WO2003087551A1 - Verfahren zur steuerung und/oder regelung eines kühlsystems eines kraftfahrzeugs - Google Patents
Verfahren zur steuerung und/oder regelung eines kühlsystems eines kraftfahrzeugs Download PDFInfo
- Publication number
- WO2003087551A1 WO2003087551A1 PCT/DE2003/001227 DE0301227W WO03087551A1 WO 2003087551 A1 WO2003087551 A1 WO 2003087551A1 DE 0301227 W DE0301227 W DE 0301227W WO 03087551 A1 WO03087551 A1 WO 03087551A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- temperature
- coolant
- component
- target
- cooling system
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
- F01P7/167—Controlling of coolant flow the coolant being liquid by thermostatic control by adjusting the pre-set temperature according to engine parameters, e.g. engine load, engine speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2023/00—Signal processing; Details thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2023/00—Signal processing; Details thereof
- F01P2023/08—Microprocessor; Microcomputer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2025/00—Measuring
- F01P2025/08—Temperature
- F01P2025/30—Engine incoming fluid temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2025/00—Measuring
- F01P2025/08—Temperature
- F01P2025/32—Engine outcoming fluid temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2025/00—Measuring
- F01P2025/08—Temperature
- F01P2025/46—Engine parts temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2025/00—Measuring
- F01P2025/08—Temperature
- F01P2025/50—Temperature using two or more temperature sensors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2025/00—Measuring
- F01P2025/60—Operating parameters
- F01P2025/62—Load
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2025/00—Measuring
- F01P2025/60—Operating parameters
- F01P2025/64—Number of revolutions
Definitions
- the invention is based on a method for controlling and / or regulating a cooling system according to the type of the independent claim.
- a cooling system contains a heat source to be cooled, for example a drive motor of a motor vehicle, which is cooled by means of a coolant by free or forced convection.
- the temperature difference across the heat source depends on the heat input and the coolant flow, while the temperature of the
- Coolant is determined by the heat input from the heat source, the heat dissipation via coolers in the circuit and the heat capacities of the materials.
- the focus is, among other things, on a needs-based control or regulation of the cooling system with the aim of reducing energy consumption, reducing any emissions that may occur or
- a critical temperature is, for example, the temperature of the cylinder head of an internal combustion engine used as a drive motor.
- Temperature sensors which detect temperatures of the components of an internal combustion engine or other components to be cooled, have become known, for example, from the technical journal MTZ 62 (2001) 1, pages 30 to 35, "A cylinder seal concept for future generations of internal combustion engines” Cylinder head gasket arranged.
- a method for optimally controlling the cooling capacity of an internal combustion engine of a motor vehicle has become known, for example, from DE 100 35 770 AI.
- the invention has for its object a method for control and / or
- the method according to the invention for controlling and / or regulating a cooling system provides that a desired coolant temperature is dependent on at least one
- Component target temperature is determined.
- the coolant setpoint temperature refers to a specific point in the cooling system. If the cooling system contains a drive motor, in particular an internal combustion engine, such a specific point is, for example, the entry of the coolant into the drive motor or the exit of the coolant.
- the target component temperature is, for example, the temperature of a component of the drive motor or the target temperature of another component integrated in the cooling system.
- a component is, for example, an electric motor, a generator or an electronic assembly that is cooled by the coolant.
- the target component temperature can also be, for example, a predetermined target temperature of the coolant itself at a predetermined location.
- the target component temperature can, for example, be predefined or be set as a function of parameters.
- the relationship between the component target temperature and the coolant target temperature determined therefrom can be predefined, for example, on the basis of a physical relationship that has been found out, or can be variably specified as a function of parameters. Instead of the physical connection, an experimentally determined connection can also be used. The relationship must ensure that the specified coolant set temperature maintains the specified component set temperature and, if possible, does not exceed it.
