Patents by Inventor Nicolas Duret
Nicolas Duret 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).
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Patent number: 8959899Abstract: SCR system for treating the exhaust gases of an internal combustion engine, this system comprising a line for feeding a urea solution into the exhaust gases and a pump capable both of feeding the urea solution into the exhaust gases and of purging at least one part of the line by sucking a gas therethrough by means of a suction device, this system also comprising a control unit capable of activating and/or deactivating the operation of the pump and that of the suction device in a sequential manner in the course of one and the same purge procedure.Type: GrantFiled: January 14, 2013Date of Patent: February 24, 2015Assignee: Inergy Automotive Systems ResearchInventors: Jean-Claude Habumuremyi, Frederic Peucat, Nicolas Duret, Stephane Leonard, Guillaume Zeller
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Patent number: 8615986Abstract: Process for transferring a liquid from a passive tank (1) for storing the liquid to an active tank (2) using a pump intended for pumping the liquid held in the passive tank (1) and transferring it to the active tank (2), according to which the pump is commanded so as to transfer liquid from the passive tank (1) to the active tank (2) when said active tank (2) has a liquid level below a set point level Lsp and when the passive tank (1) contains liquid at a temperature above the freezing point of the liquid.Type: GrantFiled: January 19, 2009Date of Patent: December 31, 2013Assignee: Inergy Automotive Systems Research (Societe Anonyme)Inventors: Jean-Baptiste Gouriet, Jean-Claude Habumuremyi, Nicolas Duret
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Patent number: 8474244Abstract: Method for controlling an injector intended for injecting a pollution-control liquid additive into the exhaust gases of an internal combustion engine at a flow rate governed by a given frequency and opening time of the injector, the injector having a calibration curve that establishes, at given frequency, pressure, temperature and nature of the liquid, the amount of liquid injected during an opening of the injector as a function of the duration of this opening, this curve comprising at least one linear zone (calibration line) and a non-linear zone, said method being characterized in that in the linear zone the parameters of the calibration line are used and in the non-linear zone use is made of a set opening time and a variable frequency according to at least one calibration point established for this purpose. SCR system to which this method can be applied.Type: GrantFiled: September 12, 2008Date of Patent: July 2, 2013Assignee: Inergy Automotive Systems Research (Societe Anonyme)Inventors: Nicolas Duret, Jean-Claude Habumuremyi, Frederic Peucat, Claude Mesjasz
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Patent number: 8448426Abstract: Method for heating a urea SCR system using at least two resistive heating elements (R1, R2), one of which (R1) is intended for heating one or some (part(s) of) component(s) always in contact with a substantial amount of urea and the other (R2) is intended for heating one or some (part(s) of) component(s) which are sometimes not in contact with a substantial amount of urea, and according to which, when starting the system in freezing conditions, the resistive element R1 is activated but the resistive element R2 is activated only when its component is actually in contact with a substantial amount of urea.Type: GrantFiled: September 12, 2008Date of Patent: May 28, 2013Assignee: Inergy Automotive Systems ResearchInventors: Frederic Peucat, Nicolas Duret, Jean-Claude Habumuremyi, Francois Dougnier, Stephane Leonard, Claude Mesjasz
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Patent number: 8393144Abstract: SCR system for treating the exhaust gases of an internal combustion engine, this system comprising a line for feeding a urea solution into the exhaust gases and a pump capable both of feeding the urea solution into the exhaust gases and of purging at least one part of the line by sucking a gas therethrough by means of a suction device, this system also comprising a control unit capable of activating and/or deactivating the operation of the pump and that of the suction device in a sequential manner in the course of one and the same purge procedure.Type: GrantFiled: September 12, 2008Date of Patent: March 12, 2013Assignee: Inergy Automotive Systems ResearchInventors: Jean-Claude Habumuremyi, Frederic Peucat, Nicolas Duret, Stephane Leonard, Guillaume Zeller
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Patent number: 8283608Abstract: Method for heating at least one component of an SCR system using several resistive heating elements, according to which these heating elements are fed in parallel by a current source and according to which a current sensor is placed in series with the current source and all the resistors, which are connected in parallel.Type: GrantFiled: July 24, 2008Date of Patent: October 9, 2012Assignee: Inergy Automotive Systems Research (Societe Anonyme)Inventors: Volodia Naydenov, Nicolas Duret
