WO2008014731A1 - Air-conditioning system for a vehicle and method for controlling an air-conditioning system - Google Patents
Air-conditioning system for a vehicle and method for controlling an air-conditioning system Download PDFInfo
- Publication number
- WO2008014731A1 WO2008014731A1 PCT/DE2006/001358 DE2006001358W WO2008014731A1 WO 2008014731 A1 WO2008014731 A1 WO 2008014731A1 DE 2006001358 W DE2006001358 W DE 2006001358W WO 2008014731 A1 WO2008014731 A1 WO 2008014731A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- conditioning system
- air conditioning
- control unit
- motor vehicle
- operating state
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00492—Heating, cooling or ventilating [HVAC] devices comprising regenerative heating or cooling means, e.g. heat accumulators
- B60H1/005—Regenerative cooling means, e.g. cold accumulators
Definitions
- the invention relates to a method for controlling a calibration system for a motor vehicle, comprising a refrigeration circuit, which has a compressor driven by an engine of the motor vehicle, a condenser and an evaporator, a cold accumulator which can be discharged via a coolant circuit, and Control unit, which can put the air conditioning system in various operating conditions, wherein in a first operating state of the Kiimatmaschinessystems an interior of the motor vehicle is cooled with driven compressor by the evaporator and wherein in a second operating state of the air conditioning system, which is provided in particular for stationary air conditioning, the interior of the motor vehicle is cooled by unloading the cold storage when not driven compressor.
- the invention further relates to a method for controlling an air conditioning system for a motor vehicle, comprising a refrigeration circuit having a compressor driven by an engine of the motor vehicle, a condenser and an evaporator, a cold accumulator which can be discharged via a coolant circuit, and a control unit , which can put the air conditioning system in various operating states, wherein in a first operating state of the air conditioning system, an interior of the motor vehicle is cooled by the evaporator with the compressor driven, and wherein in a second operating state of the air conditioning tion system, which is provided in particular for stationary air conditioning, the interior of the motor vehicle is cooled with unloaded compressor by unloading the cold storage.
- Such air conditioning systems and the methods for controlling the air conditioning systems are known, for example from DE 10 2004 019 607 Al.
- the systems offer the possibility of cooling a vehicle interior while the internal combustion engine is running, in that a direct energy extraction from the internal combustion engine takes place by means of a compressor driven by the internal combustion engine.
- a cold storage is provided, which can be charged in particular by the compressor. It is also conceivable that the cold storage is charged in another way, for example by a separate electrically driven compressor. In the latter case, there is a conventional primary air conditioning for driving operation, which is operable with the engine running, while another self-contained air conditioning system is provided, via which a cold storage is loaded. Regardless of whether the cold storage is integrated into the primary air conditioning of the motor vehicle or self-contained, the cold energy in the state of the motor vehicle can be removed in the cold storage, that is at dormant internal combustion engine.
- the invention builds on the generic air conditioning system in that the control unit signals can be fed, which characterize a load on the engine, and that the air conditioning system can be converted by the control unit in the second operating state when the load the motor exceeds a predetermined value.
- the operating state of the air conditioning system which is provided per se for the stationary air-conditioning system, can therefore also be used while driving in a manner that relieves the vehicle engine. As a result, load peaks of the engine are reduced, which reduces the undesirable performance losses and greatly increased consumption values at high drive power. If a vehicle is driving uphill, for example, into the state of a high load on the internal combustion engine, then during this uphill drive the vehicle can be used
- Air conditioning required energy to be removed from the cold storage.
- the cold storage tank can then be recharged without further ado.
- the invention is developed in a particularly advantageous manner by the fact that the control unit signals are fed, representing an engine speed and affygeschwindig- speed, and that the air conditioning system is convertible to the second operating state, when the engine speed is above a predetermined limit and the vehicle speed below a predetermined limit.
