Patents by Inventor Jason T. Krajewski

Jason T. Krajewski 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: 8707687
    Abstract: A diesel exhaust treatment system for treating exhaust gas from a diesel engine comprises at least one diesel particulate filter, at least one diesel exhaust fluid mixing chamber and at least one selective catalytic reduction converter (SCR). In one desirable embodiment, plural diesel particulate filters are arranged in parallel and plural SCRs are arranged in parallel. These components including the diesel exhaust fluid mixing chamber can be included in a common housing with the exhaust flow reversing directions a plurality of times as it passes through the treatment system from an exhaust inlet to an exhaust outlet. The housing can be coupled to one vehicle frame rail with most of the housing and components contained therein positioned outside the outer surface of the one frame rail.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: April 29, 2014
    Assignee: Daimler Trucks North America LLC
    Inventors: Rakesh Aneja, Jeffrey M. Girbach, Jeffrey A. Begeman, Matthew Oaks, Jason T. Krajewski, Andrew S. McLandress, Napolyon Isikbay
  • Publication number: 20120260635
    Abstract: A diesel exhaust treatment system for treating exhaust gas from a diesel engine comprises at least one diesel particulate filter, at least one diesel exhaust fluid mixing chamber and at least one selective catalytic reduction converter (SCR). In one desirable embodiment, plural diesel particulate filters are arranged in parallel and plural SCRs are arranged in parallel. These components including the diesel exhaust fluid mixing chamber can be included in a common housing with the exhaust flow reversing directions a plurality of times as it passes through the treatment system from an exhaust inlet to an exhaust outlet. The housing can be coupled to one vehicle frame rail with most of the housing and components contained therein positioned outside the outer surface of the one frame rail.
    Type: Application
    Filed: June 29, 2012
    Publication date: October 18, 2012
    Inventors: Rakesh Aneja, Jeffrey M. Girbach, Jeffrey A. Begeman, Matthew Oaks, Jason T. Krajewski, Andrew S. McLandress, Napolyon Isikbay
  • Patent number: 8230678
    Abstract: A diesel exhaust treatment system for treating exhaust gas from a diesel engine comprises at least one diesel particulate filter, at least one diesel exhaust fluid mixing chamber and at least one selective catalytic reduction converter (SCR). In one desirable embodiment, plural diesel particulate filters are arranged in parallel and plural SCRs are arranged in parallel. These components including the diesel exhaust fluid mixing chamber can be included in a common housing with the exhaust flow reversing directions a plurality of times as it passes through the treatment system from an exhaust inlet to an exhaust outlet. The housing can be coupled to one vehicle frame rail with most of the housing and components contained therein positioned outside the outer surface of the one frame rail.
    Type: Grant
    Filed: June 16, 2008
    Date of Patent: July 31, 2012
    Assignee: Daimler Trucks North America LLC
    Inventors: Rakesh Aneja, Jeffrey M. Girbach, Jeffrey A. Begeman, Matthew Oaks, Jason T. Krajewski, Andrew S. McLandress, Napolyon Isikbay
  • Publication number: 20120017566
    Abstract: In one exemplary embodiment, an exhaust dilution and dispersion device for a vehicle can include a generally elongate tailpipe comprising an inlet section capable of being in exhaust receiving communication with an exhaust system of a vehicle. The tailpipe further comprises an outlet section in exhaust receiving communication with the inlet section. The outlet section can also comprise a downwardly directed exhaust deflection portion and an exhaust outlet in exhaust dispersing communication with the surroundings external to the device. The exhaust outlet can comprise a generally elongate exhaust dispersion opening extending in a lengthwise direction along the tailpipe. At least a portion of the exhaust outlet can be coextensive with the downwardly directed exhaust deflecting portion and a major portion of the exhaust dispersed from the outlet can have a transverse component.
    Type: Application
    Filed: July 21, 2011
    Publication date: January 26, 2012
    Inventors: Jason T. Krajewski, Bhaskar Keshav Bhatnagar
  • Patent number: 8001775
    Abstract: In one exemplary embodiment, an exhaust dilution and dispersion device for a vehicle can include a generally elongate tailpipe including an inlet section capable of being in exhaust receiving communication with an exhaust system of a vehicle. The tailpipe further includes an outlet section in exhaust receiving communication with the inlet section. The outlet section can also include a downwardly directed exhaust deflection portion and an exhaust outlet in exhaust dispersing communication with the surroundings external to the device. The exhaust outlet can include a generally elongate exhaust dispersion opening extending in a lengthwise direction along the tailpipe. At least a portion of the exhaust outlet can be coextensive with the downwardly directed exhaust deflecting portion and a major portion of the exhaust dispersed from the outlet can have a transverse component.
    Type: Grant
    Filed: May 26, 2006
    Date of Patent: August 23, 2011
    Assignee: Daimler Trucks North America LLC
    Inventors: Jason T. Krajewski, Bhaskar Keshav Bhatnagar
  • Publication number: 20080314033
    Abstract: A diesel exhaust treatment system for treating exhaust gas from a diesel engine comprises at least one diesel particulate filter, at least one diesel exhaust fluid mixing chamber and at least one selective catalytic reduction converter (SCR). In one desirable embodiment, plural diesel particulate filters are arranged in parallel and plural SCRs are arranged in parallel. These components including the diesel exhaust fluid mixing chamber can be included in a common housing with the exhaust flow reversing directions a plurality of times as it passes through the treatment system from an exhaust inlet to an exhaust outlet. The housing can be coupled to one vehicle frame rail with most of the housing and components contained therein positioned outside the outer surface of the one frame rail.
    Type: Application
    Filed: June 16, 2008
    Publication date: December 25, 2008
    Inventors: Rakesh Aneja, Jeffrey M. Girbach, Jeffrey A. Begeman, Matthew Oaks, Jason T. Krajewski, Andrew S. McLandress, Napolyon Isikbay