EP3292293A1 - Zylinderkopf für eine brennkraftmaschine - Google Patents
Zylinderkopf für eine brennkraftmaschineInfo
- Publication number
- EP3292293A1 EP3292293A1 EP16736760.6A EP16736760A EP3292293A1 EP 3292293 A1 EP3292293 A1 EP 3292293A1 EP 16736760 A EP16736760 A EP 16736760A EP 3292293 A1 EP3292293 A1 EP 3292293A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- channel
- cooling
- region
- cylinder head
- inlet
- 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 12
- 238000001816 cooling Methods 0.000 claims abstract description 145
- 239000002826 coolant Substances 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000005266 casting Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- 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
- F02F1/40—Cylinder heads having cooling means for liquid cooling cylinder heads with means for directing, guiding, or distributing liquid stream
-
- 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
- F01P1/00—Air cooling
- F01P1/06—Arrangements for cooling other engine or machine parts
- F01P1/08—Arrangements for cooling other engine or machine parts for cooling intake or exhaust 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
- 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
- F01P3/00—Liquid cooling
- F01P3/12—Arrangements for cooling other engine or machine parts
- F01P3/14—Arrangements for cooling other engine or machine parts for cooling intake or exhaust valves
-
- 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
- F02F1/243—Cylinder heads and inlet or exhaust manifolds integrally cast together
-
- 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
- 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
- F02F1/38—Cylinder heads having cooling means for liquid cooling the cylinder heads being of overhead valve type
-
- 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
- F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
- F02F1/4214—Shape or arrangement of intake or exhaust channels in cylinder heads specially adapted for four or more valves per cylinder
-
- 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
Definitions
- the invention relates to a cylinder head for an internal combustion engine with liquid cooling with at least two exhaust valves for controlling exhaust ports and at least one inlet valve for controlling at least one inlet port per cylinder, with at least one cooling jacket through which coolant flows, an exhaust valve bridge between two adjacent exhaust valves and between at least one exhaust valve an inlet / outlet valve bridge is arranged in each case adjacent to an adjacent inlet valve, and a first cooling channel is arranged in the region of at least one outlet valve bridge, and a second cooling channel is arranged in the region of at least one inlet / outlet valve bridge, and the first and second cooling channels are arranged in a central cooling region of the Cylinders are fluidly connected to each other.
- AT 506 473 B1 describes a cylinder head for a multi-cylinder internal combustion engine with a coolant jacket comprising the exhaust valves, which has a coolant collecting duct extending in the longitudinal direction of the cylinder head on the exhaust side. Cooling channels are located in the area of the exhaust valve bridge and in the area of the inlet / outlet valve bridges. Since the flow of coolant into the area of the cooling passage of the intake / exhaust valve bridge is on either side of each exhaust valve, flow stagnation and thus overheating of the intake / exhaust valve bridges and the exhaust valve guides may occur.
- the object of the invention is to improve the cooling in the area of the inlet / outlet valve bridges as well as in the region of the outlet valve guides.
- the first sub-channel in the region of an exhaust valve guide and the second sub-channel in the region of an exhaust valve seat of the adjacent exhaust valve are arranged. This makes it possible to provide cooling both in rich in the exhaust valve guide, as well as in the area of the exhaust valve seat to improve.
- the first subchannel and the second subchannel are merged both upstream and downstream of the flow divider.
- the first and second sub-channels are brought together in the region of the first cooling channel.
- the first and the second sub-channel can be merged in the region of a connecting channel of the cooling jacket, which is arranged in the region of a motor transverse plane between two adjacent cylinders or on at least one end side of the cylinder head.
- the connecting channel connects two outlet-side and / or two inlet-side cooling jacket sections of two adjacent cylinders and / or at least one outlet-side cooling jacket section to an inlet-side cooling jacket section.
- the flow division of the second cooling channel thus takes place substantially only in the region of the inlet / outlet valve bridge.
- the coolant flow in the region of the inlet / outlet valve bridge is thus subdivided into two partial flows, wherein the first partial flow flows around the outlet valves through the first partial passage and thus cools the corresponding outlet valve seat.
- the second partial flow of the second sub-channel cools the transition region between intake and exhaust valves.
- the two sub-channels allow a directed flow and a precise cooling of thermally highly stressed areas of the inlet / outlet valve bridge and in particular of the adjacent exhaust valve seat.
