Patents by Inventor Beom Kyun Yu

Beom Kyun Yu 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).

  • Multi-step regeneration device of DPF and regeneration method therefor
    Patent number: 10508581
    Abstract: The present disclosure provides a multi-step regeneration apparatus of a diesel particulate filter (DPF), which generates a load to an engine to remove soot, the apparatus including: an external air temperature sensor configured to measure a temperature of external air; a controller configured to compare a temperature value measured by the external air temperature sensor with a predetermined value and output a signal; and a control valve unit including a first control valve and a second control valve receiving a signal from the controller, and a first spool operated by the first control valve and a second spool operated by the second control valve.
    Type: Grant
    Filed: October 14, 2013
    Date of Patent: December 17, 2019
    Assignee: Doosan Corporation
    Inventor: Beom Kyun Yu
  • MULTI-STEP REGENERATION DEVICE OF DPF AND REGENERATION METHOD THEREFOR
    Publication number: 20150267589
    Abstract: The present disclosure provides a multi-step regeneration apparatus of a diesel particulate filter (DPF), which generates a load to an engine to remove soot, the apparatus including: an external air temperature sensor configured to measure a temperature of external air; a controller configured to compare a temperature value measured by the external air temperature sensor with a predetermined value and output a signal; and a control valve unit including a first control valve and a second control valve receiving a signal from the controller, and a first spool operated by the first control valve and a second spool operated by the second control valve.
    Type: Application
    Filed: October 14, 2013
    Publication date: September 24, 2015
    Inventor: Beom Kyun Yu