Patents by Inventor Johnathan Trundt

Johnathan Trundt 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).

  • Diagnostic and mitigation strategy for reductant injector obstruction in exhaust system
    Patent number: 10378415
    Abstract: A reductant delivery system includes an electronic control unit coupled with each of an electronically controlled reductant injector and an electronically controlled pump, and structured to mitigate obstruction of a reductant injector in an exhaust system of an engine. The electronic control unit is further structured to receive data indicative of a pump duty cycle, and calculate a diagnostic value based on pump duty cycle associated with injection of different amounts of reductant, compare the diagnostic value with a threshold value, and output an error signal to trigger an obstructed-injector mitigation action.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: August 13, 2019
    Assignee: Caterpillar Inc.
    Inventors: Brian Cole, Sanket Yeole, Darin McCoy, Johnathan Trundt, Wayne Davey
  • DIAGNOSTIC AND MITIGATION STRATEGY FOR REDUCTANT INJECTOR OBSTRUCTION IN EXHAUST SYSTEM
    Publication number: 20190063296
    Abstract: A reductant delivery system includes an electronic control unit coupled with each of an electronically controlled reductant injector and an electronically controlled pump, and structured to mitigate obstruction of a reductant injector in an exhaust system of an engine. The electronic control unit is further structured to receive data indicative of a pump duty cycle, and calculate a diagnostic value based on pump duty cycle associated with injection of different amounts of reductant, compare the diagnostic value with a threshold value, and output an error signal to trigger an obstructed-injector mitigation action.
    Type: Application
    Filed: August 30, 2017
    Publication date: February 28, 2019
    Applicant: Caterpillar Inc.
    Inventors: Brian Cole, Sanket Yeole, Darin McCoy, Johnathan Trundt, Wayne Davey
  • Reductant supply system for engine
    Patent number: 9657628
    Abstract: A method for purging a reductant supply system for an engine is provided. The reductant supply system includes a reservoir to store a reductant. The reductant supply system further includes an injector to inject reductant in an exhaust conduit of the engine. The reductant supply system also includes a conduit coupled between the reservoir and the injector to supply the reductant. The method for purging the reductant supply system includes initiating purging of the injector and the conduit such that the reductant in the injector and conduit flows to the reservoir. The method further includes monitoring of the dilution of the reductant during purging and indicating a completion of the purging when the dilution of the reductant in the reservoir reaches a threshold value.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: May 23, 2017
    Assignee: Caterpillar Inc.
    Inventors: Brian Cole, Kevin L Dea, Johnathan Trundt, Dirk DeDecker