EP2520779A2 - Circuit de refroidissement - Google Patents

Circuit de refroidissement Download PDF

Info

Publication number
EP2520779A2
EP2520779A2 EP12166814A EP12166814A EP2520779A2 EP 2520779 A2 EP2520779 A2 EP 2520779A2 EP 12166814 A EP12166814 A EP 12166814A EP 12166814 A EP12166814 A EP 12166814A EP 2520779 A2 EP2520779 A2 EP 2520779A2
Authority
EP
European Patent Office
Prior art keywords
coolant
coolant circuit
heat accumulator
circuit according
heat
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.)
Withdrawn
Application number
EP12166814A
Other languages
German (de)
English (en)
Other versions
EP2520779A3 (fr
Inventor
Christian Ackermann
Jan Aichele
Günter Dr. Uhl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DBK David and Baader GmbH
Original Assignee
DBK David and Baader GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by DBK David and Baader GmbH filed Critical DBK David and Baader GmbH
Publication of EP2520779A2 publication Critical patent/EP2520779A2/fr
Publication of EP2520779A3 publication Critical patent/EP2520779A3/fr
Withdrawn legal-status Critical Current

Links

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
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/14—Indicating devices; Other safety devices
    • F01P11/20—Indicating devices; Other safety devices concerning atmospheric freezing conditions, e.g. automatically draining or heating during frosty weather
    • 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
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/14—Indicating devices; Other safety devices
    • F01P2011/205—Indicating devices; Other safety devices using heat-accumulators

