Patents by Inventor Xavier Jaffrezic
Xavier Jaffrezic 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: 10668824Abstract: A method that calculates a setpoint for managing the fuel and electricity consumption of a hybrid motor vehicle includes: a) acquiring, by a navigation system on board the hybrid motor vehicle, a route to be traveled; b) dividing the route into consecutive portions; c) assigning attributes that characterize each portion; d) determining, for each of the portions, a curve or a map that links each fuel consumption value of the hybrid motor vehicle over the portion to a charge or discharge value of the traction battery; e) determining an optimal point of each curve or map, which makes it possible to minimize the fuel consumption of the hybrid motor vehicle over the entire route and to completely discharge the traction battery by the end of the route; and f) producing an energy management setpoint in accordance with the coordinates of the optimal points.Type: GrantFiled: June 15, 2016Date of Patent: June 2, 2020Assignee: RENAULT s.a.sInventors: Abdel-Djalil Ourabah, Xavier Jaffrezic, Atef Gayed, Benjamin Quost, Thierry Denoeux
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Publication number: 20180281620Abstract: A method that calculates a setpoint for managing the fuel and electricity consumption of a hybrid motor vehicle includes: a) acquiring, by a navigation system on board the hybrid motor vehicle, a route to be traveled; b) dividing the route into consecutive portions; c) assigning attributes that characterize each portion; d) determining, for each of the portions, a curve or a map that links each fuel consumption value of the hybrid motor vehicle over the portion to a charge or discharge value of the traction battery; e) determining an optimal point of each curve or map, which makes it possible to minimize the fuel consumption of the hybrid motor vehicle over the entire route and to completely discharge the traction battery by the end of the route; and f) producing an energy management setpoint in accordance with the coordinates of the optimal points.Type: ApplicationFiled: June 15, 2016Publication date: October 4, 2018Applicant: RENAULT s.a.sInventors: Abdel-Djalil OURABAH, Xavier JAFFREZIC, Atef GAYED, Benjamin QUOST, Thierry DENOEUX
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Patent number: 8939245Abstract: A system for connecting a set of batteries configured to supply at least one electric motor for powering a motor vehicle and configured to be accommodated inside a compartment provided on the vehicle. Each battery includes a logic processing unit, a communication module, and a mechanism for connecting to the motor. The vehicle includes a logic processing unit connected to a stationary auxiliary battery, a communication module capable of communicating with the communication module of each battery, and a mechanism for locking and blocking the batteries in position.Type: GrantFiled: February 4, 2011Date of Patent: January 27, 2015Assignee: Renault S.A.S.Inventor: Xavier Jaffrezic
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Patent number: 8810115Abstract: A sparkplug including an induction coil and an electrode. The induction coil includes two end portions, the electrode extending in a continuation of one of the two end portions. The induction coil includes a conducting wire wound to form a succession of turns, the one of the two end portions having a terminal turn connected to the electrode. The one of the two end portions includes a plurality of coaxial end turns that extend between the terminal turn and an upstream turn, and the terminal turn has a diameter smaller than the diameter of the upstream turn so to reduce strength of the electric field induced in the one of said two end portions near the terminal turn.Type: GrantFiled: September 8, 2011Date of Patent: August 19, 2014Assignee: Renault S.A.S.Inventors: Marc Pariente, Andre Agneray, Xavier Jaffrezic
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Patent number: 8646429Abstract: A plasma generating device including: a supply circuit including a switch controlled by a control signal for applying an intermediate voltage on an output of the control circuit at a frequency defined by the control signal; a plurality of plasma-generating plug coils arranged in parallel on the output via connectors, each connector being adapted to be removably connected to a corresponding plug coil and including a mechanism adapted to offset the resonance frequency of the plug coil so that each plug coil has a distinct resonance frequency; a control device of the supply circuit, that determines the control frequency from the resonance frequencies of the plug coils to selectively control the plug coils according to the control frequency used.Type: GrantFiled: February 25, 2008Date of Patent: February 11, 2014Assignee: Renault S.A.S.Inventors: Andre Agneray, Clement Nouvel, Xavier Jaffrezic
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Publication number: 20130293086Abstract: A sparkplug including an induction coil and an electrode. The induction coil includes two end portions, the electrode extending in a continuation of one of the two end portions. The induction coil includes a conducting wire wound to form a succession of turns, the one of the two end portions having a terminal turn connected to the electrode. The one of the two end portions includes a plurality of coaxial end turns that extend between the terminal turn and an upstream turn, and the terminal turn has a diameter smaller than the diameter of the upstream turn so to reduce strength of the electric field induced in the one of said two end portions near the terminal turn.Type: ApplicationFiled: September 8, 2011Publication date: November 7, 2013Applicant: RENAULT S.A.S.Inventors: Marc Pariente, Andre Agneray, Xavier Jaffrezic
