EP2616650A1 - Kühlmittelkreislauf für eine brennkraftmaschine - Google Patents
Kühlmittelkreislauf für eine brennkraftmaschineInfo
- Publication number
- EP2616650A1 EP2616650A1 EP11740569.6A EP11740569A EP2616650A1 EP 2616650 A1 EP2616650 A1 EP 2616650A1 EP 11740569 A EP11740569 A EP 11740569A EP 2616650 A1 EP2616650 A1 EP 2616650A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cylinder
- coolant
- internal combustion
- combustion engine
- control valve
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases
- F02F7/0002—Cylinder arrangements
- F02F7/0012—Crankcases of V-engines
-
- 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
- F01P3/02—Arrangements for cooling cylinders or cylinder heads
-
- 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
- F01P3/02—Arrangements for cooling cylinders or cylinder heads
- F01P2003/027—Cooling cylinders and cylinder heads in parallel
-
- 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
- F01P2060/08—Cabin heater
Definitions
- Coolant circuit for an internal combustion engine in particular designed as a two-circuit cooling coolant circuit for internal combustion engines with at least two parallel cylinder banks, preferably in V or W design.
- Such coolant circuits are used in internal combustion engine construction for motor vehicles for cooling assemblies of the internal combustion engine, in particular of cylinder heads and cylinder crankcases, at a different temperature level.
- Coolant circuits for internal combustion engines with a cylinder crankcase, which has opposite cylinder banks, that is designed as a so-called "V-engine”, are known inter alia from DE 103 18 744 A1 or DE 10 2006 044 680 A1, but there is always a fluidic connection between the coolant jacket of the cylinder crankcase and the coolant jacket in the overlying cylinder heads, so that no separate flow at different temperature levels is possible.
- the generic DE 100 21 525 A1 shows a cooling circuit for a multi-cylinder internal combustion engine in V-design with a surrounding a cylinder head housing and a cylinder block, cooling jacket which is supplied via a pump with coolant, wherein at least one cylinder cooling jacket and at least one cylinder head cooling chamber with a Connection for the supply of the cooling liquid are provided and wherein the flow through the cylinder head housing and cylinder block with coolant takes place in parallel.
- the disadvantage is that a blockage of the outflow of the cylinder cooling jacket, for faster heating of the therein cooling liquid, while cooling liquid flow through the cylinder head cooling chamber, an undesirable cooling liquid movement in the cylinder cooling jacket by cross flows to result, which slows the heating of the cylinder block.
- the object of the present invention is therefore to provide a coolant circuit for an internal combustion engine having a plurality of cylinder banks, in which rapid heating of the coolant in the cylinder crankcase is possible independently of the coolant flow in the cylinder heads.
- Coolant circuit for an internal combustion engine comprising a cylinder crankcase with at least two cylinder banks, and associated cylinder heads, wherein the cylinder crankcase and the cylinder heads can be acted upon by separate and parallel partial circuits of the coolant circuit of a coolant pump with coolant, wherein a first control valve with at least two synchronously switchable first At- Closures and a second connection in a cylinder crankcase partial circuit is arranged and wherein the first terminals are connected in pairs with each one of the cylinder banks in fluid communication.
- a coolant flow in the cylinder crankcase subcircuit can also be set in internal combustion engines with a plurality of cylinder banks lying opposite each other, independently of the coolant flow in the cylinder head subcircuit become.
- the cylinder crankcase generally has a single coolant jacket, which surrounds the two cylinder banks, so that a coolant exchange between the cylinder banks is in principle possible at any time.
- the cylinder crankcase subcircuit and the cylinder head subcircuit run in sections parallel within the coolant circuit.
- the synchronous switchability of the paired with the cylinder banks fluidly connected first ports prevents unwanted cross flow of the coolant in the cylinder crankcase between the cylinder banks, regardless of the flow of coolant in the cylinder head subcircuit. If the first connections of the first control valve are closed synchronously, for example, then a coolant flow in the parallel cylinder head partial circuit can not stimulate any cross-flow of the coolant between the cylinder banks. The cylinder crankcase can thereby heat up faster.
- This operating principle can be applied analogously for internal combustion engines in V or W construction or boxer engines.
- the amount of coolant to be supplied to the first control valve is to be distributed uniformly in all switching positions of the first control valve to all first connections. This ensures that the same amount of coolant flows through all the cylinder banks or that the coolant flow through the cylinder banks can be prevented at the same time. Consequently unwanted cross flows between the cylinder banks are avoided in each switching position of the first control valve.
