Patents by Inventor Christophe Charial

Christophe Charial 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: 9051865
    Abstract: The invention relates to a method for controlling a system for the treatment of exhaust gases in an exhaust line of an internal combustion engine. The method comprises estimating the molar ratio of nitrogen dioxide to nitrogen monoxide at the inlet of an NOx selective reduction catalyst based on cartography that is dependent on the residence time of the exhaust gases in an oxidation catalyst disposed upstream of the gas treatment means leading to a reduction of nitrogen oxides.
    Type: Grant
    Filed: October 18, 2010
    Date of Patent: June 9, 2015
    Assignee: Peugeot Citroen Automobilies SA.
    Inventors: Christophe Charial, Clement Grise
  • Patent number: 8869515
    Abstract: The invention relates to a method for controlling a system for treating NOx in an exhaust line of an internal combustion engine, said system comprising means for introducing a reducing agent into the exhaust line upstream of an NOx reduction catalyst. The invention is characterized in that it consists in estimating the efficiency of the treatment in relation to a maximum conversion potential obtained if the ratio between the quantity of injected reducer and the quantity of NOx in the gas complies with a given set value and if the mass of reducing agent stored in the catalyst complies with a given storage set value.
    Type: Grant
    Filed: October 18, 2010
    Date of Patent: October 28, 2014
    Assignee: Peugeot Citroen Automobiles SA
    Inventors: Christophe Charial, Clement Grise
  • Patent number: 8490384
    Abstract: The invention relates to a method for correcting a model for determining the amount of reducing agent to inject for the selective catalytic reduction of nitrogen oxides contained in exhaust gases, which includes the following steps: determining an amount of reducing agent to inject based on the amount of nitrogen oxides emitted and an initial mathematical model; determining, by taking a measurement from the catalyst of the amount and/or nature of the gas, whether or not the reducing reaction is carried out under correct conditions; if an anomaly is detected, adjusting the amount of reducing agent to inject; and if the use of said method leads to a number of repeated adjustments of the same nature greater than a predetermined value N: the mathematical model is corrected, and the initial mathematical model is replaced by the corrected model.
    Type: Grant
    Filed: May 5, 2009
    Date of Patent: July 23, 2013
    Assignee: Peugeot Citroen Automobiles SA
    Inventor: Christophe Charial
  • Publication number: 20120222404
    Abstract: The invention relates to a method for controlling a system for treating NOx in an exhaust line of an internal combustion engine, said system comprising means for introducing a reducing agent into the exhaust line upstream of an NOx reduction catalyst. The invention is characterised in that it consists in estimating the efficiency of the treatment in relation to a maximum conversion potential obtained if the ratio between the quantity of injected reducer and the quantity of NOx in the gas complies with a given set value and if the mass of reducing agent stored in the catalyst complies with a given storage set value.
    Type: Application
    Filed: October 18, 2010
    Publication date: September 6, 2012
    Applicant: PEUGEOT CITROEN AUTOMOBILES SA
    Inventors: Christophe Charial, Clement Grise
  • Publication number: 20120174563
    Abstract: The invention relates to a device (16) for regulating the injection of a quantity of reducer in the gaseous phase, comprising: a reducer supply channel (18), a pressure regulator (20) for regulating the pressure in the channel, members (24) for detecting the pressure downstream of the regulator (20), a reducer injector (22), and a computer controlling the injector according to the measured pressure.
    Type: Application
    Filed: July 26, 2010
    Publication date: July 12, 2012
    Applicant: Peugeot Citroen Automobiles SA
    Inventor: Christophe Charial
  • Publication number: 20120096836
    Abstract: The invention relates to a method for monitoring the pollutant emissions of a combustion engine comprising at least one piston, the translatable movement of which defines a combustion chamber, said engine being combined with an exhaust line that, in the direction of exhaust gas flow, comprises an oxidation catalyst, an NOx reduction catalyst, and a particle filter, the method being characterized by the use of a fuel comprising an additive assisting in soot combustion when re-refined by the particle filter, and according to at least one operating mode of the engine, the fuel is injected in accordance with a calibration minimizing carbon dioxide discharges by the engine.
    Type: Application
    Filed: February 12, 2010
    Publication date: April 26, 2012
    Applicant: Peugeot Citroen Automobile SA
    Inventors: Arnaud Audouin, Christophe Charial, Pierre-Henri Maesse
  • Publication number: 20120011846
    Abstract: The invention relates to a method for monitoring the pollutant emissions of a combustion engine comprising at least one piston (1), the translatable movement of which defines a combustion chamber, said engine being combined with an exhaust line (9) that comprises, in the direction of the exhaust gas flow, an oxidation catalyst (14), an NOx reduction catalyst (15), and a particle filter (18), the method being characterized by the use of a fuel comprising an additive assisting in soot combustion when re-refined by the particle filter (18) and, according to at least one operating mode of the engine, the fuel is injected in accordance with a calibration minimizing carbon dioxide discharges by the engine.
    Type: Application
    Filed: February 12, 2010
    Publication date: January 19, 2012
    Applicant: PEUGEOT CITROEN AUTOMOBILES SA
    Inventors: Arnaud Audouin, Christophe Charial, Pierre-Henri Maesse
  • Publication number: 20110094209
    Abstract: The invention relates to a method for correcting a model for determining the amount of reducing agent to inject for the selective catalytic reduction of nitrogen oxides contained in exhaust gases, which includes the following steps: determining an amount of reducing agent to inject based on the amount of nitrogen oxides emitted and an initial mathematical model; determining, by taking a measurement from the catalyst of the amount and/or nature of the gas, whether or not the reducing reaction is carried out under correct conditions; if an anomaly is detected, adjusting the amount of reducing agent to inject; and if the use of said method leads to a number of repeated adjustments of the same nature greater than a predetermined value N: the mathematical model is corrected, and the initial mathematical model is replaced by the corrected model.
    Type: Application
    Filed: May 5, 2009
    Publication date: April 28, 2011
    Applicant: PEUGEOT CITROEN AUTOMOBILES SA
    Inventor: Christophe Charial