WO2021037783A1 - Kühlungsoptimierter zylinderkopf und optimiertes zylinderkopfkühlverfahren - Google Patents
Kühlungsoptimierter zylinderkopf und optimiertes zylinderkopfkühlverfahren Download PDFInfo
- Publication number
- WO2021037783A1 WO2021037783A1 PCT/EP2020/073605 EP2020073605W WO2021037783A1 WO 2021037783 A1 WO2021037783 A1 WO 2021037783A1 EP 2020073605 W EP2020073605 W EP 2020073605W WO 2021037783 A1 WO2021037783 A1 WO 2021037783A1
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- WIPO (PCT)
- Prior art keywords
- coolant
- cylinder head
- channel
- flow
- partial
- Prior art date
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Classifications
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- 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
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- 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
- F01P3/16—Arrangements for cooling other engine or machine parts for cooling fuel injectors or sparking-plugs
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- 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
- F02F1/242—Arrangement of spark plugs or injectors
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- 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
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- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
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- 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
- F01P3/00—Liquid cooling
- F01P3/02—Arrangements for cooling cylinders or cylinder heads
- F01P2003/028—Cooling cylinders and cylinder heads in series
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- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/85—Mounting of fuel injection apparatus
- F02M2200/858—Mounting of fuel injection apparatus sealing arrangements between injector and engine
Definitions
- the invention relates to a cylinder head for covering a combustion chamber of an internal combustion engine and a method for cooling a cylinder head.
- Cylinder heads of internal combustion engines can, for example, have a water jacket for cooling.
- the water jacket can cool thermally highly stressed areas of the cylinder head.
- valve land areas which are arranged between the individual gas ducts of the cylinder head and between the fire deck and the intermediate deck of the cylinder head, may require particularly effective cooling.
- the fire deck can be cooled with the combustion chamber side of the cylinder head.
- the valve seats on the combustion chamber side for the valves arranged in the gas guide channels can be cooled in this way.
- a fuel injector or a spark plug can have a comparatively large cooling requirement.
- DE 38 02 886 A1 discloses a cylinder head for water-cooled internal combustion engines with a water jacket, a central receiving hole for an injection nozzle or spark plug, several valves and holes in the area of the water jacket through which cooling water is supplied to the Ste gene between the valves.
- DE 4420 130 C1 discloses a cylinder head with four valves and a centrally arranged injection valve for an internal combustion engine. Coolant bores run in close proximity to inlet and outlet channels from a circumference of the cylinder head to an interior water space of the cylinder head.
- the invention is based on the object of creating an alternative and / or improved technique for cooling a cylinder head.
- the invention provides a cylinder head for covering a combustion chamber of an internal combustion engine.
- the cylinder head has a first and second exhaust port for leading from exhaust gas from the combustion chamber and a first and second intake port for supplying combustion air to the combustion chamber.
- the cylinder head has a (e.g. central) receptacle for a mounting sleeve, a fuel! injector or a spark plug.
- the cylinder head has a, preferably single, (z. B. cylinder head bottom side conditions) coolant inlet for connection to a coolant source.
- the cylinder head has a first coolant channel which is arranged (e.g. in a valve land area) between the first and second outlet channels, a second coolant channel which is arranged (e.g.
- the first, second and third coolant ducts are arranged (for example directly) downstream of the coolant inlet and coolant from the coolant inlet can flow through them in parallel.
- the cylinder head has a coolant space which is designed to cool the receptacle and is arranged downstream of the first, second and third coolant ducts.
- the cylinder head has an upper coolant jacket which is arranged downstream of the coolant space.
- the cylinder head enables the inflowing coolant to first cool the valve web areas, which are subject to particularly high thermal loads, between the exhaust ports and between one exhaust port and one intake port. Immediately afterwards, the fuel injector or the spark plug, which also require a lot of cooling, can be cooled directly. The cooling of the fuel! The injector or the spark plug takes place while the coolant flows upward into the upper coolant jacket in order to cool the valve guides there, for example.
- cooling water can be used as the coolant.
- the first, second and third coolant channel and the coolant inlet are in fluid connection with one another in such a way that a coolant flow passing through the coolant inlet is divided into (e.g. exactly) three coolant partial flows, with a first coolant partial flow preferably flowing through the first coolant channel , a second coolant partial flow flows through the second coolant channel and / or a third coolant partial flow flows through the third coolant channel.
