Patents by Inventor Jean-Marc Zaccardi
Jean-Marc Zaccardi 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: 10724427Abstract: Control of a quantity of air introduced into an intake of a supercharged internal combustion engine which includes a proportional valve located in a partial transfer duct which controls flow of compressed air flow through the partial transfer duct into an inlet of a turbine. The proportional valve is controlled to move between open and closed positions in accordance with strategies in accordance with stabilized phases of operation of the engine. Characteristics of stabilized phases of operation of the engine are determined and are used to control circulation of the compressed air during transitions between the stabilized phases of engine operation in accordance with the determined characteristics of the stabilized phases of the engine operation. The determined characteristics are derived from a previously completed mapping of speed and charging of the supercharged engine during a previous stabilized phase.Type: GrantFiled: April 10, 2017Date of Patent: July 28, 2020Assignee: IFP Energies nouvellesInventors: Thierry Colliou, Jean-Marc Zaccardi, Olivier Baudrand
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Patent number: 10619559Abstract: The present invention controls the amount of air fed to the intake of a supercharged internal-combustion engine. The engine includes two exhaust gas outlets (32, 36) each connected to an exhaust manifold (30, 34) of a group of at least one cylinder (121, 122, 123, 124), a turbocharger with a dual-inlet (46, 48) turbine (40) connected to the exhaust gas outlets, and to an outside air compressor (44), and a duct (64) for partial transfer of the compressed air from the compressor to the turbine inlets. Two branches (70, 72) of the partial transfer duct, are connected to the turbine inlets. Each branch carries proportional throttle (74, 76), and the compressed air circulation in the branches is controlled during transient operation phases according to strategies applied to the proportioned throttle valves and determined in accordance with the stabilized phase characteristics.Type: GrantFiled: April 12, 2016Date of Patent: April 14, 2020Assignee: IFP ENERGIES NOUVELLESInventors: Olivier Baudrand, Thierry Colliou, Jean-Marc Zaccardi
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Publication number: 20190128174Abstract: Method for controlling the quantity of air introduced to the intake of a supercharged internal combustion engine, said engine comprising an exhaust gas outlet (32) connected to an exhaust collector (30), comprising a supercharging device (38) comprising a turbocompressor with a turbine (40) having a single inlet (46) connected to said exhaust gas outlet, and an external air compressor (44), and a duct (64) for the partial transfer of the compressed air from the compressor to the inlet of the turbine. According to the invention, a branch (70) is provided on said partial transfer duct, said branch being connected to the inlet of the turbine and comprising a proportional valve means (74), and in that the flow of the compressed air in this branch is controlled during transitory operating phases in accordance with strategies that are applied to said valve means and are determined according to characteristics of the stabilized phases.Type: ApplicationFiled: April 10, 2017Publication date: May 2, 2019Inventors: Thierry COLLIOU, Jean-Marc ZACCARDI, Olivier BAUDRAND
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Publication number: 20190040789Abstract: A variable-compression ratio direct-injection internal-combustion engine comprising at least a cylinder (10), a cylinder head (12) carrying a fuel injection means (14) spraying fuel in a single sheet (34) of fuel jets (36), a piston (16) sliding in this cylinder, and a combustion chamber (32) delimited on one side by upper face (42) of the piston comprising a projection (46) rising up towards the cylinder head and arranged in the cent of a concave bowl (44). According to the invention, the combustion chamber comprises at least two mixing zones (Z1, Z2) into which fuel jets (36) are injected, one (Z1) of the zones being used for a maximum compression ratio (Tmax) and the other (Z2) zone being used for a minimum compression ratio (Tmini).Type: ApplicationFiled: January 9, 2017Publication date: February 7, 2019Inventors: Gaetano DE PAOLA, Jean-Marc ZACCARDI, Philippe DEGEILH, Stephane CHEVILLARD