Definitions

  • the invention relates to a coolant circuit of a drive according to the preamble of patent claim 1.
  • a coolant circuit for an internal combustion engine in which a latent heat accumulator is charged via the cooling water.
  • This is - similar to a thermos - so well insulated that it can hold the stored heat energy for a long time, for example, over a period of several days.
  • These latent heat storage consist of a material, such as a salt, which is liquid at the normal operating temperature of the engine and in the range of phase change temperature, for example, a temperature of 60 - 90 ° C, solidifies (Phase Change Material (PCM)).
  • the released phase transformation or crystallization enthalpy can be used to change the heat exchange Medium, for example, the cooling water to heat up.
  • the cooling water is in heat exchange with the latent heat storage, so that the liquid material is cooled and finally crystallized, using the heat released to heat the cooling water, so that it can be brought to operating temperature.
  • the latent heat accumulator is then charged again so that it is ready for the next cold start.
  • the DE 103 44 018 A1 describes a coolant circuit in which the entire coolant is conveyed when switching off the drive in a so-called hot water tank, from which the coolant is returned when starting the drive in the coolant circuit.
  • the present invention seeks to provide a coolant circuit of a drive, which can be brought to operating temperature with relatively little effort and in a short time.
  • the coolant circuit of a drive such as an internal combustion engine, an electric drive or a hybrid drive, a heat storage
  • a heat storage can be heated by the cold coolant by heat exchange to operating temperature.
  • the heat storage is designed with the coolant itself as a storage medium, the storage temperature with charged heat storage is above the operating temperature of the coolant circuit.
  • the invention thus turns away from conventional solutions in which complex PCM materials are used as the storage medium.
  • the use of the coolant as a storage medium reduces the device complexity considerably.
  • the heat transfer rate can be significantly improved due to the larger temperature gradient compared to the solutions described above, in which the coolant is stored at operating temperature.
  • One Another advantage is that even with a longer standstill of the drive and even with the best insulation inevitable drop in the storage temperature of the storage medium over the conventional solutions significantly longer time a sufficient temperature difference is present, which can be used for heat exchange with the coolant.
  • the heat accumulator can be bypassed via a bypass channel, which can be brought via a valve arrangement in fluid communication with the heat accumulator or against this shut off.
  • the heat storage can be thermodynamically switched on, for example, in a cold start of the drive, so that the coolant can be brought to operating temperature very quickly.
  • the heat storage is preferably carried out with an electric heater.
  • This electric heater can also be used to prevent a drop in temperature in the heat storage at a longer shutdown of the drive.
  • the heating via an electrical machine, such as a generator, supplied with energy, which is designed such that during operation released kinetic energy, such as braking energy, is convertible into electrical energy for operating the heater.
  • an electrical machine such as a generator
  • the heater can also be provided with a connection, so that the heat storage is charged externally, for example, overnight.
  • the structure of the coolant circuit is particularly compact when the heater is integrated in the heat accumulator.
  • the operating temperature is below 100 ° C, for example, at about 95 ° C
  • the "excessive" storage temperature is in the range of more than 120 ° C, for example at 130 ° C.
  • This temperature difference is particularly well suited for a coolant circuit in which a water / glycol mixture is used as the coolant. In such a coolant significantly higher temperatures (> 160 ° C) should be avoided, since then the water / glycol mixture can decompose. In principle, however, it is also possible to use other coolants that are stable even at higher temperatures.
  • the "excessive" storage temperature is in a range of more than 130 ° C, but below the decomposition temperature.
  • Advantage here is the larger storable amount of energy.
  • the heat accumulator must then be decoupled from the "rest" of the coolant circuit due to the resulting increased system pressure, which can be up to 8 bar. This decoupling is possible for example by suitable valves. For this system must then be provided for the emptying of the memory, a controlled pressure equalization between the storage tank and the coolant circuit to avoid vapor bubbles when relaxing.
  • this may be provided with a circulation pump through which a partial flow of the refrigerant withdrawn at the outlet of the heat accumulator and conveyed back to the input - in this way a uniform heating of the storage medium is ensured.
  • the heat accumulator is arranged in the coolant circuit between a radiator and the drive.
  • FIG. 1 shows an extremely simplified block diagram of a coolant circuit 1 of an internal combustion engine 2.
  • a water / glycol mixture is used as the coolant.
  • the heated by the engine 2 coolant can according to FIG. 1 be used to increase the vehicle interior temperature via an interior heating.
  • the heated in the engine 2 to its operating temperature of about 95 ° C coolant is fed to a heat exchanger 4 an air conditioner to heat the vehicle interior to be supplied air.
  • the slightly cooled after this heat exchange with the vehicle interior air coolant is supplied downstream of the heat exchanger 4 a cooler 6 and cooled there, for example, by wind and / or a fan.
  • the cooler 6 can be bypassed during cold start of the engine by means of a bypass line 8, which can be opened or closed via a bypass valve 10.
  • the radiator 6 is bypassed by controlling the bypass line 8, so that the coolant can be brought to operating temperature as quickly as possible.