- the first, second and / or third coolant ducts are designed such that the first coolant partial flow is greater than the second coolant partial flow and / or greater than the third coolant partial flow. It is possible for the second partial coolant flow and the third partial coolant flow to be essentially the same size. It is also possible that the first Partial coolant flow in a range between 40% and 60%, preferably around 50%, of the incoming coolant flow. It is also possible that the second coolant partial flow is in a range between 15% and 35%, preferably around 25%, of the incoming coolant flow, and / or the third coolant partial flow is in a range between 15% and 35%, preferably around 25% , of the incoming coolant flow. In this way it can be ensured, for example, that the thermally most heavily loaded valve land area between the two outlet channels is cooled the most.
- first, second and / or third coolant channel and the coolant space are in fluid connection with one another in such a way that at least part of a combined coolant flow from the first, second and / or third coolant channel flows through the coolant space.
- the coolant space is arranged in such a way that coolant flowing in the coolant space enters the receptacle, a mounting sleeve housed in the receptacle (e.g. for a fuel injector or a spark plug), a fuel injector housed in the receptacle or one housed in the receptacle Spark plug in order to flush, preferably directly.
- a mounting sleeve housed in the receptacle e.g. for a fuel injector or a spark plug
- a fuel injector housed in the receptacle or one housed in the receptacle Spark plug in order to flush, preferably directly.
- the coolant space is annular and / or surrounds the receptacle ko axially.
- the upper coolant jacket is arranged between an intermediate deck and an upper deck of the cylinder head. It is possible for the upper coolant jacket to be annular and / or for the upper coolant jacket to be designed for cooling valve guides of the cylinder head.
- the coolant space and the upper coolant jacket are in fluid communication with one another in such a way that coolant flows from the first, second and thirddemit telkanal at least partially upward through the coolant chamber to the upper coolant jacket.
- the cylinder head has a fourth coolant channel which is arranged between the first inlet channel and the second inlet channel and (for example directly) downstream of the first, second and third coolant channel. So this too can Valve land area can be effectively cooled.
- the fourth coolant channel can preferably be arranged between a fire deck and an intermediate deck of the cylinder head.
- the fourth coolant channel can be arranged for cooling a fire deck of the cylinder head, the first and second inlet channels and / or valve seats of the first and the second inlet channel.
- the coolant space and the fourth coolant channel are in fluid connection with the first, second and third coolant channels that a combined coolant flow from the first, second and third coolant channel (e.g. only) into a fourth partial coolant flow through the fourth coolant channel and is divided into a fifth partial coolant flow through the coolant space.
- the fourth coolant channel and the coolant space are designed in such a way that the fifth partial coolant flow is greater than or, to the west, the same size as the fourth partial coolant flow. It is possible that the fifth coolant partial flow is in a range between 50% and 75% of the combined coolant flow and / or the fourth coolant partial flow is in a range between 25% and 50% of the combined coolant flow. It can thus be ensured that the cooling required by the fuel injector or the spark plug and the valve guides can be provided by the fifth partial coolant flow.
- the cylinder head also has a preferably single coolant outlet (e.g. cylinder head bottom side) which is arranged (e.g. directly) downstream of the upper coolant jacket and the fourth coolant channel.
- a preferably single coolant outlet e.g. cylinder head bottom side
- a transition from the upper coolant jacket to the coolant outlet is arranged on the same side of the cylinder head as the coolant outlet. It is possible that an overflow from the upper coolant jacket and the fourth coolant channel merge adjacent to or next to the coolant outlet. Alternatively or additionally, the transition can be arranged on a side of the cylinder head opposite the coolant inlet. In this way, the lowest possible pressure loss can be brought about, so that the desired mass flow for the fifth partial coolant flow can be achieved.
- the coolant outlet is in fluid connection with the upper coolant jacket and the fourth coolant channel such that the fifth coolant part stream from the upper coolant jacket and the fourth coolant part stream from the fourth coolant channel combine and flow to the coolant outlet.
- the first coolant channel is arranged for cooling a fire deck of the cylinder head, the first and second exhaust ports and / or valve seats of the first and second exhaust ports.
- the second coolant channel is arranged for cooling a fire deck of the cylinder head, the second outlet channel, the first inlet channel and / or valve seats of the second outlet channel and the first inlet channel.
- the third coolant channel is arranged for cooling a fire deck of the cylinder head, the first exhaust port, the second intake port and / or the valve seats of the first exhaust port and the second intake port.
