EP0861368A1 - Einrichtung und verfahren zum kühlen und vorwärmen - Google Patents
Einrichtung und verfahren zum kühlen und vorwärmenInfo
- Publication number
- EP0861368A1 EP0861368A1 EP97940120A EP97940120A EP0861368A1 EP 0861368 A1 EP0861368 A1 EP 0861368A1 EP 97940120 A EP97940120 A EP 97940120A EP 97940120 A EP97940120 A EP 97940120A EP 0861368 A1 EP0861368 A1 EP 0861368A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cooling
- flow
- water
- heat exchanger
- temperature
- 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.)
- Granted
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 71
- 238000000034 method Methods 0.000 title claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 79
- 239000003921 oil Substances 0.000 claims abstract description 40
- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- 238000002485 combustion reaction Methods 0.000 claims abstract description 19
- 239000002826 coolant Substances 0.000 claims abstract description 19
- 239000012208 gear oil Substances 0.000 claims abstract description 10
- 239000000498 cooling water Substances 0.000 claims description 12
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 238000005192 partition Methods 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims 2
- 230000005611 electricity Effects 0.000 claims 1
- 238000007789 sealing Methods 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 241000969780 Eleotris picta Species 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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
- F01P3/00—Liquid cooling
- F01P3/20—Cooling circuits not specific to a single part of engine or machine
-
- 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
- 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
- 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
- F01P3/00—Liquid cooling
- F01P3/18—Arrangements or mounting of liquid-to-air heat-exchangers
- F01P2003/182—Arrangements or mounting of liquid-to-air heat-exchangers with multiple heat-exchangers
-
- 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
-
- 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
-
- 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
- F01P2060/00—Cooling circuits using auxiliaries
- F01P2060/04—Lubricant cooler
- F01P2060/045—Lubricant cooler for transmissions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
- F28F27/02—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels
Definitions
- the invention relates to a device for cooling and preheating, in particular gear oil, an internal combustion engine. with an expansion tank, with at least one water cooler. which can be switched into the cooling circuit by means of a motor thermostat when a predetermined temperature is reached and with a water / oil heat exchanger.
- the invention further relates to a method for cooling and preheating. Oil cooling is often carried out by means of oil / air coolers using a thermostat which responds to corresponding oil temperatures.
- the oil / water heat exchanger integrated in the normal water circuit for transmission oil cooling is used, which is often installed in a water box of the water cow
- 25 lers are arranged enclosed, but can also be provided separately. In this solution, only the cooling but not the preheating or heating is achieved
- the object of the invention is to provide an efficient, compact and inexpensive device for cooling and preheating operating materials, in particular gear oil, for internal combustion engines, with which both drafty warming of the gear oil in the starting phase of the engine Without significantly impairing the heating of the passenger compartment, more efficient oil cooling is also possible without having to use additional air-cooled or water-cooled oil coolers. Furthermore, an associated method for cooling and heating is to be specified. This object is achieved according to the invention with the features specified in the claims
- the device according to the invention has only a single water / oil heat exchanger which can be used both for heating and for cooling operating materials, in particular gear oil.
- a valve unit is provided which controls the flow of the heat exchanger mentioned.
- the heat exchanger receives a cooling water flow which is branched off from the main cooling circuit which is quickly warmed up by the operation of the internal combustion engine.
- this amount is so small that the warming up of the internal combustion engine itself and the heating of the passenger compartment are hardly affected.
- the supply flow is essentially formed from the low-temperature range of the water cooler by means of the same valve unit in the secondary coolant flow.
- the water / oil heat exchanger receives a cooling water flow which is about 10 ° C. lower, as a result of which the temperature difference oil to water increases and the cooling effect is improved the separate low-temperature cooler allows even higher temperature differences to be achieved.
- a space-saving arrangement that is independent of the water cooler.
- At a temperature of around 80 to 90 ° C there is a transition area between the heating phase and the cooling phase, in which the flow of the heat exchanger from the expansion tank with that from the low temperature range Water cooler or alternatively mixed from the separate low temperature cooler.
- the oil temperature is optimized by adding a flow from the low temperature range of the water cooler or from the separate low temperature cooler to a minimal continuous flow from the expansion tank, i.e. a flow of higher temperature. Too low oil temperatures with their negative consequences, as they are in particular with oil / air cooling over large driving ranges are avoided.