- High engine speed and low vehicle speed are a typical indication of the presence of a high load of the internal combustion engine, for example, during uphill driving with small gear.
- these criteria alone can be used to switch from the first operating state to the second operating state, that is to switch off the compressor and to carry out the further air conditioning by discharging the cold accumulator.
- control unit the signals can be fed directly from sensors connected to the control unit.
- the invention may be designed in such a way that the control unit, the signals via a data bus of the motor vehicle can be fed.
- sensors can be saved compared to the previously mentioned case, since speed values and speed values are determined anyway in each vehicle and are available in every operating state.
- the invention builds on the generic method by the fact that the control unit signals are supplied that characterize a load on the engine, and that the air conditioning system is converted by the control unit in the second operating state when the load the motor exceeds a predetermined value.
- the advantages and special features of the air conditioning system according to the invention are also realized in the context of a method. This also applies to the following particularly preferred embodiments of this inventive method.
- control unit signals are supplied representing an engine speed and a vehicle speed, and that the air conditioning system is transferred to the second operating state when the engine speed is above a predetermined limit and the vehicle speed is below a predetermined limit.
- the method is preferably designed such that the control unit, the signals are supplied directly from connected to the controller sensors.
- the signals are fed to the control unit via a data bus of the motor vehicle.
- the invention is based on the finding that a device which is provided per se for auxiliary climate control can advantageously be used with regard to the relief of an internal combustion engine, which offers advantages with regard to the available drive power as well as the fuel consumption and associated emissions of the motor vehicle brings with it.
- the invention will now be described by way of example with reference to the accompanying drawings by way of particularly preferred embodiments.
- FIG. 1 is a schematic representation of an air conditioning system according to the invention.
- FIG. 2 shows a flow chart for explaining a method according to the invention.
- FIG. 1 shows a schematic representation of an inventive air conditioning system.
- the air conditioning system 10 comprises a refrigeration circuit 12.
- the refrigeration circuit 12 includes a compressor 14 driven by an engine, not shown, a condenser 16, a dryer / collector 32, an expansion valve 34, an evaporator 18, and a check valve 36 arranged in the order mentioned in the flow direction of the refrigerant. Parallel to the expansion valve 34 and the evaporator 18, a further expansion valve 38 and a further evaporator 20 may be arranged.
- an additional parallel arranged evaporator 20 with upstream expansion valve 38 is optional, and it can be used meaningfully, for example, in the case that the refrigeration circuit 12 for cooling various rich of the vehicle interior to be used optimally, for example for cooling a driver's cab and a sleeping cabin arranged behind it.
- the evaporators acting as a heat exchanger 18, 20 can be arranged in an optimized manner, where the cold is needed.
- Solenoid valves 66, 68 are furthermore provided in the parallel paths equipped with the evaporators 18, 20, so that the evaporators 18, 20 can be integrated jointly or optionally.
- an additional evaporator 40 is provided with upstream expansion valve 42.
- This evaporator 40 is disposed within a cold reservoir 22 so that the cold storage 22 can be charged by the evaporator 40.
- a solenoid valve 44 is provided in order to selectively integrate the evaporator 40 and the upstream expansion valve 42 in the refrigeration circuit 12 and thus to effect a charging process of the cold accumulator 22.
- the cold storage 22 is further connected to a coolant circuit 24, can be removed via the cold from the cold storage 22.
- Coolant circuit 24 includes a heat exchanger 46, a surge tank 48 with level sensor, a pump 50 and arranged in the cold storage 22 heat exchanger 62, wherein the coolant circuit 24 associated components are arranged in the flow direction of the coolant in that order.
- the refrigerant circuit 12 is furthermore equipped with a temperature sensor 52 arranged downstream of the evaporator 40 arranged in the cold storage 22.
- the coolant circuit with temperature sensors 54, 56 arranged on the input side and output side with respect to the heat exchanger 62 arranged in the cold accumulator 22 and a mass flow sensor 58 in the flow direction behind the pump 50 fitted.