- the first, second and / or third coolant channel is arranged between a fire deck and an intermediate deck of the cylinder head.
- a lower coolant jacket of the cylinder head has the first, second, third and / or fourth coolant channel.
- the coolant space is arranged between a lower coolant jacket of the cylinder head and the upper coolant jacket
- the lower coolant jacket is arranged between a fire deck and an intermediate deck of the cylinder head.
- the upper coolant jacket prefferably be arranged between an intermediate deck and an upper deck of the cylinder head.
- the first coolant channel, the second coolant channel, the third coolant channel, the fourth coolant channel, the coolant inlet, the coolant outlet, the coolant space, the upper coolant jacket, the lower coolant jacket and / or the transition can be cast.
- coolant it is possible for coolant to flow through the first, second and / or third coolant channel with respect to a central axis of the cylinder head in a radial direction inward and / or the fourth coolant channel to be flowed through in a radial direction outward with respect to the central axis. It is possible for the coolant space to be arranged coaxially to a central axis of the cylinder head.
- the invention also relates to a motor vehicle, preferably a utility vehicle (e.g. trucks or omnibus), with a cylinder head as disclosed herein.
- a motor vehicle preferably a utility vehicle (e.g. trucks or omnibus), with a cylinder head as disclosed herein.
- cylinder head as disclosed herein for passenger cars, large engines, all-terrain vehicles, stationary engines, marine engines, and the like.
- the invention also relates to a method for cooling a cylinder head, preferably as disclosed herein.
- the method includes supplying a coolant flow to the cylinder head (for example by means of a coolant inlet).
- the method comprises dividing the coolant stream into a first coolant substream, a second coolant substream and a third coolant substream.
- the method includes cooling an area between a first outlet channel and a second outlet channel of the cylinder head by means of the first coolant partial flow (for example by means of a first coolant channel).
- the method includes cooling an area between the second outlet channel and a first inlet channel of the cylinder head by means of the second coolant partial flow (for example by means of a second coolant channel).
- the method includes cooling of an area between the first outlet channel and a second inlet channel of the cylinder head by means of the third coolant partial flow (for example by means of a third coolant channel).
- the method includes combining the first, second and third coolant substreams.
- the method has a division of the combined coolant flow into a fourth coolant partial flow and a fifth coolant partial flow.
- the method includes cooling an area around an assembly sleeve, a fuel injector or a spark plug by means of the fifth partial coolant flow (e.g. by means of a coolant chamber) and then cooling an upper coolant jacket and / or valve guides for valves of the cylinder head by means of the fifth partial coolant flow on.
- the method preferably also includes cooling of an area between the first inlet channel and the second inlet channel by means of the fourth partial coolant flow (for example by means of a fourth coolant channel).
- the method can further comprise a combination of the fourth coolant partial flow and the fifth coolant partial flow, for example after cooling the area between see the first inlet channel and the second inlet channel by means of the fourth coolant partial flow and / or after cooling the upper coolant jacket and / or the valve guides by means of the fifth coolant partial flow.
- the method can further include discharging the combined coolant flow from the cylinder head (for example by means of a coolant outlet).
- FIG. 1 shows a cross-sectional view of a cylinder head according to an exemplary embodiment of the present disclosure
- Figure 2 is a longitudinal sectional view through the exemplary cylinder head.
- FIGS. 1 and 2 show a cylinder head 10 in different sectional views.
- the Fi gur 1 shows a cross-sectional view at the level of the valve webs of the cylinder head 10, so un danger between the intermediate deck and the fire deck of the cylinder head 10, with Magnoliarich device to the fire deck or down.
- FIG. 2 shows a longitudinal sectional view which connects a coolant inlet with a coolant outlet of the cylinder head 10.
- the cylinder head 10 is designed to cover a combustion chamber 12 of an internal combustion engine 14 (see FIG. 2).
- the cylinder head 10 can be screwed to an engine block (crankcase) 16 of the internal combustion engine 14 by means of several bolts.
- the internal combustion engine 14 can preferably be included in a motor vehicle, preferably a commercial vehicle, for driving the motor vehicle.
- the internal combustion engine 14 can be designed, for example, as an in-line engine or as a V-engine.
- the cylinder head 10 is designed as a single-cylinder cylinder head for covering a single combustion chamber 12 of the internal combustion engine 14. It is also possible that the Zylin derkopf 10 as a multi-cylinder cylinder head to cover several combustion chambers the internal combustion engine 14 is executed.
