EP3405660A1 - Nachlaufkühlsystem, zylinderkopf sowie verfahren zum betrieb eines nachlaufkühlsystems - Google Patents
Nachlaufkühlsystem, zylinderkopf sowie verfahren zum betrieb eines nachlaufkühlsystemsInfo
- Publication number
- EP3405660A1 EP3405660A1 EP16809349.0A EP16809349A EP3405660A1 EP 3405660 A1 EP3405660 A1 EP 3405660A1 EP 16809349 A EP16809349 A EP 16809349A EP 3405660 A1 EP3405660 A1 EP 3405660A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cooling system
- fuel pump
- cooled
- coolant
- cylinder head
- 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 96
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000000446 fuel Substances 0.000 claims abstract description 91
- 239000002826 coolant Substances 0.000 claims abstract description 63
- 238000002485 combustion reaction Methods 0.000 claims abstract description 30
- 230000000694 effects Effects 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000013022 venting 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
- F01P3/02—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
- 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
- F01P11/16—Indicating devices; Other safety devices concerning coolant temperature
-
- 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
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
- F02B39/005—Cooling of pump drives
-
- 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
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/26—Cylinder heads having cooling means
- F02F1/36—Cylinder heads having cooling means for liquid cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/04—Feeding by means of driven pumps
- F02M37/14—Feeding by means of driven pumps the pumps being combined with other apparatus
-
- 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
- F01P2003/024—Cooling 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
- F01P2031/00—Fail safe
- F01P2031/30—Cooling after the engine is stopped
-
- 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
- F01P2060/10—Fuel manifold
-
- 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
- F01P2060/12—Turbo charger
-
- 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
- F01P2070/00—Details
- F01P2070/50—Details mounting fans to heat-exchangers
Definitions
- the invention relates to a trailing cooling system, a cylinder head for an internal combustion engine of a motor vehicle and a method for operating a trailing cooling system.
- Modern internal combustion engines with direct fuel injection must, for reasons of fuel efficiency, be operated as hotly as possible in order to reduce internal engine friction.
- the fuel high-pressure pump which is operated for example with the exhaust camshaft, is also heated, since this is provided in the region of the internal combustion engine.
- the high-pressure fuel pump can be arranged via a holder directly on the cylinder head of the internal combustion engine.
- the object of the present invention is to cool a fuel pump in a simple manner, inexpensively and efficiently.
- a wake cooling system with a pump, a coolant channel for a coolant and at least one component to be cooled, wherein the coolant channel is associated with a fuel pump.
- the basic idea of the invention is to design a wake cooling system such that the already existing wake cooling system is used to prevent overheating of the fuel pump, if the motor vehicle is turned off hot. Accordingly, there are no additional costs for two separate cooling systems, since not every single component of the internal combustion engine is cooled with a separately formed follow-up cooling system, but at least two components share a common follow-up cooling system. It has been found that the cooling capacity is sufficiently high so that several components can be cooled by a common cooling system.
- the fuel pump is, for example, a high-pressure fuel pump.
- the at least one component to be cooled is an exhaust-gas turbocharger.
- the exhaust gas turbocharger is cooled.
- the exhaust gas turbocharger is usually cooled with a water-glycol mixture as a coolant.
- the cooling system used for cooling the exhaust gas turbocharger can be redesigned such that It simultaneously cools the fuel pump to ensure that the fuel does not evaporate.
- the at least one component to be cooled may be a cylinder head.
- the cylinder head is directly or indirectly connected to the fuel pump. As a result, components of the cylinder head can be cooled simultaneously.
- the follow-up cooling is realized in that a pump, in particular an electric main water pump or a separate electric auxiliary pump is provided which promotes the coolant through the coolant channel, the fuel pump and the exhaust gas turbocharger and / or the cylinder head as components to be cooled or as to be cooled Component is assigned.
- a pump in particular an electric main water pump or a separate electric auxiliary pump is provided which promotes the coolant through the coolant channel, the fuel pump and the exhaust gas turbocharger and / or the cylinder head as components to be cooled or as to be cooled Component is assigned.
- the coolant passage extends through the fuel pump, for example, through the housing thereof. This ensures that the fuel pump and the fuel therein are essentially cooled directly, since the coolant flows directly through the fuel pump, in particular through a housing region of the fuel pump. Any heat transfer losses can be minimized.