- the control and / or regulation of the cooling system of the motor vehicle can be carried out in a known manner with the determined coolant target temperature or a variable representing the coolant target temperature. Reference is made in this
- the method according to the invention enables a close approach to the thermal load limit of the component. This can have advantages for the
- a sequence control of the method according to the invention can be accommodated, for example, in a control unit of a drive motor, which is not shown in detail, so that additional costs for electronic components do not arise.
- An embodiment of the method according to the invention provides that a calculated temperature difference is used to determine the coolant setpoint temperature from the component setpoint temperature, the temperature difference being subtracted from the component setpoint temperature.
- the temperature difference is like this to determine that the resulting set coolant temperature maintains the set component temperature and does not exceed it if possible.
- the temperature difference initially depends on the heat input into the cooling system, for example due to the energy consumption of one contained in the cooling system
- Drive motor is influenced.
- One embodiment of the method according to the invention therefore provides that the energy consumption of the drive motor is taken into account when determining the temperature difference.
- the temperature difference also depends on the heat transfer between the coolant and the environment, the heat transfer in turn depending on the coolant flow.
- An advantageous embodiment of the method according to the invention therefore provides that the coolant flow is taken into account when determining the temperature difference.
- a further development of this embodiment which can be provided when an internal combustion engine is used as the drive motor, provides that the heat input is determined from the fuel consumption of the internal combustion engine, multiplied by a factor.
- the factor depends on the energy content of the fuel and the efficiency of the internal combustion engine at the current operating point.
- Factor can be stored in a characteristic field.
- the factor is a constant value.
- the constant value is advantageously determined at least as a function of the type of fuel used.
- the method according to the invention can be used particularly advantageously both in a gasoline internal combustion engine and in a diesel internal combustion engine.
- One embodiment provides that the temperature difference is determined from a characteristic field in which the energy consumption or fuel consumption and the coolant flow are provided as input variables.
- the target component temperature depends on the current operating point of a drive motor integrated in the cooling system.
- the dependency is preferably stored in a characteristic field.
- a further development of the method according to the invention provides that the determined coolant target temperature is corrected if necessary with a correction temperature that a controller determines from the target component temperature and a measured actual component temperature.
- the single figure shows function blocks for determining a coolant target temperature from a component target temperature.
- the figure shows a target component temperature 10, which provides a first characteristic field 11.
- the first characteristic field 11 determines the desired component temperature 10 from a rotational speed 12 and a torque 13 of a drive motor, not shown in any more detail.
- the target component temperature 10 is supplied to a target coolant temperature determination 14 and a controller 15.
- the coolant target temperature determination 14 contains a second characteristic field 16, which outputs a calculated temperature difference 19 as a function of a coolant flow 17 and an energy consumption 18.
- the coolant target temperature determination 14 further includes a first summer 20, which from the
- Temperature difference 19 and the target component temperature 10 determines a target coolant temperature 21.
- the controller 15 determines one from the target component temperature 10 and a measured actual component temperature 23 provided by a temperature sensor 22
- Correction temperature 24 which is fed to a second summer 25, which provides a corrected coolant setpoint temperature 26 from the correction temperature 24 and the coolant setpoint temperature 21.
- the target component temperature 10 corresponds, for example, to a maximum permissible temperature of a component to be cooled that is integrated in a cooling system, such as a component of a drive motor.
- a cooling system such as a component of a drive motor.
- a component is, for example, a cylinder head gasket of an internal combustion engine.
- Components can furthermore be provided which are arranged outside the drive motor. Such components are, for example, electric motors, generators or electronic assemblies that are to be cooled.
- the coolant itself can also be provided as a component, which should have a specific desired component temperature 10 at a predetermined location in the cooling system.
- the target component temperature 10 can be predefined, for example. Alternatively, the target component temperature 10 can depend on parameters which are described further below.
- the coolant setpoint temperature determination 14 has the task of
- Target temperature 10 to determine the coolant target temperature 21.
- the functional relationship between the target component temperature 10 and the target coolant temperature 21 can be predetermined.
