Patents by Inventor Ian Package

Ian Package 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).

  • Method and system for mitigating urea deposits within an SCR catalyst system
    Patent number: 9091189
    Abstract: A method and system for mitigating a urea deposit within an SCR system that includes determining a mass of an accumulated urea deposit present within the SCR catalyst and SCR piping, comparing the mass of the accumulated urea deposit with a deposit upper threshold limit, and initiating an SCR regeneration event when the mass of the accumulated urea deposit is greater than the deposit upper threshold limit. The method further includes determining an amount of NH3 passing through the SCR catalyst downstream of the urea deposit, comparing the amount of NH3 passing through the SCR catalyst with an NH3 regeneration threshold limit, and terminating the SCR regeneration event when the level of NH3 passing through the SCR catalyst is less than the SCR NH3 regeneration threshold.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: July 28, 2015
    Assignee: Cummins IP, Inc.
    Inventors: Fan Zeng, C. Larry Bruner, Edmund Hodzen, Ian Package, Shankar Kumar, Krishna Kamasamudram
  • METHOD AND SYSTEM FOR MITIGATING UREA DEPOSITS WITHIN AN SCR CATALYST SYSTEM
    Publication number: 20140017794
    Abstract: A method and system for mitigating a urea deposit within an SCR system that includes determining a mass of an accumulated urea deposit present within the SCR catalyst and SCR piping, comparing the mass of the accumulated urea deposit with a deposit upper threshold limit, and initiating an SCR regeneration event when the mass of the accumulated urea deposit is greater than the deposit upper threshold limit. The method further includes determining an amount of NH3 passing through the SCR catalyst downstream of the urea deposit, comparing the amount of NH3 passing through the SCR catalyst with an NH3 regeneration threshold limit, and terminating the SCR regeneration event when the level of NH3 passing through the SCR catalyst is less than the SCR NH3 regeneration threshold.
    Type: Application
    Filed: July 13, 2012
    Publication date: January 16, 2014
    Applicant: CUMMINS IP, INC
    Inventors: Fan Zeng, C. Larry Bruner, Edmund Hodzen, Ian Package, Shankar Kumar, Krishna Kamasamudram