- the low temperature range of the water cooler is realized, as is known per se, by arranging at least one partition in at least one water tank, which divides part of the water flowing through the water cooler into a u- shaped or meandering flow through the water cooler.
- an additional connection is also provided, which is connected to the flow channels to the oil-water heat exchanger via a valve unit Flow channels for the heat exchanger are formed, one of which is switchable in connection with the low temperature range of the water cooler or with the separate low temperature cooler and the other is in connection with the expansion tank.
- the housing which includes the valve unit, preferably consists of an upper and a lower receptacle, which are joined together by means of a quick-plug connection.
- the upper receptacle is molded directly into the bottom area of the surge tank and the lower receptacle forms a single plastic injection molded part with the flow channels of the heat exchanger.
- the return channel of the heat exchanger and the return connection of the expansion tank and the return pipe leading to the coolant pump are also designed as a uniform injection molded component. All of these features mean that a compact design is achieved, since the components mentioned are to be fastened in the immediate vicinity, for example to the fan hood enclosing the water cooler. Lines requiring space are therefore unnecessary. All media connections are designed as quick-plug connections, which have a favorable effect on assembly and disassembly
- Claims 13 to 16 are directed to a method for cooling and preheating, with which the efficiency of the cooling and preheating is to be improved. It has proven to be particularly effective if the switching point of the valve unit to cooling operation is negligible, approximately 5 ° C. below the switching point of the engine main thermostat The overall conclusion is that the dynamic control process cooler location or by to ischung w ä poorer Kuhlwassers over the entire control range in bes t he i se We affected is
- FIG. 1 shows a schematic circuit diagram of the cooling phase of a transmission oil cooler.
- FIG. 2 shows a schematic circuit diagram of the heating or preheating phase.
- FIG. 3 shows a schematic circuit diagram in a transition phase
- Fig. 4 water cooler (schematic) which has a partition in a water tank to form a low temperature range.
- FIG. 6 housing forming receiving socket as Einzelhei t
- FIG. 7 schematic circuit diagram of a separate low-temperature radiator in Figs 1 b i s 3 of the prince is shown i Pielle Kuhlwasserniklauf as beispielswe.se to C ooling an internal combustion engine 17 in a vehicle can be found.
- Components of the circuit are the water block 4, the Break fluid 2, the motor thermostat 9 and the Kuhlstoffpumpe 8
- the internal combustion engine 17 heats the cooling water in a short time.
- the W ä rmeenergie of Kuhlwassers can be used for example for the Au l heating of the passenger ⁇ space, after which in the present case will not be discussed st
- a single oil / water heat exchanger 5 for example, a Getriebeolkuhler, integrated whose forward stream 1 by means of a valve unit 3 adjustable i st.
- the valve unit 3 has a terminal for Niede ⁇ emperatur Scheme 14 of the water ⁇ ready kuhlers 4 and a further connection to Break fluid 2 in the Kuhlphase, as shown in Fig.
- the motor ⁇ has thermostat 9 the short path bere i ts asksper ⁇ so that the main cooling circuit 12 proceeds through the water block 4 and ü ck to 8 Kuhlstoffpumpe also, since the valve unit has selectsper ⁇ the way to Break fluid 2 3 - except for a small constant current - is the flow stream 1 of the heat exchanger 5 essentially from the low temperature range 14 of the water cooler 4.
- This low temperature range 14 allows the water temperature to be further cooled, for example by 10 ° C., which is advantageous for the transmission oil cooling.
- FIG. 4 shows how this low-temperature range is formed, which will be discussed in more detail below.
- the valve unit 3 has opened the inlet on the left in the figure and closed the right inlet leading to the low temperature range! 4. A part of the cooling water quickly warmed up by the internal combustion engine 17 is thus provided for the rapid heating up of the transmission oil.
- a transition range has been established, as shown in FIG. 3.
- the flow stream 1 of the heat exchanger 5 comes both from the expansion tank 2 and from the low temperature range 14, which in turn is useful for optimizing the oil temperature.
- Another operating situation not shown, occurs when the temperature continues to rise, even if the engine thermostat 9 is already partially open, the low temperature range 14 then only being flowed through by a subset of the water flowing through the water cooler 4, as is in principle also shown in FIG 1 is recognizable.
- the schematic water cooler 4 is shown in FIG. 4.