- the cylinder banks are each acted upon by a separate cylinder crankcase flow parallel with coolant.
- the first control valve is disposed downstream of the cylinder crankcase, wherein the second port is fluidly connected to a cylinder crankcase return.
- the first control valve is acted upon by the first ports with coolant from the cylinder banks.
- the coolant is discharged via the second connection in a cylinder crankcase return, depending on the switching position of the control valve.
- the first control valve is arranged upstream of the cylinder crankcase, wherein the second connection is fluidly connected to a common cylinder crankcase flow.
- the first control valve is acted upon by the second ports with coolant from a common cylinder crankcase flow.
- the coolant is distributed via the first connections to the parallel cylinder crankcase heaters associated with the cylinder banks. From the cylinder banks, the coolant is discharged via a cylinder crankcase return.
- the first control valve is designed as a ball valve which can be rotated about an axis of rotation, wherein the first connections are arranged radially and the second connection is arranged axially thereon.
- a first control valve according to the invention can be provided particularly favorable.
- the ball valve consists of a housing with rotatably mounted therein Querterrorismsverstellglied.
- the cross-section adjustment member is designed as a spherical hollow body, with an axial opening in the region of the rotary Axial of the cross-section adjustment and two, preferably symmetrically opposite each other, radial openings in a radial circumferential area of the Querterrorismsverstellglieds formed.
- the axial opening is in almost every rotational position of the Querterrorismsverstellglieds in almost complete coverage with the second port.
- the radial openings can be continuously overlapped in synchronism with the first terminals.
- the overlap of each first terminal with the complementary radial opening in each switching position is the same size.
- the rotary actuation of the cross section adjustment member is preferably carried out via an electric drive or a pressure cell with electropneumatic pressure transducer.
- the coolant can be circulated by the coolant pump at least temporarily between a main heat exchanger and the cylinder heads and / or the cylinder crankcase.
- the coolant flow between said components can be temporarily prevented by valves or a coolant pump which can be switched on and off, as a result of which a controlled temperature control of the components is possible independently of one another.
- each cylinder head has its own cylinder head lead and own cylinder head return, with the cylinder crankcase headers and cylinder head headers being fed from a common flow section downstream of the coolant pump.
- the cylinder crankcase return is merge at a junction with the cylinder head recirculations to a common return section.
- the common return section leads to the main heat exchanger and the common flow section goes from the main heat exchanger.
- a second control valve between the main heat exchanger and the coolant pump is arranged in the common flow section, in addition to a branch of the common return section, bypassing the main heat exchanger, opens. Due to the branch, the main heat exchanger, if appropriate, the second control valve, if necessary, be bypassed.
- bypass mode a coolant flow in the cylinder heads, and in dependence of the first control valve in the cylinder crankcase, is possible without the heated coolant is cooled in the main heat exchanger. This allows a particularly rapid and uniform heating of the internal combustion engine at an elevated temperature level.
- the second control valve may direct the coolant through the main heat exchanger by closing the branch.
- a second control valve in this case is preferably a continuously controllable control valve and more preferably a map thermostat, which can be energized when needed for map change.
- the coolant circuit described does not extend exclusively to the examples set forth; in particular, further heat exchangers can be added as desired in further sub-circuits.
- the connection of a known ventilation system is provided with a surge tank to the coolant circuit.
- Fig. 1 is a schematic representation of a first embodiment of a coolant circuit according to the invention
- FIG. 2 shows a schematic illustration of a second embodiment of a coolant circuit according to the invention
- Fig. 3 is a sectional view of a ball valve designed as a first control valve.
- a coolant circuit 1 for an internal combustion engine 2 has a main heat exchanger 8 for heat exchange between the ambient air flowing around it and the coolant flowing through it from the coolant circuit 1, and a coolant pump 7 for generating a coolant circulation in the coolant circuit 1.
- the internal combustion engine 2 is in Substantially consists of a cylinder crankcase 3, which contains the displacements of the working cylinder in two parallel and opposite cylinder banks 3a and is penetrated by a single coolant jacket, and the cylinder banks 3a associated, cylinder heads 4, which accommodate essentially devices for gas exchange for the working cylinder and as well from a coolant jacket are interspersed.
- each cylinder head 4 and the cylinder crankcase 3 has its own flow connection 6a or 5a, which can be acted upon by a cooling medium pump 7 having common flow section 14 with coolant.
