DE102010001752B4 - cooling system - Google Patents
cooling system Download PDFInfo
- Publication number
- DE102010001752B4 DE102010001752B4 DE102010001752A DE102010001752A DE102010001752B4 DE 102010001752 B4 DE102010001752 B4 DE 102010001752B4 DE 102010001752 A DE102010001752 A DE 102010001752A DE 102010001752 A DE102010001752 A DE 102010001752A DE 102010001752 B4 DE102010001752 B4 DE 102010001752B4
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- Prior art keywords
- temperature
- low
- circuit
- cooling
- cooler
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000001816 cooling Methods 0.000 title claims abstract description 70
- 239000002826 coolant Substances 0.000 claims abstract description 67
- 238000002485 combustion reaction Methods 0.000 claims abstract description 21
- 239000007789 gas Substances 0.000 description 30
- 238000010438 heat treatment Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000009529 body temperature measurement Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
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
- F01P7/165—Controlling of coolant flow the coolant being liquid by thermostatic control characterised by systems with two or more loops
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
- F02M26/23—Layout, e.g. schematics
- F02M26/28—Layout, e.g. schematics with liquid-cooled heat exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
- F02M26/33—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage controlling the temperature of the recirculated gases
-
- 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
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
- F01P2005/105—Using two or more pumps
-
- 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
- F01P2037/00—Controlling
- F01P2037/02—Controlling starting
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
Kühlsystem eines Verbrennungsmotors (2), der einen Hochtemperaturkühlmittelkreislauf (3) mit einem Hochtemperaturkühler (8) und einen Niedrigtemperaturkühlmittelkreislauf (4) mit einem Niedrigtemperaturkühler (23) aufweist, wobei der Verbrennungsmotor (1) einen AGR-Kühler (29) aufweist, der mit dem Niedrigtemperaturkühlmittelkreislauf (4) in Verbindung steht, welcher von dem Hochtemperaturkühlmittelkreislauf (3) getrennt ist, dadurch gekennzeichnet, dass der AGR-Kühler (29) durch ein Steuerelementsystem (14, 16) entweder mit dem Niedertemperaturkühlmittelkreislauf (4) oder mit dem Hochtemperaturkühlmittelkreislauf (3) verbunden wird, wobei das Steuerelementsystem (14, 16) den AGR-Kühler (29) in einer Warmlaufphase mit dem Hochtemperaturkühlmittelkreislauf (3) verbindet, und nach Abschluss der Warmlaufphase die Verbindung zum Hochtemperaturkühlmittelkreislauf (3) schließt, so dass der AGR-Kühler (29) nach Beendigung der Warmlaufphase wieder mit dem Niedertemperaturkühlmittelkreislauf (4) verbunden ist.Cooling system of an internal combustion engine (2), which has a high-temperature coolant circuit (3) with a high-temperature cooler (8) and a low-temperature coolant circuit (4) with a low-temperature cooler (23), the internal combustion engine (1) having an EGR cooler (29) which is connected to the low-temperature coolant circuit (4) is in connection, which is separated from the high-temperature coolant circuit (3), characterized in that the EGR cooler (29) is connected to either the low-temperature coolant circuit (4) or to the high-temperature coolant circuit (14, 16) by a control element system ( 3) is connected, wherein the control element system (14, 16) connects the EGR cooler (29) in a warm-up phase with the high-temperature coolant circuit (3), and after completion of the warm-up phase, the connection to the high-temperature coolant circuit (3) closes so that the EGR After the end of the warm-up phase, the cooler (29) is again connected to the low-temperature coolant circuit (4th ) connected is.
Description
Die Erfindung betrifft ein Kühlsystem eines Verbrennungsmotors gemäß dem Oberbegriff des Hauptanspruchs, wobei der Verbrennungsmotor einen Hochtemperaturkühlmittelkreislauf mit einem Hochtemperaturkühler und einen Niedrigtemperaturkühlmittelkreislauf mit einem Niedrigtemperaturkühler aufweist, wobei der Verbrennungsmotor einen AGR-Kühler aufweist, der mit dem Niedrigtemperaturkühlmittelkreislauf in Verbindung steht, welcher von dem Hochtemperaturkühlmittelkreislauf getrennt ist.The invention relates to a cooling system of an internal combustion engine according to the preamble of the main claim, wherein the internal combustion engine having a high-temperature coolant circuit with a high-temperature radiator and a low-temperature coolant circuit with a low-temperature radiator, the internal combustion engine having an EGR cooler, which communicates with the low-temperature coolant circuit, which of the high-temperature coolant circuit is disconnected.