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Publication number: 20180149075Abstract: The present invention relates to a method of controlling the amount of air fed to the intake of a supercharged internal-combustion engine, said engine comprising two exhaust gas outlets (32, 36) connected each to an exhaust manifold (30, 34) of a group of at least one cylinder (121, 122, 123, 124), comprising a supercharging device (38) including a turbocharger with a dual-inlet (46, 48) turbine (40) connected to said exhaust gas outlets, as well as an outside air compressor (44), and a duct (64) for partial transfer of the compressed air from the compressor to the turbine inlets. According to the method, two branches (70, 72) are provided on said partial transfer duct, said branches being connected to the turbine inlets and carrying each proportional throttling means (74, 76), and the compressed air circulation in the branches is controlled during transient operation phases according to strategies applied to said throttling means and determined in accordance with the stabilized phase characteristics.Type: ApplicationFiled: April 12, 2016Publication date: May 31, 2018Applicant: IFP ENERGIES NOUVELLESInventors: Olivier BAUDRAND, Thierry COLLIOU, Jean-Marc ZACCARDI
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Patent number: 8677975Abstract: A method for detection of abnormal combustion for internal combustion engines is disclosed. A physical model is chosen that describes, as a function of the angle ? of rotation of the engine crankshaft, the development of pressure in the cylinder during combustion without any pre-ignition phenomenon. The cylinder pressure Pe(?) is estimated using this model and the intake pressure is measured. The beginning of abnormal combustion is detected by comparing a first value of a variable calculated using the measurement of the cylinder pressure, to a second value of the variable calculated using the estimation of the cylinder pressure. The amplitude of the pre-ignition is determined by repeating these steps for a defined number of crankshaft angles. Then the progress of the abnormal combustion detected in the combustion chamber is controlled as a function of the amplitude of the pre-ignition phenomenon.Type: GrantFiled: September 18, 2009Date of Patent: March 25, 2014Assignee: IFPInventors: Dominique Auclair, Laurent Duval, Alexandre Pagot, Jean-Marc Zaccardi
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Patent number: 8499623Abstract: An abnormal combustion detection method for spark-ignition internal-combustion engines, from combustion indicator distribution modelling is disclosed. At least one combustion indicator such as CA10 is determined. The distribution of N values of this indicator, acquired over N cycles preceding the cycle in progress, is modelled by determining coefficients of a theoretical distribution law. Modelling is repeated by removing extreme values from among the N values or for various working points of the engine, to obtain an evolution of the coefficients. At least one parameter characterizing evolution of at least one of these coefficients is determined. The start of an abnormal combustion is detected by comparing the parameter with a predetermined threshold, and the course of the abnormal combustion detected in the combustion chamber is controlled.Type: GrantFiled: November 2, 2010Date of Patent: August 6, 2013Assignee: IFP Energies NouvellesInventors: Laurent Duval, Alexandre Pagot, Benoist Thirouard, Jean-Marc Zaccardi
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Patent number: 8359909Abstract: An abnormal combustion detection method is disclosed for spark-ignition internal-combustion engines, from combustion indicators. Combustion indicators, such as CA10 and MIP, are determined which are converted to new indicators having lower dispersions than those of indicators for normal combustions that are not converted. A parameter characterizing a distribution of N values of the new combustion indicators, acquired over N cycles preceding the cycle in progress, is then determined. The start of an abnormal combustion is thereafter detected by comparing this parameter with a threshold, and the course of the abnormal combustion detected in the combustion chamber is controlled.Type: GrantFiled: November 2, 2010Date of Patent: January 29, 2013Assignee: IFP Energies NouvellesInventors: Laurent Duval, Alexandre Pagot, Benoist Thirouard, Jean-Marc Zaccardi
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Publication number: 20130024087Abstract: An abnormal combustion detection and characterization method for spark-ignition internal-combustion engines using combustion indicators is disclosed. A multidimensional space having each dimension corresponding to one of the indicators is defined and a closed surface is defined in this space to surround points corresponding to normal combustions and to not surround points corresponding to abnormal combustions. For each combustion of an engine cycle, the combustion of the cycle is represented by a point in this multidimensional space, the position of this point with respect to the surface is determined and the abnormal nature of the combustion is deduced therefrom.Type: ApplicationFiled: July 12, 2012Publication date: January 24, 2013Inventors: Laurent Duval, Aurelien Schutz, Jean-Marc Zaccardi
