EP3097285A1 - Verfahren und vorrichtung zur entlüftung eines wärmemanagementsystems einer verbrennungskraftmaschine - Google Patents
Verfahren und vorrichtung zur entlüftung eines wärmemanagementsystems einer verbrennungskraftmaschineInfo
- Publication number
- EP3097285A1 EP3097285A1 EP15700319.5A EP15700319A EP3097285A1 EP 3097285 A1 EP3097285 A1 EP 3097285A1 EP 15700319 A EP15700319 A EP 15700319A EP 3097285 A1 EP3097285 A1 EP 3097285A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coolant
- rotary valve
- internal combustion
- combustion engine
- engine
- 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
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims description 14
- 239000002826 coolant Substances 0.000 claims abstract description 78
- 239000012530 fluid Substances 0.000 claims abstract description 4
- 238000001816 cooling Methods 0.000 claims description 39
- 238000013022 venting Methods 0.000 claims description 14
- 238000004891 communication Methods 0.000 claims description 3
- 239000003507 refrigerant Substances 0.000 claims description 2
- 238000009423 ventilation Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 17
- 230000005540 biological transmission Effects 0.000 description 11
- 239000007789 gas Substances 0.000 description 10
- 239000003921 oil Substances 0.000 description 10
- 230000000740 bleeding effect Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000010705 motor oil Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000012208 gear oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002918 waste heat Substances 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
- 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
- F01P11/0285—Venting devices
-
- 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
- F01P11/028—Deaeration devices
-
- 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
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/04—Arrangements of liquid pipes or hoses
-
- 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
-
- 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 method and a device for venting a thermal management system of an internal combustion engine.
- Thermal management systems of modern internal combustion engines consist of many different sub-circuits in which circulates coolant. When refilling coolant or as a result of repair, air may enter the system and coolant lines. For proper operation of the system, the air must be evacuated.
- the invention has for its object to provide a simple way to vent a thermal management system.
- this is achieved with a method for venting a thermal management system of an internal combustion engine in which coolant circulates in a plurality of coolant circuits, in which switched inputs of a rotary valve are opened and closed in a predetermined order to one or more of the coolant circuits via at least one with a coolant -Alteilungs representativeer in vented vent line in the direction of the expansion tank to vent.
- the coolant surge tank is in contact with the environment of the internal combustion engine so that the air can escape from the system.
- the targeted switching of the rotary valve and thus the targeted opening and closing of individual coolant circuits sectionten the trapped in the coolant lines air with the coolant flow is selectively transported in the direction of the or the vent lines and pushed over this in the expansion tank.
- the sequence of opening and closing the inputs and outputs of the rotary valve is tunable to the conditions of the thermal management system and is independent of the operating positions of the rotary valve in the other operation of the internal combustion engine.
- the internal combustion engine is preferably idling during the bleeding process, so that the heat management system can be vented even when using a mechanically driven coolant pump without the connection of an additional pump. It is also possible to operate the internal combustion engine at short intervals at increased speed. Another option is to increase the idling speed for the duration of the bleeding program.
- the individual inputs of the rotary valve can be opened briefly, so that a pulsed coolant flow can occur in certain coolant lines of the system.
- the control sequence for switching the rotary valve is preferably stored in the control unit. It is of course possible to provide several control sequences that are used for venting certain coolant circuits and / or in certain situations.
- the venting method is preferably carried out only during maintenance, for example as part of a workshop visit and in a special venting mode of the control unit. However, it is also possible to carry out the venting process when needed also in vehicle operation to keep subcircuits permanently free of air.
- An inventive apparatus for venting a thermal management system of an internal combustion engine comprises a coolant surge tank, a control unit which controls a rotary valve having switched inputs, which are connected to an engine cooling circuit and a main radiator circuit, wherein at least one of the refrigerant circuits via a vent line with the coolant reservoir is connected.
- the coolant surge tank is preferably connected to an unswitched input of the rotary valve.
- a heating circuit and / or a bearing block cooling an exhaust gas turbocharger may be fluidly connected to the venting device.
- the rotary valve can also occupy intermediate positions in which a plurality of partial circuits are simultaneously opened completely or partially.
- FIG. 1 shows a schematic view of a thermal management system in a first variant, with an apparatus for carrying out a venting method according to the invention
- FIG. 2 shows a schematic view of a thermal management system in a second variant, with a device for carrying out a venting method according to the invention.