- the coolant channel extends through a holder of the fuel pump. This prevents heat from the engine block or cylinder head through the bracket migrates to the fuel pump. The advantage of this is that the fuel pump can be changed in a simple manner without a cooling circuit has to be interrupted and re-established.
- a coolant radiator in the wake cooling system is provided at least piecewise parallel to or in series with the coolant channel. This makes it possible to achieve a particularly effective cooling, in particular the fuel pump and the components to be cooled.
- the coolant radiator produces an even higher cooling effect.
- the fan cooling system can be associated with a fan.
- the fan can be used to increase the additional cooling effect of the coolant cooler again.
- the object of the invention is also achieved by a cylinder head for an internal combustion engine through which a part of the coolant channel of a trailing cooling system of the aforementioned type extends.
- the cylinder head thus comprises a region of the coolant channel, so that the cylinder head is used for cooling components to be cooled and / or the fuel pump.
- the fuel pump is mounted by means of a bracket on the cylinder head, wherein the coolant channel is located in the vicinity of the region in which the holder for the fuel pump is arranged on the cylinder head.
- This ensures that the fuel pump is cooled in an indirect manner, since the coolant flows directly in the connection region of the fuel pump through the cylinder head formed separately therefrom.
- Indirect cooling means that a heat transfer from a hot component to the fuel pump is prevented.A change of the fuel pump is easily possible, since no coolant lines run through the fuel pump itself.Furthermore, a uniform interface for different fuel pumps created over the corresponding connected fuel pump can be cooled.
- the invention provides a method for operating a caster cooling system of the aforementioned type, in which the operation of the pump of the cascade cooling system based on a determined needs-based control.
- the cooling by the Optimize the aftercooling system as this takes place as needed.
- the respective largest individual cooling requirement of the respective components to be cooled can be fulfilled by the after-cooling system.
- the energy consumption required by the aftercooling system can be minimized as needed.
- the control of the pump is determined from known variables of an engine control unit, in particular via software for determining the minimum cooling requirement of the at least one component to be cooled and the fuel pump. It is thus possible in a simple manner to realize the demand-driven control of the pump, since no additional values must be determined in advance.
- the follow-up cooling system may include a fan, the operation of which is based on a determined control.
- the fan has an influence on the cooling capacity, which is why a different control of the fan can cause a correspondingly different cooling performance.
- the control of the fan from known variables of an engine control unit is determined, in particular via software for determining the minimum cooling requirement of the at least one component to be cooled and the fuel pump. It is thus possible in a simple manner to realize the demand-driven control of the fan, since no additional values must be determined in advance.
- the known sizes for determining the control of the pump and / or the fan are sizes of the current engine operation, z. B. current coolant temperature, current oil temperature, averaged over a certain period of time current engine performance and / or current ambient temperature.
- the aftercooling system is associated with at least one switchable actuator, which is switched during operation of the follow-up cooling system so that the best possible cooling effect for the at least one component to be cooled and / or the fuel pump is achieved. This makes it possible to switch the cooling capacity as needed.
- FIG. 1 shows a perspective view of an internal combustion engine with a cascade cooling system according to the invention
- FIG. 2 shows a sectional illustration of a part of the internal combustion engine from FIG. 1,
- Figure 3 is a schematic overview of a follow-up cooling system according to the invention in an internal combustion engine according to a first embodiment
- Figure 4 is a schematic overview of a caster cooling system according to the invention in an internal combustion engine according to a second embodiment.
- FIG. 1 shows an internal combustion engine 10 which has an engine block 12 and a cylinder head 14 which is coupled to the engine block 12.
- the internal combustion engine 10 also includes a fuel pump 16, which is fastened in the embodiment shown via a holder 18 in the form of a pump carrier on the cylinder head 14.
- the fuel pump 16 may be a high pressure fuel pump.
- the internal combustion engine 10 has an exhaust gas turbocharger 20, which is a component of the internal combustion engine 10 to be cooled.
- the internal combustion engine 10 also has a follow-up cooling system 22, with which inter alia the exhaust gas turbocharger 20 and the fuel pump 16 are cooled, as will be explained below.
- the aftercooling system 22 is in particular designed such that the components or components of the internal combustion engine 10 to be cooled are still cooled even when the internal combustion engine 10 is turned off hot.
- the follow-up cooling system 22 has its own pump 24, which in the embodiment shown is designed as an electric auxiliary pump (see FIG. 3). Alternatively, a non-electric pump may be provided. Further, the wake cooling system 22 includes a coolant passage 26 for a coolant that extends from the pump 24 through the cylinder head 14 to the exhaust gas turbocharger 20.