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Patent number: 8210152Abstract: The present invention relates to a method of controlling the combustion of a spark-ignition internal-combustion engine, in particular a supercharged engine, wherein the engine comprises at least one cylinder (12) with a combustion chamber (14), intake means (16), exhaust means (22) and fuel supply means (44) allowing a fuel mixture to be achieved in said combustion chamber. According to the invention, the method consists in: establishing, between a slow engine speed (Rf) and a low engine speed (Rb), a curve (C2) of the limit values (P2) of the load of cylinder (12) above which pre-ignition of the fuel mixture is favored, evaluating the effective cylinder load, heterogenizing, between the slow engine speed (Rf) and the low engine speed (Rb), the fuel mixture when the evaluated load value is close to the limit value (P2) established.Type: GrantFiled: September 18, 2009Date of Patent: July 3, 2012Assignee: IFPInventors: Alexandre Pagot, Jean-Marc Zaccardi
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Patent number: 8068972Abstract: The invention is an abnormal combustion detection method for spark-ignition internal-combustion engines. For each engine cycle, a parameter characterizing a distribution of N combustion indicator values, CA10 for example, acquired over N cycles preceding the cycle in progress, is determined while ignoring extreme values. A threshold is defined from this parameter for the combustion indicator. The start of an abnormal combustion is then detected by comparing the combustion indicator with this threshold and the course of the abnormal combustion detected in the combustion chamber is controlled.Type: GrantFiled: September 28, 2009Date of Patent: November 29, 2011Assignee: IFPInventors: Dominique Auclair, Laurent Duval, Alexandre Pagot, Benoist Thirouard, Jean-Marc Zaccardi
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Publication number: 20110113869Abstract: An abnormal combustion detection method is disclosed for spark-ignition internal-combustion engines, from combustion indicators. Combustion indicators, such as CA10 and MIP, are determined which are converted to new indicators having lower dispersions than those of indicators for normal combustions that are not converted. A parameter characterizing a distribution of N values of the new combustion indicators, acquired over N cycles preceding the cycle in progress, is then determined. The start of an abnormal combustion is thereafter detected by comparing this parameter with a threshold, and the course of the abnormal combustion detected in the combustion chamber is controlled.Type: ApplicationFiled: November 2, 2010Publication date: May 19, 2011Inventors: Laurent DUVAL, Alexandre Pagot, Benoist Thirouard, Jean-Marc Zaccardi
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Publication number: 20110118953Abstract: An abnormal combustion detection method for spark-ignition internal-combustion engines, from combustion indicator distribution modelling is disclosed. At least one combustion indicator such as CA10 is determined. The distribution of N values of this indicator, acquired over N cycles preceding the cycle in progress, is modelled by determining coefficients of a theoretical distribution law. Modelling is repeated by removing extreme values from among the N values or for various working points of the engine, to obtain an evolution of the coefficients. At least one parameter characterizing evolution of at least one of these coefficients is determined. The start of an abnormal combustion is detected by comparing the parameter with a predetermined threshold, and the course of the abnormal combustion detected in the combustion chamber is controlled.Type: ApplicationFiled: November 2, 2010Publication date: May 19, 2011Inventors: Laurent DUVAL, Alexandre PAGOT, Benoist THIROUARD, Jean-Marc ZACCARDI
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Publication number: 20110067672Abstract: The present invention relates to a method of controlling the combustion of a spark-ignition internal-combustion engine, in particular a supercharged engine, wherein the engine comprises at least one cylinder (12) with a combustion chamber (14), intake means (16), exhaust means (22) and fuel supply means (44) allowing a fuel mixture to be achieved in said combustion chamber. According to the invention, the method consists in: establishing, between a slow engine speed (Rf) and a low engine speed (Rb), a curve (C2) of the limit values (P2) of the load of cylinder (12) above which pre-ignition of the fuel mixture is favoured, evaluating the effective cylinder load, heterogenizing, between the slow engine speed (Rf) and the low engine speed (Rb), the fuel mixture when the evaluated load value is close to the limit value (P2) established.Type: ApplicationFiled: September 18, 2009Publication date: March 24, 2011Inventors: Alexandre PAGOT, Jean-Marc ZACCARDI
