Patents by Inventor Mohamed Yahia

Mohamed Yahia 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: 10215450
    Abstract: The invention relates to heating, ventilation and/or air-conditioning equipment (1) including a device (9) for controlling the temperature of a battery (7) of an automobile including at least a compressor (11), a condenser (13), a first expansion member (15), a thermal-conditioning exchanger (17) for exchanging heat between a coolant and a heat-transport fluid (FC), and switching means. The temperature control device (9) includes at least one bypass line (9b) connecting an outlet of the compressor (11) to an inlet of the thermal-conditioning exchanger (17) while bypassing the condenser (13). The invention also relates to a method for controlling the temperature of an automobile battery (7) implemented by means of such heating, ventilation and/or air-conditioning equipment (1).
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: February 26, 2019
    Assignee: VALEO SYSTEMES THERMIQUES
    Inventors: Pascal Guigou, Mohamed Yahia
  • Patent number: 9897366
    Abstract: The invention relates to a device (1) for controlling the flow of a coolant in a circuit (20) and capable of being exposed to a flow (26) of outside air at the front surface of a vehicle (21), including a means for controlling the flow of coolant, at least one opening of which is placed under the control of a thermostatic detection means, characterized in that the thermostatic detection means includes a thermally conductive surface (9) exposed to said flow (26) of outside air. The invention also relates to the coolant circuit (20) including said control device (1), and to a vehicle (21) provided with such a circuit. The invention can be used for motor vehicles.
    Type: Grant
    Filed: August 9, 2012
    Date of Patent: February 20, 2018
    Assignee: VALEO SYSTEMES THERMIQUES
    Inventor: Mohamed Yahia
  • Patent number: 9821626
    Abstract: A heating, ventilation and/or air-conditioning apparatus (1) for the passenger compartment of a motor vehicle includes a housing (2) comprising a first air inlet (3) and a second air inlet (4). The housing (2) directs an inner air flow (Fi) from the first air inlet (3) and/or the second air inlet (4) and contains at least a first heat exchanger (5). The housing (2) includes: an air flow channel (24) directing the inner air flow (Fi) in the housing (2) while bypassing the first heat exchanger (5); and an air inlet duct (23) directing the inner air flow (Fi) in the housing (2) through the first heat exchanger (5). A heating, ventilation and/or air-conditioning installation for the passenger compartment of a motor vehicle includes: an air conditioning loop through which a coolant flows. The loop includes at least one compressor, a first expansion member, an outer heat exchanger and the first heat exchanger (5). The installation also includes the heating, ventilation and/or air-conditioning apparatus (1).
    Type: Grant
    Filed: May 4, 2012
    Date of Patent: November 21, 2017
    Assignee: VALEO SYSTEMES THERMIQUES
    Inventors: Klaus Wittmann, Mohamed Yahia
  • Patent number: 9683764
    Abstract: Evaporator, notably for motor vehicle air-conditioning circuit. According to the invention, the evaporator (1), which comprises three layers—upstream (2), intermediate (3) and downstream (4)—through which there flows a coolant that enters the evaporator (1) via the intermediate layer (3) and leaves the evaporator via the upstream layer (2) to cool an air flow (A) passing in succession across said upstream (2), intermediate (3) and downstream (4) layers, comprises means (5E) for inducing a pressure drop between the outlet of the intermediate layer (3) and the inlet of the downstream layer (4).
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: June 20, 2017
    Assignee: VALEO SYSTEMES THERMIQUES
    Inventors: Sylvain Moreau, Francois Busson, Regine Haller, Mohamed Yahia, Bertrand Nicolas
  • Patent number: 9579952
    Abstract: A device for thermal conditioning includes a cooling fluid circuit, a heat transfer fluid circuit, and a fluid/fluid heat exchanger that is intended to enable thermal exchange between the cooling fluid and the heat transfer fluid. The cooling fluid circuit includes at least one compressor, a first outer heat exchanger through which an outer air flow passes and a first evaporator. The heat transfer fluid circuit includes at least a first inner heat exchanger, a first heat source and a second outer heat exchanger through which the outer air flow passes. The cooling fluid circuit includes a second evaporator.