- the cylinder head 10 can preferably be cast.
- the cylinder head 10 has two inlet ducts 18, 20 and two outlet ducts 22, 24.
- Combustion air can be supplied to the combustion chamber 12 by means of the two inlet ducts 18.
- Exhaust gas can be discharged from the combustion chamber 12 by means of the two outlet channels 22, 24.
- the channels 18, 20, 22, 24 each have an opening on one side of the combustion chamber of the cylinder head 10.
- the openings can each be closed by a valve (not shown).
- the valves are preferably designed as poppet valves.
- the openings can each have a valve seat for the respective valve.
- Valve seat rings can be used in the valve seats. To open the valves, they can lift off the respective valve seats (or valve seat inserts). To close the valves, they can contact the respective valve seat (or valve seat ring) in a sealing manner.
- the valves can be operated, for example, via a mechanical valve drive.
- the cylinder head 10 has a receptacle 26.
- the receptacle 26 can be arranged centrally in the cylinder head 10.
- the receptacle 26 can have an opening on the combustion chamber side.
- the opening of the receptacle 26 can preferably be arranged centrally between the openings of the channels 18, 20, 22, 24.
- the receptacle 26 can be designed to receive a desired component (not shown). For example, the receptacle 26 for receiving a fuel! injectors or a spark plug.
- the cylinder head 10 has a coolant jacket 36, 38, preferably a water jacket, for dissipating heat.
- the coolant jacket 36, 38 can be cast directly with the cylinder head 10.
- the coolant jacket 36, 38 is formed from a plurality of coolant spaces and coolant channels that are in fluid communication with one another.
- the coolant jacket 36, 38 has a preferably single coolant inlet 28 and a preferably single coolant outlet 30 (see FIG. 2). Coolant can be supplied to the coolant jacket 36, 38 via the coolant inlet 28. Via thedemit telaustritt 30 (heated) coolant can be removed from the coolant jacket 36, 38.
- the coolant inlet 28 and the coolant outlet 30 are in fluid connection with one another via the multiple coolant spaces and coolant channels of the coolant jacket 36, 38.
- the coolant inlet 28 and the coolant outlet 30 are preferably arranged on opposite sides of the cylinder head 10.
- the coolant inlet 28 is connected to a coolant supply channel 32 of the engine block 16.
- the coolant supply channel 32 serves as a coolant source or pressure source.
- the coolant supply channel 32 can, for example, be designed as a coolant distribution strip.
- the coolant supply channel 32 can be supplied with coolant, preferably cooling water, by means of a coolant pump.
- the coolant outlet 30 is connected to a coolant discharge channel 34 of the engine block 16.
- the coolant discharge passage 34 serves as a pressure sink.
- the coolant discharge channel 34 can be designed, for example, as a Sam melkanal. Different arrangements for the coolant inlet 28 and / or the coolant outlet 30 are also possible.
- the coolant jacket 36, 38 can be divided into a lower coolant jacket 36 and an upper coolant jacket 38.
- the lower coolant jacket 36 is arranged between a fire deck 40 and an intermediate deck 42 of the cylinder head 10.
- the upperdeffenman tel 38 is arranged between the intermediate deck 42 and an upper deck 44 of the cylinder head 10 to.
- the coolant inlet 28 opens into the lower coolant jacket 36.
- the lower coolant jacket 36 opens into the coolant outlet 30.
- the lower coolant jacket 36 has four, preferably cast, coolant channels 46, 48, 50, 52.
- the four coolant channels 46, 48, 50, 52 are essentially arranged between the fire deck 40 and the intermediate deck 42.
- the first coolant channel 46 is arranged in a valve web area 54 between the two outlet channels 22, 24.
- the second coolant channel 48 is arranged in a valve web area 56 between the second outlet channel 24 and the first inlet channel 18.
- the third coolant channel 50 is arranged in a valve web area 58 between the second inlet channel 20 and the first outlet channel 22.
- the fourth coolant channel 52 is arranged in a valve land area 60 between the first inlet channel 18 and the second inlet channel 20.
- the coolant channels 46, 48, 50 can have coolant flowing through them in a radially inward direction with respect to a central axis of the cylinder head 10.
- the fourth coolant channel 52 can be flowed through with coolant in a direction radially outward with respect to the central axis.