- a fixed, predetermined temperature difference can be provided between the two temperatures, which is to be determined in such a way that the actual component temperature which is established complies with the permissible maximum temperature of the component and does not exceed it, if possible.
- the relationship can be calculated on the basis of physical relationships or determined experimentally.
- the simple configuration can be used in particular in an essentially stationary cooling system in which the heat flows, apart from warming up, change only slightly.
- the target component temperature 10 is set to 110 ° C, for example.
- the coolant target temperature 21 is then set to 90 ° C., for example.
- a relationship between a component temperature and the coolant temperature can be derived as follows. In the following, the simplification is carried out that static relationships are considered.
- the starting point is a general equation that represents the quotient of temperature change and time change.
- the temporal Component temperature change (dT / dt) is equal to the quotient of the sum of the heat flows ( ⁇ Qs) that are added to and removed from the component and the product of mass (m) and specific heat capacity (cp):
- the actual component temperature remains constant when the sum of the heat flows is just zero.
- This condition resolved according to the coolant temperature, results in a relationship between component and coolant temperature for the stationary case using the known equations for the heat transfer between component and coolant.
- the coolant temperature is a function of the amount of heat introduced (waste heat or power loss of the component), the coolant flow 17 and the actual component temperature 23.
- the basic equation of heat transfer by convention is used below to determine the coolant setpoint temperature 21 , This basic equation is as follows:
- the temperature of the component then corresponds to the target component temperature 10.
- the heat transfer coefficient alpha is assumed to be constant. Among other things, its volume flow dependency is neglected.
- the heat transfer area A can be estimated. After the coolant temperature is resolved, the following relationship results:
- Coolant set temperature 21 component set temperature 10 - Qs / (alpha * A)
- the heat input depends on the energy consumption of the drive motor.
- the coolant setpoint temperature 21 can then be determined from the component setpoint temperature 10 taking into account the
- the drive motor is an internal combustion engine
- the energy consumption results directly from the fuel consumption.
- a corresponding fuel consumption signal is generally available in the engine control. Different types of fuel can be taken into account by different constants.
- the heat balance on the component to be cooled depends not only on the heat flows considered so far, but also on the coolant flow 17.
- the functional relationship between the target component temperature 10 and the target coolant temperature 21 is therefore configured as a function of the coolant flow 17.
- the coolant flow 17 is taken into account when the temperature difference 19 is provided. The relationship is expediently stored in the second characteristic field 16, to which the coolant flow 17 is supplied as an input signal.
- the second characteristic field 16 provides the temperature difference 19 as a function of both the energy consumption 18 and the coolant flow 17.
- the temperature difference 19 from the second characteristic field 16 is output at, for example, 20 ° C.
- An increase in the energy consumption 18 leads to an increase in the temperature difference 19 to, for example, 30 ° C.
- an increase in the coolant flow 17 leads to a decrease in the temperature difference 19 to, for example, 10 ° C.
- Another embodiment relates to the provision of the target component temperature 10, which can be determined, for example, as a function of an operating point of an existing drive motor. If it is an internal combustion engine, the working point is, for example, by the speed 12 and / or the
- Torque 13 of the internal combustion engine can be represented.
- the speed 12 and the torque 13 are supplied to the first characteristic field 11, which outputs the target component temperature 12.
- the controller 15 determines the correction temperature 24 from the target component temperature 10 and the actual component temperature 23, with which the target coolant temperature 21 is corrected in the second summer 25 to the corrected target coolant temperature 26.
- the actual component temperature 23 is provided by the temperature sensor 22, which measures the temperature of the component.
- the controller 15 contains at least a proportional portion and preferably an integral part that ensures stationary accuracy.
- the controller 15 first corrects a stationary error, which is the basis of the functional relationship between the component set temperature 10 and the coolant set temperature 21 in the coolant set temperature determination 14. The deviation can be, for example, from the second one, if applicable
- Characteristic field 16 are caused, which outputs the temperature difference 19.
- the controller 15 also supports the downstream control or regulation of the coolant temperature to which the corrected coolant target temperature 26 is supplied in the case of transient conditions.