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Publication number: 20110139255Abstract: Process for transferring a liquid from a passive tank (1) for storing the liquid to an active tank (2) using a pump intended for pumping the liquid held in the passive tank (1) and transferring it to the active tank (2), according to which the pump is commanded so as to transfer liquid from the passive tank (1) to the active tank (2) when said active tank (2) has a liquid level below a set point level Lsp and when the passive tank (1) contains liquid at a temperature above the freezing point of the liquid.Type: ApplicationFiled: January 19, 2009Publication date: June 16, 2011Applicant: INERGY AUTOMOTIVE SYSTEMS RESEARCH (Societe Anonyme)Inventors: Jean-Baptiste Gouriet, Jean-Claude Habumuremyi, Nicolas Duret
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Publication number: 20110027740Abstract: Process for heating a urea component of a SCR system comprising besides said component, a temperature sensor, a heating device in the component, according to which: 1. the temperature (Tcpt) of the liquid in the component is determined and compared to a 1st setpoint (T0); 2. if the temperature (Tcpt) is greater than the 1st setpoint (T0), step 1 is repeated; 3. if the temperature (Tcpt) is less than or equal to the 1st setpoint (T0), the heating device is actuated, 4. the time during which the heating device is actuated is measured and the heating device is stopped if this time is greater than a time t1; 5. the temperature (Tcpt) is determined after a time t2 and compared to a 2nd setpoint (T1 with T1>T0); if the temperature (Tcpt) is less than or equal to the 2nd setpoint (T1) the heating device is actuated and step 4 is repeated; 6. if the temperature (Tcpt) is greater than the 2nd septoint (T1), the heating device is stopped and step 1 is repeated.Type: ApplicationFiled: March 11, 2009Publication date: February 3, 2011Applicant: INERGY AUTOMOTIVE SYSTEMS RESEARCH (société AnonymInventors: Frederic Peucat, Stephane Leonard, Jae Sik Choi, Nicolas Duret
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Publication number: 20100307142Abstract: SCR system for treating the exhaust gases of an internal combustion engine, this system comprising a line for feeding a urea solution into the exhaust gases and a pump capable both of feeding the urea solution into the exhaust gases and of purging at least one part of the line by sucking a gas therethrough by means of a suction device, this system also comprising a control unit capable of activating and/or deactivating the operation of the pump and that of the suction device in a sequential manner in the course of one and the same purge procedure.Type: ApplicationFiled: September 12, 2008Publication date: December 9, 2010Applicant: INERGY AUTOMOTIVE SYSTEMS RESEARCH(Societe AnonymeInventors: Jean-Claude Habumuremyi, Frederic Peucat, Nicolas Duret, Stephane Leonard, Guillaume Zeller
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Publication number: 20100205937Abstract: Method for controlling an injector intended for injecting a pollution-control liquid additive into the exhaust gases of an internal combustion engine at a flow rate governed by a given frequency and opening time of the injector, the injector having a calibration curve that establishes, at given frequency, pressure, temperature and nature of the liquid, the amount of liquid injected during an opening of the injector as a function of the duration of this opening, this curve comprising at least one linear zone (calibration line) and a non-linear zone, said method being characterized in that in the linear zone the parameters of the calibration line are used and in the non-linear zone use is made of a set opening time and a variable frequency according to at least one calibration point established for this purpose. SCR system to which this method can be applied.Type: ApplicationFiled: September 12, 2008Publication date: August 19, 2010Applicant: INERGY AUTOMATIVE SYSTEMS RESEARCH (Societe Anonyme)Inventors: Nicolas Duret, Jean-Claude Habumuremyi, Frederic Peucat, Claude Mesjasz
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Publication number: 20100187218Abstract: Method for heating at least one component of an SCR system using several resistive heating elements, according to which these heating elements are fed in parallel by a current source and according to which a current sensor is placed in series with the current source and all the resistors, which are connected in parallel.Type: ApplicationFiled: July 24, 2008Publication date: July 29, 2010Inventors: Volodia Naydenov, Nicolas Duret
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Publication number: 20100186374Abstract: Method for heating a urea SCR system using at least two resistive heating elements (R1, R2), one of which (R1) is intended for heating one or some (part(s) of) component(s) always in contact with a substantial amount of urea and the other (R2) is intended for heating one or some (part(s) of) component(s) which are sometimes not in contact with a substantial amount of urea, and according to which, when starting the system in freezing conditions, the resistive element R1 is activated but the resistive element R2 is activated only when its component is actually in contact with a substantial amount of urea.Type: ApplicationFiled: September 12, 2008Publication date: July 29, 2010Inventors: Frederic Peucat, Nicolas Duret, Jean-Claude Habumuremyi, Francois Dougnier, Stephane Leonard, Claude Mesjasz