Patents by Inventor Christine Rigaudeau

Christine Rigaudeau 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: 7552585
    Abstract: A system for assisting regeneration of a particle filter in an exhaust line (3) of a motor vehicle diesel engine (1) associated with: air admission means (2); exhaust gas recycling means (4); a turbocompressor (5); a particle filter (7); a common system (8) for feeding fuel to the engine; means (16) for adding to the fuel an additive adapted to be deposited on the particle filter (7) to reduce the combustion temperature of particles trapped therein; means (20, 21, 22) for acquiring information relating to operation of the engine; and monitoring means (17) adapted to trigger a phase of regeneration of the particle filter by combustion of the particles trapped therein by triggering a phase of multiple injection of fuel. The filter (7) is impregnated with a catalyst for oxidizing hydrocarbons and CO present in the exhaust gases.
    Type: Grant
    Filed: January 6, 2004
    Date of Patent: June 30, 2009
    Assignee: Peugeot Citroen Automobile SA
    Inventors: Christine Rigaudeau, Yvan Agliani, Marion Wermester
  • Patent number: 7328573
    Abstract: A system for assisting regeneration of a particle filter of an exhaust line (3) of a diesel engine associated with, in particular: a particle filter (7); an oxidation catalytic converter (6); a common system (8) for feeding fuel to the cylinders of the engine; means (16) for adding to the fuel an additive adapted to reduce the combustion temperature of the trapped particles and propagate their combustion; and monitoring means (17) for triggering a phase of regeneration of the particle filter by combustion of the particles trapped therein during a phase of multiple injections of fuel; characterized in that the particle filter (7) is impregnated with a catalyst for oxidizing the hydrocarbons and CO present in the exhaust gases flowing through said particle filter.
    Type: Grant
    Filed: January 6, 2004
    Date of Patent: February 12, 2008
    Assignee: Peugeot Citroen Automobiles SA
    Inventors: Christine Rigaudeau, Yvan Agliany, Marion Wermester
  • Publication number: 20060201140
    Abstract: A system for assisting regeneration of a particle filter of an exhaust line (3) of a diesel engine associated with, in particular: a particle filter (7); an oxidation catalytic converter (6); a common system (8) for feeding fuel to the cylinders of the engine; means (16) for adding to the fuel an additive adapted to reduce the combustion temperature of the trapped particles and propagate their combustion; and monitoring means (17) for triggering a phase of regeneration of the particle filter by combustion of the particles trapped therein during a phase of multiple injections of fuel; characterized in that the particle filter (7) is impregnated with a catalyst for oxidizing the hydrocarbons and CO present in the exhaust gases flowing through said particle filter.
    Type: Application
    Filed: January 6, 2004
    Publication date: September 14, 2006
    Inventors: Christine Rigaudeau, Yvan Agliany, Marion Wermester
  • Publication number: 20060144039
    Abstract: A system for assisting regeneration of a particle filter in an exhaust line (3) of a motor vehicle diesel engine (1) associated with: air admission means (2); exhaust gas recycling means (4); a turbocompressor (5); a particle filter (7); a common system (8) for feeding fuel to the engine; means (16) for adding to the fuel an additive adapted to be deposited on the particle filter (7) to reduce the combustion temperature of particles trapped therein; means (20, 21, 22) for acquiring information relating to operation of the engine; and monitoring means (17) adapted to trigger a phase of regeneration of the particle filter by combustion of the particles trapped therein by triggering a phase of multiple injection of fuel. The filter (7) is impregnated with a catalyst for oxidizing hydrocarbons and CO present in the exhaust gases.
    Type: Application
    Filed: January 6, 2004
    Publication date: July 6, 2006
    Applicant: Peugeot Citroen Automobiles SA
    Inventor: Christine Rigaudeau
  • Patent number: 6793716
    Abstract: The particulate filter is disassembled in order to separate it from the exhaust line and the filtering support of the particulate filter is contacted with a cleaning solution, for example contained in a tank, for a period sufficient to ensure soaking of the filtering support, thereby facilitating the detachment of residues retained in the filtering support.
    Type: Grant
    Filed: October 10, 2002
    Date of Patent: September 21, 2004
    Assignee: Peugeot Citroen Automobiles SA
    Inventors: Christine Rigaudeau, Christian Walter
  • Publication number: 20030079607
    Abstract: The particulate filter (4) is disassembled in order to separate it from the exhaust line and the filtering support (4′) of the particulate filter is contacted with a cleaning solution, for example contained in a tank (2), for a period sufficient to ensure soaking of the filtering support (4′), thereby facilitating the detachment of residues retained in the filtering support (4′).
    Type: Application
    Filed: October 10, 2002
    Publication date: May 1, 2003
    Inventors: Christine Rigaudeau, Christian Walter