Die
Aus der
Auch die
Die
Die
Die
Ebenso offenbart die
Die Zusammenfassung der
In der Zusammenfassung der
Die
Die
Die auf die Anmelderin zurückgehende
Die
In der
Die
Die
Um die Kühleffektivität eines AGR-Kühlers zu verbessern ist demnach bekannt, zusätzlich zum eigentlichen Motorkühlkreislauf, welcher auch als Hochtemperaturkühlkreislauf bezeichnet werden kann, einen separaten Kühlkreislauf als Niedertemperaturkühlkreislauf vorzusehen. Dieser Niedertemperaturkreislauf ist vollständig von dem Motorkühlkreislauf getrennt, wobei ein Niedertemperaturkühler in dem Niedertemperaturkreislauf eingebunden ist. Der AGR-Kühler steht mit dem Niedertemperaturkühlkreislauf in Kontakt, bzw. ist mit diesem verbunden. Da der Niedertemperaturkühlkreislauf vollständig von dem Motorkühlkreislauf getrennt ist, ergibt sich so zwangsläufig, dass die von dem AGR-Kühler aufgenommen Wärme nur in den Niedertemperaturkühlkreislauf übertragen wird. Insbesondere in der Warmlaufphase des Verbrennungsmotors ist dies aber nachteilig, da die von dem rückgeführtem Abgas aufgenommene Wärme nicht in den Motorkühlkreislauf übertragen wird.In order to improve the cooling efficiency of an EGR cooler is therefore known, in addition to the actual engine cooling circuit, which may also be referred to as a high-temperature cooling circuit to provide a separate cooling circuit as a low-temperature cooling circuit. This low-temperature circuit is completely separated from the engine cooling circuit, wherein a low-temperature radiator is integrated in the low-temperature circuit. The EGR cooler is in contact with or connected to the low-temperature cooling circuit. Since the low-temperature cooling circuit is completely separated from the engine cooling circuit, it follows inevitably that the heat absorbed by the EGR cooler heat is transferred only in the low-temperature cooling circuit. However, this is disadvantageous in particular in the warm-up phase of the internal combustion engine, since the heat absorbed by the recirculated exhaust gas is not transferred into the engine cooling circuit.
Insofern liegt der Erfindung die Aufgabe zugrunde, ein Kühlsystem der Eingangs genannten Art mit einfachen Mitteln so zu verbessern, dass die Warmlaufphase des Verbrennungsmotors günstiger beeinflusst wird, also verkürzt wird.In this respect, the invention has the object to improve a cooling system of the type mentioned by simple means so that the warm-up phase of the engine is favorably influenced, so is shortened.
Erfindungsgemäß wird die Aufgabe von einem Kühlsystem mit den Merkmalen des Anspruchs 1 gelöst, wobei der AGR-Kühler durch ein Steuerelementsystem entweder mit dem Niedertemperaturkreislauf oder mit dem Hochtemperaturkreislauf verbunden wird, wobei das Steuerelementsystem den AGR-Kühler in einer Warmlaufphase mit dem Hochtemperaturkühlmittelkreislauf verbindet, und nach Abschluss der Warmlaufphase die Verbindung zum Hochtemperaturkühlmittelkreislauf schließt, so dass der AGR-Kühler nach Beendigung der Warmlaufphase wieder mit dem Niedertemperaturkühlmittelkreislauf verbunden ist.According to the invention the object is achieved by a cooling system with the features of claim 1, wherein the EGR cooler is connected by a control system with either the low-temperature circuit or the high-temperature circuit, wherein the control system connects the EGR cooler in a warm-up phase with the high-temperature coolant circuit, and after completion of the warm-up phase, the connection to the high-temperature coolant circuit closes, so that the EGR cooler is reconnected to the low-temperature coolant circuit after the warm-up phase has ended.
Vorteilhaft wird somit erreicht, dass der AGR-Kühler, bzw. der AGR-Kühlkreislauf nur für eine begrenzte Zeitdauer mit dem Hochtemperaturkühlmittelkreislauf verbunden ist, um so nur in der Warmlaufphase die von den rückgeführten Abgas aufgenommene Wärme an diesen zu übertragen. Dadurch wird das Kühlmittel in dem Hochtemperaturkreislauf, also in dem Motorkühlkreislauf durch den zusätzlichen Wärmeeintrag schneller aufgewärmt, also die Wärmerückgewinnung verbessert. Ist die Warmlaufphase beendet, wird der AGR-Kühler bzw. der AGR-Kühlmittelkreislauf wieder mit dem Niedertemperaturkühlkreislauf verbunden, und von dem Hochtemperaturkühlmittelkreislauf getrennt.Advantageously, it is thus achieved that the EGR cooler or the EGR cooling circuit is connected to the high-temperature coolant circuit only for a limited period of time so as to transfer the heat absorbed by the recirculated exhaust gas to it only in the warm-up phase. As a result, the coolant in the high-temperature circuit, ie in the engine cooling circuit, is warmed up more quickly by the additional heat input, thus improving the heat recovery. Once the warm-up phase has ended, the EGR cooler or the EGR coolant circuit is reconnected to the low-temperature cooling circuit and disconnected from the high-temperature coolant circuit.
