CN108691684A - Cylinder crankcase and internal combustion engine with this cylinder crankcase - Google Patents
Cylinder crankcase and internal combustion engine with this cylinder crankcase Download PDFInfo
- Publication number
- CN108691684A CN108691684A CN201810272498.5A CN201810272498A CN108691684A CN 108691684 A CN108691684 A CN 108691684A CN 201810272498 A CN201810272498 A CN 201810272498A CN 108691684 A CN108691684 A CN 108691684A
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- China
- Prior art keywords
- cylinder
- cooling duct
- cooling
- cylinder crankcase
- intermediate bulkhead
- 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.)
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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
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
- F01P7/164—Controlling of coolant flow the coolant being liquid by thermostatic control by varying pump speed
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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
- F02F1/02—Cylinders; Cylinder heads having cooling means
- F02F1/10—Cylinders; Cylinder heads having cooling means for liquid cooling
- F02F1/14—Cylinders 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
- F01P3/00—Liquid cooling
- F01P3/02—Arrangements for cooling cylinders or cylinder heads
- F01P2003/021—Cooling cylinders
-
- 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
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
- F01P5/12—Pump-driving arrangements
- F01P2005/125—Driving auxiliary pumps electrically
-
- 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
- F02F1/02—Cylinders; Cylinder heads having cooling means
- F02F1/10—Cylinders; Cylinder heads having cooling means for liquid cooling
- F02F2001/104—Cylinders; Cylinder heads having cooling means for liquid cooling using an open deck, i.e. the water jacket is open at the block top face
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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
Cylinder crankcase according to the invention includes the first cylinder (12a) and at least one second cylinder (12b), first cylinder and at least one second cylinder are surrounded and be separated from each other by common intermediate bulkhead (16) by the cylinder block (14) that integral type manufactures, it is characterized in that, it is configured in the cylinder block (14) of integral type manufacture at least one with along the circumferential direction entirely around the first cooling duct (18a) of the helical segments (20a) of the first cylinder (12a), and it is configured in the cylinder block (14) of integral type manufacture with along the circumferential direction entirely around the second cooling duct (18b) of the helical segments (20b) of the second cylinder (12b).
Description
Invention field
The present invention relates to a kind of cylinder crankcases as described in the preamble according to claim 1.The invention particularly relates to
A kind of cylinder crankcase with the first cylinder and at least one second cylinder, first cylinder and at least one second cylinder
It is surrounded and be separated from each other by common intermediate bulkhead by the cylinder block of monomer-type manufacture.In addition, the present invention relates to a kind of tools
There is the internal combustion engine of this cylinder crankcase.
Background technology
This heated from that can occur in the region of intermediate bulkhead stronger material in cylinder crankcase known to practice,
Especially when the water-cooled jacket of the modular whole cylinders for surrounding cylinder crankcase is only arranged.If possessed by intermediate bulkhead
Temperature is apparently higher than the temperature of cylinder block rest part, then cylinder will produce non-uniform deformation.This results in such again
Disadvantage is arranged in the increased friction of the piston ring on piston in piston cylinder.On the other hand, the consumption of lubricating oil of engine increases
Add, because piston ring makes the combustion chamber in cylinder less efficiently be sealed with respect to crankcase.
From a kind of tool known to 198 18 589 A1 of DE, there are two the internal combustion engines of cylinder operation set, are run in the two cylinders
Partition board there are one extending between set.For cooled partition, in the internal combustion engine, the cross on top is disposed between cylinder operation set
To channel, cooled liquid flows through.Cooling liquid flows into meander-like jagged cooling in other words from interconnection from upside
Channel, the cooling duct only extends on a part of circumference of cylinder operation set respectively, and flows through these from top to bottom
Cooling duct.The shortcomings that this internal combustion engine is it cannot realize the uniform cooling that cylinder operation covers in whole circumference.
DE3629671A1 discloses a kind of internal combustion engine with liquid cooling cylinder operation set, wherein cylinder operation set quilt
Spiral cooling chamber surrounds, the cooling chamber by the outside of cylinder operation set the plate hull shape arranged at.Such cooling chamber can be simple
Ground manufactures, but since there is no the space for placement plate shell, so cannot have integrally manufactured intermediate bulkhead with above-mentioned
Cylinder crankcase implement together.