- the coolant channels 46, 48, 50 are arranged downstream of the coolant inlet 28.
- the fourth coolant channel 52 is arranged downstream of the coolant channels 46, 48, 50.
- Coolant flowing through the first coolant channel 46 cools, in particular, the fire deck 40, the two outlet channels 22, 24 and their valve seats. Through the second coolant channel ok
- Coolant flowing through the third coolant channel 50 cools in particular the fire deck 40, the second inlet channel 20, the first outlet channel 22 and the valve seats of the channels 20, 22. Coolant flowing through the fourth coolant channel cools in particular the fire deck 40, the two inlet channels 18, 20 and their valve seats.
- the upper coolant jacket 38 can be embodied in an annular manner.
- the upper coolant jacket 38 can surround the receptacle 26 coaxially and at a distance. Coolant flowing through the upper coolant jacket 38 cools in particular the channels 18, 20, 22, 24 and valve guides for the valves of the channels 18, 20, 22, 24.
- the lower coolant jacket 36 and the upper coolant jacket 38 are (for example only) in fluid communication with one another via a coolant space 62 and an overflow 64.
- the coolant space 62 is arranged downstream of the channels 20, 22, 24.
- the coolant space 62 is arranged upstream of the upper coolant jacket 38.
- the coolant space 62 can preferably be annular and surround the receptacle 26 coaxially. Coolant flowing through thedemit telraum 62 can, for example, wash directly around a mounting sleeve 66 (for example for a fuel injector or a spark plug), which is received in the receptacle 26, and thereby cool.
- the mounting sleeve 66 can be arranged in the receptacle 26 in a sealed manner.
- the coolant space 62 is flowed through from below by the lower coolant jacket 36 upwards to the upper coolant jacket 38.
- the transition 64 is arranged downstream of the upper coolant jacket 38.
- the transition 64 is preferably arranged on the side of the cylinder head 10 on which the coolant outlet 30 is arranged. This is preferably that side of the cylinder head 10 which is opposite to the side of the cylinder head on which the coolant inlet 28 is arranged.
- the transition 64 is flowed through from above by the upper coolant jacket 38 down to the lower coolant jacket 36.
- the coolant is supplied via the coolant supply channel 32.
- the coolant flows from the coolant supply channel 32 in a coolant flow (for example total coolant flow) K1 (see arrow in FIGS. 1 and 2) into the coolant inlet 28.
- a coolant flow for example total coolant flow
- the coolant flow K1 is divided directly into three coolant partial flows T1, T2 and T3.
- the first coolant partial flow T 1 flows through the first coolant channel 46 and thereby cools the surrounding areas.
- the second coolant partial flow T2 flows through the second coolant channel 48 and also cools the surrounding areas.
- the third coolant partial flow T3 flows through the third coolant channel 50 and also cools the surrounding areas.
- the valve web area 54 is arranged between the two outlet channels 22, 24, which lead 14 hot exhaust gas during operation of the internal combustion engine. The valve web area 54 can therefore be subjected to particularly high thermal loads.
- the two valve web areas 56 and 58 also each adjoin one of the two outlet channels 22, 24 and are therefore also subject to high thermal loads.
- the coolant channels 46, 48 and 50 are preferably dimensioned and arranged relative to one another in such a way that, taking into account the pressure losses that occur, the first coolant partial flow T1, which flows through the thermally most heavily loaded valve web area 54, is greatest in order to develop the greatest cooling effect.
- the first coolant partial flow T1 can be in a range between 40% and 60%, preferably around 50%, of the incoming coolant flow K1, for example based on a mass flow of the coolant.
- the second coolant partial flow and the third coolant partial flow T3 can, for example, each be in a range between 15% and 35%, preferably around 25%, of the incoming coolant flow K1, for example based on a mass flow of the coolant.
- the coolant partial flows T1, T2 and T3 can recombine in a central region of the lower coolant jacket 36.
- the central area can be designed, for example, as an annular space that surrounds the receptacle 26.
- the combined coolant flow (e.g. total coolant flow) can in turn be divided into two partial coolant flows T4 and T5.
- the fourth coolant partial flow T4 flows through the fourth coolant channel 52 and cools the surrounding areas in the process.
- the valve land area 60 which surrounds the fourth coolant channel 52, is less thermally loaded than the valve land areas 54, 56, 58, since the valve land area 60 only borders on the two inlet channels 18, 20, which supply relatively cool combustion air to the combustion chamber 12 during operation .