- the common flow section 14 branches at a branch point 12, at which the coolant is distributed to the two sides of the V-shaped internal combustion engine 2, on. Further downstream takes place a further division between the cylinder head 4 or cylinder bank 3a.
- the coolant from the cylinder banks 3 a flows via a respective first connection 9 a to a first control valve 10.
- the first control valve 10 is designed as a ball valve shown in more detail in FIG. 3, which synchronously switches the first connections 9 a such that the first control valve 10 supplied coolant quantity in each switching position is evenly distributed to the two first ports 9a.
- the first control valve 10 can completely separate the two first connections 9a from a cylinder crankcase return 5b connected to a second connection 9b of the first control valve 10.
- the cylinder heads 4, however, have their own cylinder head returns 6b, which are merged at a junction 13 with the cylinder crankcase return 5b to a common return section 15.
- the common return section 15 extends to the input side of the main heat exchanger 8, while the common flow section 14 from the output side of the main heat exchanger 8 springs.
- the common flow section 14 contains, in addition to the central coolant pump 7, a second control valve 11 arranged upstream of the coolant pump 7, which is additionally contacted by a branch 16 branching off from the common return section 15, bypassing the main heat exchanger 8.
- the second control valve 11 is designed as an energizable map thermostat, which the branch 16 in dependence on variable by energizingdemit- temperature thresholds closes and the coolant passes through the main heat exchanger 8. Otherwise, the coolant is passed via the branch 16 on the main heat exchanger 8 to the coolant pump 7. From one of the cylinder heads 4, a heating circuit 17 with a heating heat exchanger 18 located therein for heating ambient air for a vehicle interior, the upstream of the coolant pump 7 and downstream of the second control valve 11 again opens into the common flow section 14.
- a coolant circuit 1 for an internal combustion engine 2 has a main heat exchanger 8 for heat exchange between the ambient air flowing around it and the coolant flowing through it from the coolant circuit 1, and a coolant pump 7 for generating a coolant circulation in the coolant circuit 1.
- the internal combustion engine 2 is in Substantially consists of a cylinder crankcase 3, which contains the displacements of the working cylinder in two parallel and opposite cylinder banks 3a and is penetrated by a single coolant jacket, and the cylinder banks 3a associated, cylinder heads 4, which accommodate essentially devices for gas exchange for the working cylinder and are also penetrated by a coolant jacket.
- each cylinder head 4 and the cylinder crankcase 3 are not internally fluidically connected, but involved in separate and parallel to each other subcircuits 5 and 6 of the coolant circuit 1.
- each cylinder head 4, as well as each cylinder bank 3a of the cylinder crankcase 3 has its own flow connection 6a or 5a, which can be acted upon by a cooling medium pump 7 having common flow section 14 with coolant.
- the common flow section 14 branches at a branch point 12, at which the coolant is distributed to the cylinder heads 4 or the cylinder banks 3, on.
- a common cylinder crankcase flow 5c opens to a second port 9b of a, in Fig. 3 shown in detail, the first control valve 10.
- the first control valve 10 distributes the Coolant via synchronously switchable first ports 9a on the parallel cylinder crankcase advances 5a, leading to the cylinder banks 3a.
- the first control valve 10 synchronously switches the first ports 9a such that the coolant amount to be supplied to the first control valve 10 is uniformly distributed in each shift position to the first two ports 9a.
- the first control valve 10 can completely separate the two first connections 9a from the common cylinder crankcase flow 5c.
- the common return section 15 extends to the input side of the main heat exchanger 8, while the common flow section 14 from the output side of the main heat exchanger 8 springs.
- the common flow section 14 contains, in addition to the central coolant pump 7, a second control valve 11 arranged upstream of the coolant pump 7, which is additionally contacted by a branch 16 branching off from the common return section 15, bypassing the main heat exchanger 8.
- the second control valve 11 is designed as an energizable map thermostat, which closes the branch 16 as a function of current-variable coolant temperature threshold values and conducts the coolant via the main heat exchanger 8. Otherwise, the coolant is passed via the branch 16 on the main heat exchanger 8 to the coolant pump 7. From one of the cylinder heads 4, a heating circuit 17 with a heating heat exchanger 18 located therein for heating ambient air for a vehicle interior, which opens upstream of the coolant pump 7 and downstream of the second control valve 11 again in the common flow section 14.
- a ball valve 10 for a coolant circuit of an internal combustion engine a housing 10 b, in which a Querterrorismsverstellglied 10 a is rotatably mounted about a rotation axis A.
- the housing 10b has an axial second connection 9b and two symmetrically opposite each other ing, radial first terminals 9a.