Invention content
Technical problem to be solved by the present invention lies in provide a kind of gas as described in the preamble according to claim 1
Cylinder crankshaft case, easy to manufacture realize the uniform cooling of effective cooling and whole upper cylinder of at least one intermediate bulkhead.
The technical problem solves according to the invention through the features of claim 1.It is described in conjunction with dependent claims
The other embodiment of the present invention and advantage.
Cylinder crankcase according to the present invention includes the first cylinder and at least one second cylinder, first cylinder and extremely
Few second cylinder is surrounded and be separated from each other by common intermediate bulkhead by the cylinder block that integral type manufactures.In this feelings
Under condition, in the cylinder block of integral type manufacture, the first cooling duct is formed with along the circumferential direction entirely around the spiral shell of the first cylinder
Revolve section.In addition, in the cylinder block of integral type manufacture, the second cooling duct is formed with along the circumferential direction entirely around the second gas
The helical segments of cylinder.Using cylinder crankcase according to the present invention, especially because in a circumferential direction entirely around the first gas
The helical segments of cylinder and the second cylinder especially can efficiently and uniformly cool down the wall around cylinder.On the one hand advantageously, the
One cooling duct and the second cooling duct one-piece construction are in cylinder block.
The unitary design of at least two cooling ducts especially can be by using suitable core or the mould of medium-sized 3D printing
Technique processed is realized.
High functional reliability is realized in the design of the present invention, is especially being related to blow-by, is especially being related to adjacent elements
Seam region in blow-by in the case of, the blow-by by multiple element in being formed of being known from the state of the art
Occur due to manufacturing technology (assembling or foozle) in cooling duct, or during operation (especially because internal combustion engine
Damaged caused by heat and other mechanical alternans stress during operation) and occur.
In addition, being had the following advantages in cylinder crankcase according to the present invention:Pass through cooling in scope of the invention
Channel is suitably laid out in the region of intermediate bulkhead, that is, in the region of the wall segment between two cylinders, and first is cold
But channel and the second cooling duct can generate cooling effect on the direction of two cylinders.When in common intermediate bulkhead area
Wall thickness in domain (along the circumferential direction observes) smaller compared with other wall segments and intermediate bulkhead is due to this reason than cylinder song
When wall section in other neighboring areas of the cylinder of axle box quickly heats, above-mentioned layout is especially advantageous.
In addition, the intermediate bulkhead of cylinder crankcase according to the present invention is although wall thickness is generally relatively small, due to cold
But known solution (has the cooling duct formed by multiple element to the one-piece construction in channel compared with the prior art
And/or with the cooling duct formed by plank) with relatively high bending stiffness.It is possible thereby to form the heat that may be significantly smaller
Deformation, for the friction of the very little between piston and cylinder --- and therefore also for smaller oil consumption and smaller combustion
Material consumption --- there is great significance.Very effective reciprocating internal combustion can be manufactured using cylinder crankcase according to the present invention
Machine.The internal combustion engine with this cylinder crankcase is just also quoted in this respect.
For the sake of completeness, it is noted that the present invention does not extend only into the gas with the first cylinder and the second cylinder
Cylinder crankshaft case, and also relate particularly to that there is (optional) third cylinder, (optional) the 4th cylinder, (optional) the 5th gas
The cylinder crankcase of cylinder, (optional) the 6th cylinder or (optional) other cylinders, namely be related to tool there are three, four, five,
The cylinder crankcase of six, eight or more cylinders.Correspondingly, it is logical that the first more than one cooling can also be correspondingly set
A cooling duct or at least one cooling duct is arranged especially for each cylinder in road and second cooling duct.
It is also to be noted that the quantity that the present invention also extends into wherein cooling duct is bent less than the cylinder of the quantity of cylinder
Axle box.For example, can only for especially influenced by temperature in intermediate bulkhead certain cylinders (for example, be used for total of four gas
Two cooling ducts of two cylinders in cylinder) cooling duct is provided.Alternatively, individually cooling duct can be formed in cylinder block
In, so as to cooling duct for example in different zones (vertical direction along cylinder is seen) independently around two or more cylinders,
So that cooling duct surrounds two cylinders (or more cylinder) completely.This can especially be achieved, i.e., such cooling
Channel surrounds two cylinders in this way so that is formed in a manner of being observed (i.e. on the axial direction of cylinder) by vertical direction
The trend of (single or multiple) 8-shaped, wherein each partial circle of " 8 " is respectively screw shape composition.
