Patents by Inventor Thierry Cochet
Thierry Cochet 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: 10345286Abstract: A method of determining the cetane number of a fuel in an internal combustion engine comprising, during running of the engine, i) with respect to one cylinder, performing a routine including a series of injections such that for each injection a quantity of fuel is injected into the cylinder, and during the routine varying the angle at which the injections takes place with respect to crankshaft angle; ii) measuring engine speed at intervals during the series of injections and determining values for changes in engine speed consequent to the injections; iii) determining cetane number from a pre-stored relationship relating the cetane number to changes in engine speed consequent to changes in the test injection angle.Type: GrantFiled: September 29, 2015Date of Patent: July 9, 2019Assignee: DELPHI TECHNOLOGIES IP LIMITEDInventors: Thierry Cochet, Jean-Michel Bacq
-
Patent number: 10100794Abstract: A fuel injector for an internal combustion engine includes an injector body in which there are positioned an actuator, a control valve, and a needle guide. The actuator actuates the control valve, the control valve controlling an injection needle sliding the needle guide between an open position in which injection is permitted and a closed position in which the injection of fuel is prevented. The injector additionally includes a first electrical connection extending from the needle guide to a metal that are internal to the injector, and a metal extension extending from the metal ring to a connector pin accessible from the outside of the injector, so that an electrical signal indicative of the position of the needle can be transmitted from the needle guide for the needle to the connector pin.Type: GrantFiled: June 5, 2015Date of Patent: October 16, 2018Assignee: DELPHI TECHNOLOGIES IP LIMITEDInventors: Philippe Barbier, Thierry Cochet
-
Publication number: 20170299568Abstract: A method of determining the cetane number of a fuel in an internal combustion engine comprising, during running of the engine, i) with respect to one cylinder, performing a routine including a series of injections such that for each injection a quantity of fuel is injected into the cylinder, and during the routine varying the angle at which the injections takes place with respect to crankshaft angle; ii) measuring engine speed at intervals during the series of injections and determining values for changes in engine speed consequent to the injections; iii) determining cetane number from a pre-stored relationship relating the cetane number to changes in engine speed consequent to changes in the test injection angle.Type: ApplicationFiled: September 29, 2015Publication date: October 19, 2017Inventors: Thierry Cochet, Jean-Michel Bacq
-
Patent number: 9726126Abstract: A fuel injector includes fixed metal components, in particular an injector body, a solenoid actuator equipped with a retaining spring that holds a control valve stem, a control valve body including a seat for the control valve stem, a spacer between the body of the control valve and an injection nozzle, a control chamber, and an injection needle seat. The fuel injector also includes movable metal components, in particular the control valve stem and an armature thereof and an injection needle. Surfaces of the metal components that are in contact with one another are contact surfaces. Resistive surface coatings are arranged on a number of the contact surfaces. The overall electrical resistivity of the injector between the body of the solenoid actuator and the body of the injector varies by at least three distinct ohm values intermittently according to the kinetics of the injection needle of the injector.Type: GrantFiled: November 4, 2014Date of Patent: August 8, 2017Assignee: Delphi International Operations LuxembourgInventors: Christophe Moreau, Thierry Thibault, Thierry Cochet, Jean Luc Beduneau, Philippe Legrand
-
Publication number: 20170211533Abstract: A fuel injector for an internal combustion engine includes an injector body in which there are positioned an actuator, a control valve, and a needle guide. The actuator actuates the control valve, the control valve controlling an injection needle sliding the needle guide between an open position in which injection is permitted and a closed position in which the injection of fuel is prevented. The injector additionally includes a first electrical connection extending from the needle guide to a metal that are internal to the injector, and a metal extension extending from the metal ring to a connector pin accessible from the outside of the injector, so that an electrical signal indicative of the position of the needle can be transmitted from the needle guide for the needle to the connector pin.Type: ApplicationFiled: June 5, 2015Publication date: July 27, 2017Inventors: Philippe Barbier, Thierry Cochet
-
Publication number: 20160281665Abstract: A fuel injector includes fixed metal components, in particular an injector body, a solenoid actuator equipped with a retaining spring that holds a control valve stem, a control valve body including a seat for the control valve stem, a spacer between the body of the control valve and an injection nozzle, a control chamber, and an injection needle seat. The fuel injector also includes movable metal components, in particular the control valve stem and an armature thereof and an injection needle. Surfaces of the metal components that are in contact with one another are contact surfaces. Resistive surface coatings are arranged on a number of the contact surfaces. The overall electrical resistivity of the injector between the body of the solenoid actuator and the body of the injector varies by at least three distinct ohm values intermittently according to the kinetics of the injection needle of the injector.Type: ApplicationFiled: November 4, 2014Publication date: September 29, 2016Inventors: CHRISTOPHE MOREAU, THIERRY THIBAULT, THIERRY COCHET, JEAN LUC BEDUNEAU, PHILIPPE LEGRAND
-
Patent number: 7269500Abstract: A process for determining the operating parameters of an injection device of a combustion engine includes the steps of: (a) selecting an injector to test; (b) calculating a mean velocity associated with a preceding injector arranged before the injector to test; c) applying to the injector to test an injection control signal including at least one test pulse having an adjustable parameter; (d) calculating a mean velocity associated with the injector to test; (e) calculating a difference between the mean velocity calculated in step d) and the mean velocity calculated in step b); (f) repeating steps b) to d) for at least another engine cycle, each time varying the parameter of the test pulse; (g) determining a value of the parameter of the test pulse for which the mean velocity difference exceeds a predetermined threshold; and storing the parameter value.Type: GrantFiled: March 24, 2006Date of Patent: September 11, 2007Assignee: Delphi Technologies, Inc.Inventors: Thierry Cochet, Guillaume Meissonnier
-
Publication number: 20060224299Abstract: A process for determining the operating parameters of an injection device of a combustion engine includes the steps of: (a) selecting an injector to test; (b) calculating a mean velocity associated with a preceding injector arranged before the injector to test; c) applying to the injector to test an injection control signal including at least one test pulse having an adjustable parameter; (d) calculating a mean velocity associated with the injector to test; (e) calculating a difference between the mean velocity calculated in step d) and the mean velocity calculated in step b); (f) repeating steps b) to d) for at least another engine cycle, each time varying the parameter of the test pulse; (g) determining a value of the parameter of the test pulse for which the mean velocity difference exceeds a predetermined threshold; and storing the parameter value.Type: ApplicationFiled: March 24, 2006Publication date: October 5, 2006Inventors: Thierry Cochet, Guillaume Meissonnier