Patents by Inventor Justin R. Kollien

Justin R. Kollien 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 of diagnosing several systems and components by cycling the EGR valve
    Patent number: 8649961
    Abstract: A method to operate an electronic controlled internal combustion engine to perform on board NOx emissions level diagnostics. In one embodiment, the method may include operating the engine to maintain a predetermined temperature for a predetermined period of time, determining whether the engine operating status is stable for one of cruise control, idle engine speed, engine torque, or high idle regeneration for a predetermined period of time, cycling the EGR valve between a first position for a predetermined period of time and then in a second position for a predetermined period of time, a determining a change in engine out NOx levels to determine whether an engine component or system is malfunctioning.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: February 11, 2014
    Assignee: Detroit Diesel Corporation
    Inventors: Jeffery Scott Hawkins, Marc Christian Allain, Justin R. Kollien
  • METHOD OF DIAGNOSING SEVERAL SYSTEMS AND COMPONENTS BY CYCLING THE EGR VALVE
    Publication number: 20130068203
    Abstract: A method to operate an electronic controlled internal combustion engine to perform on board NOx emissions level diagnostics. In one embodiment, the method may include operating the engine to maintain a predetermined temperature for a predetermined period of time, determining whether the engine operating status is stable for one of cruise control, idle engine speed, engine torque, or high idle regeneration for a predetermined period of time, cycling the EGR valve between a first position for a predetermined period of time and then in a second position for a predetermined period of time, a determining a change in engine out NOx levels to determine whether an engine component or system is malfunctioning.
    Type: Application
    Filed: September 20, 2011
    Publication date: March 21, 2013
    Applicant: Detroit Diesel Corporation
    Inventors: Jeffery S. Hawkins, Marc C. Allain, Justin R. Kollien