In the cylinder crankcase so far with three or more cylinders --- no matter the quantity of cylinder is such as
What --- the third cooling duct with helical segments, the 4th cooling duct with helical segments can also be constructed, with spiral shell
Revolve the 5th cooling duct of section, the 6th cooling duct with helical segments and/or it is optional with helical segments in addition
Cooling duct.
By suitably arranging and designing corresponding spiral shape cooling duct, all intermediate bulkheads of cylinder crankcase can be with needle
It to property is especially cooled down, to be that each cylinder forms heat distribution as uniform as possible in the whole circumference of cylinder.Therefore,
Can to avoid or at least minimize non-uniform thermal deformation.Therefore above-mentioned caused disadvantage is avoid or reduced.
It is above-mentioned and disclosed below two cylinders are shown for the cylinder crankcase with three or more cylinders
The feature of plasticity description can --- with described combination or also can individually, namely independently of described in embodiment
Combination --- it realizes or can also be realized on all intermediate bulkheads or cylinder only on several intermediate bulkheads or cylinder.
In a practical embodiments of cylinder crankcase according to the present invention, the first cooling duct and (at least) second are cold
But channel is vertically observed and is at least partially overlappingly arranged in the region of intermediate bulkhead.This means that logical in the first cooling
Overlapping region is generated in the virtual projection of road and the second cooling duct in vertical direction.When the first cooling duct has away from first
When the smaller radial distance of cylinder and the second cooling duct are had with the second cylinder at a distance of smaller radial distance, what this had
The advantage is that the cooling effect of the first cooling duct also can be played additionally towards the second cylinder well, and second is cold
But the cooling effect in channel can also be played additionally towards the first cylinder well.
In this background, such possibility can also be referred explicitly to, i.e., the first cooling in the region of intermediate bulkhead
Channel and the second cooling duct are largely overlappingly arranged, that is, observation is at least 50% in the height direction, preferably extremely
Few 70% or at least 80% overlapping.Also it is manifestly intended that in the region for the intermediate bulkhead observed in vertical direction first
Cooling duct and the second cooling duct can also be arranged to completely overlapped up and down.In this case, the first cooling duct and
Second cooling duct (the first cylinder of distance is identical with the distance of the second cylinder of distance herein) in the region of intermediate bulkhead
Similar or identical cooling effect is played towards the first cylinder and the second cylinder.
In another practical embodiments of cylinder crankcase according to the present invention, the first cooling duct and the second cooling duct
The geometry having the same at least in corresponding helical segments.This has the advantage of manufacturing root by forming method
When according in the cylinder crankcase of the present invention with multiple cylinders of the present invention, the quantity regardless of cylinder, for each cooling
Channel can use identical core.It is also had the advantage that using the possibility of phase same core, i.e., it in this case can be with
The basic mistake arrangement for excluding core is obscured.The case where this by other measure especially suitable for preventing the mistake of core from arranging,
Such as because it is used for the entrance section of the first cooling duct and at least the second cooling duct (and other possible cooling ducts)
All it is arranged in the same side of cylinder crankcase.
Anyway, identical geometry is used for multiple or whole cooling ducts of internal combustion engine according to the invention
Have the advantages that in design, that is, realizes simple scalability, that is, for extending or reducing with one or more cylinders
The design consuming of cylinder crankcase is relatively small.
When the first cooling duct of the vertical direction observation along intermediate bulkhead and the second cooling duct are with reciprocal side
To the further advantage for when being stacked arrangement, obtaining the cooling effect according to the present invention for cylinder crankcase.This
In the case of, especially when all cooling ducts in the same direction, when preferably flowing from top to bottom, be discharged via cooling duct
Heat pass through common intermediate bulkhead along different directions respectively and guide.