- the cross-section adjustment member 10a is formed as a spherical hollow body with corresponding openings 0d and 10e.
- the axial opening 10e is independent of the current position of the Querterrorismsverstellglieds 10a always approximately congruent with the second terminal 9b.
- the radial openings 10d are distributed symmetrically over the radial circumference of the Querterrorismsverstellglieds, so that the first terminals 9a occupy the same coverage with the complementary radial openings 10d in each rotational position of the Querterrorismsverstellglieds 10a. In the position shown, the first terminals 9a are fully opened. If the Querterrorismsverstellglied 10 a rotated at an angle of 90 ° about the axis of rotation A, the first terminals 9 a are closed. In addition to these two edge positions, all possible intermediate positions are conceivable.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010045217A DE102010045217A1 (de) | 2010-09-13 | 2010-09-13 | Kühlmittelkreislauf für eine Brennkraftmaschine |
| PCT/EP2011/003780 WO2012034617A1 (de) | 2010-09-13 | 2011-07-28 | Kühlmittelkreislauf für eine brennkraftmaschine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2616650A1 true EP2616650A1 (de) | 2013-07-24 |
| EP2616650B1 EP2616650B1 (de) | 2018-07-18 |
Family
ID=44629630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP11740569.6A Not-in-force EP2616650B1 (de) | 2010-09-13 | 2011-07-28 | Kühlmittelkreislauf für eine brennkraftmaschine |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2616650B1 (de) |
| DE (1) | DE102010045217A1 (de) |
| WO (1) | WO2012034617A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013208193A1 (de) * | 2013-05-03 | 2014-11-06 | Behr Thermot-Tronik Gmbh | Elektrisch antreibbares Ventil für eine Regelung von Volumenströmen in einem Heiz- und/oder Kühlsystem eines Kraftfahrzeuges |
| DE102015213879A1 (de) | 2015-07-23 | 2017-01-26 | Bayerische Motoren Werke Aktiengesellschaft | Brennkraftmaschine mit geteiltem Kühlsystem |
| DE102016011070A1 (de) | 2016-09-14 | 2018-03-15 | Audi Ag | Verfahren zum Betreiben einer Antriebseinrichtung sowie entsprechende Antriebseinrichtung |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6019912A (ja) | 1983-07-11 | 1985-02-01 | Daihatsu Motor Co Ltd | 内燃機関の冷却装置 |
| US5497734A (en) * | 1993-12-22 | 1996-03-12 | Nissan Motor Co., Ltd. | Cooling system for liquid-cooled engine |
| JP3872151B2 (ja) * | 1996-12-27 | 2007-01-24 | 富士重工業株式会社 | 水冷式エンジンの冷却装置 |
| DE19803885B4 (de) | 1998-01-31 | 2013-02-07 | Bayerische Motoren Werke Aktiengesellschaft | Kühlkreisanordnung für eine flüssigkeitsgekühlte Brennkraftmaschine |
| DE10021525A1 (de) | 2000-05-03 | 2001-11-15 | Porsche Ag | Kühlkreislauf für eine mehrzylindrige Brennkraftmaschine |
| DE10101826B4 (de) * | 2001-01-17 | 2006-12-21 | Daimlerchrysler Ag | Steuervorrichtung für den Kühlkreislauf einer Brennkraftmaschine |
| DE10127219A1 (de) * | 2001-05-23 | 2002-11-28 | Behr Thermot Tronik Gmbh | Kühlanlage für einen Verbrennungsmotor |
| DE10318744B4 (de) | 2003-04-25 | 2006-04-27 | Audi Ag | Kühlsystem |
| DE102006044680A1 (de) | 2006-09-21 | 2008-04-10 | GM Global Technology Operations, Inc., Detroit | Verbrennungsmotor mit Turboladernachlaufkühlung |
| DE502007001624D1 (de) * | 2007-01-17 | 2009-11-12 | Ford Global Tech Llc | Integriertes Motorkühlsystem |
-
2010
- 2010-09-13 DE DE102010045217A patent/DE102010045217A1/de not_active Withdrawn
-
2011
- 2011-07-28 EP EP11740569.6A patent/EP2616650B1/de not_active Not-in-force
- 2011-07-28 WO PCT/EP2011/003780 patent/WO2012034617A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2012034617A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2616650B1 (de) | 2018-07-18 |
| WO2012034617A1 (de) | 2012-03-22 |
| DE102010045217A1 (de) | 2012-03-15 |
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