- the temperature sensors 52, 54, 56 and the mass flow sensor 58 are used to determine the state of charge in the cold storage 22, wherein the temperature sensor 52 is used in the refrigerant circuit 12 in particular in combination with the mass flow sensor 58 and the pump power 50 for determining the state of charge, while the temperature sensors 54 , 56 in the coolant circuit 24 by comparison of coolant inlet temperature and coolant outlet temperature and by using stored maps a determination of the state of charge of the cold accumulator 22 allow.
- a control unit 26 is provided for detecting and influencing the operation of the air conditioning system 10.
- This control unit 26 receives signals from the temperature sensors 52, 54, 56, the mass flow sensor 58, a speed sensor 28, which detects the rotational speed of the motor vehicle engine, a speed sensor 30 and a temperature sensor 60 for determining the ambient temperature. Furthermore, the controller 26 is associated with a main switch 64.
- the air conditioning system 10 of the invention operates as follows. In the conventional air conditioning of the vehicle interior of the refrigerant circuit 12 is in a known manner in operation.
- the evaporators 18, 20 can be activated selectively or jointly.
- the air to be supplied to the interior is supplied to the evaporators 18, 20 by means of unillustrated blowers.
- the interior of the motor vehicle is thus cooled via the evaporators 18, 20 or optionally by one of these evaporators 18, 20. Unloading the
- Cold storage 22 takes place by activation of the coolant circuit 24 by the pump 50 is turned on by the control unit 26. Consequently, refrigerant flows through the Heat exchanger 62, it can give off heat there and then supplied to the heat exchanger 46 in the cooled state. There, the cooled coolant is supplied with an air flow, which can subsequently be supplied to the interior. After flowing out of the heat exchanger 46 and flowing through the surge tank 58, the coolant is fed back to the pump 50.
- the discharging of the cold accumulator 22 thus represents, with regard to the cooling of the vehicle interior, a second operating state, which is conventionally used for stationary air conditioning.
- control unit 26 If, owing to the values transmitted by the sensors 28, 30, it is determined by the control unit 26 that the engine speed exceeds a predetermined value, so that a high load condition of the vehicle engine is typically present, the control unit 26 causes the refrigeration circuit 12 to be activated when the vehicle engine is running is deactivated while the coolant circuit 24 is activated. In this way, the vehicle engine is relieved in the described advantageous manner.
- FIG. 2 shows a flow chart for explaining a method according to the invention.
- the present invention has been explained using the example of an air-conditioning system 10, in which the cold storage 22 is integrated into the conventional vehicle air conditioning system, that is, charged by the power of the compressor 14, which is driven directly by the vehicle engine.
- the invention can also be used in connection with other types of air conditioning systems.
- the system containing the cold storage 22 is made self-sufficient, that is, separated from the conventional vehicle air conditioning system.
- the self-sufficient air conditioning is then preferably equipped with an electric compressor, which is responsible for charging the cold storage. Occurs in such a system, the overload of the drive motor, so here, the conventional, not coupled with the cold storage air conditioning switched off and the air conditioning can be taken over by the self-sufficient air conditioning in which the cold storage is discharged.
- Vehicle air conditioning system may be provided, or the control units are disconnected, and they are able to communicate with each other. Another possibility is that separate control units for the conventional air conditioning and self-sufficient air conditioning are assigned to a higher-level control unit that coordinates the separate control units.