- the coolant channel 26 accordingly has a coolant feed line 28, which extends from the pump 24 into the cylinder head 14. Departing from the coolant supply line 28, the coolant channel 26 extends along a region 29 within the cylinder head 14, which is assigned to the holder 18 of the fuel pump 16.
- the coolant (K) flowing through the coolant channel 26, which is represented by the arrow, thereby reduces the heat (W) transmitted by the internal combustion engine 10 to the holder 18, which is likewise represented by corresponding arrows.
- the heat input of the internal combustion engine 10 into the holder 18 and the fuel pump 16 connected thereto is therefore significantly reduced, which is why the fuel present in the fuel pump 16 is not heated so much that it could boil.
- the coolant After the coolant has flowed through the cylinder head 14, the coolant flows into an exhaust gas turbocharger feed line 30, which in the embodiment shown is located laterally on the engine block 12 and leads to an inlet 32 of the exhaust gas turbocharger 20.
- the exhaust gas turbocharger 20 is therefore cooled by the same coolant, which has previously cooled the fuel pump 16.
- the internal combustion engine 10 includes an example, mechanically driven water pump 34th
- a follow-up cooling is provided, which is still active when the internal combustion engine 10 is switched off at a hot shutdown or is still running. Accordingly, in the case of a hot-cut internal combustion engine, the coolant is still conveyed through the coolant channel 26 in order to cool the fuel pump 16 and the exhaust-gas turbocharger 20. In an electric pump as a pump 24, the follow-up cooling can be carried out independently of the operation of the internal combustion engine.
- the coolant used for cooling the exhaust gas turbocharger 20 is thus initially diverted into the cylinder head 14, so that the coolant Cylinder head 14 cools or reduces the heat input, in particular in the region 29, on which the holder 18 is arranged with the fuel pump 16.
- the fuel pump 16 and the fuel contained therein are indirectly cooled, effectively preventing the fuel from vaporizing and forming vapor bubbles that may result in poor starting performance of the engine 10.
- the exhaust gas turbocharger 20 is cooled by the same coolant.
- the fuel pump 16 has an interface in its housing, to which the coolant channel 26 can be connected, so that the coolant channel 26 at least partially through the Fuel pump 16 would run itself.
- a coolant radiator 40 for example in the form of an air-coolant heat exchanger, in series or at least partially parallel to the coolant channel 16 is integrated and at least with a partial volume flow of the coolant flows through (see FIG. 4).
- the additional cooling effect of the coolant cooler 40 on the coolant and thus also on the components to be cooled can be increased, for example, by the operation of a, in particular electric, fan 41 after hot shutdown of the internal combustion engine 10.
- a, in particular electric, fan 41 By the operation of the pump 24 while at least a partial volume flow of the coolant is pumped through the coolant radiator 40, which is additionally cooled by the operation of the fan 41 and thus allows more effective cooling of the components to be cooled, in particular the fuel pump 16 and the exhaust gas turbocharger 20 and / or the cylinder head 14.
- an additional cooling function for thermally highly stressed areas of the cylinder head 14 is provided, for example exhaust valve webs.
- a particularly advantageous implementation according to the invention results when the cooling of the components takes place as needed.
- the maximum individual cooling requirement of the respective components to be cooled must be met by the after-cooling system 22.
- Such a single cooling request consists for example of the combination of a drive duration and a drive intensity, z.
- the pump 24, a drive duration and driving intensity, z. B. for varying the speed, a fan 41 and a drive duration and a drive signal from possibly further switchable components in the aftercooling system 22, for example, an electrically connected actuator 42 (see Figure 4).
- the determination of the individual cooling requirement of a component can, for. Example, via an empirical or physical model, for example in the form of a model of the maximum temperature of the component for the time range after a possible shutdown of the engine 10 done, which is stored in the engine control unit. For example, from sizes of the current engine operation, z. B. current coolant temperature, current oil temperature, averaged over a certain period of time current engine power, current ambient temperature, etc., the need and the size of a single cooling request, for example, the fuel pump 16 or the exhaust gas turbocharger 20 are determined.
- the caster cooling system 22 is activated when switching off the internal combustion engine 10 and operated according to the largest individual cooling requirement of all components to be cooled as needed.