- the fifth partial coolant flow T5 flows from the central area of the lower coolant jacket 36 upward through the coolant chamber 62 into the upper coolant jacket 38. When flowing through the coolant chamber 62, coolant can flow directly or indirectly around the component arranged in the receptacle 26 and thereby be cooled.
- the assembly sleeve 66 can be flowed around directly so that the components in the assembly sleeve 66, for example the fuel injector or the spark plug, are effectively cooled.
- the fuel injector which is subject to high thermal loads, can be effectively cooled with the coolant partial flow T5, which is still comparatively cool.
- the fifth partial coolant flow T5 After flowing through the coolant space 62, the fifth partial coolant flow T5 reaches the upper coolant jacket 38 and cools the surrounding areas. The fifth coolant partial flow T5 ultimately flows through the transition 64 from the upper coolant jacket 38 back into the lower coolant jacket 36. There, the fourth coolant partial flow T4 and the fifth coolant partial flow T5 combine with one another. The thus combined coolant flow (e.g. total flow of coolant) K2 leaves the cylinder head 10 through the coolant outlet 30 into the coolant discharge duct 34 of the engine block 16.
- the coolant flow (e.g. total flow of coolant) K2 leaves the cylinder head 10 through the coolant outlet 30 into the coolant discharge duct 34 of the engine block 16.
- the cooling requirement to be covered by the fifth coolant partial flow T5 with regard to the assembly sleeve 66 and the upper coolant jacket 38 can be greater than the cooling requirement to be covered by the fourth coolant partial flow T4 with regard to the valve web area 60 the fourth coolant channel 52 can be dimensioned and arranged relative to one another in such a way that, taking into account the pressure losses that occur, the fifth partial coolant flow T5 is greater than or at least the same size as the fourth partial coolant flow T4.
- the fifth coolant partial flow T5 can preferably be in a range between 50% and 75% of the previously combined coolant flow from the coolant partial flows T1, T2 and T3, e.g. B. based on a mass flow of the coolant.
- the fourth coolant substream T4 can be in a range between 25% and 50% of the combined coolant flow from the coolant substreams T1, T2 and T3, e.g. B. be based on a mass flow of the coolant.
- the features of the subclaims are also independent of all the features of independent claim 1 and, for example, independent of the Merkma len with regard to the presence and / or configuration of the first and second outlet channels, the first and second inlet channels, the receptacle, the coolant inlet, the first coolant channel, the second coolant channel, the third coolant channel and / or the coolant space of the independent claim 1 disclosed.
- All range specifications herein are to be understood as disclosed in such a way that all values falling within the respective range are disclosed individually, e.g. B. also as the respectively preferred narrower outer boundaries of the respective area.
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- 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
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20764046.7A EP4022181A1 (de) | 2019-08-27 | 2020-08-24 | Kühlungsoptimierter zylinderkopf und optimiertes zylinderkopfkühlverfahren |
CN202080055489.6A CN114174659A (zh) | 2019-08-27 | 2020-08-24 | 冷却优化的气缸盖和优化的气缸盖冷却方法 |
BR112021022620A BR112021022620A2 (pt) | 2019-08-27 | 2020-08-24 | Cabeça de cilindro para cobrir uma câmara de combustão de um motor de combustão interna, veículo motorizado e método para resfriar uma cabeça de cilindro |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019006034.2 | 2019-08-27 | ||
DE102019006034.2A DE102019006034A1 (de) | 2019-08-27 | 2019-08-27 | Kühlungsoptimierter Zylinderkopf und optimiertes Zylinderkopfkühlverfahren |