- a low temperature range 14 is separated by using a partition 16 in the left water box 15, which causes the water or part of the water to flow through the water cooler 4 again in the opposite direction and thereby cool down by an additional amount.
- the main coolant flow 12 or a part thereof enters the water cooler 4 at the top left at the inlet connection 22 and leaves it after flowing through on the right side at the outlet connection 23 according to the arrow shown.
- the portion flowing through the low-temperature region 14 forms the secondary coolant flow 13, which leaves the water cooler 4 at the bottom left in order to enter the flow channel designated 10, which leads to the heat exchanger 5.
- a connection piece 24 for connection to the flow channel 10 is shown in a schematic form.
- the flow channel 10 is also shown in FIGS. 5 and 6, which show an expansion tank 2 with a schematic valve unit 3 located in the bottom 21.
- the valve unit 3 is located in an insert housing 19, which consists of a lower 18 and an upper receptacle 20. These sockets are preferably made of plastic.
- the lower receiving nozzle 18 forms a single component together with the flow channel 10, which comes from the low temperature region 14 and the flow channel 11, which leads from the receiving nozzle 18 to the flow connection of the heat exchanger 5.
- the return channel 28 from the heat exchanger 5 with the return connection 29 of the expansion tank 2 and the return pipe 30, which represents the connection to the return to the cooling water pump 8, forms a single injection molded part made of plastic.
- the arrows drawn in FIG. 5 indicate the flow through the expansion tank 2 and the channels 10; 1 1; 28; 29 on. During the heating phase, the part of the area made clear with the upper horizontal arrow occurs
- the cooling water comes from the low-temperature region 14 via the flow channel 10, into the flow channel 11, into the transmission oil cooler 5 and leaves it as described.
- the flow stream 1 is controlled by means of the valve unit 3 so that part of the cooling water is fed via the channel 10 from the low-temperature area 14 and another part from the expansion tank 2 into the flow channel 11.
- 6 shows the already described essential details of the housing 19 accommodating the valve unit 3, the valve unit 3 itself, for the sake of clarity, not being drawn but merely indicated by the reference number 3.
- the two parts of the housing 19, the lower receptacle 18 and the upper receptacle 20, which is part of the expansion tank 2, are sealed to the outside by means of a suitable seal 32.
- the connection is made through slots or groove 31 on the wall, in which there is a spring clip, which was not shown in the drawing.
- the arrows indicate the flow of the water.
- This illustration also shows the compact design which dispenses with separate lines, in which the lower receiving connector 18 and the flow channels 10 and 11 are designed as a single injection-molded part. Since the upper receptacle 20, as already described, is formed directly in the bottom 21 of the expansion tank 2, the number of individual parts is extremely small, which contributes to ease of installation.
- FIG. 7 shows the pure cooling phase in which the main coolant flow 12 is passed through the water cooler 4a.
- the low-temperature cooler 14a is connected downstream of the water cooler 4a and lies parallel to it. The water flowing into this cooler 14a reaches the valve unit 3 and from there into the gear oil cooler 5, where efficient oil cooling is possible due to the large temperature difference.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19637817 | 1996-09-17 | ||
DE19637817A DE19637817A1 (de) | 1996-09-17 | 1996-09-17 | Einrichtung und Verfahren zum Kühlen und Vorwärmen |
PCT/EP1997/004604 WO1998012425A1 (de) | 1996-09-17 | 1997-08-23 | Einrichtung und verfahren zum kühlen und vorwärmen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0861368A1 true EP0861368A1 (de) | 1998-09-02 |
EP0861368B1 EP0861368B1 (de) | 2000-04-12 |
Family
