Patents by Inventor Paulina Ramfelt

Paulina Ramfelt 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).

  • Method and system for regenerating an exhaust gas purification unit
    Patent number: 9027327
    Abstract: A method for regenerating an exhaust gas purification unit arranged in an internal combustion engine system includes setting a predefined minimum engine speed such that the exhaust gas mass flow exceeds a predefined flow value during the regeneration process. An internal combustion engine system including an exhaust gas purification unit adapted to be operated according to the method is also provided.
    Type: Grant
    Filed: April 16, 2010
    Date of Patent: May 12, 2015
    Assignee: Volvo Lasivagnar AB
    Inventors: Niclas Johnson, Marcus Steen, Frank Dennis Langervik, Paulina Ramfelt
  • METHOD AND SYSTEM FOR REGENERATING AN EXHAUST GAS PURIFICATION UNIT
    Publication number: 20100313551
    Abstract: A method for regenerating an exhaust gas purification unit arranged in an internal combustion engine system includes setting a predefined minimum engine speed such that the exhaust gas mass flow exceeds a predefined flow value during the regeneration process. An internal combustion engine system including an exhaust gas purification unit adapted to be operated according to the method is also provided.
    Type: Application
    Filed: April 16, 2010
    Publication date: December 16, 2010
    Applicant: VOLVO LASTVAGNAR AB
    Inventors: Niclas Johnson, Marcus Steen, Frank Dennis Langervik, Paulina Ramfelt
  • Exhaust Gas Aftertreatment System
    Publication number: 20090007551
    Abstract: An exhaust gas after treatment system for treating exhaust gases from an internal combustion engine is provided. The system includes a soot catalytic converter and an SCR catalytic converter, which reduces NOx-emissions by means of a reagent delivered via an injector located upstream of the SCR catalytic converter. According to the invention the soot catalytic converter is located between the injector and the SCR-catalytic converter.
    Type: Application
    Filed: January 24, 2006
    Publication date: January 8, 2009
    Applicant: VOLVO LASTVAGNAR AB
    Inventors: Gert-Ove Wahlstrom, Paulina Ramfelt