Patents by Inventor April Evans

April Evans 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).

  • Apparatus, system, and method for mitigating diesel exhaust fluid deposits and associated conditions
    Patent number: 8528319
    Abstract: According to one embodiment, described herein is an apparatus for mitigating on-board diagnostic (OBD) faults generated by an OBD system of an internal combustion engine (ICE) system having a selective catalytic reduction system with a diesel exhaust fluid (DEF) decomposition tube. The apparatus includes a fault mitigation module that is configured to monitor at least one OBD signal of the OBD system and issue a request for regenerating the DEF decomposition tube when a value of the at least one OBD signal reaches a predetermined regeneration threshold corresponding with the at least one OBD signal. The regeneration threshold is reachable prior to an OBD fault threshold corresponding with the at least one OBD signal. The apparatus also includes a regeneration module that is configured to regenerate the DEF decomposition tube according to the issued request.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: September 10, 2013
    Assignee: Cummins IP, Inc.
    Inventors: Daniel D. Wilhelm, Kwadwo O. Owusu, April Evans, Xiao Lin, Robert Kern, Douglas Alan Mitchell, Lisa Farrell
  • APPARATUS, SYSTEM, AND METHOD FOR MITIGATING DIESEL EXHAUST FLUID DEPOSITS AND ASSOCIATED CONDITIONS
    Publication number: 20110146240
    Abstract: According to one embodiment, described herein is an apparatus for mitigating on-board diagnostic (OBD) faults generated by an OBD system of an internal combustion engine (ICE) system having a selective catalytic reduction system with a diesel exhaust fluid (DEF) decomposition tube. The apparatus includes a fault mitigation module that is configured to monitor at least one OBD signal of the OBD system and issue a request for regenerating the DEF decomposition tube when a value of the at least one OBD signal reaches a predetermined regeneration threshold corresponding with the at least one OBD signal. The regeneration threshold is reachable prior to an OBD fault threshold corresponding with the at least one OBD signal. The apparatus also includes a regeneration module that is configured to regenerate the DEF decomposition tube according to the issued request.
    Type: Application
    Filed: December 21, 2010
    Publication date: June 23, 2011
    Applicant: CUMMINS IP, INC
    Inventors: Daniel D. Wilhelm, Kwadwo O. Owusu, April Evans, Xiao Lin, Robert Kern, Douglas Alan Mitchell, Lisa Farrell