EP2039902A2 - Dispositif de réglage du débit d'un moyen de refroidissement dans un circuit de refroidissement et circuit de refroidissement - Google Patents

Dispositif de réglage du débit d'un moyen de refroidissement dans un circuit de refroidissement et circuit de refroidissement Download PDF

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Publication number
EP2039902A2
EP2039902A2 EP08159078A EP08159078A EP2039902A2 EP 2039902 A2 EP2039902 A2 EP 2039902A2 EP 08159078 A EP08159078 A EP 08159078A EP 08159078 A EP08159078 A EP 08159078A EP 2039902 A2 EP2039902 A2 EP 2039902A2
Authority
EP
European Patent Office
Prior art keywords
coolant
section
opening cross
temperature
meta
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Withdrawn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
EP08159078A
Other languages
German (de)
English (en)
Other versions
EP2039902A3 (fr
Inventor
Peter Altenhofen
Ferdinand Mittner
Marco Borchert
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.)
Geiger Automotive GmbH
Original Assignee
Geiger Automotive GmbH
Geiger Technik 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 Geiger Automotive GmbH, Geiger Technik GmbH filed Critical Geiger Automotive GmbH
Publication of EP2039902A2 publication Critical patent/EP2039902A2/fr
Publication of EP2039902A3 publication Critical patent/EP2039902A3/fr
Withdrawn legal-status Critical Current

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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
    • F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
    • F01P11/029—Expansion reservoirs
    • 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
    • F01P2007/146—Controlling of coolant flow the coolant being liquid using valves

