Patents by Inventor Christopher Lee Szymanski

Christopher Lee Szymanski 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).

  • Coking resistant after-treatment dosing value
    Patent number: 9416709
    Abstract: A dosing valve for administering a reducing agent into an exhaust stream within an exhaust manifold of an internal combustion engine. The dosing valve includes a valve needle internally coaxial to a valve body and held in a closed position by a force of compressed spring acting axially and held in relation to the valve needle and valve body. The negative impact of varnish and dehydrogenated compounds, or coking products, of hydrocarbon based reducing agents, is substantially reduced or eliminated. Additionally, this includes decreased sensitivity to the negative impact of the precipitates and crystals that come out of the solution due to temperature change with urea-based reducing agents.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: August 16, 2016
    Assignee: Continental Automotive Systems, Inc.
    Inventors: Hamid Sayer, Michael J. Hornby, Perry Robert Czimmek, Christopher Lee Szymanski
  • COKING RESISTANT AFTERTREATMENT DOSING VALUE AND METHOD OF MANUFACTURE
    Publication number: 20130333361
    Abstract: A dosing valve for administering a reducing agent into an exhaust stream within an exhaust manifold of an internal combustion engine. The dosing valve includes a valve needle internally coaxial to a valve body and held in a closed position by a force of compressed spring acting axially and held in relation to the valve needle and valve body. The negative impact of varnish and dehydrogenated compounds, or coking products, of hydrocarbon based reducing agents, is substantially reduced or eliminated. Additionally, this includes decreased sensitivity to the negative impact of the precipitates and crystals that come out of the solution due to temperature change with urea-based reducing agents.
    Type: Application
    Filed: June 15, 2012
    Publication date: December 19, 2013
    Applicant: CONTINENTAL AUTOMOTIVE SYSTEMS, INC.
    Inventors: Hamid Sayer, Michael J. Hornby, Perry Robert Czimmek, Christopher Lee Szymanski