Patents by Inventor Thaddeus A. Chmielewski

Thaddeus A. Chmielewski 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).

  • Patent number: 11598240
    Abstract: Methods and systems are provided for estimation of a volume of liquid diesel exhaust fluid (DEF) contained within a DEF tank. In one example, a method for the estimation of the volume of liquid DEF in a DEF tank during DEF freezing conditions may include activating a heater contained within the DEF tank, and then switching estimation of the volume of liquid DEF via a first transfer function to estimation of the volume of liquid DEF via a second transfer function.
    Type: Grant
    Filed: April 1, 2021
    Date of Patent: March 7, 2023
    Assignee: Ford Global Technologies, LLC
    Inventors: Thaddeus A Chmielewski, Gurpreet Matharu, Marcus Bengtsson, Carlos Armesto, Bret Alan Zimmerman, Jim Bromham
  • Publication number: 20220316375
    Abstract: Methods and systems are provided for estimation of a volume of liquid diesel exhaust fluid (DEF) contained within a DEF tank. In one example, a method for the estimation of the volume of liquid DEF in a DEF tank during DEF freezing conditions may include activating a heater contained within the DEF tank, and then switching estimation of the volume of liquid DEF via a first transfer function to estimation of the volume of liquid DEF via a second transfer function.
    Type: Application
    Filed: April 1, 2021
    Publication date: October 6, 2022
    Inventors: Thaddeus A Chmielewski, Gurpreet Matharu, Marcus Bengtsson, Carlos Armesto, Bret Alan Zimmerman, Jim Bromham
  • Patent number: 8875493
    Abstract: A reactant delivery system for engine exhaust gas treatment may include a tank in which a reactant is received, a pumping device, a pressure relief device, and a reactant distribution device. The pumping device may have an inlet disposed within the interior of the tank to receive the reactant, and an outlet through which the reactant is discharged. The pressure relief device may have an inlet in fluid communication with the outlet of the pumping device, a primary outlet to discharge the reactant under pressure to a downstream location, and a bypass outlet through which at least some of the reactant discharged from the pumping device is selectively discharged. And the reactant distribution device may be in fluid communication with the bypass outlet of the pressure relief device and have a plurality of outlets to distribute the reactant to at least two different locations within the tank.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: November 4, 2014
    Assignee: TI Group Automotive Systems, L.L.C.
    Inventors: Thaddeus A. Chmielewski, Antonio J. DaSilva, David H. Ford, Eric J. Grant, Peter P. Kuperus, Glenn A. Moss, Joseph M. Ross
  • Patent number: 8359831
    Abstract: A reactant delivery system for engine exhaust gas treatment may include a tank in which a reactant is received, a pumping device, a pressure relief device, and a reactant distribution device. The pumping device may have an inlet disposed within the interior of the tank to receive the reactant, and an outlet through which the reactant is discharged. The pressure relief device may have an inlet in fluid communication with the outlet of the pumping device, a primary outlet to discharge the reactant under pressure to a downstream location, and a bypass outlet through which at least some of the reactant discharged from the pumping device is selectively discharged. And the reactant distribution device may be in fluid communication with the bypass outlet of the pressure relief device and have a plurality of outlets to distribute the reactant to at least two different locations within the tank.
    Type: Grant
    Filed: October 29, 2009
    Date of Patent: January 29, 2013
    Assignee: TI Group Automotive Systems, L.L.C.
    Inventors: Thaddeus A. Chmielewski, Antonio J. DaSilva, David H. Ford, Eric J. Grant, Peter P. Kuperus, Glenn A. Moss, Joseph M. Ross
  • Publication number: 20100107615
    Abstract: A reactant delivery system for engine exhaust gas treatment may include a tank in which a reactant is received, a pumping device, a pressure relief device, and a reactant distribution device. The pumping device may have an inlet disposed within the interior of the tank to receive the reactant, and an outlet through which the reactant is discharged. The pressure relief device may have an inlet in fluid communication with the outlet of the pumping device, a primary outlet to discharge the reactant under pressure to a downstream location, and a bypass outlet through which at least some of the reactant discharged from the pumping device is selectively discharged. And the reactant distribution device may be in fluid communication with the bypass outlet of the pressure relief device and have a plurality of outlets to distribute the reactant to at least two different locations within the tank.
    Type: Application
    Filed: October 29, 2009
    Publication date: May 6, 2010
    Applicant: TI GROUP AUTOMOTIVE SYSTEMS, L.L.C.
    Inventors: Thaddeus A. Chmielewski, Antonio J. DaSilva, David H. Ford, Eric J. Grant, Peter P. Kuperus, Glenn A. Moss, Joseph M. Ross