  • bypass valve 10 is designed as a 3-way valve, in principle, of course, another valve arrangement with valves upstream and / or downstream of the radiator 6 can be used.
  • a heat accumulator 12 Downstream of the radiator 6, a heat accumulator 12 is provided according to the invention, the concrete structure of which is explained in a parallel patent application of the applicant.
  • a special feature of this heat accumulator 12 is that as Storage medium, the coolant itself is used, which is heated with charged heat storage 12 to a temperature above the operating temperature. This heating can be done for example via an electric heater 14.
  • This may for example be a heating cartridge or the like, which heats the storage medium - in the present case the coolant - in the heat accumulator 12. This is designed with a very good thermal insulation, which ensures that the stored heat is maintained even with a longer standstill of the vehicle.
  • a generator 15 may be provided which has a much higher power output than conventional generators and in cooperation with electrical energy storage, not shown, provides the required electrical energy.
  • a generator does not have to be driven directly by the internal combustion engine, but can be coupled to the outlet of a transmission, so that, for example, during "sailing" with the combustion engine disengaged, the generator 15 is driven via the wheels of the vehicle.
  • Such a circuit also makes it possible to drive the generator 15 when braking the vehicle via the recuperation of braking energy, so that the energy consumption for driving the vehicle can be considerably reduced.
  • the generator 15 supports the actual brake system during the braking process, so that the braking performance is improved.
  • the coolant circuit 1 further has a coolant pump 16, via which the coolant in the coolant circuit 1 is circulated.
  • the bypass valve 10 In a cold start of the internal combustion engine 2, the bypass valve 10 is turned on, so that the radiator 6 is bypassed.
  • the circulated by the coolant pump 16 coolant is brought by heat exchange or admixture with the coolant in the heat storage 12 very quickly to operating temperature, so accordingly Also, the internal combustion engine 2 reaches its operating temperature in a very short time and thus pollutant emissions and excessive wear can be prevented.
  • FIG. 2 shows a possibility over which the heat accumulator 12 can be decoupled from the coolant circuit.
  • the basic structure of in FIG. 2 shown coolant circuit corresponds to that of FIG. 1 , so that only the differences are discussed and, moreover, reference is made to the above statements.
  • a bypass line 18 is provided, which can be opened or closed via a bypass valve arrangement 20.
  • the bypass line 18 is actuated, the heat accumulator 12 is bypassed by the coolant circulated via the coolant pump 16 and is thus thermally decoupled from the coolant circuit.
  • About the heater 14 can then Coolant can be heated in the heat storage 12 to a storage temperature above the operating temperature.
  • the insulation of the heat accumulator 12 ensures that this storage temperature can be maintained over a comparatively long period without activation of the heater 14.
  • the stored in the heat storage 12 to a temperature higher than that permitted for the engine heated coolant is optionally mixed by suitable control of the bypass valve assembly 20 with "cold” coolant and fed to the engine 2 with operating temperature, so this is heated very quickly.
  • This mixing with "cold” coolant is advantageous to prevent stresses in the engine block.
  • the mixing ratio of the coolant from the heat accumulator 12 and the "cold” coolant may be adjusted via the bypass valve assembly 20.
  • a discharge of the heat accumulator 12 may for example also take place if, after phases of "sailing", rapid heating of the internal combustion engine 2 is required. After discharging the heat accumulator 12, this can be charged very quickly to its storage temperature by the above-explained control of the heater 14, in which case of course the bypass line 18 is turned on to thermally decouple the heat accumulator 12 from the coolant circuit.
  • bypass valve assembly 20 is exemplified as a 3-way valve, of course, a different valve arrangement, for example with valves at the entrance and at the output of the heat accumulator 12 can be used.
  • the valve assemblies 10 and 20 are preferably designed as electrically adjustable by the engine control valves.
  • a circulation pump 22 are provided, which is arranged in a circulation line 24, can be withdrawn via the coolant at an output 26 of the heat accumulator 12 and fed back to an input 28, so that a uniform heating of the heat accumulator 12 recorded coolant (storage medium) is ensured and the Formation of gas bubbles can be avoided by thermal overheating.
  • the circulation can also be taken to ensure that the coolant is mixed in the heat accumulator 12, for example via a kind of stirrer or by suitable flow guidance to avoid local overheating.
  • the heater 14 may additionally be provided with an external connection via which the heater 14 can be controlled, for example, overnight in a garage or the like, in order to charge the heat accumulator 12 so that it is ready for operation even during prolonged engine stoppage.
  • This external connection can be designed so that the heating system is supplied with energy directly or via the vehicle battery.
  • a coolant circuit of a drive for example an internal combustion engine, a hybrid drive or an electric drive, in which coolant can be brought to operating temperature via a heat accumulator.
  • coolant is used as the storage medium of the heat accumulator, this being heated to a storage temperature which is significantly above the operating temperature of the coolant circuit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
EP12166814.9A 2011-05-06 2012-05-04 Circuit de refroidissement Withdrawn EP2520779A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011050199A DE102011050199A1 (de) 2011-05-06 2011-05-06 Kühlmittelkreislauf