Cylinder crankcase according to the present invention as characterized above can be manufactured by any suitable material, especially grey
Cast iron materials or light metal casting materials.When cylinder block is made of light metal and in the first cylinder and at least the second cylinder
When arranging each cylinder operation set or cylinder firing floor on side, particular advantage can be realized.Gas in scope
Cylinder operation set is especially appreciated that as such sleeve, the sleeve has about 2 to 3mm wall thickness, and logical when manufacture cylinder block
Sleeve is crossed to mould and determine in cylinder block.It is also possible that can also by this cylinder run set indentation cylinder block in or
It is connected in any other manner with method and cylinder operation set.Cylinder firing floor in scope of the invention is especially appreciated that as thickness
Degree less than 1mm, especially with 0.1mm to thickness, thickness preferably with about 0.1mm to 0.5mm operation between 1mm
Layer.This cylinder firing floor can be applied for example by plasma-coated in the cylinder of cylinder crankcase according to the present invention
Add.Cylinder crankcase and the combination of the cylinder operation set or the cylinder firing floor applied in cylinder that are inserted into cylinder have in this way
The advantages of, i.e., cylinder crankcase generally has low-down component weight, because they have good thermal conductivity can be
Reach its running temperature after short time, and realizes in the region of intermediate bulkhead very effective and especially highly uniform
Cylinder cooling in the region of circumferential wall.Therefore, in the operation of the internal combustion engine with cylinder crankcase according to the present invention
Uniform Temperature Distribution is realized in the whole circumference of the cylinder of cylinder crankcase, and the opposite of face is run so as to cause each cylinder
Lower thermal deformation.Therefore, the oil consumption of the internal combustion engine with crankcase according to the present invention can keep relatively low, because of piston ring
Good sealing effect is formed due to the only thermal deformation of very little.
For the same reason, the prestressing force of piston ring can be kept as very little, and the sealing between piston and cylinder is borrowed
Piston ring is helped to carry out.The friction of very little can be correspondingly formed, and therefore interior with cylinder crankcase according to the present invention
The fuel consumption of combustion engine is very low.Since effectively sealing is formed based on lower thermal deformation and between piston and cylinder on the whole,
So the oil consumption of the internal combustion engine with cylinder crankcase according to the present invention is less than cylinder crankcase well known in the prior art
The oil consumption of internal combustion engine.
From the point of view of configuration aspects --- especially for reduction for cooling down needed for cylinder crankcase according to the present invention
Whole components --- preferably, the lower end of the lower end of the first cooling duct and the second cooling duct passes through horizontal-extending cooling
Agent feedway is connected with each other.In this case, two cooling ducts or more cooling duct can be supplied by central coolant
To road while supply coolant.
In another practical embodiments of cylinder crankcase according to the present invention, lead to the first cooling duct first enters
The cross section of mouth has the shape and/or size different from the cross section for the second entrance for leading to the second cooling.It is such to set
Meter --- entrance with different shape and/or size --- can especially be used for, individual cooling duct is although pass through
Common coolant supply road supply (although entrance is different at a distance from the input channel for entering coolant feedway) also can quilt
Roughly the same amount of coolant flows through.So in the case the pressure of the coolant inside coolant feedway with become a mandarin
Mouthful spacing increase and reduce.The effect can especially be considered in this way, especially by be passed through coolant feedway
Construct smaller and/or different molding fluid cross-sections in the small-pitch entrance area of input channel, and be passed through
Larger through flow cross section, the shape and size are constructed in the larger entrance area of the input channel spacing of coolant feedway
It is especially adapted in this way so that form roughly the same fluid stream with the cooling duct that coolant feedway fluidly connects by all
Amount.
Alternately, the variation that the shape and/or size of entrance can also be used, so as in the region with inlet opening
Any pressure difference independently, in all relevant cylinders realizes heat distribution as uniform as possible, and has to thermal deformation
Targetedly influence.
In another practical embodiments of cylinder crankcase according to the present invention, intermediate bulkhead is in minimum thickness region
Thickness is up to 15mm.In the case where multiple intermediate bulkheads are arranged, the thickness preferably at most 15mm of all intermediate bulkheads.