- a follow-up cooling system 22 and a cylinder head 14 are provided in a simple manner, with which an active cooling of the fuel pump 16 can be ensured efficiently and inexpensively.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supercharger (AREA)
- Fuel-Injection Apparatus (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016200508.1A DE102016200508A1 (de) | 2016-01-18 | 2016-01-18 | Nachlaufkühlsystem, Zylinderkopf sowie Verfahren zum Betrieb eines Nachlaufkühlsystems |
PCT/EP2016/079985 WO2017125196A1 (de) | 2016-01-18 | 2016-12-07 | Nachlaufkühlsystem, zylinderkopf sowie verfahren zum betrieb eines nachlaufkühlsystems |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3405660A1 true EP3405660A1 (de) | 2018-11-28 |
EP3405660B1 EP3405660B1 (de) | 2020-05-06 |
Family
ID=57539234
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16809349.0A Active EP3405660B1 (de) | 2016-01-18 | 2016-12-07 | Nachlaufkühlsystem, zylinderkopf sowie verfahren zum betrieb eines nachlaufkühlsystems |
Country Status (5)
Country | Link |
---|---|
US (1) | US10781741B2 (de) |
EP (1) | EP3405660B1 (de) |
CN (1) | CN108138642B (de) |
DE (1) | DE102016200508A1 (de) |
WO (1) | WO2017125196A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102394827B1 (ko) * | 2017-12-18 | 2022-05-06 | 현대자동차주식회사 | 엔진부하기반 터보차저 키 오프 냉각제어방법 및 엔진 시스템 |
KR102552089B1 (ko) * | 2018-10-16 | 2023-07-06 | 현대자동차주식회사 | 터보차저가 적용된 차량의 엔진 냉각시스템 및 방법 |
US11125185B2 (en) | 2019-01-31 | 2021-09-21 | Pratt & Whiiney Canada Corp. | Engine assembly with heat management system |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3835822A (en) * | 1972-08-16 | 1974-09-17 | Brunswick Corp | Cooled fuel pump for internal combustion engines |
DE3407521C1 (de) * | 1984-03-01 | 1985-03-14 | Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart | Fluessigkeitskuehlsystem fuer eine aufgeladene Brennkraftmaschine |
NL8602971A (nl) * | 1986-11-24 | 1988-06-16 | Volvo Car Bv | Koelsysteem voor een turbocompressor. |
US4728306A (en) * | 1986-12-29 | 1988-03-01 | Brunswick Corporation | Marine propulsion auxiliary cooling system |
DE10318744B4 (de) * | 2003-04-25 | 2006-04-27 | Audi Ag | Kühlsystem |
US20050188943A1 (en) * | 2003-10-21 | 2005-09-01 | Henry Gonzalez | System and method for customizing a rotary engine for marine vessel propulsion |
DE102006053514B4 (de) * | 2006-11-14 | 2016-09-29 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | Verbrennungsmotor mit Turboladernachlaufkühlung |
JP2008202441A (ja) * | 2007-02-19 | 2008-09-04 | Suzuki Motor Corp | エンジンの燃料供給装置 |
DE102010015107B4 (de) * | 2010-04-16 | 2014-01-02 | Audi Ag | Kühlmittelkreislauf für eine Brennkraftmaschine eines Kraftfahrzeugs |
DE102014201167A1 (de) * | 2014-01-23 | 2015-07-23 | Bayerische Motoren Werke Aktiengesellschaft | Wärmemanagementsystem für eine Verbrennungskraftmaschine |
JP6291973B2 (ja) * | 2014-03-31 | 2018-03-14 | スズキ株式会社 | 燃料ポンプの取付構造 |
-
2016
- 2016-01-18 DE DE102016200508.1A patent/DE102016200508A1/de not_active Withdrawn
- 2016-12-07 EP EP16809349.0A patent/EP3405660B1/de active Active
- 2016-12-07 WO PCT/EP2016/079985 patent/WO2017125196A1/de active Application Filing
- 2016-12-07 CN CN201680059206.9A patent/CN108138642B/zh active Active
-
2018
- 2018-07-17 US US16/037,293 patent/US10781741B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP3405660B1 (de) | 2020-05-06 |
US20180320577A1 (en) | 2018-11-08 |
US10781741B2 (en) | 2020-09-22 |
WO2017125196A1 (de) | 2017-07-27 |
DE102016200508A1 (de) | 2017-07-20 |
CN108138642B (zh) | 2020-12-25 |
CN108138642A (zh) | 2018-06-08 |
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