Publications (2)

Publication Number Publication Date
EP2520779A2 true EP2520779A2 (fr) 2012-11-07
EP2520779A3 EP2520779A3 (fr) 2014-03-12

Family

ID=46177241

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12166814.9A Withdrawn EP2520779A3 (fr) 2011-05-06 2012-05-04 Circuit de refroidissement

Country Status (2)

Country Link
EP (1) EP2520779A3 (fr)
DE (1) DE102011050199A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113266756A (zh) * 2021-04-29 2021-08-17 华能国际电力股份有限公司上安电厂 一种机组停机再循环冷却系统及方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015208100B4 (de) 2014-07-15 2022-03-24 Ford Global Technologies, Llc Kraftfahrzeug mit Wärmespeicher sowie Verfahren zum Betrieb eines Wärmespeichers in einem Kraftfahrzeug
DE102019129068A1 (de) * 2019-10-28 2021-04-29 Nidec Gpm Gmbh Elektrische Kühlmittelpumpe mit Heizelement

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0214517A2 (fr) 1985-09-12 1987-03-18 Behr GmbH & Co. Circuit de chauffage à accumulateur de chaleur pour véhicules à moteurs
EP0350528B1 (fr) 1988-07-15 1992-04-01 David & Baader DBK Spezialfabrik elektrischer Apparate und Heizwiderstände GmbH Radiateur
DE4235883A1 (de) 1992-10-23 1994-04-28 Daimler Benz Ag Wärmepuffer für den Kühlkreislauf von flüssigkeitsgekühlten Brennkraftmaschinen
EP0791497A2 (fr) 1996-02-25 1997-08-27 Volkswagen Aktiengesellschaft Dispositif de chauffage pour véhicule
DE10344018A1 (de) 2003-09-15 2005-06-23 Behr Thermot-Tronik Gmbh Verfahren zum Temperieren eines Verbrennungsmotors und Kühlsystem für einen Verbennungsmotor
DE102008015283B3 (de) 2008-03-20 2009-09-03 Continental Automotive Gmbh Verfahren und Steuervorrichtung zum Starten einer Brennkraftmaschine, welche eine Heizeinrichtung zum Erhitzen einer Kühlflüssigkeit aufweist

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4040196A1 (de) * 1990-12-15 1992-06-17 Webasto Ag Fahrzeugtechnik Fahrzeugheizungsanlage
SE9103703D0 (sv) * 1991-12-13 1991-12-13 Ismo Laine Oy Ferrokonsult Ab Kylsystem foer foerbraenningsmotordrivet fordon
DE4241384A1 (en) * 1991-12-20 1993-06-24 Volkswagen Ag Vehicular heater with storage for power unit contact - incorporates jet pump delivering liq. with heat recovered from exhaust to heat exchanger in passenger space
DE19530378C1 (de) * 1995-08-18 1997-03-06 Laengerer & Reich Gmbh & Co Wärmespeicher für ein Kraftfahrzeug
DE19845398C1 (de) * 1998-10-02 2000-03-16 Daimler Chrysler Ag Heizung für Kraftfahrzeuge
JP2004360544A (ja) * 2003-06-04 2004-12-24 Mitsubishi Motors Corp 冷却水温制御装置
DE102006037760A1 (de) * 2006-08-11 2008-02-14 Kali-Umwelttechnik Sondershausen Gmbh Wärmespeicher mit hoher Entnahmeleistung
FR2934201A3 (fr) * 2008-07-28 2010-01-29 Renault Sas Dispositif pour le chauffage de l'air d'un habitacle d'un vehicule automobile a moteur electrique et dispositif pour sa mise en oeuvre
WO2010087024A1 (fr) * 2009-02-02 2010-08-05 トヨタ自動車 株式会社 Dispositif de commande de véhicule hybride
DE102010012464A1 (de) * 2010-03-24 2011-09-29 Audi Ag Heizeinrichtung zum Beheizen eines Fahrzeuginnenraums eines Fahrzeugs
DE102010003688A1 (de) * 2010-04-07 2011-10-13 Dbk David + Baader Gmbh Kühlmittelkreislauf, Verfahren zum Steuern eines Kühlmittelkreislaufs und Latentwärmespeicher

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0214517A2 (fr) 1985-09-12 1987-03-18 Behr GmbH & Co. Circuit de chauffage à accumulateur de chaleur pour véhicules à moteurs
EP0350528B1 (fr) 1988-07-15 1992-04-01 David & Baader DBK Spezialfabrik elektrischer Apparate und Heizwiderstände GmbH Radiateur
DE4235883A1 (de) 1992-10-23 1994-04-28 Daimler Benz Ag Wärmepuffer für den Kühlkreislauf von flüssigkeitsgekühlten Brennkraftmaschinen
EP0791497A2 (fr) 1996-02-25 1997-08-27 Volkswagen Aktiengesellschaft Dispositif de chauffage pour véhicule
DE10344018A1 (de) 2003-09-15 2005-06-23 Behr Thermot-Tronik Gmbh Verfahren zum Temperieren eines Verbrennungsmotors und Kühlsystem für einen Verbennungsmotor
DE102008015283B3 (de) 2008-03-20 2009-09-03 Continental Automotive Gmbh Verfahren und Steuervorrichtung zum Starten einer Brennkraftmaschine, welche eine Heizeinrichtung zum Erhitzen einer Kühlflüssigkeit aufweist

