Patents by Inventor Cheikh Diouf
Cheikh Diouf 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: 11604230Abstract: An electric circuit for driving a current through a load resistance in a first state and isolating the load resistance in a second state includes: a first switch configured to connect a first terminal of the load resistance and a first port of the electric circuit, the first switch having a first electric potential; a second switch configured to connect a second terminal of the load resistance and a second port of the electric circuit, the second switch having a second electric potential, different from the first electric potential; and at least one auxiliary resistance included within a bypass line configured to bypass the load resistance and the second switch. The first switch is configured to switch a current flowing through the first switch, and the second switch is configured to switch a current flowing through the second switch.Type: GrantFiled: June 12, 2019Date of Patent: March 14, 2023Assignee: VITESCO TECHNOLOGIES GMBHInventors: Finn Frederiksen, Peter Bauer, Georges Maguin, Denis Mesmer, Cheikh Diouf
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Patent number: 11421574Abstract: Disclosed is a device for injecting ammonia in gaseous form into an exhaust line of a combustion engine, the device including a supervisor, an evaporation chamber incorporating a heater for heating a quantity of reducing agent thus releasing ammonia in gaseous form that exits the evaporation chamber via a pipe opening into the exhaust line. The control supervisor is associated with an internal first pressure sensor housed in the evaporation chamber and with a second pressure sensor intended to be housed in the exhaust line, including a calculator calculating a quantity of ammonia to be injected into the exhaust line at a given instant as a function of the pressure values from the first and second pressure sensors.Type: GrantFiled: February 4, 2020Date of Patent: August 23, 2022Assignee: VITESCO TECHNOLOGIES GMBHInventors: Cheikh Diouf, Mathieu Dupriez, Charles-Albert Fischbach
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Patent number: 11365664Abstract: A method for controlling a return valve of an exhaust system and to an exhaust system with a control unit which is configured to carry out the method. The method is based on the object of avoiding an overpressure in the line system for urea solution as a result of a reduction in the injection rate. The method includes the steps of determining whether one or more of the following states are present during the operation of the exhaust system: a) an injection rate per unit of time of urea solution of the dosing valve is less than or equal to a predefined injection limit, b) a pressure measured by the pressure sensor in the line system overshoots a predefined first upper pressure limit (P2). The return valve is opened for a first predefined opening duration (?t1) if states a) and b) are present and at least one of the states has already been present for at least a predefined period of time (?ta). The return valve is closed after the first predefined opening duration (?t1) has elapsed.Type: GrantFiled: April 9, 2021Date of Patent: June 21, 2022Assignee: Vitesco Technologies GmBHInventors: Peter Bauer, Michael Hamann, Cheikh Diouf, Romain Jacques
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Publication number: 20220106895Abstract: Disclosed is a device for injecting ammonia in gaseous form into an exhaust line of a combustion engine, the device including a supervisor, an evaporation chamber incorporating a heater for heating a quantity of reducing agent thus releasing ammonia in gaseous form that exits the evaporation chamber via a pipe opening into the exhaust line. The control supervisor is associated with an internal first pressure sensor housed in the evaporation chamber and with a second pressure sensor intended to be housed in the exhaust line, including a calculator calculating a quantity of ammonia to be injected into the exhaust line at a given instant as a function of the pressure values from the first and second pressure sensors.Type: ApplicationFiled: February 4, 2020Publication date: April 7, 2022Inventors: Cheikh DIOUF, Mathieu DUPRIEZ, Charles-Albert FISCHBACH
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Publication number: 20210356532Abstract: An electric circuit for driving a current through a load resistance in a first state and isolating the load resistance in a second state includes: a first switch configured to connect a first terminal of the load resistance and a first port of the electric circuit, the first switch having a first electric potential; a second switch configured to connect a second terminal of the load resistance and a second port of the electric circuit, the second switch having a second electric potential, different from the first electric potential; and at least one auxiliary resistance included within a bypass line configured to bypass the load resistance and the second switch. The first switch is configured to switch a current flowing through the first switch, and the second switch is configured to switch a current flowing through the second switch.Type: ApplicationFiled: June 12, 2019Publication date: November 18, 2021Inventors: Finn FREDERIKSEN, Peter BAUER, Georges MAGUIN, Denis MESMER, Cheikh DIOUF
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Publication number: 20210291085Abstract: A method is disclosed for maintaining a filtration device of a system for extracting a liquid from a tank of a motor vehicle. The method is based on risk criteria for detecting (301) the choking of the device and on application criteria for identifying (302) a context favorable to the cleaning of the filtration device. The cleaning of the filtration device, based on generating (303) a reverse stream in the extraction system, is thus only triggered when specific, configurable conditions are identified.Type: ApplicationFiled: March 17, 2021Publication date: September 23, 2021Inventors: Charles-Albert FISCHBACH, Cheikh DIOUF