Günstig im Sinne der Erfindung ist, wenn das Steuerelementsystem zwischen dem Hochtemperaturkühlmittelkreislauf und dem Niedertemperaturkühlmittelkreislauf angeordnet ist, wobei der AGR-Kühlmittelkreislauf bzw. der einzige AGR-Kühler mit dem Steuerelementsystem verbunden ist. Das Steuerelementsystem ist in einer ersten Ausgestaltung so ausgeführt, dass dieses einen Niedertemperatureingang, einen Niedertemperaturausgang, einen Hochtemperatureingang, einen Hochtemperaturausgang, einen AGR-Kühlerausgang und einen AGR-Kühlereingang aufweist, wobei ein Vermischen der beiden Kühlkreisläufe aufgrund der Ausgestaltung des Steuerelementsystems nicht möglich ist.Favorable in the context of the invention is when the control system between the high-temperature coolant circuit and the low-temperature coolant circuit is arranged, wherein the EGR coolant circuit and the only EGR cooler is connected to the control system. In a first embodiment, the control system is designed such that it has a low-temperature input, a low-temperature output, a high-temperature input, a high-temperature output, an EGR cooler output and an EGR cooler input, it being impossible to mix the two cooling circuits due to the configuration of the control system.
In bevorzugter Ausgestaltung ist für die erste Ausgestaltung vorgesehen, dass das Steuerelementsystem als 4-Wege-Ventil ausgeführt ist. Dieses ist betriebsparameterabhängig schaltbar, so dass das Kühlmittel des AGR-Kühlkreislaufs entweder in den Hochtemperaturausgang oder in den Niedertemperaturausgang strömen kann. In der Warmlaufphase kann sich das Kühlmittel des AGR-Kühlkreislaufs mit dem Kühlmittel des Hochtemperaturkreislaufs nicht vermischen.In a preferred embodiment, it is provided for the first embodiment that the control system is designed as a 4-way valve. This can be switched depending on operating parameters, so that the coolant of the EGR cooling circuit can flow either into the high-temperature outlet or into the low-temperature outlet. During the warm-up phase, the coolant of the EGR cooling circuit can not mix with the coolant of the high-temperature circuit.
Ist die Warmlaufphase beendet, wird der Pfad des AGR-Kühlmittels zum Hochtemperaturkreislauf geschlossen und der Pfad zum Niedertemperaturkreislauf geöffnet. Ein Vermischen der beiden Kühlmittelkreisläufe ist auch in diesem Fall nicht möglich. When the warm-up phase is over, the path of the EGR coolant to the high-temperature circuit is closed and the path to the low-temperature circuit is opened. A mixing of the two coolant circuits is not possible in this case.
Gleichwohl kann Kühlmittel in dem Niedertemperaturkreislauf während der Warmlaufphase weiter zirkulieren, ohne dass ein Vermischen der Kühlmittel aus dem Niedertemperaturkühlkreislauf und dem Hochtemperaturkreislauf befürchtet werden muss. Wesentlich ist aber, dass die Wärme des AGR-Kühlmittels während der Warmlaufphase auf das Kühlmittel des Hochtemperaturkühlkreislauf übertragen wird.However, coolant may continue to circulate in the low-temperature cycle during the warm-up phase without fear of mixing the coolants from the low-temperature cooling circuit and the high-temperature circuit. However, it is essential that the heat of the EGR coolant is transferred to the coolant of the high-temperature cooling circuit during the warm-up phase.
