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| Number | Title | Issue Date |
| 7900462 | External noise reduction of HVAC system for a vehicle A HVAC system for a vehicle that includes a propulsion system, a frame, a passenger compartment, and a door coupled to the frame. The HVAC system includes a refrigeration circuit that selectively controls the temperature of the passenger compartment based on a sense... | 03/08/2011 |
| 7891204 | Refrigeration cycle device for vehicle In a refrigeration cycle device with a capacity-variable compressor, a preset suction pressure that serves as a target value of a refrigerant suction pressure of the compressor is calculated and a refrigerant discharge capacity of the compressor is controlled by ope... | 02/22/2011 |
| 7878011 | Method for determining the desired ventilation air temperature of an automatic air-conditioning system in a convertible A method for determining the desired ventilation air temperature of an automatic heating and air-conditioning system of a vehicle having an opening top is described. The open or closed state of the top of the vehicle is detected, and the heating and air-conditioning... | 02/01/2011 |
| 7832221 | Vehicle compressor control system and method A vehicle compressor is controlled based on an environment parameter and a vehicle status parameter. In at least one embodiment, a temperature control system for a vehicle including an engine is provided. The system includes a compressor having a target operating sp... | 11/16/2010 |
| 7617692 | Fuel efficient method and system for hybrid vehicles A method and system determines when a climate control system of a hybrid vehicle can be operated without the use of an A/C compressor. The method and system make this determination by determining whether the vehicle is at idle or is being driven and determining whet... | 11/17/2009 |
| 7478537 | Method of controlling vehicular air-conditioner A vehicular air-conditioner includes a compressor to be driven by an engine. The vehicular air-conditioner includes a controller configured to reduce a load on the compressor in response to a braking condition of a vehicle. ... | 01/20/2009 |
| 7461514 | Method for energy management of air-conditioning units A method for energy management of air-conditioning units in motor vehicles in which each of the air-conditioning units has a plurality of air-conditioning compressors prevents very heavy loading of an engine of a motor vehicle and prevents the engine from almost sta... | 12/09/2008 |
| 7458224 | Air conditioning system Implementations of the present invention include systems, methods, and apparatus for improving the fuel efficiency (mpg/kpl) of a motor vehicle during those times when the vehicle air conditioning system is operating. Whenever the driver takes his foot off the gas, ... | 12/02/2008 |
| 7454917 | Air conditioner for vehicle An air conditioner for a vehicle has a variable capacity compressor for compressing a refrigerant and controlling a discharged volume of the refrigerant by a power source for driving a vehicle, and a controller for setting a second target temperature higher by a pre... | 11/25/2008 |
| 7392838 | System and method for vehicle defogging condition calculation and control A method and apparatus for controlling a vehicle HVAC system to automatically defog a windshield glass and to prevent fogging or condensation of the windshield glass. The ambient air temperature and vehicle speed are measured and used to determine a windshield glass... | 07/01/2008 |
| 7392662 | Method and system for controlling a climate control system A method and system for controlling a climate control system on a vehicle after entering a heat soak mode in which the outside air temperature associated with the vehicle is affected by absorption of non-ambient heat includes an ambient temperature sensor for sensin... | 07/01/2008 |
| 7380405 | Air conditioning system Implementations of the present invention include systems, methods, and apparatus for improving the fuel efficiency (mpg/kpl) of a motor vehicle during those times when the vehicle air conditioning system is operating. Whenever the driver takes his foot off the gas, ... | 06/03/2008 |
| 7357176 | Method and apparatus for controlling mixture of fresh and recirculated air in a vehicle A blower system and method of operation for a vehicle air conditioning system, including a blower case for receiving air to be circulated into a vehicle cabin, with first and second dampers, for varying between a recirculation position for recirculating vehicle cabi... | 04/15/2008 |
| 7350365 | Method for controlling cogeneration system A method for controlling a cogeneration system is disclosed. The control method determines whether or not the operation load or power load of an air conditioner corresponds to a load requiring driving of a generator, controls the generator to operate when it is dete... | 04/01/2008 |
| 7347056 | Vehicle air-conditioning system A vehicle air-conditioning system provided with a refrigeration cycle system is provided. The air-conditioning system includes an evaporator outlet air target temperature setting unit which sets the target temperature of air at an outlet of an evaporator at a predet... | 03/25/2008 |
| 7348741 | Method and device for controlling fan for cooling vehicle-mounted battery A vehicle which uses an internal combustion engine and a motor generator as drive sources is provided with a battery disposed under a seat and a fan for cooling the battery. Power is exchanged between the motor generator and battery via an inverter. An electronic co... | 03/25/2008 |
| 7337619 | Method and system for assessing a refrigerant charge level in a vehicle air conditioning system A method and system for assessing a level of refrigerant in a vehicle air conditioning system. A refrigerant charge value is determined as a function of ambient air temperature, ambient air humidity, conditioned air temperature, and compressor cycling signals. The r... | 03/04/2008 |
| 7328852 | Method and device for estimating the air discharge temperature of a heat exchanger The invention relates to a method for estimating a heater-core air discharge temperature of an HVAC system. According to the invention, the method uses a model of the heat exchanger. This heat exchanger efficiency model maps a heat exchanger efficiency to a set of a... | 02/12/2008 |
| 7322339 | Apparent torque reserve at idle for direct injected engines A fuel injection system for a direct fuel injection (DFI) engine is provided. The system includes: injection mode module selects a fuel injection mode to be one of a single injection mode and a dual injection mode during DFI engine idle operation based on a torque r... | 01/29/2008 |