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Publication number: 20210222598Abstract: A method for controlling a return valve of an exhaust system and to an exhaust system with a control unit which is configured to carry out the method. The method is based on the object of avoiding an overpressure in the line system for urea solution as a result of a reduction in the injection rate. The method includes the steps of determining whether one or more of the following states are present during the operation of the exhaust system: a) an injection rate per unit of time of urea solution of the dosing valve is less than or equal to a predefined injection limit, b) a pressure measured by the pressure sensor in the line system overshoots a predefined first upper pressure limit (P2). The return valve is opened for a first predefined opening duration (?t1) if states a) and b) are present and at least one of the states has already been present for at least a predefined period of time (?ta). The return valve is closed after the first predefined opening duration (?t1) has elapsed.Type: ApplicationFiled: April 9, 2021Publication date: July 22, 2021Applicant: Vitesco Technologies GMBHInventors: Peter Bauer, Michael Hamann, Cheikh Diouf, Romain Jacques
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Patent number: 10386221Abstract: The disclosure relates to a method for determining a level of a liquid in a tank with an ultrasonic fill state sensor and at least two reference surfaces for reflecting an ultrasonic wave transmitted by the ultrasonic fill state sensor. A first reference surface is arranged below a second reference surface. The method includes determining a first propagation speed of an ultrasonic wave to the first reference surface on a first measurement path and a second propagation speed from the first reference surface to the second reference surface on a second measurement path. The method also includes measuring a propagation time of an ultrasonic wave from the ultrasonic fill state sensor to a liquid level of the liquid in the tank, selecting the first propagation speed or the second propagation speed based on at least one selection criterion, and calculating a fill state using the propagation time measured.Type: GrantFiled: January 13, 2017Date of Patent: August 20, 2019Assignee: Continental Automotive GmbHInventors: Sonny Borsoi, Cheikh Diouf, Mathieu Dupriez, Denis Mesmer
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Patent number: 10267195Abstract: The invention relates to a conveyor unit for conveying a liquid, comprising a distributor block made of plastic for the liquid-conducting connection of at least one component for conveying the liquid, the distributor block comprising at least one metallic clamping element which encloses the distributor block at least in some regions on the outside.Type: GrantFiled: April 25, 2017Date of Patent: April 23, 2019Assignee: Continental Automotive GmbHInventors: Cheikh Diouf, Georges Maguin, Philippe Mertes, Frèdèric Supernat
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Patent number: 9897477Abstract: A delivery unit for extracting liquid additive from a tank can be mounted on the tank and includes a fill level sensor for measuring the fill level of liquid additive in the tank. The fill level sensor is set up to emit waves into an emission region of the tank, and the fill level can be measured by using a propagation time measurement of the waves reflected by a liquid surface and striking the fill level sensor again. At least one first reference surface extends at least partially into the emission region and is at a first distance from the fill level sensor. The at least one first reference surface is disposed on a separate calibration component mounted on an outer side of a housing of the delivery unit. A tank for storing liquid additive, a motor vehicle and a method for monitoring a fill level are also provided.Type: GrantFiled: September 16, 2014Date of Patent: February 20, 2018Assignee: EMITEC Gesellschaft fuer Emissionstechnologie mbHInventors: Georges Maguin, Cheikh Diouf, Sven Schepers, Jan Hodgson
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Patent number: 9784158Abstract: A device for providing a liquid additive includes an assembly main body on which at least one hydraulic component is mounted for the operation of the device. A plug-in plate is fastened to the assembly main body and at least one electric heater and at least one further electrical component for the operation of the device are mounted on the plug-in plate. The at least one electric heater extends from the plug-in plate into at least one cutout of the assembly main body. A motor vehicle having the device is also provided.Type: GrantFiled: October 10, 2013Date of Patent: October 10, 2017Assignee: Continental Automotive GmbHInventors: Georges Maguin, Philippe Mertes, Cheikh Diouf, Finn Frederiksen, Sven Schepers, Jan Hodgson
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Publication number: 20170226912Abstract: The invention relates to a conveyor unit for conveying a liquid, comprising a distributor block made of plastic for the liquid-conducting connection of at least one component for conveying the liquid, the distributor block comprising at least one metallic clamping element which encloses the distributor block at least in some regions on the outside.Type: ApplicationFiled: April 25, 2017Publication date: August 10, 2017Applicant: CONTINENTAL AUTOMOTIVE GMBHInventors: Cheikh Diouf, Georges Maguin, Philippe Mertes, Frèdèric Supernat
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Publication number: 20170159523Abstract: The invention relates to a heater for a device for providing a liquid additive in a motor vehicle, comprising at least one switchable resistance heating element, which is connected in series with at least one switch element, by means of which the at least one resistance heating element can be activated and deactivated, and comprising at least one permanent resistance heating element, which is connected in parallel with the at least one switchable resistance heating element and the at least one switch element.Type: ApplicationFiled: May 27, 2015Publication date: June 8, 2017Applicant: CONTINENTAL AUTOMOTIVE GMBHInventors: Sonny BORSOI, Georges MAGUIN, Cheikh DIOUF