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WO2021037783A1 true WO2021037783A1 (de) | 2021-03-04 |
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PCT/EP2020/073605 WO2021037783A1 (de) | 2019-08-27 | 2020-08-24 | Kühlungsoptimierter zylinderkopf und optimiertes zylinderkopfkühlverfahren |
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EP (1) | EP4022181A1 (de) |
CN (1) | CN114174659A (de) |
BR (1) | BR112021022620A2 (de) |
DE (1) | DE102019006034A1 (de) |
WO (1) | WO2021037783A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN113236434A (zh) * | 2021-04-27 | 2021-08-10 | 重庆隆鑫机车有限公司 | 冷却水套及发动机 |
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DE3802886A1 (de) | 1987-02-04 | 1988-08-18 | Avl Verbrennungskraft Messtech | Zylinderkopf fuer wassergekuehlte brennkraftmaschinen |
US4889080A (en) * | 1987-05-26 | 1989-12-26 | Kabushiki Kaisha Komatsu Seisakusho | Cylinder head for an internal combustion engine |
JPH0533640A (ja) * | 1991-07-24 | 1993-02-09 | Yanmar Diesel Engine Co Ltd | 水冷式内燃機関のシリンダヘツド |
JPH0674043A (ja) * | 1992-08-24 | 1994-03-15 | Daihatsu Motor Co Ltd | 四弁式内燃機関におけるシリンダヘッドの構造 |
DE4420130C1 (de) | 1994-06-09 | 1995-11-16 | Mtu Friedrichshafen Gmbh | Zylinderkopf für Brennkraftmaschine |
AT6654U1 (de) * | 2002-10-31 | 2004-01-26 | Avl List Gmbh | Zylinderkopf für eine flüssigkeitsgekühlte mehrzylinder-brennkraftmaschine |
DE10331918A1 (de) * | 2002-07-23 | 2004-02-26 | Avl List Gmbh | Zylinderkopf für eine flüssigkeitsgekühlte Mehrzylinder-Brennkraftmaschine |
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JP2941123B2 (ja) * | 1992-08-24 | 1999-08-25 | ダイハツ工業株式会社 | 四弁式内燃機関におけるシリンダヘッドの構造 |
DE112004002081B4 (de) * | 2003-11-03 | 2016-09-15 | Avl List Gmbh | Brennkraftmaschine |
AT510857B1 (de) * | 2011-01-27 | 2012-07-15 | Avl List Gmbh | Flüssigkeitsgekühlte brennkraftmaschine |
AT511601B1 (de) * | 2011-07-28 | 2013-01-15 | Avl List Gmbh | Zylinderkopf mit flüssigkeitskühlung |
GB2548835B (en) * | 2016-03-29 | 2018-04-18 | Ford Global Tech Llc | A cooling system |
JP6624102B2 (ja) * | 2017-02-06 | 2019-12-25 | トヨタ自動車株式会社 | エンジンのシリンダヘッド |
-
2019
- 2019-08-27 DE DE102019006034.2A patent/DE102019006034A1/de active Pending
-
2020
- 2020-08-24 EP EP20764046.7A patent/EP4022181A1/de active Pending
- 2020-08-24 CN CN202080055489.6A patent/CN114174659A/zh active Pending
- 2020-08-24 BR BR112021022620A patent/BR112021022620A2/pt unknown
- 2020-08-24 WO PCT/EP2020/073605 patent/WO2021037783A1/de unknown
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DE3802886A1 (de) | 1987-02-04 | 1988-08-18 | Avl Verbrennungskraft Messtech | Zylinderkopf fuer wassergekuehlte brennkraftmaschinen |
US4889080A (en) * | 1987-05-26 | 1989-12-26 | Kabushiki Kaisha Komatsu Seisakusho | Cylinder head for an internal combustion engine |
JPH0533640A (ja) * | 1991-07-24 | 1993-02-09 | Yanmar Diesel Engine Co Ltd | 水冷式内燃機関のシリンダヘツド |
JPH0674043A (ja) * | 1992-08-24 | 1994-03-15 | Daihatsu Motor Co Ltd | 四弁式内燃機関におけるシリンダヘッドの構造 |
DE4420130C1 (de) | 1994-06-09 | 1995-11-16 | Mtu Friedrichshafen Gmbh | Zylinderkopf für Brennkraftmaschine |
DE10331918A1 (de) * | 2002-07-23 | 2004-02-26 | Avl List Gmbh | Zylinderkopf für eine flüssigkeitsgekühlte Mehrzylinder-Brennkraftmaschine |
AT6654U1 (de) * | 2002-10-31 | 2004-01-26 | Avl List Gmbh | Zylinderkopf für eine flüssigkeitsgekühlte mehrzylinder-brennkraftmaschine |
Cited By (1)
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CN113236434A (zh) * | 2021-04-27 | 2021-08-10 | 重庆隆鑫机车有限公司 | 冷却水套及发动机 |
Also Published As
Publication number | Publication date |
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EP4022181A1 (de) | 2022-07-06 |
BR112021022620A2 (pt) | 2022-01-04 |
CN114174659A (zh) | 2022-03-11 |
DE102019006034A1 (de) | 2021-03-04 |
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