- the first cooling channel is flow-connected to the second cooling channel only via the central cooling region, and at least one flow interruption device is arranged at least in a region diametrically opposite the first and / or second cooling channel relative to the outlet valve center is.
- Under flow interruption is understood to mean both a complete interruption of the cooling channel, for example by material input or a lid device, as well as a throttling point or device interrupting the flow.
- first cooling channel and at least one second cooling channel-preferably the first cooling channel and the first sub-channel-together enclose at least one outlet valve guide over an angular range between 180 ° and 300 °, preferably approximately 210 ° to 240 °.
- the second cooling channel is thus freed from the first cooling channel by the flow interruption device in an area facing the outlet longitudinal side wall of the cylinder head.
- This can be prevented that there is a bypass flow between the first and second cooling channel of the coolant in the region of the outside of the cylinder and thus comes to stagnation and / or overheating in the region of the second cooling channel. Due to the higher flow rates, on the one hand, increased heat removal from the region of the outlet valve guides and, on the other hand, improved cooling of the outlet valve seats can be achieved.
- the cylinder head may have an integrated coolant collecting channel extending over at least two cylinders and / or at least one integrated exhaust gas collector extending over at least two cylinders, which is at least partially surrounded by an exhaust gas cooling jacket.
- the first cooling channel of each cylinder can be connected to the coolant collection channel and / or to the exhaust gas cooling jacket via at least one transfer channel.
- the main flow from or to the coolant collection or coolant distributor channel or from or to the exhaust gas cooling jacket of the exhaust manifold takes place via the transfer channel connected to the first cooling channel.
- the coolant can flow in a conventional manner via flow passages in the region of the cylinder head plane from the cooling jacket of the cylinder block in the cooling jacket of the cylinder head or - as usual in so-called top-down cooling systems - flow from the cooling jacket of the cylinder head into the cooling jacket of the cylinder block.
- the production costs can be kept extremely small if the flow dividing device and / or the flow interruption device is formed by a cast wall section of the cylinder head.
- the flow dividing device and the flow interruption device are thus formed by the casting material of the cylinder head itself, with only minor modifications of the casting mold or of the casting cores being required.
- the heat removal from thermally highly stressed areas of the valve bridges, in particular the inlet / outlet valve bridges, and the outlet valve guides can be substantially improved.
- FIG. 1 shows a cooling jacket system of a cylinder head according to the invention having an internal combustion engine in an oblique view.
- Top view shows the cooling jacket in a bottom view
- Figure 4 shows the cooling jacket in a section along the line IV - IV in Fig. 2.
- Figure 5 shows a cylinder head according to the invention in a section along the line V - V in Fig. 2.
- FIG. 6 shows the cooling jacket of a cylinder of the cylinder head according to the invention in an oblique view from above;
- Fig. 7 shows the detail VII of Fig. 8.
- Fig. 8 shows the cooling jacket of a cylinder in an oblique view from below.
- FIG. 1 shows a cooling jacket system 1 of an internal combustion engine with a plurality of cylinders 2, which has a cooling jacket 3 of a cylinder head 4 for cooling of thermally critical areas such as fire deck 5, valve guides 14a, 14b, valve seats 14b, 15b, exhaust valve bridges 7 between the exhaust valves, inlet / Exhaust valve bridges 8 between intake valves and exhaust valves, exhaust ports 9, etc. (Fig. 5).
- the cooling jacket 3 of the cylinder head 4 is in fluid communication with a block cooling jacket 10 of a cylinder block, not shown.
- the cylinder head 4 has two exhaust valves per cylinder 2 and two inlet valves, of which only the exemptions 14 in the cooling jacket 3 for the outlet openings or the exemptions 15 in the cooling jacket 3 for the inlet openings and - in Fig. 5 - the exhaust valve guides 14a and inlet valve guides 15a and exhaust valve seats 14b and intake valve seat 15b are shown.
- the exhaust valve guides 14a are also shown in FIGS. 6 to 8.
- the cylinder head 4 has an integrated exhaust gas collector 16 (see FIG. 5), which is at least partially surrounded by an exhaust gas cooling jacket 17.
- the exhaust gas cooling jacket 17 is in fluid communication with the cooling jacket 3 of the cylinder head 4 via one transfer passage 6 per cylinder 2, wherein the transfer passage 6 per cylinder 2 is connected to a first cooling passage 18 arranged in the region of the exhaust valve bridge 7 between two exhaust valve openings 14.
- a second cooling channel 19 is arranged, which is connected to the first cooling channel 18 in a central, ie near-cylinder cooling region 20.