Das Steuerelementsystem ist zweckmäßiger Weise mit einem bevorzugt zentralen Steuergerät des Verbrennungsmotors bzw. – des Kraftfahrzeuges verbunden, wobei in dem Steuergerät die entsprechenden Betriebsparameter zum Feststellen einer Warmlaufphase oder deren Beendigung abgelegt sind. Die Betriebsparameter werden in an sich bekannter Weise mit entsprechenden Vorrichtungen aufgenommen und an das Steuergerät übermittelt. Beispielhaft kann dazu ein Temperaturbetrag des Kühlmittels z. B. in dem Motorkühlkreislauf aufgenommen werden. Erreicht dieses die vorgegebene und zuvor festgelegte Grenztemperatur, welche eine Warmlaufphase bzw. deren Ende detektiert, generiert das Steuergerät ein entsprechendes Steuersignal zum entsprechenden Schalten des beispielhaften 4-Wege-Ventils.The control system is expediently connected to a preferably central control unit of the internal combustion engine or of the motor vehicle, wherein the corresponding operating parameters for determining a warm-up phase or its termination are stored in the control unit. The operating parameters are recorded in a conventional manner with appropriate devices and transmitted to the control unit. By way of example, a temperature amount of the coolant z. B. be included in the engine cooling circuit. If this reaches the predetermined and previously defined limit temperature, which detects a warm-up phase or its end, the control unit generates a corresponding control signal for the corresponding switching of the exemplary 4-way valve.
Weitere Vorteilhafte Ausgestaltungen sind in den Unteransprüchen und der folgenden Ablaufbeschreibung offenbart. Es zeigt die einzige:Further advantageous embodiments are disclosed in the subclaims and the following sequence description. It shows the only one:
Der Hochtemperaturkreislauf
Aus dem Thermostaten
Aus der Verbindungsleitung
An dem 4-Wege-Ventil
In dem Niedertemperaturkühlkreislauf
Ein Abgaskühler
In einer Warmlaufphase des Verbrennungsmotors
So kann die Warmlaufphase des Verbrennungsmotors
In der Figur sind Abgasleitungen und/oder weitere Bestandteile des Abgasrückführsystems (AGR bzw. EGR = exhaust gas recirculation) nicht dargestellt.In the figure, exhaust pipes and / or other components of the exhaust gas recirculation system (EGR or EGR = exhaust gas recirculation) are not shown.
Claims (4)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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DE102010001752A DE102010001752B4 (en) | 2010-02-10 | 2010-02-10 | cooling system |
CN201110009467.9A CN102146835B (en) | 2010-02-10 | 2011-01-12 | Cooling system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE102010001752A DE102010001752B4 (en) | 2010-02-10 | 2010-02-10 | cooling system |
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DE102010001752A1 DE102010001752A1 (en) | 2011-08-11 |
DE102010001752B4 true DE102010001752B4 (en) | 2012-06-21 |
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DE102010001752A Active DE102010001752B4 (en) | 2010-02-10 | 2010-02-10 | cooling system |
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CN (1) | CN102146835B (en) |
DE (1) | DE102010001752B4 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010064472B3 (en) * | 2010-02-10 | 2015-05-13 | Ford Global Technologies, Llc | Method of operating a cooling system and cooling system |
GB2495756B (en) * | 2011-10-20 | 2018-03-14 | Gm Global Tech Operations Llc | Cooling system for a hybrid powertrain provided with an EGR system |
US8794195B2 (en) * | 2012-02-03 | 2014-08-05 | Ford Global Technologies, Llc | Heat storage system for an engine |
US10337389B2 (en) | 2015-01-26 | 2019-07-02 | Ford Global Technologies, Llc | Control means for controlling the coolant flows of a split cooling system |
DE102017213777B4 (en) | 2017-08-08 | 2022-02-17 | Audi Ag | Method for operating a drive device of a motor vehicle with several coolant coolers and corresponding drive device |
DE102019208959A1 (en) * | 2019-06-19 | 2020-12-24 | Volkswagen Aktiengesellschaft | Internal combustion engine with a cooling system comprising an EGR cooler |
DE102020201350A1 (en) * | 2020-02-04 | 2021-08-05 | Volkswagen Aktiengesellschaft | Assembly for a cooling system of a motor vehicle with a heat exchanger, a control valve and an actuating device |
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2010
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EP1772612A1 (en) * | 2005-08-02 | 2007-04-11 | Toyota Jidosha Kabushiki Kaisha | EGR cooler system |
DE102005042396A1 (en) * | 2005-09-06 | 2007-03-15 | Behr Gmbh & Co. Kg | Cooling system for a motor vehicle |
DE102005055323A1 (en) * | 2005-11-21 | 2007-05-31 | Audi Ag | Cooling device for use in cooling circuit of vehicle, has valve that is provided in inlet-sided storage box, where valve opens or closes low temperature area with main area depending on operating parameters |
DE102008036277A1 (en) * | 2007-09-25 | 2009-04-02 | Ford Global Technologies, LLC, Dearborn | Cooling system with insulated cooling circuits |
Also Published As
Publication number | Publication date |
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CN102146835B (en) | 2015-09-30 |
DE102010001752A1 (en) | 2011-08-11 |
CN102146835A (en) | 2011-08-10 |
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