- FIG. 1 shows a thermal management system 10 for an internal combustion engine 12 (here a series four-cylinder gasoline engine).
- coolant flows through an engine block of the internal combustion engine 12, an air-cooled main cooler 14 and a heating heat exchanger 16 in a plurality of coolant circuits.
- the coolant is moved mainly by a coolant pump 18 which is mechanically driven here.
- the coolant streams are controlled via a rotary valve 20 whose inputs are connected to the recirculations of the coolant circuits and whose output is in direct flow communication with the coolant pump 18, as will be described in detail later.
- a coolant expansion tank 22, a transmission oil heat exchanger 24, an engine oil heat exchanger 26 and an additional, electrically operated coolant pump 28 are provided, the latter being in fluid communication with a heat exchanger (housing cooling) of an exhaust gas turbocharger 30.
- the electrically driven additional coolant pump 28 in this example has a power of about 20-150 W.
- the main radiator 14 is supported by a fan 32.
- an auxiliary cooler 34 is provided to support the main radiator, which may be formed for example as Radhauskühler.
- an engine cooling circuit 36 (also referred to as "small cooling circuit"), cold coolant is transported from the coolant pump 8 to an engine block of the internal combustion engine 12, more specifically to cooling ducts in the cylinder head housing and crankcase where it absorbs waste heat before it is collected in a line 38
- a short-circuit line 40 leads from the collecting line 38 to a first switched input 42 of the rotary valve 20.
- the short-circuit line 40 also forms the return of the engine cooling circuit 36.
- the engine cooling circuit 36 can be interrupted here by an engine shut-off valve 43 in its coolant supply line downstream of the coolant pump 18.
- a coolant line 44 which is part of a main cooler circuit 46 which leads back through the main cooler 14 and via a return 47 to a connected second input 48 of the rotary valve 20, passes from the collecting line 38.
- a heating circuit 50 in which the heating heat exchanger 16 is arranged, which can deliver heat to a vehicle interior.
- the return 51 of the heating circuit 50 leads to a third switched input 52 of the rotary valve 20.
- a non-switched, single output 53 of the rotary valve 20 leads via a short line 55 to the coolant pump 18.
- the position of or the rotary valve of the rotary valve 20 and thus the opening degree of the switched inputs 42, 48, 52 is predetermined by a control unit 54, which may form part of an engine electronics.
- data are stored, which allow a map control function of predetermined operating conditions of the internal combustion engine 12.
- the states of other components such as the heater core 16, the exhaust gas turbocharger 30, the engine oil heat exchanger 26 and data from temperature sensors 56 in the engine block or in the coolant line 44 to the main cooler 14 are taken into account.
- the position of the switched inputs of the rotary valve 20 is determined.
- the additional electric coolant pump 28 is located in an exhaust gas turbocharger cooling circuit 58 which cools the exhaust gas turbocharger 30 and which opens into a non-switched input 60 of the rotary valve 20.
- the exhaust gas turbocharger cooling circuit 58 is supplied by a branch from the engine cooling circuit 36 (not shown here in detail).
- the engine oil heat exchanger 26 is connected directly to the manifold 38 of the engine cooling circuit 36. Cold coolant is supplied to the coolant pump 18 through a branch 62. A control is not provided in this example, but would be realized by an additional thermostat.
- the coolant expansion tank 22 leads via a connecting line 70 to the return flow of the exhaust gas turbocharger cooling circuit 58, which opens into the non-switched input 60 of the rotary valve 20.
- Vent lines 72 and 74 connect the coolant surge tank 22 to the engine cooling circuit 36, more specifically the manifold 38 and the inlet to the main radiator 14 in the main radiator circuit 46.
- the transmission oil heat exchanger 24 is located in a rotary valve 20 independent transmission oil cooling circuit 76 and is by its own Thermostat valve 78 connected. This is a conventional wax thermostat which opens the transmission oil cooling circuit 76 at a predetermined temperature and closes it below this temperature.
- the transmission oil cooling circuit 76 leads through the engine block in a feed line 80, which opens into the coolant line 55.
- the orifice point is upstream of the coolant pump 18 but downstream of the outlet 53 of the rotary valve 20.
- a line 82 branches between the coolant pump 18 and the engine shut-off valve 43, passing through the main radiator 14 and back to the transmission oil heat exchanger 24 (low temperature loop ) leads. This is only necessary for vehicles with transmission cooling.
