Patents by Inventor Matthew Thomas Wolk

Matthew Thomas Wolk 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).

  • NOemission control using large volume EGR
    Patent number: 9051903
    Abstract: An EGR system is disclosed for reducing NOx emissions and that may eliminate the need for a SCR system. The disclosed EGR system includes dual valves, including a hot EGR valve disposed in the exhaust manifold and a cold EGR valve disposed upstream of the intake manifold. A VGT turbine with adjustable vanes may also be employed with a low pressure turbine. Intake air may proceed through both a high pressure compressor as well as a low pressure compressor and the high pressure compressor may be substantially bypassed by way of a bypass valve disposed between the low pressure compressor and the air intake. The EGR system may be controlled by adjusting the positions of the valves and VGT turbine vanes.
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: June 9, 2015
    Assignee: Caterpillar Inc.
    Inventor: Matthew Thomas Wolk
  • NOx Emission Control Using Large Volume EGR
    Publication number: 20140053553
    Abstract: An EGR system is disclosed for reducing NOx emissions and that may eliminate the need for a SCR system. The disclosed EGR system includes dual valves, including a hot EGR valve disposed in the exhaust manifold and a cold EGR valve disposed upstream of the intake manifold. A VGT turbine with adjustable vanes may also be employed with a low pressure turbine. Intake air may proceed through both a high pressure compressor as well as a low pressure compressor and the high pressure compressor may be substantially bypassed by way of a bypass valve disposed between the low pressure compressor and the air intake. The EGR system may be controlled by adjusting the positions of the valves and VGT turbine vanes.
    Type: Application
    Filed: August 24, 2012
    Publication date: February 27, 2014
    Applicant: CATERPILLAR, INC.
    Inventor: Matthew Thomas Wolk