Patents by Inventor Jin Ming Liu

Jin Ming Liu 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).

  • Publication number: 20210039472
    Abstract: The invention concerns a method for controlling a system (1) for a motor vehicle, said system comprising at least: —an actuator, —a volatile memory (RAM) in which at least one item of position information of the actuator (IPRAM) is stored, —a long-term memory (EPROM) in which the following are stored: o at least one item of position information (IPROM) of the actuator, o an item of information relating to the powering down of the actuator (IHT), this item of information assuming a first value (v1) when the system has been powered down in a controlled manner and assuming a second value (v2) when the system has suffered a fault causing the current value of the position of the actuator stored in the volatile memory (RAM) to be deleted, in particular when the system has stopped being powered electrically as the result of an error, or communication between the system and a computer has been cut off as the result of an error.
    Type: Application
    Filed: March 5, 2019
    Publication date: February 11, 2021
    Applicant: Valeo Systemes Thermiques
    Inventors: Muriel Porto, Thomas Guenet, Jin-Ming Liu, Wissem Nouainia
  • Patent number: 9732993
    Abstract: The invention relates to a refrigerant circuit for thermally conditioning a vehicle passenger compartment, comprising a plurality of branches containing at least one exchanger, of which branch a first branch is in series with a second branch and a third branch, said second branch being in parallel with said third branch, and a means of placing the third branch m communication with the second branch, said means being installed between a sector of the third branch which sector is situated downstream of an external exchanger and a portion of the second branch which is situated upstream of a first control member.
    Type: Grant
    Filed: April 25, 2012
    Date of Patent: August 15, 2017
    Assignee: VALEO SYSTEMS THERMIQUES
    Inventor: Jin-Ming Liu
  • Patent number: 9499025
    Abstract: The invention relates to an air-conditioning loop for heating, ventilation, and/or air-conditioning equipment in which a coolant circulates. The loop including a compressor comprising a coolant outlet connected to a delivery pipe and a coolant inlet connected to a suction pipe. The loop also including an internal heat exchanger which is capable of functioning at least as a condenser, and which is connected to the compressor via the delivery pipe. The loop also including an external unit which is connected to the compressor via the suction pipe and which includes at least one external heat exchanger capable of functioning at least as an evaporator, with the internal heat exchanger being connected to the external unit via a first intermediate duct comprising at least one pressure-release member. The loop includes a deicing pipe connected to the compressor and/or to the delivery pipe, as well as to the external unit.
    Type: Grant
    Filed: February 12, 2013
    Date of Patent: November 22, 2016
    Assignee: VALEO SYSTEMES THERMIQUES
    Inventor: Jin Ming Liu
  • 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: 9341398
    Abstract: An air conditioning device is used in a motor vehicle. The air conditioning device includes air conditioning circuit, which includes a compressor (14), a condenser (11), and/or an internal exchanger, an electric expansion valve (12) which opening ratio is changed according to a control signal, and an evaporator (13), which are traversed in this order by a refrigerant fluid and a control unit (40) capable of controlling a control signal of the expansion valve so as to regulate a control variable relating to the superheating of the evaporator or to the sub-cooling of the condenser (11) according to a chosen regulation rule.
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: May 17, 2016
    Assignee: VALEO SYSTEMES THERMIQUES
    Inventor: Jin Ming Liu
  • Patent number: 9157672
    Abstract: A command device (13) includes a sensor (15,16) for the measurement of a measured value VM of a characteristic C of a fluid FR,A and a comparison (14) of the measured value VM of the characteristic C of the fluid FR,A with at least two step-values VSmin, VSmax of the characteristic C. The command device (13) includes an upstream temperature sensor (20) to be positioned upstream the evaporator (12) according to the air flow direction (6) to measure an upstream temperature T2 of the air flow (3) and give an information (18) which is taken into account by the command device (13) in order to determine the step-values VSmin, VSmax of the characteristic C.
    Type: Grant
    Filed: July 17, 2009
    Date of Patent: October 13, 2015
    Assignee: VALEO SYSTEMES THERMIQUES
    Inventors: Jin-Ming Liu, Regine Haller, Stefan Karl, Eng Kuach
  • Publication number: 20150020533
    Abstract: The invention relates to an air-conditioning loop for heating, ventilation, and/or air-conditioning equipment in which a coolant circulates. The loop including a compressor comprising a coolant outlet connected to a delivery pipe and a coolant inlet connected to a suction pipe. The loop also including an internal heat exchanger which is capable of functioning at least as a condenser, and which is connected to the compressor via the delivery pipe. The loop also including an external unit which is connected to the compressor via the suction pipe and which includes at least one external heat exchanger capable of functioning at least as an evaporator, with the internal heat exchanger being connected to the external unit via a first intermediate duct comprising at least one pressure-release member. The loop includes a deicing pipe connected to the compressor and/or to the delivery pipe, as well as to the external unit.
