Patents by Inventor Sara Erkfeldt

Sara Erkfeldt 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).

  • Exhaust aftertreatment system where an activator material is added to the reductant fed to the catalytic converter
    Patent number: 9181832
    Abstract: An exhaust gas after treatment system includes a catalytic converter arrangement with at least one catalytic material, wherein the catalytic converter arrangement is arranged in an exhaust gas path downstream of a combustion engine, and further includes one or more dosing interfaces for feeding at least one reducing agent for reducing an NOx content in the exhaust gas. The one or more dosing interfaces are arranged to feed at least one activator material to the exhaust gas. The activator material causes an enhancement of a catalytic activity of the catalytic material compared to the catalytic activity of the catalytic material without the presence of the activator material at least in a given temperature range.
    Type: Grant
    Filed: March 21, 2011
    Date of Patent: November 10, 2015
    Assignee: Volvo Technology Corporation
    Inventor: Sara Erkfeldt
  • EXHAUST AFTERTREATMENT SYSTEM WHERE AN ACTIVATOR MATERIAL IS ADDED TO THE REDUCTANT FED TO THE CATALYTIC CONVERTER
    Publication number: 20140318102
    Abstract: An exhaust gas after treatment system includes a catalytic converter arrangement with at least one catalytic material, wherein the catalytic converter arrangement is arranged in an exhaust gas path downstream of a combustion engine, and further includes one or more dosing interfaces for feeding at least one reducing agent for reducing an NOx content in the exhaust gas. The one or more dosing interfaces are arranged to feed at least one activator material to the exhaust gas. The activator material causes an enhancement of a catalytic activity of the catalytic material compared to the catalytic activity of the catalytic material without the presence of the activator material at least in a given temperature range.
    Type: Application
    Filed: March 21, 2011
    Publication date: October 30, 2014
    Applicant: VOLVO TECHNOLOGY CORPORATION
    Inventor: Sara Erkfeldt