Definitions

  • the invention relates to a device for adjusting the flow of a coolant in a cooling circuit, in particular for controlling the coolant flow through a cooling water expansion tank, and a coolant circuit, in particular in a motor vehicle.
  • the invention relates to a fluid system, comprising at least one conduit having a first opening cross section for the passage of a fluid, and a fluid system, comprising a conduit system having a first opening cross section for the passage of a fluid, and a second opening cross section.
  • cooling water circuits of motor vehiclesdebergaus In cooling water circuits of motor vehiclesdebergaus Extracts so as a buffer volume of air volume changes of the coolant, for example, as a result of temperature changes, different hose expansions, etc., compensate. Furthermore, cooling water expansion tanks also serve to remove air accumulations from the cooling liquid, since the efficiency of the cooling system would be considerably worsened by air accumulation in the cooling liquid.
  • bimetallic or wax elements are used, for example, which adjust the flow rate relatively continuously.
  • wax elements are relatively expensive and expensive.
  • the cooling water located in the cooling water expansion tank passes only after reaching a certain pressure in the cooling circuit in the main cooling water circuit.
  • the pressure dynamics also depends on the engine load in the warm-up phase, it can not be ruled out in the pressure control that the cooling water located in the cooling water expansion tank reaches the cooling circuit already before reaching the operating temperature due to a high pressure.
  • the present invention is therefore based on the object of specifying a line system for liquid media for a coolant circuit with a coolant expansion tank, which has a space-saving, easy to install and suitable for the purpose of warming up an engine flow adjustment.
  • the inventive device for adjusting the flow of a coolant in a cooling circuit in particular for controlling the coolant flow through a cooling water expansion tank, has at least one first (meta) stable state, the corresponds to a low flow, and at least a second (meta) stable state, which corresponds to a high flow, wherein the device is designed such that it is at a transition of the temperature of the coolant from a first temperature range to a second temperature range of the first (meta) stable state in the second (meta) stable state passes.
  • (meta) stable states are meant stable states and metastable states between which the device can change as soon as a certain amount of temperature change occurs.
  • a bistable element can be used, but it is also possible to provide more than two (meta) stable states, if this is desired for the volume flow control.
  • the device comprises at least one component which, depending on the temperature of the coolant, assumes either a first geometry which corresponds to the first (meta) stable state or a second geometry which corresponds to the second (meta) stable state.
  • a component preferably in the inflow region of thedewasseraus.
  • the geometry of the component which is arranged in the flow area, determines the flow area.
  • the device automatically changes the geometry due to the effect of temperature.
  • the stepwise change in geometry at a temperature impact is intrinsic to the material and the geometric design of the device.
  • the component can assume its geometry as a function of the temperature of the coolant flowing through it. In this way, a direct influence of the temperature of the coolant is ensured on the component.
  • the device may be wholly or partly made of bimetal.
  • the device may also consist wholly or partly of a shape memory material (shape memory alloys FGL).
  • the device preferably has at least one first opening cross section for the flow or for the passage of cooling medium past the device in the first (meta) stable state. Since thedewasseraus GmbH,s employer is located in a secondary cooling circuit and the coolant from the main circuit can not get into the secondary circuit, it comes in the flow-preventing state of the temperature-sensitive component to temperature differences in the main circuit and the secondary circuit. Since the flow through the cooling water expansion tank is to be set / controlled by the device according to the invention as a function of the temperature in the main cooling circuit, it is advantageous to configure the device according to the invention in such a way that a small coolant flow is made possible even in the flow-preventing state.
  • the temperature difference between the main cooling circuit and the temperature applied to the component according to the invention can be considerably reduced, so that a more accurate adjustment is made possible.
  • the adjustment thus takes place with the aid of a leakage current or a bypass current.
  • the bypass can therefore in principle e.g. be provided as opening (s) in or on the device.
  • the device has at least one second opening cross-section for the flow or for the passage of cooling medium past the device in the second (meta) stable state.
  • the component switches between the states with different cross-sections by their special design, their structure, eg material selection, etc. Due to the shape and structure of the device, a desired opening and closing characteristic as a function of the temperature can be realized.
  • the second opening cross section is larger, in particular substantially larger, than the first opening cross section.
  • the first opening area may be zero or nearly zero.
  • the transition from the first (meta) stable state to the second (meta) stable state, and possibly vice versa is preferably non-linear as a function of the temperature of the coolant, that is to say abruptly after exceeding a certain activation potential by the temperature difference.
  • the different states can also be "approached" in a kind of hysteresis.
  • a fluid system according to the invention comprises at least one line with a first opening cross section for the passage of a fluid, and at least one device as described above, which is arranged for closing and / or for releasing the first opening cross section.
  • the fluid system has at least one second opening cross section for the passage of a fluid in addition to the first opening cross section, wherein the second opening cross section is unlocked, regardless of the temperature of the fluid.
  • the fluid transport from an area in front of the device and behind the device can thus also take place via a bypass which is always always unlocked.
  • An inventive coolant circuit in particular in a motor vehicle, comprises at least one device as described.
  • the device By using the device, an optimal, “tailored” characteristic for the limitation of a fluid flow can be realized.
  • a discrete setting between two or more opening states is made possible.
  • the coolant circuit preferably comprises at least one
  • the device is arranged in particular in the coolant expansion tank.
  • a fluid system according to the invention comprises a line system having a first opening cross section for the passage of a fluid, and a second opening cross section, wherein the fluid system comprises a device as described above, which is arranged for closing and / or releasing the second opening cross section in addition to the first opening cross section.
  • the device thus releases a bypass to increase the flow rate from one part of the system to the other part of the system.
  • the system can be used, for example, in conjunction with an additional heat exchanger for heating, but also in conjunction with all other possible applications in which thermal management is necessary.
  • the device is arranged in the inflow area and / or in the outflow area of the coolant compensation tank.
  • FIG. 1 shows a cross section through a fluid line 1, comprising a channel 2 for the passage of a fluid and a closure element 3 according to the invention, the Flow volume of the fluid through the channel 2 sets.
  • the closure element 3 is fastened by means of a suitable attachment 4.
  • a bypass 5 ensures that a certain volume flow always flows from the line area in front of the closure element 3 into the line area behind the closure element 3, in order to transport temperature changes in the fluid of a system (for example a cooling water circuit) to the closure element 3.
  • the closure element 3 changes, as in the FIGS. 2a and 2b represented its geometry as a function of temperature.
  • the closure element 3 is shown in a first state at a temperature below a first threshold temperature T g1 , which corresponds to a practically completely closed state.
  • the closure element 3 is shown in a second state at a temperature above a second threshold temperature T g2 (T g2 greater than or equal to T g1 ), which corresponds to a virtually maximum open state.
  • the closure element 3 is formed, for example, as a bimetallic element or from a shape memory material.
  • the material changes its geometry depending on the temperature. In the embodiment according to the FIGS. 2a and 2b This is indicated by a change in position s of the lower edge of the element 3 in the second state relative to its position in the first state.
  • FIG. 3 shows a graph indicating the opening characteristics of a conventional (line I) and a closure element according to the invention 3 (line II).
  • the variable s as defined above, is shown by way of example as a geometric change relative to the temperature T.
  • a conventional bimetal element bends to a certain characteristic, for example, approximately linearly with the temperature (see. FIG. 3 , Line I), while a closure element 3 is formed according to the invention such that in a first state at a temperature below a threshold temperature Tg a practically completely closed state s 1 (s 1 is about zero) is realized while immediately above the threshold temperature Tg a maximum open state s 2 is set (see. FIG. 3 , Line II).
  • This nonlinear behavior with practically two discrete metastable states can be achieved, for example, by a suitable contour 6 (cf. FIG. 2 ) of the surface of the closure element 3 can be adjusted. Accordingly, the surface structure 6 is designed such that the shape of the element changes abruptly with temperature.
  • FIG. 5 shows a cooling water circuit for cooling a motor 9, which comprises a heat exchanger 7 and an expansion tank 13 for cooling fluid and an engine cooling circuit for cooling a motor 9.
  • the cooling liquid is moved by a water pump 11 for the engine cooling circuit in this.
  • thermostat 10 which controls the flow of coolant from the engine cooling circuit via a line 8 in the heat exchanger 7.
  • the thermostat 10 can in any case flow a certain leakage current through the line 8 into the heat exchanger 7.
  • the thermostat 10 opens according to a certain characteristic with the temperature rise, so that the flow of cooling fluid through the conduit 8 in the heat exchanger 7 can increase.
  • a vent line 14 leads from the heat exchanger 7 in the expansion tank 13.
  • An engine vent line 15 opens, starting from the engine cooling circuit, in the vent line fourteenth
  • the flowing through the vent line 14 fluid flow is limited by a throttle valve 12, which is a closure element 3, as in connection with the FIGS. 1 to 3 described includes.
  • the closure element 3 forms a flow restriction for flowing through the vent line 14 fluid.
  • the thermostat 10 opens so that warmer coolant can enter the heat exchanger 7.
  • a fluid flows in the form of a leakage current (by the in the FIG. 1 shown bypass 5 can flow).
  • This leakage current conveys a fluid in the direction of throttle valve 12 and closure element 3.
  • T g a certain limit temperature of a practically closed state
  • FIG. 2b a maximum open state
  • the invention is not limited to the illustrated embodiments, which merely exemplify design features.
  • the invention is not limited to the rectangular design, i. H. Any other geometries can be realized.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
EP08159078A 2007-06-27 2008-06-26 Dispositif de réglage du débit d'un moyen de refroidissement dans un circuit de refroidissement et circuit de refroidissement Withdrawn EP2039902A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007029732 2007-06-27