| 7318709 | Pump valve assembly A valve assembly is disclosed generally comprising first and second valve plates mounted between the housing for a pump mechanism and a cover, the first plate having flexing flaps corresponding to apertures in the second plate, and the second plate having flexing fl... | 01/15/2008 |
| 7317985 | Motor vehicle and control method of motor vehicle When a vehicle power demand is less than a threshold value, which is set to or around a lower limit of a relatively efficient drive range of an engine and when an engine drive demand is set ON because of requirement for heating by an air conditioning system, the dri... | 01/08/2008 |
| 7308799 | Air conditioning system operating on vehicle waste energy A waste energy-based vehicle air conditioning system includes efficient compression driving means coupled to refrigeration means, which greatly reduces the extra fuel otherwise required to operate conventional vehicle air conditioning systems. In one implementation,... | 12/18/2007 |
| 7304404 | Fan system for vehicles and method for controlling fan in vehicles A fan system is provided which keeps a record of the electric connection between a battery ECU and an accessory battery and starts a fan if it is determined based on the record that the electric connection between the battery ECU and the accessory battery was just i... | 12/04/2007 |
| 7287583 | Air-conditioning apparatus including motor-driven compressor for idle stopping vehicles A low-cost vehicle air-conditioning apparatus for idle stopping vehicles is capable of performing both cooling and heating operations throughout the year. The air-conditioning apparatus includes an engine-driven compressor and engine-driven pump for a heating unit. ... | 10/30/2007 |
| 7281909 | Hybrid compressor system for refrigeration cycle system A compressor device compresses refrigerant of a refrigeration cycle system and is connected to an engine and a motor to selectively receive drive force from one or both of the engine and the motor. When the engine is operated in an idling mode, a control apparatus e... | 10/16/2007 |
| 7275378 | Speed and system pressure control for cooling fan A method and system for controlling a cooling fan that cooperates with an air conditioning condenser in a vehicle. The present embodiments include steps and corresponding implementations for determining a speed of the vehicle, determining a discharge pressure of the... | 10/02/2007 |
| 7269963 | Vehicle air conditioning apparatus Parameters are set in accordance with a running condition of a vehicle and an environmental condition based on a wiper operation signal of the vehicle. The parameters are used to calculate a stable vehicle interior surface temperature Tna of a window glass. The stab... | 09/18/2007 |
| 7263857 | Constant flow rate expansion value To reduce the degree of influence of differential pressure on a pilot valve of a constant flow rate expansion valve. The constant flow rate expansion valve comprises a restriction passage for restricting the flow rate of refrigerant introduced from a refrigerant inl... | 09/04/2007 |
| 7260947 | Air conditioning system operating on vehicle waste energy A waste energy-based vehicle air conditioning system includes efficient compression driving means coupled to refrigeration means. In one implementation, the compression driving means includes a controller (e.g., magnetic clutch) that couples mechanical waste energy ... | 08/28/2007 |
| 7258605 | Heating system for a vehicle A heating system for a vehicle has a heating air blower (24) for generating a heating air stream to be introduced into the interior space of a vehicle, a heater (22) with a heat exchanger arrangement (26) for heating the heating air stream being... | 08/21/2007 |
| 7249468 | Air conditioning system An air conditioning system has a compressor for compressing a liquid refrigerant to form a high pressure vapor which is fed to a condenser for cooling the vapor so that it returns to liquid state and fed to an evaporator. In the evaporator, the liquid is transformed... | 07/31/2007 |
| 7243502 | Control system for variable displacement compressor In a control system of a variable displacement compressor, a pressure sensing means mechanically detects at least one pressure in the refrigerant circuit. A varying means varies a reference value for positioning a valve body. A pressure detector electrically detects... | 07/17/2007 |
| 7234516 | Air conditioner for vehicle use When it is assumed that a vehicle is stopped or parked after its engine was stopped and a predetermined period of time has passed, a cold wind side air mixing door, hot wind side air mixing door, cold wind door and rear cold wind side air mixing door are totally clo... | 06/26/2007 |
| 7231776 | Air-conditioning system for a motor vehicle In an air-conditioning system for a motor vehicle having an internal combustion engine with an engine cooling circuit with a heat exchanger for heating and a heat pump with a refrigerant circuit including a heat exchanger for cooling the interior compartment of the ... | 06/19/2007 |
| 7216608 | Engine cooling apparatus It is an object of the invention to provide an engine cooling apparatus that cools an engine according to an operation state of an engine driven work machine. The invention provides an engine cooling apparatus that is adapted to, in an engine drive work machine incl... | 05/15/2007 |
| 7216495 | Air conditioning system Implementations of the present invention include systems, methods, and apparatus for improving the fuel efficiency (mpg/kpl) of a motor vehicle during those times when the vehicle air conditioning system is operating. Whenever the driver takes his foot off the gas, ... | 05/15/2007 |
| 7210523 | Vehicle air conditioner A vehicle air conditioner has an air conditioning unit and an air conditioning control unit. The air conditioning unit has a FACE blowout port, a DEF blowout port, an upper blowout port. The air conditioning control unit estimates an outside windshield temperature a... | 05/01/2007 |
| 7207185 | Vehicle air conditioning apparatus A vehicle air conditioning apparatus includes a refrigerant circulation circuit. The vehicle air conditioning apparatus has a variable displacement type compressor, a first pressure monitoring point, a second pressure monitoring point and an oil separator in the ref... | 04/24/2007 |
| 7207186 | Refrigeration cycle A variable displacement compressor driven by an engine, such as an engine for driving an automotive vehicle is used as a compressor, and the capacity of the compressor is controlled by a capacity control valve such that the differential pressure between discharge pr... | 04/24/2007 |
| 7207379 | Automotive air conditioning system An automotive air conditioning system comprising a main heating unit 4 for heating air passing through an air conditioning duct 2 with cooling water of an engine E and a refrigeration cycle device 20 having a first refrigerant circulating circui... | 04/24/2007 |