    Type: Grant
    Filed: November 15, 2011
    Date of Patent: February 28, 2017
    Assignee: VALEO SYSTEMES THERMIQUES
    Inventors: Bernard Aoun, Mohamed Yahia
  • Patent number: 9459030
    Abstract: A device for expanding a refrigerant fluid has a first inlet and a first outlet which are connected by a first refrigerant circulation duct. The first refrigerant circulation duct has an upstream part and a downstream part which parts are placed in communication by a first communication passage. The device also has a second inlet and a second outlet which are connected by a second refrigerant circulation duct. The device regulates an expansion of the refrigerant fluid and has a first needle valve housed inside the upstream part of the first refrigerant flow duct connected by a first connecting rod to a thermostatic sensor in communication with the second refrigerant flow duct that allows or prevents refrigerant fluid from circulating through the first communicating passage. The device also measures the pressure of the refrigerant fluid entering the evaporator (Pse) which pressure measurement is taken at the first outlet.
    Type: Grant
    Filed: April 12, 2011
    Date of Patent: October 4, 2016
    Assignee: VALEO SYSTEMES THERMIQUES
    Inventors: Jugurtha Benouali, Jin-Ming Liu, Regine Haller, Stefan Karl, Mohamed Yahia, Christophe Rousseau
  • Patent number: 9156333
    Abstract: The invention relates to a system for the heating, ventilation, and/or air conditioning of a motor vehicle passenger compartment. The system includes at least one heat exchanger through which there flows a heat-transfer fluid. The system is equipped with at least one means for pumping the heat-transfer fluid at a flow rate of between 40 1/h and 200 1/h, in such a way that a temperature difference of the heat-transfer fluid between an outlet and an inlet of the heat exchanger is greater than 45° C.
    Type: Grant
    Filed: June 17, 2009
    Date of Patent: October 13, 2015
    Assignee: VALEO SYSTEMES THERMIQUES
    Inventors: Mohamed Yahia, Daniel Neveu
  • Publication number: 20150128626
    Abstract: The invention relates to heating, ventilation and/or air-conditioning equipment (1) including a device (9) for controlling the temperature of a battery (7) of an automobile including at least a compressor (11), a condenser (13), a first expansion member (15), a thermal-conditioning exchanger (17) for exchanging heat between a coolant and a heat-transport fluid (FC), and switching means. The temperature control device (9) includes at least one bypass line (9b) connecting an outlet of the compressor (11) to an inlet of the thermal-conditioning exchanger (17) while bypassing the condenser (13). The invention also relates to a method for controlling the temperature of an automobile battery (7) implemented by means of such heating, ventilation and/or air-conditioning equipment (1).
    Type: Application
    Filed: April 19, 2013
    Publication date: May 14, 2015
    Inventors: Pascal Guigou, Mohamed Yahia
  • Patent number: 9021820
    Abstract: The invention relates to a control process for an air conditioning system. The air conditioning system comprises a thermal loop (1) used as a heat pump and an electrical heating device (2). The process calculates a global heating capacity (HCglo) in function of the temperature chosen by the passenger, the speed of the blower and the temperature of the exterior air. Then, the process calculates a heating capacity (HC1) of the thermal loop (1) and compares this heating capacity (HC1) of the thermal loop to the global heating capacity (HCglo). If the global heating capacity (HCglo) is superior to the heating capacity (HC1) of the thermal loop, the process determines a heating capacity (HC2) of the electrical heating device (2). This heating capacity (HC2) of the electrical heating device (2) added to the heating capacity (HC1) of the thermal loop (1) allows to obtain the global heating capacity (HCglo) required in function of the temperature selected by the passenger.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: May 5, 2015
    Assignee: Valeo Systemes Thermiques
    Inventors: Mohamed Yahia, Bertrand Nicolas, Samy Hammi
  • Publication number: 20140373570
    Abstract: Evaporator, notably for motor vehicle air-conditioning circuit. According to the invention, the evaporator (1), which comprises three layers—upstream (2), intermediate (3) and downstream (4)—through which there flows a coolant that enters the evaporator (1) via the intermediate layer (3) and leaves the evaporator via the upstream layer (2) to cool an air flow (A) passing in succession across said upstream (2), intermediate (3) and downstream (4) layers, comprises means (5E) for inducing a pressure drop between the outlet of the intermediate layer (3) and the inlet of the downstream layer (4).