" minimum thickness " refers to the region of the minimum material thickness between two cylinders, which is used in cylinder block made in one piece
Constitute cooling duct.In general, when cylinder is arranged parallel to each other, intermediate bulkhead of this minimum thickness between two cylinders
Extend in entire height.In the sense that this statement, any cylinder operation set or cylinder firing floor are not covered by intermediate bulkhead
Thickness.Intermediate bulkhead with such thickness (being up to 15mm between two cylinders at least partly) is that weight minimizes
And therefore need efficiently to cool down very much, with when necessary, especially in the region of intermediate bulkhead with the surrounding wall of cylinder its
His region is compared to will not be considerably more rapid (than other regions of the surrounding wall of the cylinder) and more strongly heat up.Because in such case
Under, it is possible to create non-uniform thermal deformation as described above, leading to the disadvantage that is, the internal combustion engine with this cylinder crankcase
Will a large amount of oil of consumption and fuel because sufficiently sealed between piston and cylinder is only capable of passing through at least in some operation phase
It is realized using the piston ring with very high pretightening force.The advantages of cylinder crankcase according to the present invention, is that they allow
The only manufacture of the cylinder block with very small wall thickness in the region of intermediate bulkhead, and realize very little --- or if
If inevitable --- at least circumferentially realize the thermal deformation of relative equilibrium.
About the thermal discharge efficiency in intermediate bulkhead region, it has proved that advantageously, the cross section of the first cooling duct
And/or second the cross section of cooling duct have in respective helical segments and keep identical geometry and size.Alternatively
Or additionally, the cross section of the cross section of the first cooling duct and/or the second cooling duct can have and prolong in vertical direction
The maximum height stretched, the maximum height are at least twice of maximum width.In terms of fluid technique, opening has continuous seamed edge
Shape especially has the radius at least partially constituted.The opening in long hole shape can be especially quoted in this respect.These shapes,
And especially long hole shape has the advantage that, that is, flows through the coolant of cooling duct in helical segment due to effect
Centrifugal force on the cooling duct and bigger, be directed toward in the surface segment of cylinder and be distributed.It is achieved in particularly effective
Heat dissipation.
As already mentioned, the invention further relates to the internal combustion engines with any cylinder crankcase as described above.This
Invention more particularly to a kind of internal combustion engine with cylinder crankcase, the cylinder crankcase is with electronic or other and engine
The decoupled coolant pump of rotating speed can independently of engine speed control by the cooling pump and flow through the cold of cooling duct
But agent stream.This has the advantage that that is, coolant flow can be independently of engine speed and therefore working as independently of internal combustion engine
Preceding operating status and controlled.In this case, it is particularly possible to control electronic coolant pump in this way so that the temperature of coolant
It keeps approximately constant, mode to be after reaching nominal operating temperature, is adjusted according to the condition that heat is discharged from cylinder logical
The fluid velocity in supercooling channel.
Description of the drawings
Other actual embodiments of the present invention are described below in conjunction with the accompanying drawings.In the accompanying drawings:
Fig. 1 illustrates in perspective view the center vertical section for having the cylinder crankcase according to the invention there are four cylinder,
Fig. 2 shows the side view according to the central lateral plane of the cylinder crankcase of the present invention of Fig. 1,
Fig. 3 only shows the cooling duct of cylinder crankcase according to the present invention with solid, and cylinder crankcase, which has, to be shown
Cylinder head, coolant storage and the coolant feedway of internal combustion engine shown in meaning property,
Fig. 4 illustrates only the cooling duct of the rightmost side in Fig. 3 according to the arrow IV in Fig. 3,
Fig. 5 has only been shown as example the stereogram for the cooling duct that the regions Fig. 3 for being are marked in Fig. 3,
Fig. 6 shows the amplification of cross section of the cooling duct of Fig. 1 and cylinder crankcase shown in Fig. 2 in bolt section
Figure,
Fig. 7 only shows the cooling duct with coolant container, coolant feedway and top side collection road with stereogram.
Specific implementation mode
Figures 1 and 2 show that according to the present invention have the first cylinder 12a, the second cylinder 12b, third cylinder 12c and
The cylinder crankcase 10 of four cylinder 12d.As shown in Figure 1, cylinder crankcase 10 together with all cylinder 12a, 12b, 12c, 12d by whole
The cylinder block 14 of body manufacture is constituted, and wherein cylinder 12a, 12b, 12c, 12d is surrounded by cylinder block 14.In the first cylinder 12a and
Between two cylinder 12b, between the second cylinder 12b and third cylinder 12c and between third cylinder 12c and the 4th cylinder 12d
Intermediate bulkhead 16 is formed, the intermediate bulkhead is by adjacent cylinder body 12a, 12b;12b,12c;12c, 12d are separated from each other respectively.