- the upstream control supports the downstream control and thus increases the control speed and control accuracy overall.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Motor Or Generator Cooling System (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Hybrid Electric Vehicles (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE50309078T DE50309078D1 (de) | 2002-04-15 | 2003-04-11 | Verfahren zur steuerung und/oder regelung eines kühlsystems eines kraftfahrzeugs |
EP03746235A EP1497539B1 (de) | 2002-04-15 | 2003-04-11 | Verfahren zur steuerung und/oder regelung eines kühlsystems eines kraftfahrzeugs |
US10/511,289 US7523725B2 (en) | 2002-04-15 | 2003-04-11 | Method for controlling and/or regulating a cooling system of a motor vehicle |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10216720.6 | 2002-04-15 | ||
DE10216720 | 2002-04-15 | ||
DE10316753.6 | 2003-04-10 | ||
DE10316753A DE10316753A1 (de) | 2002-04-15 | 2003-04-10 | Verfahren zur Steuerung und/oder Regelung eines Kühlsystems eines Kraftfahrzeugs |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003087551A1 true WO2003087551A1 (de) | 2003-10-23 |
Family
ID=29251762
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2003/001227 WO2003087551A1 (de) | 2002-04-15 | 2003-04-11 | Verfahren zur steuerung und/oder regelung eines kühlsystems eines kraftfahrzeugs |
Country Status (4)
Country | Link |
---|---|
US (1) | US7523725B2 (de) |
EP (1) | EP1497539B1 (de) |
DE (1) | DE50309078D1 (de) |
WO (1) | WO2003087551A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112431662A (zh) * | 2019-08-26 | 2021-03-02 | 通用汽车环球科技运作有限责任公司 | 主动热管理系统和流量控制方法 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20120060508A (ko) * | 2010-12-02 | 2012-06-12 | 현대자동차주식회사 | 전자식 서모스탯의 제어방법 및 그 제어장치 |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3516502A1 (de) * | 1985-05-08 | 1986-11-13 | Gustav Wahler Gmbh U. Co, 7300 Esslingen | Temperaturregeleinrichtung fuer das kuehlmittel von brennkraftmaschinen |
US5529025A (en) * | 1993-07-19 | 1996-06-25 | Bayerische Motoren Werke Ag | Cooling system for an internal-combustion engine of a motor vehicle comprising a thermostatic valve which contains an electrically heatable expansion element |
DE19728351A1 (de) * | 1997-07-03 | 1999-01-07 | Daimler Benz Ag | Verfahren zur Wärmeregulierung einer Brennkraftmaschine |
EP0965737A2 (de) * | 1998-06-17 | 1999-12-22 | Siemens Canada Limited | Regelsystem für totale Kühlung einer Brennkraftmaschine |
DE19939138A1 (de) * | 1999-08-18 | 2001-02-22 | Bosch Gmbh Robert | Verfahren zur Temperaturregelung des Kühlmittels eines Verbrennungsmotors mittels einer elektrisch betriebenen Kühlmittelpumpe |
DE19951362A1 (de) * | 1999-10-26 | 2001-05-03 | Bosch Gmbh Robert | Verfahren zur Regelung der Kühlwassertemperatur eines Kraftfahrzeugs mit einem Verbrennungsmotor |
DE10035770A1 (de) | 2000-07-22 | 2002-01-31 | Bosch Gmbh Robert | Verfahren zur optimalen Steuerung der Kühlleistung eines Motors eines Kraftfahrzeugs |
DE10153943A1 (de) | 2001-11-06 | 2003-05-22 | Baasel Carl Lasertech | Laserbeschrifter und Verfahren zum Aufbringen eines Matrixcodes auf einen Gegenstand |