ID=7805856
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97940120A Expired - Lifetime EP0861368B1 (de) | 1996-09-17 | 1997-08-23 | Kühlkreislauf einer brennkraftmaschine sowie verfahren zum betrieb des kühlkreislaufes |
Country Status (5)
Country | Link |
---|---|
US (1) | US6196168B1 (de) |
EP (1) | EP0861368B1 (de) |
DE (2) | DE19637817A1 (de) |
ES (1) | ES2146115T3 (de) |
WO (1) | WO1998012425A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017219939A1 (de) | 2017-11-09 | 2019-05-09 | Volkswagen Aktiengesellschaft | Kühlkreislauf für eine Antriebseinheit eines Kraftfahrzeuges |
DE102018202476A1 (de) | 2018-02-19 | 2019-08-22 | Volkswagen Aktiengesellschaft | Kühlkreislauf für eine Antriebseinheit eines Kraftfahrzeuges |
Families Citing this family (70)
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DE19715324A1 (de) | 1997-04-12 | 1998-10-15 | Bayerische Motoren Werke Ag | Wärmetauscher für flüssige Wärmetauschmittel |
DE19942727A1 (de) * | 1999-09-08 | 2001-03-15 | Zahnradfabrik Friedrichshafen | Kühlkreislauf |
DE10019029C5 (de) * | 2000-04-18 | 2017-11-23 | Mahle International Gmbh | Vorrichtung zum Kühlen und/oder Temperieren von Öl |
US6427640B1 (en) * | 2000-10-11 | 2002-08-06 | Ford Global Tech., Inc. | System and method for heating vehicle fluids |
FR2815402B1 (fr) * | 2000-10-13 | 2006-07-07 | Renault | Dispositif, systeme et procede de refroidissement d'un fluide caloporteur |
FR2815401A1 (fr) * | 2000-10-13 | 2002-04-19 | Renault | Dispositif, systeme et procede de refroidissement d'un fluide caloporteur |
FR2815299B1 (fr) * | 2000-10-13 | 2003-01-24 | Renault | Systeme et procede de refroidissement pour vehicule a propulsion hybride |
DE10065002A1 (de) * | 2000-12-23 | 2002-07-11 | Bosch Gmbh Robert | Anordnung und Verfahren zum Kühlen |
WO2002079621A1 (fr) * | 2001-01-05 | 2002-10-10 | Renault S.A.S | Dispositif, systeme et procede de refroidissement d'un fluide caloporteur |
DE10202613A1 (de) * | 2002-01-24 | 2003-07-31 | Zahnradfabrik Friedrichshafen | Vorrichtung zum Kühlen eines Getriebes |
DE60325436D1 (de) * | 2002-03-27 | 2009-02-05 | Calsonic Kansei Corp | Kühlungseinrichtung einer wassergekühlten Brennkraftmascine und Getriebeölkühlermodul |
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DE10301564A1 (de) | 2003-01-16 | 2004-08-12 | Behr Gmbh & Co. Kg | Kühlkreislauf einer Brennkraftmaschine mit Niedertemperaturkühler |
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FR2852678B1 (fr) * | 2003-03-21 | 2005-07-15 | Valeo Thermique Moteur Sa | Systeme de refroidissement a basse temperature d'un equipement, notamment d'un equipement de vehicule automobile, et echangeurs de chaleur associes |
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DE102006048527B4 (de) * | 2006-10-13 | 2016-12-22 | Volkswagen Ag | Kühlkreislauf für eine Brennkraftmaschine |
DE102006054223A1 (de) * | 2006-11-15 | 2008-05-21 | Behr Gmbh & Co. Kg | Kühlsystem für ein Kraftfahrzeug |
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-
1997
- 1997-08-23 US US09/068,815 patent/US6196168B1/en not_active Expired - Lifetime
- 1997-08-23 ES ES97940120T patent/ES2146115T3/es not_active Expired - Lifetime
- 1997-08-23 DE DE59701435T patent/DE59701435D1/de not_active Expired - Lifetime
- 1997-08-23 WO PCT/EP1997/004604 patent/WO1998012425A1/de active IP Right Grant
- 1997-08-23 EP EP97940120A patent/EP0861368B1/de not_active Expired - Lifetime
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102017219939A1 (de) | 2017-11-09 | 2019-05-09 | Volkswagen Aktiengesellschaft | Kühlkreislauf für eine Antriebseinheit eines Kraftfahrzeuges |
DE102018202476A1 (de) | 2018-02-19 | 2019-08-22 | Volkswagen Aktiengesellschaft | Kühlkreislauf für eine Antriebseinheit eines Kraftfahrzeuges |
Also Published As
Publication number | Publication date |
---|---|
ES2146115T3 (es) | 2000-07-16 |
EP0861368B1 (de) | 2000-04-12 |
DE19637817A1 (de) | 1998-03-19 |
US6196168B1 (en) | 2001-03-06 |
DE59701435D1 (de) | 2000-05-18 |
WO1998012425A1 (de) | 1998-03-26 |
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