- the cooling jacket 3 of the cylinder head 4 has an outlet-side cooling jacket section 3a and an inlet-side cooling jacket section 3b, which are fluidly connected to one another in the region of engine transverse planes 23 between adjacent cylinders 2 and on the end faces 4a, 4b of the cylinder head 4 via connecting channels 22.
- Engine transverse plane 23 here denotes a plane extending perpendicularly to the engine longitudinal plane 2b between adjacent cylinders 2 through cylinder axes 2a.
- the second cooling channel 19 is designed to be divided in the region of each inlet / outlet valve bridge 8, wherein a first partial channel 19 a and a second partial channel 19 b are arranged on each side of a flow dividing device 21.
- the in a plan view of the direction indicated by reference numeral 2a cylinder axis, for example sickle-shaped or kidney-shaped flow divider 21 thus divides the second cooling channel 19 into two sub-channels - in a drawn in Fig. 5 above the outlet channel 9 first sub-channel 19a and an oblique in the figures
- the second partial channel 19b which is arranged below the first partial channel 19a, projects from the common flow path upstream of the flow dividing device 21 and opens again downstream into a common flow path downstream of the flow dividing device 21.
- the first part of the channel 19a is arranged in the form of a circular sector partially around the foreign valve guide 14a, whereby an optimal cooling of the exhaust valve guide is achieved.
- the second sub-channel 19b is arranged in the region of the outlet valve seat 14b specifically removes heat from this region of the inlet / outlet valve bridge 8.
- the first and second sub-channels 19a, 19b are each brought together in the region of the first cooling channel 18 on the one hand and in the region of the adjacent connecting channel 22 of the cooling jacket 3 on the other hand.
- Each connecting passage 22 is configured to fluidly connect two exhaust-side cooling jacket portions 3a and / or two inlet-side coolant portions 3b of two adjacent cylinders 2 and / or at least one exhaust-side cooling jacket portion 3a to an inlet-side cooling jacket portion 3b.
- the flow takes place at least in the regions of the engine transverse planes 23 substantially transversely to the engine longitudinal plane 2b spanned by the cylinder axes 2a.
- the first cooling channel 18 is flow-connected to the second cooling channel 19 only via the central cooling region 20, wherein in relation to the outlet opening 14 of the first 18 and / or second cooling channel 19 diametrically opposite region of Cylinder head 2, a flow interruption device 24 is arranged (see Fig. 6 to Fig. 8).
- the flow interruption device 24 is, for example, a blockage or interruption of a region of the second cooling channel 19 surrounding the outlet valves, or a connection of the first 18 to the second cooling channel 19.
- a throttle point or other types of flow interruptions may also be provided.
- bypass flows between the first 18 and second cooling channel 19 can be avoided by the exhaust valve on the side facing away from the first cooling passage 18 side of the exhaust valve guide 14a.
- a defined radial flow in the engine longitudinal direction occurs at high speeds and throughputs locally.
- the cooling in the region of the corresponding inlet / outlet valve bridge 8 can be improved.
- a particularly good heat dissipation can be achieved by combining the flow control device 21 and the flow interruption device 24.