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Publication number: 20170122789Abstract: The disclosure relates to a method for determining a level of a liquid in a tank with an ultrasonic fill state sensor and at least two reference surfaces for reflecting an ultrasonic wave transmitted by the ultrasonic fill state sensor. A first reference surface is arranged below a second reference surface. The method includes determining a first propagation speed of an ultrasonic wave to the first reference surface on a first measurement path and a second propagation speed from the first reference surface to the second reference surface on a second measurement path. The method also includes measuring a propagation time of an ultrasonic wave from the ultrasonic fill state sensor to a liquid level of the liquid in the tank, selecting the first propagation speed or the second propagation speed based on at least one selection criterion, and calculating a fill state using the propagation time measured.Type: ApplicationFiled: January 13, 2017Publication date: May 4, 2017Applicant: CONTINENTAL AUTOMOTIVE GMBHInventors: Sonny Borsoi, Cheikh Diouf, Mathieu Dupriez, Denis Mesmer
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Patent number: 9624810Abstract: A delivery unit for delivering a liquid additive in a motor vehicle, includes at least one temperature sensor for contactlessly measuring a temperature at least at one measurement point in the delivery unit. The temperature sensor and the measurement point have a spacing therebetween and a radiation channel which is free from fixtures is provided between the temperature sensor and the measurement point. A method for checking the operating state of a delivery unit and a motor vehicle having a delivery unit are also provided.Type: GrantFiled: September 29, 2014Date of Patent: April 18, 2017Assignee: EMITEC Gesellschaft fuer Emissionstechnologie mbHInventors: Finn Frederiksen, Georges Maguin, Cheikh Diouf, Sven Schepers, Jan Hodgson
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Patent number: 9587544Abstract: A device for delivering a liquid additive includes: a tank configured to store the liquid additive; a pump; a suction point at which the liquid additive can be sucked out of the tank by the pump; and a filter at least partially delimiting an intermediate space between the filter and the suction point and separating the intermediate space from an interior space of the tank. The filter has a filter surface with a top edge and a bottom edge, the top edge and the bottom edge being spaced apart from one another in a vertical direction by 30 mm to 80 mm and the suction point being positioned at most 5 mm below the top edge in the vertical direction.Type: GrantFiled: February 25, 2014Date of Patent: March 7, 2017Assignee: Continental Automotive GmbHInventors: Georges Maguin, Cheikh Diouf, Jan Hodgson
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Patent number: 9562457Abstract: A device for delivering a liquid additive includes an additive delivery unit and an electronic unit. The additive delivery unit has at least one hydraulic component for delivering the liquid additive. All electrical connections of the at least one hydraulic component are brought together in a first plug connector on the additive delivery unit. The electronic unit has a second plug connector which can be connected to the first plug connector. The first plug connector and the second plug connector are connected to one another and form a plug connection when the electronic unit and the additive delivery unit are connected to one another. A motor vehicle having the device is also provided.Type: GrantFiled: March 6, 2015Date of Patent: February 7, 2017Assignee: EMITEC Gesellschaft fuer Emissionstechnologie mbHInventors: Georges Maguin, Cheikh Diouf, Finn Frederiksen, Sven Schepers, Jan Hodgson
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Publication number: 20160010530Abstract: A device for delivering a liquid additive includes: a tank configured to store the liquid additive; a pump; a suction point at which the liquid additive can be sucked out of the tank by the pump; and a filter at least partially delimiting an intermediate space between the filter and the suction point and separating the intermediate space from an interior space of the tank. The filter has a filter surface with a top edge and a bottom edge, the top edge and the bottom edge being spaced apart from one another in a vertical direction by 30 mm to 80 mm and the suction point being positioned at most 5 mm below the top edge in the vertical direction.Type: ApplicationFiled: February 25, 2014Publication date: January 14, 2016Inventors: Georges MAGUIN, Cheikh DIOUF, Jan HODGSON
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Publication number: 20150292382Abstract: A device for providing a liquid additive includes an assembly main body on which at least one hydraulic component is mounted for the operation of the device. A plug-in plate is fastened to the assembly main body and at least one electric heater and at least one further electrical component for the operation of the device are mounted on the plug-in plate. The at least one electric heater extends from the plug-in plate into at least one cutout of the assembly main body. A motor vehicle having the device is also provided.Type: ApplicationFiled: October 10, 2013Publication date: October 15, 2015Inventors: Georges Maguin, Philippe Mertes, Cheikh Diouf, Finn Frederiksen, Sven Schepers, Jan Hodgson
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Patent number: 9121318Abstract: A delivery unit for delivering a liquid additive from a tank into an exhaust gas treatment device includes at least a housing which can be mounted on the tank, and a component carrier which carries at least one pump and is fixed in the housing by a clamping plate. A motor vehicle having a delivery unit is also provided.Type: GrantFiled: May 16, 2014Date of Patent: September 1, 2015Assignee: EMITEC Gesellschaft fuer Emissionstechnologie mbHInventors: Georges Maguin, Cheikh Diouf, Sven Schepers, Jan Hodgson