- the coolant pump 18 is here integrated directly into the engine block of the internal combustion engine 12.
- the rotary valve 20 is in this embodiment form the front side of the engine block of the internal combustion engine 12 in the immediate vicinity of the coolant pump 18 attached.
- the coolant flows via the short-circuit line 40 from the hot side of the internal combustion engine 12 directly into the rotary valve 20 and is from there via the coolant pump 18 directly back to the cold side of the internal combustion engine 12.
- coolant flows through the heating circuit 50 via the heater core 6.
- the switching of the inputs 42 and 52 permits multiple operating conditions.
- the engine cooling circuit 36 and the heating circuit 50 are flowed through in parallel.
- the flow conditions are chosen so that a significantly larger volume flow through the engine cooling circuit 36 flows as through the heating circuit 50, as is known.
- the internal combustion engine 12 can be heated to its operating temperature while the vehicle interior is heated at the same time.
- the inlet 42 is fully or partially closed, the flow through the engine cooling circuit 36 reduces, so that the load on the coolant pump 18 is reduced.
- the open heating circuit 50 heat can be dissipated and a targeted circulation of the coolant can be maintained. Due to the higher flow resistance of the coolant flow rate is reduced by the internal combustion engine 12. This can be used for faster heating during a cold start.
- the heating circuit 50 is disconnected and is not flowed through. This is the one case, if no heating function is desired, so the vehicle occupants have turned off the heater.
- Another purpose is a driving situation in which the load of the internal combustion engine 12 suddenly increases, for example, when driving uphill or abruptly accelerating.
- closing the heating circuit 50 in combination with opening the input 42 of the engine cooling circuit 36 and optionally the input 48 of the main radiator circuit 46 results in the entire coolant flow being available for cooling the internal combustion engine 12 so that temperature peaks are avoided.
- the inputs 42, 48 and 52 are closed to at least substantially interrupt a flow of the coolant in the engine cooling circuit 36 and thus a faster heating. to reach.
- the engine shut-off valve 43 is also closed here.
- the main cooler circuit 46 is switched on and off by opening or closing the inlet 48 of the rotary valve 20. This can be done (within the scope of the design of the rotary valve 20) independently of the opening or closing of the engine cooling circuit 36 and of the heating circuit 50 and also be independent of temperature by specifications of the control unit 54.
- the flow through the engine can be controlled here, inter alia, in Warmiauf and in relevant consumption cycles for optimal heat distribution and friction optimization by controlling the rotary valve 20 and the Motorabsperrventils 43. These functions are also stored in the control unit 54.
- the control unit 54 also has a stored ventilation program that 'eihen blur a Anticianr for different positions of the rotary valve 20 includes.
- This program can be executed, for example, for maintenance purposes in a workshop equipped for this purpose.
- the internal combustion engine 12 is idling. If the normal idle speed is insufficient, the speed can be increased briefly or the idle speed can be raised to a much higher level for the duration of the bleeding program.
- This control of the switchable inputs 42, 48, 52 of the rotary valve 20 is completely independent of the control of the rotary valve in other operating conditions and serves only the targeted direction of the coolant through the vent lines 72, 74, so entrained air is deposited in the surge tank 22 ,
- the individual coolant circuits can be briefly opened and closed again in quick succession in order to transfer air from one circuit to the other and thus bring it to the expansion tank 22. It is equally possible to selectively operate only one of the circuits and to selectively open and close valves which may be present on the vent lines 72, 74.
- venting program or programs are stored in the control unit 54 and can be retrieved in a maintenance mode or an assembly mode, in which case the control sequence is automatically executed.
- FIG. 2 shows a second embodiment of a thermal management system 10 ', wherein for already introduced components, the already known reference numerals continue to be used. Changed but similar components are designated by the known reference numeral with a dash.
- the internal combustion engine 12 is a six-cylinder in-line engine, which leads to space reasons that the rotary valve 20 is not arranged end side, but along a longitudinal side of the engine block of the internal combustion engine 12.
- the return line 47 'of the main cooler circuit 46' leads piece by piece through the engine block of the internal combustion engine 12 'to the switched input 48' of the rotary valve 20.
- the inlet 42 'in the second embodiment corresponds to the inlet 42 in the first embodiment and vice versa.
- the function of the rotary valve 20 is analogous to that in the first embodiment.
- the return of the exhaust turbocharger cooling circuit 58 ' opens into the conduit 44 upstream of a branch of the shorting line 40' to the rotary valve 20.
