Patents by Inventor John Henry Kwee

John Henry Kwee 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).

  • Exhaust purification system of controlling injection amount of reducing agent
    Patent number: 10598067
    Abstract: Provided is an exhaust purification system that may include: a first catalyst installed on a rear exhaust pipe of an engine; a selective catalytic reduction (SCR) catalyst installed on the rear exhaust pipe of the first catalyst; a reducing agent injector which is installed on an exhaust pipe between the first catalyst and the SCR catalyst and configured to inject a reducing agent; and a controller configured to control an amount of reducing agent injected from the reducing agent injector. /The controller may calculate a total amount of ammonia adsorbed in the SCR catalyst, a required amount of reducing agent based on a total amount of ammonia adsorbed in the SCR catalyst, and the amount of nitrogen oxide introduced into the SCR catalyst, and then control a reducing agent injector to inject the required amount of reducing agent.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: March 24, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation, FEV Europe GmbH
    Inventors: Jin Woo Park, Ki Hyung Joo, Myung Jong Lee, Arun Palaniappan Muthukaruppan, Waldemar Josef Kansy, John Henry Kwee
  • EXHAUST PURIFICATION SYSTEM OF CONTROLLING INJECTION AMOUNT OF REDUCING AGENT
    Publication number: 20190112953
    Abstract: Provided is an exhaust purification system that may include : a first catalyst installed on a rear exhaust pipe of an engine; a selective catalytic reduction (SCR) catalyst installed on the rear exhaust pipe of the first catalyst; a reducing agent injector which is installed on an exhaust pipe between the first catalyst and the SCR catalyst and configured to inject a reducing agent; and a controller configured to control an amount of reducing agent injected from the reducing agent injector. / The controller may calculate a total amount of ammonia adsorbed in the SCR catalyst, a required amount of reducing agent based on a total amount of ammonia adsorbed in the SCR catalyst, and the amount of nitrogen oxide introduced into the SCR catalyst, and then control a reducing agent injector to inject the required amount of reducing agent.
    Type: Application
    Filed: November 29, 2017
    Publication date: April 18, 2019
    Inventors: Jin Woo Park, Ki Hyung Joo, Myung Jong Lee, Arun Palaniappan Muthukaruppan, Waldemar Josef Kansy, John Henry Kwee