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Patent number: 8528532Abstract: A supply device for a radio frequency ignition system, including a supply circuit to provide a supply voltage to an output connected to a plasma generation resonator at a frequency defined by a control signal provided by a control device for the supply circuit. The control device includes a receiver interface for a determination request for the optimum control frequency, a receiver interface for receiving signals measuring the voltage at the pins of a capacitor in the supply circuit, a determination module for the optimum control frequency, to provide successive different control frequencies for the supply circuit for successive ignition commands on reception of a request and to determine an optimum control frequency based on received measured signals.Type: GrantFiled: February 12, 2008Date of Patent: September 10, 2013Assignee: RENAULT s.a.s.Inventors: Andre Agneray, Julien Couillaud, Xavier Jaffrezic
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Patent number: 8397703Abstract: A high voltage resonator-amplifier for a radiofrequency ignition system that can be used in an internal combustion engine, the resonator-amplifier including at least two electrodes, a coil arranged in alignment with the electrodes along a longitudinal axis, and a linking mechanism retaining the coil and the electrodes in a relatively fixed position. The coil is wound around a closed bend which in turn wraps around the longitudinal axis.Type: GrantFiled: February 15, 2010Date of Patent: March 19, 2013Assignee: Renault S.A.S.Inventors: Xavier Jaffrezic, Marc Pariente, Andre Agneray
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Patent number: 8342147Abstract: A method for controlling a radio-frequency plasma generator including a supply circuit with a switch controlled by at least one control pulse train, for applying an intermediate voltage at a control frequency on an output to which is connected a resonator for generating a spark between two electrodes when a high voltage level is applied to the output. The method receives first and second measurement signals respectively representative of the operation of a combustion engine and of the type of spark generated; and real-time adjusts, based on the received measurement signals, at least one parameter selected from at least the intermediate voltage level, the control frequency, and the duration of the control train, to promote branching of the spark generated.Type: GrantFiled: February 13, 2008Date of Patent: January 1, 2013Assignee: Renault S.A.S.Inventors: Clement Nouvel, Andre Agneray, Xavier Jaffrezic
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Publication number: 20120298435Abstract: A system for connecting a set of batteries configured to supply at least one electric motor for powering a motor vehicle and configured to be accommodated inside a compartment provided on the vehicle. Each battery includes a logic processing unit, a communication module, and a mechanism for connecting to the motor. The vehicle includes a logic processing unit connected to a stationary auxiliary battery, a communication module capable of communicating with the communication module of each battery, and a mechanism for locking and blocking the batteries in position.Type: ApplicationFiled: February 4, 2011Publication date: November 29, 2012Applicant: RENAULT S.A.S.Inventor: Xavier Jaffrezic
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Patent number: 8316832Abstract: A radiofrequency ignition device including: a control capable of generating an ignition control signal; a supply circuit controlled by the ignition control signal for applying a supply voltage on an output interface of the supply circuit at a frequency defined by the control signal; at least one plasma generation resonator connected on an output interface of the supply circuit and capable of generating a spark between two ignition electrodes of the resonator upon an ignition control; a mechanism measuring an electric parameter representative of a variation in a supply voltage of the resonator; and a module determining the fouling condition of the electrodes based on the measured electric parameter and on a predetermined reference value.Type: GrantFiled: June 4, 2008Date of Patent: November 27, 2012Assignee: Renault S.A.S.Inventors: Franck DeLoraine, Julien Couillaud, Xavier Jaffrezic
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Publication number: 20120086325Abstract: A high voltage resonator-amplifier for a radiofrequency ignition system that can be used in an internal combustion engine, the resonator-amplifier including at least two electrodes, a coil arranged in alignment with the electrodes along a longitudinal axis, and a linking mechanism retaining the coil and the electrodes in a relatively fixed position. The coil is wound around a closed bend which in turn wraps around the longitudinal axis.Type: ApplicationFiled: February 15, 2010Publication date: April 12, 2012Applicant: RENAULT S.A.S.Inventors: Xavier Jaffrezic, Marc Pariente, Andre Agneray
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Patent number: 7915795Abstract: A spark plug for an internal combustion engine of a motor vehicle, having a substantially cylindrical general form, includes an essentially capacitive lower part and an essentially inductive upper part. The lower part includes two coaxial electrodes, including a central electrode with an axis and a shell electrode that surrounds the central electrode, and an insulator inserted between the central electrode and the shell electrode. The upper part includes a central mandrel surrounded by a coil, a bottom end part of which overlaps a top end part of the central electrode in a radial direction, an external casing, and an insulator inserted radially between the casing and the coil. The top end part of the central electrode has a coating of material which is more electrically conductive than the material of the central electrode and has no ferromagnetic properties.Type: GrantFiled: September 28, 2006Date of Patent: March 29, 2011Assignee: Renault S.A.S.Inventors: Xavier Jaffrezic, Marc Pariente
