Patents by Inventor Tyler Lenzen

Tyler Lenzen 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 exhaust gas recirculation system diagnostics
    Patent number: 10632988
    Abstract: Methods and systems are provided for on-board diagnostics of an exhaust gas recirculation (EGR) system of an engine coupled to a hybrid vehicle. In one example, a method may include, upon receiving an engine shut-down request, prior to engine spin-down, rotating the engine at an idling speed via an electric motor and carrying out diagnostics of the EGR system. EGR diagnostics may include estimating a ratio of accumulated difference between a measured EGR flow and an EGR limit to accumulated intake air flow, over a duration of time, and indicating EGR system degradation in response to the ratio being higher than a threshold.
    Type: Grant
    Filed: June 11, 2018
    Date of Patent: April 28, 2020
    Assignee: Ford Global Technologies, LLC
    Inventors: Robert Jentz, Tyler Lenzen, Sumanth Dadam, Herbert Meissner, Kent Hancock
  • METHOD AND SYSTEM FOR EXHAUST GAS RECIRCULATION SYSTEM DIAGNOSTICS
    Publication number: 20190375395
    Abstract: Methods and systems are provided for on-board diagnostics of an exhaust gas recirculation (EGR) system of an engine coupled to a hybrid vehicle. In one example, a method may include, upon receiving an engine shut-down request, prior to engine spin-down, rotating the engine at an idling speed via an electric motor and carrying out diagnostics of the EGR system. EGR diagnostics may include estimating a ratio of accumulated difference between a measured EGR flow and an EGR limit to accumulated intake air flow, over a duration of time, and indicating EGR system degradation in response to the ratio being higher than a threshold.
    Type: Application
    Filed: June 11, 2018
    Publication date: December 12, 2019
    Inventors: Robert Jentz, Tyler Lenzen, Sumanth Dadam, Herbert Meissner, Kent Hancock