    Type: Application
    Filed: February 12, 2013
    Publication date: January 22, 2015
    Inventor: Jin Ming Liu
  • Patent number: 8776536
    Abstract: Control process of an expansion valve (EXV) situated in an air conditioning circuit in which circulates and flows a coolant, with the air conditioning circuit comprising at least a compressor (CMP), a condenser (CND) and an evaporator (EVP), characterized in that this control process includes the following steps or stages: when overheating is less than a threshold value, opening of the expansion valve is governed by a static control, and when overheating is higher than the threshold value, opening of the expansion valve is governed by a dynamic control.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: July 15, 2014
    Assignee: Valeo Systemes Thermiques
    Inventors: Jugurtha Benouali, Jin Ming Liu
  • Publication number: 20140150476
    Abstract: The invention relates to a refrigerant circuit (1) for thermally conditioning a vehicle passenger compartment, comprising a plurality of branches containing at least one exchanger, of which branch a first branch (11) is in series with a second branch (12) and a third branch (13), said second branch (12) being in parallel with said third branch (13), and a means (36) of placing the third branch (13) in communication with the second branch (12), said means being installed between a sector (37) of the third branch (13) which sector is situated downstream of an external exchanger (28) and a portion (38) of the second branch (12) which is situated upstream of a first control member (15).
    Type: Application
    Filed: April 25, 2012
    Publication date: June 5, 2014
    Applicant: Valeo Systemes Thermiques
    Inventor: Jin-Ming Liu
  • 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
  • Publication number: 20120210738
    Abstract: The present invention relates to a method for controlling the outlet temperature (TRCPO) of a compressor (CP) built into the air-conditioning loop of a vehicle in which a subcritical refrigerant fluid flows and including a condenser (CD), an expansion valve (EXV), and an evaporator (EV). The monitoring method comprises the steps of calculating a limit temperature at the compressor inlet (TRCPI_L), estimating a temperature at the compressor inlet (TRCPI_E), and modifying a control signal of the compressor (PWMCP) or a setpoint value of the evaporation temperature (SP_TEV).
    Type: Application
    Filed: October 15, 2010
    Publication date: August 23, 2012
    Inventor: Jin-Ming Liu
  • Publication number: 20120102980
    Abstract: A control process controls an expansion valve (EXV). The expansion valve is situated in an air conditioning circuit in which a coolant circulates and flows. The air conditioning circuit comprises at least a compressor (CMP), a condenser (CND), and an evaporator (EVP).
    Type: Application
    Filed: September 2, 2011
    Publication date: May 3, 2012
    Inventors: Jugurtha BENOUALI, Jin Ming LIU
  • Patent number: 8082752
    Abstract: The invention proposes a pressure-reducing module for an air conditioning circuit (10) through which a supercritical refrigerant flows. The module is connected to the circuit via one inlet and two outlets. The module comprises a pressure-reducing device (120), and a distribution valve (16) connected to the pressure-reducing device and to the two outlets. A dual evaporator circuit using such a pressure-reducing module is also proposed. The two evaporators (131, 132) are mounted in parallel. The module receives the fluid coming from a gas cooler via its inlet and delivers the fluid to at least one of the two evaporators (131, 132) via its outlets.
    Type: Grant
    Filed: January 3, 2007
    Date of Patent: December 27, 2011
    Assignee: Valeo Systemes Thermiques S.A.S.
    Inventors: Jin-Ming Liu, Mohamed Yahia
  • Publication number: 20110074763
    Abstract: A liquid crystal display (LCD) power supplying circuit includes a motherboard switch circuit, an LCD power circuit, a power switch circuit, and a first power supplying unit. An input terminal of the motherboard switch circuit is coupled to a power output terminal of a motherboard. An input terminal of the power switch circuit is coupled to the LCD power circuit. The first power supplying unit is coupled to an output terminal of the motherboard switch circuit, an output terminal of the power switch circuit and a microprocessor, and the first power supplying unit supplies power from the motherboard or power from the LCD power circuit to the microprocessor.
    Type: Application
    Filed: September 9, 2010
    Publication date: March 31, 2011
    Applicants: INNOCOM TECHNOLOGY (SHENZHEN) CO., LTD., Chimei Innolux Corporation
    Inventors: He-Kang ZHOU, Ching-Chung LIN, Em-Ily YANG, Jin-Ming LIU
  • Publication number: 20080229770
    Abstract: The present invention relates to an air conditioning device, in particular for motor vehicle, including an air-conditioning circuit comprising a compressor (14), a condenser (11), and/or an internal exchanger, an electric expansion valve (12) which opening ratio is changed according to a control signal, and an evaporator (13), which are traversed in this order by a refrigerant fluid. The installation comprises in addition a control unit (40) suitable to manage the control signal of the expansion valve so as to control a parameter of the evaporator (13) over heating or the condenser (11) sub cooling in accordance with a predetermined regulation law. The control signal of the compressor valve is such as: Electric architecture is optimal while using a minimum of sensors The optimal coefficient of performance is maximum The control of the cold power A protection is ensured to limit the discharge temperature of the compressor and/or the aspiration temperature of the compressor.
