Patents by Inventor Mitchell Ober

Mitchell Ober 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).

  • Engine lambda dynamic control strategy for exhaust emission reduction
    Patent number: 10954873
    Abstract: An emissions control system for a vehicle having an exhaust system with an exhaust gas conduit and a catalytic converter configured to receive exhaust gas from an engine is provided. In one example implementation, the system includes an engine controller configured to control the engine to adjust an air to fuel ratio (lambda) thereof. The engine controller is configured to operate the engine with at least one of the following lambda control strategies (i) a first control strategy comprising operating at a first reference lambda modified by a first percent kick, and a first rich lambda lag time shorter than a first lean lambda lag time, and (ii) a second control strategy comprising operating at a second reference lambda modified by a second percent kick, and a second rich lag time longer than a second lean lambda lag time, to thereby simultaneously meet predetermined NOx and CO emissions targets.
    Type: Grant
    Filed: March 1, 2019
    Date of Patent: March 23, 2021
    Assignee: FCA US LLC
    Inventors: Amit Shrestha, Bei Jin, Jingjing Li, Fadi Estefanous, Lurun Zhong, Singalandapuram Mahedevan Boopathi, Mitchell Ober
  • ENGINE LAMBDA DYNAMIC CONTROL STRATEGY FOR EXHAUST EMISSION REDUCTION
    Publication number: 20200277911
    Abstract: An emissions control system for a vehicle having an exhaust system with an exhaust gas conduit and a catalytic converter configured to receive exhaust gas from an engine is provided. In one example implementation, the system includes an engine controller configured to control the engine to adjust an air to fuel ratio (lambda) thereof. The engine controller is configured to operate the engine with at least one of the following lambda control strategies (i) a first control strategy comprising operating at a first reference lambda modified by a first percent kick, and a first rich lambda lag time shorter than a first lean lambda lag time, and (ii) a second control strategy comprising operating at a second reference lambda modified by a second percent kick, and a second rich lag time longer than a second lean lambda lag time, to thereby simultaneously meet predetermined NOx and CO emissions targets.
    Type: Application
    Filed: March 1, 2019
    Publication date: September 3, 2020
    Inventors: Amit Shrestha, Bei Jin, Jingjing Li, Fadi Estefanous, Lurun Zhong, Singalandapuram Mahedevan Boopathi, Mitchell Ober