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Publication number: 20100094528Abstract: The invention is an abnormal combustion detection method for spark-ignition internal-combustion engines. For each engine cycle, a parameter characterizing a distribution of N combustion indicator values, CA10 for example, acquired over N cycles preceding the cycle in progress, is determined while ignoring extreme values. A threshold is defined from this parameter for the combustion indicator. The start of an abnormal combustion is then detected by comparing the combustion indicator with this threshold and the course of the abnormal combustion detected in the combustion chamber is controlled.Type: ApplicationFiled: September 28, 2009Publication date: April 15, 2010Inventors: Dominique AUCLAIR, Laurent Duval, Alexandre Pagot, Benoist Thirouard, Jean-Marc Zaccardi
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Publication number: 20100077992Abstract: A method for detection of abnormal combustion for internal combustion engines is disclosed. A physical model is chosen that describes, as a function of the angle a of rotation of the engine crankshaft, the development of pressure in the cylinder during combustion without any pre-ignition phenomenon. The cylinder pressure Pe(?) is estimated using this model and the intake pressure is measured. The beginning of abnormal combustion is detected by comparing a first value of a variable calculated using the measurement of the cylinder pressure, to a second value of the variable calculated using the estimation of the cylinder pressure. The amplitude of the pre-ignition is determined by repeating these steps for a defined number of crankshaft angles. Then the progress of the abnormal combustion detected in the combustion chamber is controlled as a function of the amplitude of the pre-ignition phenomenon.Type: ApplicationFiled: September 18, 2009Publication date: April 1, 2010Inventors: Dominique AUCLAIR, Laurent DUVAL, Alexandre PAGOT, Jean-Marc ZACCARDI
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Patent number: 7461633Abstract: Method of controlling the combustion of an internal-combustion engine, in particular a direct-injection supercharged engine, notably of gasoline type, wherein the engine comprises at least one cylinder (12) with a combustion chamber (14) within which a compression stage takes place, followed by a stage of combustion of a fuel mixture by a spark-ignition means (34), characterized in that it consists in measuring a quantity related to at least one parameter representative of the state of the fuel mixture during said stages; in determining a value that depends on the amplitude of the measured quantity; in comparing the determined value with at least one threshold value representative of the quantity related to said parameter representative of the conventional state of the fuel mixture during said stages; in detecting the start of an abnormal combustion when the determined value exceeds said threshold value and when the ignition means is not actuated; in controlling the course of the abnormal combustion detectedType: GrantFiled: February 27, 2007Date of Patent: December 9, 2008Assignee: IFPInventors: Franck Vangraefschepe, Jean-Marc Zaccardi
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Publication number: 20080035129Abstract: Method of controlling the combustion of an internal-combustion engine, in particular a direct-injection supercharged engine, notably of gasoline type, wherein the engine comprises at least one cylinder (12) with a combustion chamber (14) within which a compression stage takes place, followed by a stage of combustion of a fuel mixture by a spark-ignition means (34), characterized in that it consists in measuring a quantity related to at least one parameter representative of the state of the fuel mixture during said stages; in determining a value that depends on the amplitude of the measured quantity; in comparing the determined value with at least one threshold value representative of the quantity related to said parameter representative of the conventional state of the fuel mixture during said stages; in detecting the start of an abnormal combustion when the determined value exceeds said threshold value and when the ignition means is not actuated; in controlling the course of the abnormal combustion detectedType: ApplicationFiled: February 27, 2007Publication date: February 14, 2008Inventors: Franck Vangraefschepe, Jean-Marc Zaccardi