DE10163944A1 (de) | 2001-12-22 | 2003-07-03 | Bosch Gmbh Robert | Verfahren zur Ansteuerung von elektrisch betätigbaren Komponenten eines Kühlsystems, Computerprogramm, Steuergerät, Kühlsystem und Brennkraftmaschine |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2656361A1 (de) * | 1976-12-13 | 1978-06-15 | Skf Kugellagerfabriken Gmbh | Vorrichtung zur kuehlung von verbrennungskraftmaschinen |
JPS6049850A (ja) * | 1983-08-30 | 1985-03-19 | Sumitomo Heavy Ind Ltd | 連続鋳造設備における二次冷却材流量制御方法 |
JP3276553B2 (ja) * | 1995-01-19 | 2002-04-22 | 東京エレクトロン株式会社 | 処理装置及び処理方法 |
JPH08303291A (ja) * | 1995-05-10 | 1996-11-19 | Honda Motor Co Ltd | 内燃機関の出力制御装置及び車両の制御装置 |
IT1293667B1 (it) * | 1997-08-01 | 1999-03-08 | Fiat Ricerche | Sistema di raffreddamento per un motore di autoveicolo. |
-
2003
- 2003-04-11 US US10/511,289 patent/US7523725B2/en not_active Expired - Fee Related
- 2003-04-11 WO PCT/DE2003/001227 patent/WO2003087551A1/de active IP Right Grant
- 2003-04-11 EP EP03746235A patent/EP1497539B1/de not_active Expired - Lifetime
- 2003-04-11 DE DE50309078T patent/DE50309078D1/de not_active Expired - Lifetime
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3516502A1 (de) * | 1985-05-08 | 1986-11-13 | Gustav Wahler Gmbh U. Co, 7300 Esslingen | Temperaturregeleinrichtung fuer das kuehlmittel von brennkraftmaschinen |
US5529025A (en) * | 1993-07-19 | 1996-06-25 | Bayerische Motoren Werke Ag | Cooling system for an internal-combustion engine of a motor vehicle comprising a thermostatic valve which contains an electrically heatable expansion element |
DE19728351A1 (de) * | 1997-07-03 | 1999-01-07 | Daimler Benz Ag | Verfahren zur Wärmeregulierung einer Brennkraftmaschine |
EP0965737A2 (de) * | 1998-06-17 | 1999-12-22 | Siemens Canada Limited | Regelsystem für totale Kühlung einer Brennkraftmaschine |
DE19939138A1 (de) * | 1999-08-18 | 2001-02-22 | Bosch Gmbh Robert | Verfahren zur Temperaturregelung des Kühlmittels eines Verbrennungsmotors mittels einer elektrisch betriebenen Kühlmittelpumpe |
DE19951362A1 (de) * | 1999-10-26 | 2001-05-03 | Bosch Gmbh Robert | Verfahren zur Regelung der Kühlwassertemperatur eines Kraftfahrzeugs mit einem Verbrennungsmotor |
DE10035770A1 (de) | 2000-07-22 | 2002-01-31 | Bosch Gmbh Robert | Verfahren zur optimalen Steuerung der Kühlleistung eines Motors eines Kraftfahrzeugs |
DE10153943A1 (de) | 2001-11-06 | 2003-05-22 | Baasel Carl Lasertech | Laserbeschrifter und Verfahren zum Aufbringen eines Matrixcodes auf einen Gegenstand |
DE10163944A1 (de) | 2001-12-22 | 2003-07-03 | Bosch Gmbh Robert | Verfahren zur Ansteuerung von elektrisch betätigbaren Komponenten eines Kühlsystems, Computerprogramm, Steuergerät, Kühlsystem und Brennkraftmaschine |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112431662A (zh) * | 2019-08-26 | 2021-03-02 | 通用汽车环球科技运作有限责任公司 | 主动热管理系统和流量控制方法 |
Also Published As
Publication number | Publication date |
---|---|
US20050257755A1 (en) | 2005-11-24 |
EP1497539B1 (de) | 2008-01-23 |
US7523725B2 (en) | 2009-04-28 |
DE50309078D1 (de) | 2008-03-13 |
EP1497539A1 (de) | 2005-01-19 |
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