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113266756A (zh) * 2021-04-29 2021-08-17 华能国际电力股份有限公司上安电厂 一种机组停机再循环冷却系统及方法

Also Published As

Publication number Publication date
EP2520779A3 (fr) 2014-03-12
DE102011050199A1 (de) 2012-11-08

Similar Documents

Publication Publication Date Title
DE102010014752A1 (de) Kühlanordnung für ein Fahrzeug mit elektrischem Antrieb und Verfahren zum Betreiben eines solchen Fahrzeugs
DE102017211303B4 (de) Wärmespeicheranordnung für eine Fahrzeugbatterie und Verfahren zu deren Betrieb
WO2015091969A1 (fr) Gestion thermique pour un véhicule électrique ou hybride ainsi que procédé pour le conditionnement de l'habitacle d'un tel véhicule automobile
DE102012024080A1 (de) Fahrzeug mit Elektromotor
DE102009043316A1 (de) Verfahren zur Steuerung der Innenraumtemperatur eines elektrisch betriebenen Fahrzeugs und Klimaanlagensystem
DE102009048719B4 (de) Hilfsaggregat für elektromotorisch betriebene Fahrzeuge
DE102010000342A1 (de) Vorrichtung zur Nutzung der von einer Komponente eines Plug-In-Hybridelektrofahrzeuges erzeugten Wärme
DE102012218191A1 (de) Wärmetransportanordnung und Verfahren zum Wärmeaustausch in einem Kraftfahrzeug mittels der Wärmetransportanordnung
DE102012019005A1 (de) Thermisches Konditionieren eines, insbesondere einen Elektroantrieb aufweisenden Kraftfahrzeugs
DE102011050200A1 (de) Wärmespeicher
WO2017092853A1 (fr) Agencement de piles à combustible, procédé pour faire fonctionner un tel agencement de piles à combustible et utilisation d'un tel agencement de piles à combustible
DE102012103131B4 (de) Kraftfahrzeug mit einer temperierbaren Fahrzeugbatterie
EP3470287B1 (fr) Dispositif de climatisation d'un véhicule ferroviaire
EP2345803B1 (fr) Circuit de refroidissement d'un moteur à combustion interne et procédé de travail pour le fonctionnement d'un circuit de refroidissement
EP2143573B1 (fr) Dispositif de chauffage pour véhicule automobile
EP2520779A2 (fr) Circuit de refroidissement
DE102014215891A1 (de) Wärmemanagement-System und Verfahren zum Betrieb eines solchen
DE102012014110A1 (de) Brennstoffzellensystem
DE102015106382A1 (de) Batterietemperierungsvorrichtung sowie deren Verwendung, Batteriesystem und Fahrzeug mit einem solchen, sowie Verfahren zum Heizen und/oder Kühlen einer Batterie
EP2740173A1 (fr) Système de pile à combustible
DE102010003688A1 (de) Kühlmittelkreislauf, Verfahren zum Steuern eines Kühlmittelkreislaufs und Latentwärmespeicher
DE102012222082A1 (de) Vorrichtung und Verfahren zur Abwärmenutzung einer Brennkraftmaschine
DE102016213619A1 (de) Verfahren zum betrieb eines klimasystems sowie klimasystem
DE10142923A1 (de) Hybridantriebsvorrichtung und Verfahren zum Betreiben der Hybridantriebsvorrichtung
DE102016112232B4 (de) Heißgasnutzungsvorrichtung, Fahrzeug und Verfahren zum Betreiben einer Heißgasnutzungsvorrichtung

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: DBK DAVID + BAADER GMBH

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

RIC1 Information provided on ipc code assigned before grant

Ipc: F01P 11/20 20060101AFI20140205BHEP

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20140913