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 |
---|---|---|---|
ATA50376/2015A AT517127B1 (de) | 2015-05-07 | 2015-05-07 | Zylinderkopf für eine brennkraftmaschine |
PCT/AT2016/050127 WO2016176710A1 (de) | 2015-05-07 | 2016-05-04 | Zylinderkopf für eine brennkraftmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3292293A1 true EP3292293A1 (de) | 2018-03-14 |
EP3292293B1 EP3292293B1 (de) | 2020-12-30 |
Family
ID=56403910
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16736760.6A Active EP3292293B1 (de) | 2015-05-07 | 2016-05-04 | Zylinderkopf für eine brennkraftmaschine |
Country Status (5)
Country | Link |
---|---|
US (1) | US10655559B2 (de) |
EP (1) | EP3292293B1 (de) |
CN (1) | CN107667214B (de) |
AT (1) | AT517127B1 (de) |
WO (1) | WO2016176710A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018156682A1 (en) * | 2017-02-24 | 2018-08-30 | Cummins Inc. | Engine cooling system including cooled exhaust seats |
DE102017109185A1 (de) | 2017-04-28 | 2018-10-31 | Volkswagen Aktiengesellschaft | Zylinderkopfgehäuse sowie Verfahren zur Herstellung eines Zylinderkopfgehäuses und Gießkern |
CN110284988B (zh) * | 2018-03-19 | 2022-04-01 | 康明斯公司 | 用于冷却内燃发动机的***和方法 |
WO2022087629A1 (en) * | 2020-10-22 | 2022-04-28 | Southwest Research Institute | Techniques for engine cooling using supercritical fluids and a combustion engine system implementing the same |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3765900B2 (ja) | 1997-02-03 | 2006-04-12 | 本田技研工業株式会社 | 船外機用エンジンの冷却装置 |
FR2786815B1 (fr) * | 1998-12-04 | 2001-01-05 | Renault Sport | Culasses de moteur a combustion interne refroidie par liquide |
JP2002256966A (ja) * | 2001-03-06 | 2002-09-11 | Toyota Motor Corp | シリンダヘッドの冷却構造 |
US7051685B2 (en) * | 2003-10-27 | 2006-05-30 | General Motors Corporation | Cylinder head with integrated exhaust manifold |
AT500442B1 (de) * | 2005-07-19 | 2008-06-15 | Avl List Gmbh | Zylinderkopf für eine brennkraftmaschine |
US7234422B2 (en) * | 2005-09-13 | 2007-06-26 | Gm Global Technology Operations, Inc. | Engine cooling method and apparatus |
DE102005050510A1 (de) * | 2005-10-21 | 2007-04-26 | Bayerische Motoren Werke Ag | Zylinderkopf für eine wassergekühlte Brennkraftmaschine |
DE102006036422A1 (de) * | 2006-08-04 | 2008-02-21 | Bayerische Motoren Werke Ag | Flüssigkeitsgekühlter Zylinderkopf für eine Brennkraftmaschine |
DE102007030482B4 (de) * | 2007-06-30 | 2018-12-20 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Kühlkanäle im Zylinderkopf einer Brennkraftmaschine |
US7784442B2 (en) * | 2007-11-19 | 2010-08-31 | Gm Global Technology Operations, Inc. | Turbocharged engine cylinder head internal cooling |
DE102008047185A1 (de) * | 2008-09-15 | 2010-04-15 | Audi Ag | Kühlmittelströmungsweganordnung eines Zylinderkopfes einer Brennkraftmaschine und Verfahren zu dessen Kühlung |
AT506468B1 (de) * | 2009-03-24 | 2010-12-15 | Avl List Gmbh | Zylinderkopf einer brennkraftmaschine |
AT506473B1 (de) | 2009-04-23 | 2010-12-15 | Avl List Gmbh | Zylinderkopf einer brennkraftmaschine |
JP5553055B2 (ja) * | 2010-06-29 | 2014-07-16 | マツダ株式会社 | 水冷式エンジンの冷却装置 |
US8584628B2 (en) * | 2010-07-14 | 2013-11-19 | Ford Global Technologies, Llc | Engine with cylinder head cooling |
DE102010041105B4 (de) * | 2010-09-21 | 2024-05-23 | Bayerische Motoren Werke Aktiengesellschaft | Kühlmittelmantel für einen flüssigkeitsgekühlten Zylinderkopf |
JP5729367B2 (ja) * | 2012-10-25 | 2015-06-03 | トヨタ自動車株式会社 | シリンダヘッドの冷却構造 |
CN103835830B (zh) * | 2012-11-21 | 2016-06-01 | 重庆长安汽车股份有限公司 | 一种交叉式三缸增压发动机气缸盖的冷却水套 |
-
2015
- 2015-05-07 AT ATA50376/2015A patent/AT517127B1/de not_active IP Right Cessation
-
2016
- 2016-05-04 US US15/570,076 patent/US10655559B2/en not_active Expired - Fee Related
- 2016-05-04 EP EP16736760.6A patent/EP3292293B1/de active Active
- 2016-05-04 WO PCT/AT2016/050127 patent/WO2016176710A1/de active Application Filing
- 2016-05-04 CN CN201680026380.3A patent/CN107667214B/zh active Active
Also Published As
Publication number | Publication date |
---|---|
CN107667214B (zh) | 2020-01-14 |
US10655559B2 (en) | 2020-05-19 |
WO2016176710A1 (de) | 2016-11-10 |
AT517127A1 (de) | 2016-11-15 |
CN107667214A (zh) | 2018-02-06 |
US20180106213A1 (en) | 2018-04-19 |
EP3292293B1 (de) | 2020-12-30 |
AT517127B1 (de) | 2019-12-15 |
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