Patents by Inventor Yung Bui

Yung Bui 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: 20060191254
    Abstract: A system for mixing exhaust gas components is provided. The system may include an exhaust passage and a substantially enclosed distribution chamber disposed within the exhaust passage. The distribution chamber may include an outer wall defining a chamber volume and at least one opening disposed in the outer wall configured to provide fluid communication between the chamber volume and the exhaust passage. An additive supply device may be configured to supply at least one exhaust gas additive to the chamber volume.
    Type: Application
    Filed: February 28, 2005
    Publication date: August 31, 2006
    Inventors: Yung Bui, Balamurugesh Thirunavukarasu, Subodh Biswas
  • Publication number: 20060144375
    Abstract: A method and apparatus for controlling the ratio of ambient air to recirculated gases in an internal combustion engine, wherein an gas injector includes a intake air conduit defining a ambient air flow path, an actuator connected to the intake air conduit, a recirculated gas conduit operatively coupled and disposed within the intake air conduit defining a recirculated gas flow path and a valve apparatus operatively coupled to the intake air conduit and recirculated gas conduit. The valve apparatus includes; a shaft, a throttle valve coupled to the shaft and in fluid communication with the ambient air flow and a recirculated gas valve coupled to the shaft in fluid communication with the recirculated gas flow. The shaft rotates one of the throttle valve and the recirculated gas valve independent of the rotation of the other one of throttle valve and said recirculated gas valve.
    Type: Application
    Filed: January 6, 2005
    Publication date: July 6, 2006
    Inventors: David Atkinson, Yung Bui, Michael Evancik, Paul Gamble
  • Patent number: 7069919
    Abstract: A method and apparatus for controlling the ratio of ambient air to recirculated gases in an internal combustion engine, wherein an gas injector includes a intake air conduit defining a ambient air flow path, an actuator connected to the intake air conduit, a recirculated gas conduit operatively coupled and disposed within the intake air conduit defining a recirculated gas flow path and a valve apparatus operatively coupled to the intake air conduit and recirculated gas conduit. The valve apparatus includes; a shaft, a throttle valve coupled to the shaft and in fluid communication with the ambient air flow and a recirculated gas valve coupled to the shaft in fluid communication with the recirculated gas flow. The shaft rotates one of the throttle valve and the recirculated gas valve independent of the rotation of the other one of throttle valve and said recirculated gas valve.
    Type: Grant
    Filed: January 6, 2005
    Date of Patent: July 4, 2006
    Assignee: Caterpillar Inc
    Inventors: David C. Atkinson, Yung Bui, Michael Evancik, Paul A. Gamble
  • Publication number: 20060124116
    Abstract: A clean gas induction (CGI) injector having an intake air conduit with inner diameter and defining an intake air flow path, and a CGI conduit defining a clean gas flow path. The CGI conduit disposed within the intake air conduit includes an open end portion having an inner surface and an outer surface. The outer surface, having a substantially less diameter than the inner diameter of the intake air conduit, is formed to restrict the intake air flow.
    Type: Application
    Filed: December 15, 2004
    Publication date: June 15, 2006
    Inventor: Yung Bui