    Type: Application
    Filed: September 13, 2012
    Publication date: December 25, 2014
    Inventors: Sylvain Moreau, Francois Busson, Regine Haller, Mohamed Yahia, Bertrand Nicolas
  • Patent number: 8891222
    Abstract: A capacitive transducer (1) comprises a polymer film (2) having a first surface and a second surface, a first electrically conductive layer (3) arranged on the first surface of the polymer film (2), and a second electrically conductive layer (3) arranged on the second surface of the polymer film (2). The polymer film (2) is at least partly made from a material having a molecular weight which is at least 21,000 g/mol. The inventors have surprisingly found that silicone polymer materials with high molecular weights, such as liquid silicone rubbers (LSR) or high temperature vulcanizing (HTV) elastomers, have high electrical breakdown strengths, even though technical data sheets from manufacturers state almost identical electrical breakdown strengths similar to that of RTV-2 elastomers. Using such materials in capacitive transducers allows high electrical fields to be applied to transducers without risking electrical breakdown, thereby increasing performance of transducers.
    Type: Grant
    Filed: February 14, 2012
    Date of Patent: November 18, 2014
    Assignee: Danfoss A/S
    Inventor: Mohamed Yahia Benslimane
  • Publication number: 20140298840
    Abstract: The invention relates to a device (1) for controlling the flow of a coolant in a circuit (20) and capable of being exposed to a flow (26) of outside air at the front surface of a vehicle (21), including a means for controlling the flow of coolant, at least one opening of which is placed under the control of a thermostatic detection means, characterized in that the thermostatic detection means includes a thermally conductive surface (9) exposed to said flow (26) of outside air. The invention also relates to the coolant circuit (20) including said control device (1), and to a vehicle (21) provided with such a circuit. The invention can be used for motor vehicles.
    Type: Application
    Filed: August 9, 2012
    Publication date: October 9, 2014
    Applicant: Valeo Systemes Thermiques
    Inventor: Mohamed Yahia
  • Publication number: 20140194048
    Abstract: A heating, ventilation and/or air-conditioning apparatus (1) for the passenger compartment of a motor vehicle includes a housing (2) comprising a first air inlet (3) and a second air inlet (4). The housing (2) directs an inner air flow (Fi) from the first air inlet (3) and/or the second air inlet (4) and contains at least a first heat exchanger (5). The housing (2) includes: an air flow channel (24) directing the inner air flow (Fi) in the housing (2) while bypassing the first heat exchanger (5); and an air inlet duct (23) directing the inner air flow (Fi) in the housing (2) through the first heat exchanger (5). A heating, ventilation and/or air-conditioning installation for the passenger compartment of a motor vehicle includes: an air conditioning loop through which a coolant flows. The loop includes at least one compressor, a first expansion member, an outer heat exchanger and the first heat exchanger (5). The installation also includes the heating, ventilation and/or air-conditioning apparatus (1).
    Type: Application
    Filed: May 4, 2012
    Publication date: July 10, 2014
    Applicant: Valeo Systemes Thermiques
    Inventors: Klaus Wittmann, Mohamed Yahia
  • Publication number: 20140182326
    Abstract: The invention relates to a heat exchanger (1) arranged to perform a heat exchange between a coolant (2) and an internal air flow (3) and comprising a bundle (8) formed by a first layer (4) and a second layer (6) through which the coolant flows, said first layer (4) being defined by a first front face (5a) and a second front face (5b) and said second layer (6) being defined by a third front face (5c) and a fourth front face (5d). At least three of the front faces (5a, 5b, 5c, 5d) are different and arranged in different planes.
    Type: Application
    Filed: April 20, 2012
    Publication date: July 3, 2014
    Applicant: Valeo Systemes Thermiques
    Inventors: Mohamed Yahia, Bertrand Nicolas
  • Publication number: 20140102126
    Abstract: A device for thermal conditioning includes a cooling fluid circuit, a heat transfer fluid circuit, and a fluid/fluid heat exchanger that is intended to enable thermal exchange between the cooling fluid and the heat transfer fluid. The cooling fluid circuit includes at least one compressor, a first outer heat exchanger through which an outer air flow passes and a first evaporator. The heat transfer fluid circuit includes at least a first inner heat exchanger, a first heat source and a second outer heat exchanger through which the outer air flow passes. The cooling fluid circuit includes a second evaporator.