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/DE2006/001358 WO2008014731A1 (en) | 2006-08-03 | 2006-08-03 | Air-conditioning system for a vehicle and method for controlling an air-conditioning system |
DE112006004063T DE112006004063A5 (en) | 2006-08-03 | 2006-08-03 | An air conditioning system for a motor vehicle and method for controlling an air conditioning system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/DE2006/001358 WO2008014731A1 (en) | 2006-08-03 | 2006-08-03 | Air-conditioning system for a vehicle and method for controlling an air-conditioning system |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008014731A1 true WO2008014731A1 (en) | 2008-02-07 |
Family
ID=37885800
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2006/001358 WO2008014731A1 (en) | 2006-08-03 | 2006-08-03 | Air-conditioning system for a vehicle and method for controlling an air-conditioning system |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE112006004063A5 (en) |
WO (1) | WO2008014731A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008020084A1 (en) | 2006-08-01 | 2008-09-25 | Foddis, Ulisse | Carrier platform for a camera attachable to it |
DE102008014385A1 (en) | 2008-03-17 | 2009-09-24 | Ulisse Foddis | Camera i.e. digital camera, guiding device, has holder supported in swiveling plane and rotatable around another swiveling plane such that axis is formed by hinge to arrange one of swiveling planes perpendicular to other swiveling plane |
CN103085632A (en) * | 2011-11-01 | 2013-05-08 | 富士重工业株式会社 | Vehicle, Air Conditioning Apparatus, And Air Conditioning Method |
FR3040920A1 (en) * | 2015-09-15 | 2017-03-17 | Valeo Systemes Thermiques | METHOD FOR CONTROLLING A CLIMATE SYSTEM OF A MOTOR VEHICLE |
DE102009020836B4 (en) | 2008-05-28 | 2021-09-16 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | Method of operating and method of controlling a heating, ventilation and air conditioning system for improved vehicle fuel economy |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5780916A (en) * | 1980-11-06 | 1982-05-20 | Nissan Motor Co Ltd | Air conditioning device for vehicle |
DE10308254A1 (en) * | 2003-02-25 | 2004-09-02 | Behr Gmbh & Co. Kg | Air conditioning system for a vehicle and associated operating method |
EP1516760A2 (en) * | 2003-09-18 | 2005-03-23 | Webasto AG | Air conditioning system for the passenger compartment of a vehicle |
-
2006
- 2006-08-03 WO PCT/DE2006/001358 patent/WO2008014731A1/en active Application Filing
- 2006-08-03 DE DE112006004063T patent/DE112006004063A5/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5780916A (en) * | 1980-11-06 | 1982-05-20 | Nissan Motor Co Ltd | Air conditioning device for vehicle |
DE10308254A1 (en) * | 2003-02-25 | 2004-09-02 | Behr Gmbh & Co. Kg | Air conditioning system for a vehicle and associated operating method |
EP1516760A2 (en) * | 2003-09-18 | 2005-03-23 | Webasto AG | Air conditioning system for the passenger compartment of a vehicle |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008020084A1 (en) | 2006-08-01 | 2008-09-25 | Foddis, Ulisse | Carrier platform for a camera attachable to it |
DE102008014384A1 (en) | 2006-08-01 | 2008-10-09 | Ulisse Foddis | Handle for a camera guide device |
DE102008014385A1 (en) | 2008-03-17 | 2009-09-24 | Ulisse Foddis | Camera i.e. digital camera, guiding device, has holder supported in swiveling plane and rotatable around another swiveling plane such that axis is formed by hinge to arrange one of swiveling planes perpendicular to other swiveling plane |
DE102009020836B4 (en) | 2008-05-28 | 2021-09-16 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | Method of operating and method of controlling a heating, ventilation and air conditioning system for improved vehicle fuel economy |
CN103085632A (en) * | 2011-11-01 | 2013-05-08 | 富士重工业株式会社 | Vehicle, Air Conditioning Apparatus, And Air Conditioning Method |
FR3040920A1 (en) * | 2015-09-15 | 2017-03-17 | Valeo Systemes Thermiques | METHOD FOR CONTROLLING A CLIMATE SYSTEM OF A MOTOR VEHICLE |
Also Published As
Publication number | Publication date |
---|---|
DE112006004063A5 (en) | 2009-07-09 |
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