    Type: Application
    Filed: February 28, 2008
    Publication date: September 25, 2008
    Inventor: Jin Ming Liu
  • Patent number: 7243501
    Abstract: An expansion device, intended for installation in an air conditioning system with a supercritical refrigerant fluid (FR), is described. The expansion device (12) comprises a body (120) through which refrigerant fluid passes, equipped with an inlet chamber (1210) into which the refrigerant fluid arrives and an outlet chamber (1230) through which the refrigerant fluid departs. The expansion device further comprises a set of expansion means to allow the refrigerant fluid to pass from the inlet chamber (1210) to the outlet chamber (1230), comprising a variable expansion means (1212) comprising a first orifice (34) and an adjusting screw (134) suitable for adjusting the flow section of the first orifice (34); and, a fixed expansion means comprising a second orifice (35) with a fixed flow section.
    Type: Grant
    Filed: April 8, 2005
    Date of Patent: July 17, 2007
    Assignee: Valeo Climatisation
    Inventors: Mohamed Ben Yahia, Jin-Ming Liu
  • Publication number: 20070151287
    Abstract: The invention proposes a pressure-reducing module for an air conditioning circuit (10) through which a supercritical refrigerant flows. The module is connected to the circuit via one inlet and two outlets. The module comprises a pressure-reducing device (120), and a distribution valve (16) connected to the pressure-reducing device and to the two outlets. A dual evaporator circuit using such a pressure-reducing module is also proposed. The two evaporators (131, 132) are mounted in parallel. The module receives the fluid coming from a gas cooler via its inlet and delivers the fluid to at least one of the two evaporators (131, 132) via its outlets.
    Type: Application
    Filed: January 3, 2007
    Publication date: July 5, 2007
    Applicant: Valeo Systemes Thermiques S.A.S.
    Inventors: Mohamed Yahia, Jin-Ming Liu
  • Publication number: 20050223740
    Abstract: The invention proposes an expansion device, intended for installation in an air conditioning system with a supercritical refrigerant fluid (FR). The expansion device (12) comprises a body (120) through which the refrigerant fluid is to pass, equipped with an inlet chamber (1210) into which the refrigerant fluid arrives and an outlet chamber (1230) through which the refrigerant fluid departs. The expansion device further comprises a set of expansion means to allow the refrigerant fluid to pass from the inlet. chamber (1210) to the outlet chamber (1230). These expansion means comprise: variable expansion means (1212) comprising a first orifice (34) and an adjusting screw (134) suitable for adjusting the flow section of the first orifice (34), and fixed expansion means comprising a second orifice (35) with a fixed flow section.
    Type: Application
    Filed: April 8, 2005
    Publication date: October 13, 2005
    Applicant: Valeo Climatisation S.A.
    Inventors: Mohamed Ben Yahia, Jin-Ming Liu
  • Patent number: 6796137
    Abstract: The invention proposes an air conditioning system for motor vehicles which is fitted with an injection computer and an electronic control device. The system comprises a first measuring member suitable for supplying a value relating to the pressure of the fluid at a first point in the air conditioning circuit which is situated between the outlet of the expansion member and the outlet of the evaporator, and a second measuring member suitable for supplying a value relating to the pressure of the fluid at a second point in the air conditioning circuit which is situated at the inlet to the compressor. The electronic control device makes use of the solution of an equation which relates the mass flow rate of the refrigerant fluid to the difference in pressure between the first point and the second point in order to calculate an estimate of a magnitude relating to the refrigerant fluid.
    Type: Grant
    Filed: September 22, 2003
    Date of Patent: September 28, 2004
    Assignee: Valeo Climatisation
    Inventors: Jin Ming Liu, Emmanuel Mace, Mohamed Ben Yahia
  • Publication number: 20040060310
    Abstract: The invention proposes an air conditioning system for motor vehicles which is fitted with an injection computer and an electronic control device. The system comprises a first measuring member suitable for supplying a value relating to the pressure of the fluid at a first point in the air conditioning circuit which is situated between the outlet of the expansion member and the outlet of the evaporator, and a second measuring member suitable for supplying a value relating to the pressure of the fluid at a second point in the air conditioning circuit which is situated at the inlet to the compressor. The electronic control device makes use of the solution of an equation which relates the mass flow rate of the refrigerant fluid to the difference in pressure between the first point and the second point in order to calculate an estimate of a magnitude relating to the refrigerant fluid.
    Type: Application
    Filed: September 22, 2003
    Publication date: April 1, 2004
    Applicant: Valeo Climatisation S.A.
    Inventors: Jin Ming Liu, Emmanuel Mace, Mohamed Ben Yahia