    Type: Application
    Filed: November 15, 2011
    Publication date: April 17, 2014
    Applicant: Valeo Systemes Thermiques
    Inventors: Bernard Aoun, Mohamed Yahia
  • Publication number: 20130240232
    Abstract: The present invention relates to a stretchable protection cover to protect mainly dynamic bodies, such as transducers, from being affected by particles in the environment where the dynamic bodies operate. The protection cover is formed of composites comprising a film of an elastic material having a surface with raised and depressed surface portions, and a barrier layer positioned onto this surface in a manner where the barrier layer takes form of the film surface. In one specific embodiment such composites further are used to form ring-shaped structures utilizable as O-rings.
    Type: Application
    Filed: March 15, 2012
    Publication date: September 19, 2013
    Applicant: DANFOSS POLYPOWER A/S
    Inventor: Mohamed Yahia Benslimane
  • Publication number: 20130208397
    Abstract: A capacitive transducer (1) comprises a polymer film (2) having a first surface and a second surface, a first electrically conductive layer (3) arranged on the first surface of the polymer film (2), and a second electrically conductive layer (3) arranged on the second surface of the polymer film (2). The polymer film (2) is at least partly made from a material having a molecular weight which is at least 21,000 g/mol. The inventors have surprisingly found that silicone polymer materials with high molecular weights, such as liquid silicone rubbers (LSR) or high temperature vulcanizing (HTV) elastomers, have high electrical breakdown strengths, even though technical data sheets from manufacturers state almost identical electrical breakdown strengths similar to that of RTV-2 elastomers. Using such materials in capacitive transducers allows high electrical fields to be applied to transducers without risking electrical breakdown, thereby increasing performance of transducers.
    Type: Application
    Filed: February 14, 2012
    Publication date: August 15, 2013
    Applicant: Danfoss A/S
    Inventor: Mohamed Yahia Benslimane
  • Publication number: 20130099789
    Abstract: A resonance circuit with a variable resonance frequency provided by a variable capacitor having compliant electrodes arranged on a deformable sheet. When the sheet is deformed the capacitance is varied. Further a sensing element comprising the resonance circuit and a sensing system comprising at least one sensing element, a sending unit and a receiving unit. Suitable for mass production. Provides wireless sensing system being cost effective to manufacture. May be used for low cost products, such as toys. May also be used for monitoring displacements in structures, e.g. cracks in wall structures. Further a positions sensitive pressure sensor with pressure sensors arranged on a two-dimensional structure.
    Type: Application
    Filed: May 26, 2011
    Publication date: April 25, 2013
    Applicant: DANFOSS POLYPOWER A/S
    Inventors: Mohamed Yahia Benslimane, Peter Gravesen
  • Publication number: 20130074536
    Abstract: The subject of the invention is a device (5) for expanding a refrigerant fluid comprising, on the one hand, a first inlet (8) of the expansion device and a first outlet (9) of the expansion device which are connected by a first refrigerant circulation duct (11), the first refrigerant circulation duct (11) comprising an upstream part (22) and a downstream part (25) which parts are placed in communication by a first communication passage (18) and, on the other hand, a second inlet (12) of the expansion device and a second outlet (13) of the expansion device which are connected by a second refrigerant circulation duct (14).
    Type: Application
    Filed: April 12, 2011
    Publication date: March 28, 2013
    Inventors: Jugurtha Benouali, Jin-Ming Liu, Regine Haller, Stefan Karl, Mohamed Yahia, Christophe Rousseau
  • Patent number: 8250732
    Abstract: A tubular elastomer actuator with a shape in a cross-sectional view which shape exposes at most one single axis of symmetry of a specific length, e.g., an oval shape. The actuator could be made from a sheet made from a plurality of plate shaped elements which are laminated together and rolled. Each plate shaped element may have a corrugation that gives the element an anisotropic structure, and contains an electrode on only one surface. The actuator displacement is the result of shrinkage displacement of the plate shaped elements upon the application of electrical field across their thickness.
    Type: Grant
    Filed: February 14, 2011
    Date of Patent: August 28, 2012
    Assignee: Danfoss A/S
    Inventors: Mohamed Yahia Benslimane, Peter Gravesen