Patents by Inventor Lk Hwang

Lk Hwang 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).

  • Publication number: 20180284979
    Abstract: An electronic device is provided. The electronic device includes a display, at least one processor, and a memory, wherein the memory is configured to store instructions that, when executed by the electronic device, cause the at least one processor to control the display to display a first icon relating to image capture, enable a preset function and control the display to display a first object representing an execution step of the preset function, in response to movement of the first icon by a predetermined distance in a first direction, and execute the preset function and control the display to modify and display the first object, in response to movement of the first icon beyond the predetermined distance.
    Type: Application
    Filed: March 28, 2018
    Publication date: October 4, 2018
    Inventors: Na Ri CHOI, Ho Young Lee, Ho lk Hwang, Dae Hong Ki, Chang Mo Yang, Chang Hyun Chun, Jun Ho Choi
  • Patent number: 8752364
    Abstract: A system is described for producing an elevated exhaust temperature and reduced NOx output for an engine. The system includes an internal combustion engine having a common rail fuel system, an exhaust pressure modulation device for the internal combustion engine, and a controller structured to functionally execute operations for elevating the exhaust temperature and reducing the NOx output. The controller determines a desired engine outlet exhaust temperature, an engine speed, and an engine load. In response to the desired engine outlet exhaust gas temperature, the engine speed, and the engine load, the controller determines an exhaust pressure increase command and a fuel injection command including at least one post-injection event. The common rail fuel system is responsive to the fuel injection command, and the exhaust pressure modulation device is responsive to the exhaust pressure increase command.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: June 17, 2014
    Assignee: Cummins Inc.
    Inventors: Linsong Guo, Ryan Edgecomb, Robert Kern, Lk Hwang, Timothy R. Frazier, Neal W. Currier
  • Patent number: 8505281
    Abstract: A system is provided for enhancing aftertreatment regeneration capability. The system includes an internal combustion engine producing an exhaust gas stream and an aftertreatment component that treats the exhaust gas stream, where the aftertreatment component includes a desired inlet exhaust gas temperature. The system includes an exhaust gas pressure device that modulates an exhaust pressure value, and a fuel injection system that provides a post-injection event. The system includes a controller that provides an exhaust pressure command and a fuel injection command in response to determining that a temperature of the exhaust gas stream is lower than the desired inlet exhaust gas temperature. The exhaust gas pressure device is responsive to the exhaust pressure command and the fuel injection system is responsive to the fuel injection command.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: August 13, 2013
    Assignee: Cummins Inc.
    Inventors: Linsong Guo, Ryan Edgecomb, Robert Kern, Lk Hwang, Timothy R. Frazier, Neal W. Currier
  • Publication number: 20110146270
    Abstract: A system is described for producing an elevated exhaust temperature and reduced NOx output for an engine. The system includes an internal combustion engine having a common rail fuel system, an exhaust pressure modulation device for the internal combustion engine, and a controller structured to functionally execute operations for elevating the exhaust temperature and reducing the NOx output. The controller determines a desired engine outlet exhaust temperature, an engine speed, and an engine load. In response to the desired engine outlet exhaust gas temperature, the engine speed, and the engine load, the controller determines an exhaust pressure increase command and a fuel injection command including at least one post-injection event. The common rail fuel system is responsive to the fuel injection command, and the exhaust pressure modulation device is responsive to the exhaust pressure increase command.
    Type: Application
    Filed: September 30, 2010
    Publication date: June 23, 2011
    Inventors: Linsong Guo, Ryan Edgecomb, Robert Kern, Lk Hwang, Timothy R. Frazier, Neal W. Currier
  • Publication number: 20110139136
    Abstract: A system is provided for enhancing aftertreatment regeneration capability. The system includes an internal combustion engine producing an exhaust gas stream and an aftertreatment component that treats the exhaust gas stream, where the aftertreatment component includes a desired inlet exhaust gas temperature. The system includes an exhaust gas pressure device that modulates an exhaust pressure value, and a fuel injection system that provides a post-injection event. The system includes a controller that provides an exhaust pressure command and a fuel injection command in response to determining that a temperature of the exhaust gas stream is lower than the desired inlet exhaust gas temperature. The exhaust gas pressure device is responsive to the exhaust pressure command and the fuel injection system is responsive to the fuel injection command.
    Type: Application
    Filed: September 30, 2010
    Publication date: June 16, 2011
    Inventors: Linsong Guo, Ryan Edgecomb, Robert Kern, Lk Hwang, Timothy R. Frazier, Neal W. Currier