: 11008915
    Abstract: A diesel exhaust fluid (DEF) system and a method of controlling the DEF system are disclosed. The method may include determining that a shutdown condition of the DEF system is satisfied; providing a control signal to open a valve of a buffer tank of the DEF system based on determining that the shutdown condition of the DEF system is satisfied; determining that a level of DEF remaining in the buffer tank satisfies a threshold; and closing the valve of the buffer tank based on the level of DEF remaining in the buffer tank satisfying the threshold.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: May 18, 2021
    Assignee: Caterpillar Inc.
    Inventors: Kurtis Chenoweth, Jason Hudgens, Xiaohui Gong, Shivsinh Parmar
  • Patent number: 10934907
    Abstract: An aftertreatment module is disclosed. The aftertreatment module may include a housing and a mounting plate within the housing that forms an inlet chamber and an outlet chamber. The aftertreatment module may include an inlet for exhaust gas from a combustion engine to flow into the inlet chamber and an outlet through a top plate of the housing for the exhaust gas to flow from the outlet chamber, wherein the outlet comprises a plurality of perforations. The aftertreatment module may include an outlet sensor mounted on the outlet to obtain information relating to the exhaust gas as the exhaust gas flows from the outlet chamber and a set of catalysts mounted to the mounting plate to treat the exhaust gas as the exhaust gas flows from the inlet chamber to the outlet chamber. The aftertreatment module may include a drain port through a side plate of the housing.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: March 2, 2021
    Assignee: Caterpillar Inc.
    Inventors: Kurtis Chenoweth, Jianping Pan, Mohamed Daoud, Ian Aguirre, Y. T. Bui
  • Patent number: 10865683
    Abstract: An aftertreatment module is disclosed. The aftertreatment module may include a housing. The aftertreatment module may include a mounting plate within the housing that forms an inlet chamber and an outlet chamber. The aftertreatment module may include an inlet for exhaust gas from a combustion engine to flow into to the inlet chamber. The aftertreatment module may include an outlet through a top plate of the housing. The inlet and the outlet may be located on opposite sides of the housing and at opposite ends of the housing from each other. The aftertreatment module may include a set of catalysts mounted to the mounting plate. The aftertreatment module may include a diffuser plate within the inlet chamber that forms a lower portion of the inlet chamber and an upper portion of the inlet chamber. The diffuser plate may diffuse the exhaust gas through the lower portion.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: December 15, 2020
    Assignee: Caterpillar Inc.
    Inventors: Kurtis Chenoweth, Mohamed Daoud
  • Publication number: 20200300143
    Abstract: A diesel exhaust fluid (DEF) system and a method of controlling the DEF system are disclosed. The method may include determining that a shutdown condition of the DEF system is satisfied; providing a control signal to open a valve of a buffer tank of the DEF system based on determining that the shutdown condition of the DEF system is satisfied; determining that a level of DEF remaining in the buffer tank satisfies a threshold; and closing the valve of the buffer tank based on the level of DEF remaining in the buffer tank satisfying the threshold.
    Type: Application
    Filed: March 20, 2019
    Publication date: September 24, 2020
    Applicant: Caterpillar Inc.
    Inventors: Kurtis CHENOWETH, Jason HUDGENS, Xiaohui GONG, Shivsinh PARMAR
  • Publication number: 20200300146
    Abstract: A selective catalytic reduction (SCR) system is disclosed. The SCR system may include a mixing tube with a mixing tube inlet; a diesel exhaust fluid (DEF) injector proximate to the mixing tube inlet; and a flow control device proximate to the mixing tube inlet, wherein the flow control device is positioned within the mixing tube or affixed to the mixing tube inlet, and wherein the flow control device includes a plurality of vanes arranged around a center of the flow control device.
    Type: Application
    Filed: March 20, 2019
    Publication date: September 24, 2020
    Applicant: Caterpillar Inc.
    Inventors: Kurtis CHENOWETH, Jianping PAN, Mohamed DAOUD, Srinivasa Perumal VELU, Arvind JUJARE, Y. T. BUI
  • Publication number: 20200300137
    Abstract: An aftertreatment module is disclosed. The aftertreatment module may include a housing and a mounting plate within the housing that forms an inlet chamber and an outlet chamber. The aftertreatment module may include an inlet for exhaust gas from a combustion engine to flow into the inlet chamber and an outlet through a top plate of the housing for the exhaust gas to flow from the outlet chamber, wherein the outlet comprises a plurality of perforations. The aftertreatment module may include an outlet sensor mounted on the outlet to obtain information relating to the exhaust gas as the exhaust gas flows from the outlet chamber and a set of catalysts mounted to the mounting plate to treat the exhaust gas as the exhaust gas flows from the inlet chamber to the outlet chamber. The aftertreatment module may include a drain port through a side plate of the housing.
    Type: Application
    Filed: March 20, 2019
    Publication date: September 24, 2020
    Applicant: Caterpillar Inc.
    Inventors: Kurtis CHENOWETH, Jianping PAN, Mohamed DAOUD, Ian AGUIRRE, Y. T. BUI
  • Publication number: 20200300145
    Abstract: An aftertreatment module is disclosed. The aftertreatment module may include a housing. The aftertreatment module may include a mounting plate within the housing that forms an inlet chamber and an outlet chamber. The aftertreatment module may include an inlet for exhaust gas from a combustion engine to flow into to the inlet chamber. The aftertreatment module may include an outlet through a top plate of the housing. The inlet and the outlet may be located on opposite sides of the housing and at opposite ends of the housing from each other. The aftertreatment module may include a set of catalysts mounted to the mounting plate. The aftertreatment module may include a diffuser plate within the inlet chamber that forms a lower portion of the inlet chamber and an upper portion of the inlet chamber. The diffuser plate may diffuse the exhaust gas through the lower portion.
    Type: Application
    Filed: March 20, 2019
    Publication date: September 24, 2020
    Applicant: Caterpillar Inc.
    Inventors: Kurtis CHENOWETH, Mohamed DAOUD
  • Patent number: 10731536
    Abstract: An exhaust gas aftertreatment system is disclosed. The system may include an inlet to receive an exhaust gas produced by an engine and a first section to receive the exhaust gas from the inlet. The system may include a mixing tube to receive the exhaust gas from the first section and a reductant injector to inject a reductant into the mixing tube. The system may include a second section to receive the exhaust gas from the mixing tube and to facilitate mixing of the reductant and the exhaust gas after the exhaust gas exits the mixing tube and a diffuser to receive the exhaust gas from the second section. The system may include a plurality of catalysts to receive the exhaust gas from the diffuser and at least one outlet to receive the exhaust gas from the plurality of catalysts.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: August 4, 2020
    Assignee: Caterpillar Inc.
    Inventors: Kurtis Chenoweth, Jianping Pan, Mohamed Daoud, Y. T. Bui, Jason Hudgens, Ian Aguirre