Publications (2)

Publication Number Publication Date
EP2039902A2 true EP2039902A2 (fr) 2009-03-25
EP2039902A3 EP2039902A3 (fr) 2010-03-17

Family

ID=39916310

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08159078A Withdrawn EP2039902A3 (fr) 2007-06-27 2008-06-26 Dispositif de réglage du débit d'un moyen de refroidissement dans un circuit de refroidissement et circuit de refroidissement

Country Status (1)

Country Link
EP (1) EP2039902A3 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010017766A1 (de) * 2010-07-06 2012-01-12 Ford Global Technologies, Llc. Kühlanordnung für Brennkraftmaschinen
DE102011002562A1 (de) * 2011-01-12 2012-07-12 Ford Global Technologies, Llc Aufgeladene flüssigkeitsgekühlte Brennkraftmaschine
WO2014124822A1 (fr) * 2013-02-12 2014-08-21 Thyssenkrupp Steel Europe Ag Composant et procédé de fabrication d'un composant
DE102013102353A1 (de) 2013-03-08 2014-09-11 Thyssenkrupp Steel Europe Ag Temperaturgesteuertes Umlenkmittel
DE102013012754B3 (de) * 2013-07-31 2015-01-08 Audi Ag Ausgleichbehälter für einen Fluidkreislauf sowie Verfahren zum Betreiben eines Ausgleichsbehälters

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE510960C (de) * 1928-09-26 1930-10-24 Willy Brandegger Dipl Ing Einrichtung zur Durchflussregelung in Rohrleitungen
DE951692C (de) * 1954-05-01 1956-10-31 Smith & Sons Ltd S Thermostatisch gesteuerte Ventilanordnung, insbesondere fuer Kuehlanlagen von Brennkraftmaschinen
JPS56143877A (en) * 1980-04-10 1981-11-09 Nippon Radiator Co Ltd Thermostat for vehicle
FR2713361A1 (fr) * 1993-12-06 1995-06-09 Vincent Eric Régulateur thermostatique de débit en matériau à mémoire de forme.
DE19607638C1 (de) * 1996-02-29 1997-06-19 Porsche Ag Kühlkreislauf einer Brennkraftmaschine
DE10011143B4 (de) * 2000-03-07 2013-09-19 Bayerische Motoren Werke Aktiengesellschaft Flüssigkeitsgekühlte Brennkraftmaschine mit einem Zweikreiskühlsystem

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010017766A1 (de) * 2010-07-06 2012-01-12 Ford Global Technologies, Llc. Kühlanordnung für Brennkraftmaschinen
DE102010017766B4 (de) * 2010-07-06 2013-11-14 Ford Global Technologies, Llc. Kühlanordnung für Brennkraftmaschinen
US8851026B2 (en) 2010-07-06 2014-10-07 Ford Global Technologies, Llc Cooling arrangement for internal combustion engines
DE102011002562A1 (de) * 2011-01-12 2012-07-12 Ford Global Technologies, Llc Aufgeladene flüssigkeitsgekühlte Brennkraftmaschine
US8813491B2 (en) 2011-01-12 2014-08-26 Ford Global Technologies, Llc Supercharged liquid-cooled internal combustion engine
DE102011002562B4 (de) * 2011-01-12 2020-02-06 Ford Global Technologies, Llc Aufgeladene flüssigkeitsgekühlte Brennkraftmaschine
WO2014124822A1 (fr) * 2013-02-12 2014-08-21 Thyssenkrupp Steel Europe Ag Composant et procédé de fabrication d'un composant
DE102013102353A1 (de) 2013-03-08 2014-09-11 Thyssenkrupp Steel Europe Ag Temperaturgesteuertes Umlenkmittel
DE102013012754B3 (de) * 2013-07-31 2015-01-08 Audi Ag Ausgleichbehälter für einen Fluidkreislauf sowie Verfahren zum Betreiben eines Ausgleichsbehälters

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Publication number Publication date
EP2039902A3 (fr) 2010-03-17

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