Patents by Inventor Rebecca Grzesiak

Rebecca Grzesiak 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).

  • System and method for post-shutdown temperature management and purge
    Patent number: 8997467
    Abstract: A machine includes an engine having a coolant system, an electrical system, and an exhaust system. A diesel exhaust fluid (DEF) injector provides DEF into the exhaust system. The DEF injector includes a housing that forms a coolant passage therethrough. The coolant passage is adapted to accommodate a flow of coolant through the coolant passage for cooling the DEF injector. A DEF pump is arranged to provide DEF to the DEF injector from a reservoir during operation of the engine. A power management module is associated with the electrical system, the DEF injector and the DEF pump. An auxiliary power unit is associated with the power management module and is configured to remain active after the engine electrical system has been deactivated. The power management module is configured to cause a purge of the DEF from the DEF injector when the engine is shut down.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: April 7, 2015
    Assignee: Caterpillar Inc.
    Inventors: Rebecca Grzesiak, Michael J. Braun
  • System and Method for Post-Shutdown Temperature Management and Purge
    Publication number: 20140260199
    Abstract: A machine includes an engine having a coolant system, an electrical system, and an exhaust system. A diesel exhaust fluid (DEF) injector provides DEF into the exhaust system. The DEF injector includes a housing that forms a coolant passage therethrough. The coolant passage is adapted to accommodate a flow of coolant through the coolant passage for cooling the DEF injector. A DEF pump is arranged to provide DEF to the DEF injector from a reservoir during operation of the engine. A power management module is associated with the electrical system, the DEF injector and the DEF pump. An auxiliary power unit is associated with the power management module and is configured to remain active after the engine electrical system has been deactivated. The power management module is configured to cause a purge of the DEF from the DEF injector when the engine is shut down.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Inventors: Rebecca Grzesiak, Michael J. Braun