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Publication number: 20100313841Abstract: A plasma generating device including: a supply circuit including a switch controlled by a control signal for applying an intermediate voltage on an output of the control circuit at a frequency defined by the control signal; a plurality of plasma-generating plug coils arranged in parallel on the output via connectors, each connector being adapted to be removably connected to a corresponding plug coil and including a mechanism adapted to offset the resonance frequency of the plug coil so that each plug coil has a distinct resonance frequency; a control device of the supply circuit, that determines the control frequency from the resonance frequencies of the plug coils to selectively control the plug coils according to the control frequency used.Type: ApplicationFiled: February 25, 2008Publication date: December 16, 2010Applicant: RENAULT S.A.S.Inventors: Andre Agneray, Clement Nouvel, Xavier Jaffrezic
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Patent number: 7843117Abstract: The invention relates to a plasma-generating spark plug which undergoes excitation in the radio frequency domain. The invention comprises at least one first metallic electrode (12, 14), an insulator (13), one of which is equipped with a housing (130) in which the other element (13, 14) is mounted with a gap (15, 16) therebetween. The surface of the insulator (13) opposite the first electrode (12, 14) is metalized.Type: GrantFiled: January 26, 2006Date of Patent: November 30, 2010Assignee: Renault S.A.S.Inventors: Xavier Jaffrezic, Andre Agneray
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Publication number: 20100251995Abstract: A method for controlling a radio-frequency plasma generator including a supply circuit with a switch controlled by at least one control pulse train, for applying an intermediate voltage at a control frequency on an output to which is connected a resonator for generating a spark between two electrodes when a high voltage level is applied to the output. The method receives first and second measurement signals respectively representative of the operation of a combustion engine and of the type of spark generated; and real-time adjusts, based on the received measurement signals, at least one parameter selected from at least the intermediate voltage level, the control frequency, and the duration of the control train, to promote branching of the spark generated.Type: ApplicationFiled: February 13, 2008Publication date: October 7, 2010Applicant: RENAULT S.A.S.Inventors: Clement Nouvel, Andre Agneray, Xavier Jaffrezic
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Publication number: 20100206276Abstract: A radiofrequency ignition device including: a control capable of generating an ignition control signal; a supply circuit controlled by the ignition control signal for applying a supply voltage on an output interface of the supply circuit at a frequency defined by the control signal; at least one plasma generation resonator connected on an output interface of the supply circuit and capable of generating a spark between two ignition electrodes of the resonator upon an ignition control; a mechanism measuring an electric parameter representative of a variation in a supply voltage of the resonator; and a module determining the fouling condition of the electrodes based on the measured electric parameter and on a predetermined reference value.Type: ApplicationFiled: June 4, 2008Publication date: August 19, 2010Applicant: RENAULT S.A.S.Inventors: Franck Deloraine, Julien Couillaud, Xavier Jaffrezic
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Patent number: 7777401Abstract: An essentially-elongated spark plug for an internal combustion engine of a motor vehicle, including: an essentially-capacitive lower part including two coaxial electrodes; an essentially-inductive upper part including a central mandrel, a coaxial winding around the mandrel, and an external tubular casing that serves as electromagnetic armor; and an insulant disposed radially between the casing and the winding. The essentially-inductive upper part includes a second internal casing of electromagnetic armor, which is disposed radially between the insulant and the external casing.Type: GrantFiled: May 29, 2006Date of Patent: August 17, 2010Assignee: RENAULT s.a.s.Inventors: Xavier Jaffrezic, Andre Agneray
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Patent number: 7741761Abstract: A radiofrequency plasma spark plug configured to equip a combustion chamber including: an annular shell with a main axis; a central electrode made of a conductive material, extending along the main axis and including an inner portion arranged inside the annular shell and an outer portion arranged outside the annular shell; an annular electrically insulating part extending at least about the inner portion of the central electrode so as to be interposed between the shell and the electrode, the insulating part only covering part of the outer portion of the central electrode. The insulating part includes an annular flange concealing the entire circular terminal surface of the shell relative to the uncovered part of the electrode.Type: GrantFiled: October 27, 2005Date of Patent: June 22, 2010Assignee: RENAULT s.a.s.Inventors: Xavier Jaffrezic, Andre Agneray
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Publication number: 20100116257Abstract: A supply device for a radio frequency ignition system, including a supply circuit to provide a supply voltage to an output connected to a plasma generation resonator at a frequency defined by a control signal provided by a control device for the supply circuit. The control device includes a receiver interface for a determination request for the optimum control frequency, a receiver interface for receiving signals measuring the voltage at the pins of a capacitor in the supply circuit, a determination module for the optimum control frequency, to provide successive different control frequencies for the supply circuit for successive ignition commands on reception of a request and to determine an optimum control frequency based on received measured signals.Type: ApplicationFiled: February 12, 2008Publication date: May 13, 2010Applicant: RENAULT s.a.sInventors: Andre Agneray, Julien Couillaud, Xavier Jaffrezic