- the inlet of the exhaust gas turbocharger cooling circuit 58 ' branches off downstream of an outlet from the engine block from a supply line 82 of the transmission oil cooling circuit 76' to the main cooler 14.
- the return of the transmission oil cooling circuit 76 'from the transmission oil heat exchanger 24 leads to the unswitched input 60 of the rotary valve 20.
- the connecting line 70 from the coolant expansion tank 22 opens here in the return of the gear oil cooling circuit 76 ', which leads to the non-switched input 60 of the rotary valve 20.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Exhaust-Gas Circulating Devices (AREA)
- Supercharger (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014201170.1A DE102014201170A1 (de) | 2014-01-23 | 2014-01-23 | Verfahren und Vorrichtung zur Entlüftung eines Wärmemanagementsystems einer Verbrennungskraftmaschine |
PCT/EP2015/050673 WO2015110344A1 (de) | 2014-01-23 | 2015-01-15 | Verfahren und vorrichtung zur entlüftung eines wärmemanagementsystems einer verbrennungskraftmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3097285A1 true EP3097285A1 (de) | 2016-11-30 |
EP3097285B1 EP3097285B1 (de) | 2017-11-01 |
Family
ID=52347342
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15700319.5A Active EP3097285B1 (de) | 2014-01-23 | 2015-01-15 | Verfahren und vorrichtung zur entlüftung eines wärmemanagementsystems einer verbrennungskraftmaschine |
Country Status (5)
Country | Link |
---|---|
US (1) | US11085357B2 (de) |
EP (1) | EP3097285B1 (de) |
CN (1) | CN105745412B (de) |
DE (1) | DE102014201170A1 (de) |
WO (1) | WO2015110344A1 (de) |
Families Citing this family (5)
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DE102016119181A1 (de) | 2016-10-10 | 2018-04-12 | Volkswagen Aktiengesellschaft | Brennkraftmaschine |
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FR3088677B1 (fr) * | 2018-11-20 | 2020-11-13 | Psa Automobiles Sa | Procede et dispositif de refroidissement d'un moteur a combustion interne |
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CN103321735B (zh) * | 2013-07-02 | 2016-03-30 | 湖南南车时代电动汽车股份有限公司 | 一种混合动力客车发动机冷却方法及系统装置 |
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SE538626C2 (sv) * | 2013-10-24 | 2016-10-04 | Scania Cv Ab | Kylsystem i ett fordon |
DE102014201167A1 (de) * | 2014-01-23 | 2015-07-23 | Bayerische Motoren Werke Aktiengesellschaft | Wärmemanagementsystem für eine Verbrennungskraftmaschine |
US10211493B2 (en) * | 2014-05-16 | 2019-02-19 | Ford Global Technologies, Llc | Thermal management system for an electrified vehicle |
DE102014216658B4 (de) * | 2014-08-21 | 2022-12-01 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zum Betrieb eines Kühlsystems einer Verbrennungskraftmaschine und Schutzsystem in einem Kühlsystem |
US10866603B2 (en) * | 2014-10-21 | 2020-12-15 | Ford Global Technologies, Llc | Wax thermostat |
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DE102015111407B4 (de) * | 2015-07-14 | 2024-08-14 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Kühlsystem für ein Fahrzeug |
DE102016119181A1 (de) * | 2016-10-10 | 2018-04-12 | Volkswagen Aktiengesellschaft | Brennkraftmaschine |
JP6777500B2 (ja) * | 2016-10-27 | 2020-10-28 | 株式会社山田製作所 | 制御バルブ |
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2014
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-
2015
- 2015-01-15 CN CN201580002638.1A patent/CN105745412B/zh active Active
- 2015-01-15 EP EP15700319.5A patent/EP3097285B1/de active Active
- 2015-01-15 WO PCT/EP2015/050673 patent/WO2015110344A1/de active Application Filing
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2016
- 2016-07-22 US US15/217,708 patent/US11085357B2/en active Active
Non-Patent Citations (1)
Title |
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See references of WO2015110344A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN105745412A (zh) | 2016-07-06 |
US20170030252A1 (en) | 2017-02-02 |
DE102014201170A1 (de) | 2015-07-23 |
EP3097285B1 (de) | 2017-11-01 |
US11085357B2 (en) | 2021-08-10 |
WO2015110344A1 (de) | 2015-07-30 |
CN105745412B (zh) | 2018-08-10 |
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