It is combined with Fig. 2 and Fig. 3 and Fig. 7 as can be seen that being constituted in cylinder block 14 has spiral shell especially by by Fig. 1
Revolve the first cooling duct 18a of section 20a, the second cooling duct 18b with helical segments 20b, with helical segments 20c's
Third cooling duct 18c and the 4th cooling duct 18d with helical segments 20d.
From Fig. 1 to Fig. 3 and in the comparison of Fig. 7 it can also be seen that cooling duct 18a, 18b, 18c, 18d are respectively in circumference side
It is multiple entirely around cylinder 12a, 12b, 12c, 12d upwards.In an illustrated embodiment, helical segments 20a, 20b, 20c, 20d
Extend (see Fig. 2) on the entire height h of each leisure cylinder 12a, 12b, 12c, 12d, wherein each cooling duct 18a, 18b,
18c, 18d on height h along the circumferential direction at least four times entirely around cylinder 12a, 12b, the 12c for being associated with the cooling duct,
12d。
Cooling duct 18a, 18b, 18c, 18d are all configured with identical geometry in an illustrated embodiment.For
For production, especially in the forming process using core, identical core can be used in this respect.Especially sand core, salt core
Or other cores, especially so-called loss core, the loss core can be after manufacturing cylinder crankcase by moulding process
And/or period is removed with simple and cost-effective ways and means from cylinder block 14.The production can also be 3D printing.
Especially in fig 1 and 2 it will be clear that cooling duct 18a, 18b;18b, 18c;18c, 18d are in centre
In the region of partition board 16, on the vertical direction of cylinder very close to and alternately inverted ground above and below stacked arrange.Due to cold
But channel 18a, 18b, 18c, 18d geometry having the same, therefore they are reversed respectively in the region of intermediate bulkhead 16
Ground is stacked on top of each other.It means that when flowing through all channels in intermediate bulkhead from bottom to top, in vertical direction alternately
Cooling duct 18a, 18b;18b,18c;18c, 18d are flowed through with opposite circumferencial direction, and the therefore heat on vertical direction
Amount is respectively on different circumferencial directions " discharge ".This is conducive to realize uniform temperature on the circumference of each cylinder 12a-12d
Degree distribution.
In this embodiment, cooling duct 18a, 18b, 18c, 18d are regularly constructed and are arranged so that in short transverse
On in adjacent cooling duct 18a, 18b;18b, 18c;Approximately the same distance is generated between 18c, 18d respectively.Due to a variety of originals
Cause, this leads to the particularly effective cooling in the region of intermediate bulkhead 16.On the one hand, heat from intermediate bulkhead 16 via respectively phase
The adjacent cooling duct 18a, 18b for being stacked arrangement up and down;18b, 18c;18c, 18d are along different circumferential directions from 16 row of intermediate bulkhead
Go out.On the other hand, it is compared with the neighboring area in the circumferential wall of other encirclement cylinders 12a, 12b, 12c, 12d, in intermediate bulkhead
Cooling duct 18a, 18b, 18c, the more high density of 18d are formd in 16 regions.Especially in fig 1 and 2 as can be seen that in
Two adjacent cooling duct 18a, 18b in the region of spacing board 16;18b, 18c;The distance between 18c, 18d a;18b, 18c;
18c, 18d are less than corresponding cooling duct 18a, 18b, 18c, the height h of 18ck。
Fig. 2 also clearly demonstrates cooling duct 18a, 18b;18b, 18c;18c, 18d in vertical direction alternately on
It is lower stacked and completely overlapped in the height direction.
In the shown embodiment, the width b of cooling duct 18a, 18b, 18c, 18dKIn helical segments 20a, 20b, 20c,
It is about 4mm in 20d.Cooling duct 18a, 18b, the height h of 18c, 18dkIn helical segments 20a, 20b, 20c, 20d about
For 11mm.
In the shown embodiment, the width b of intermediate bulkhead 16ZFor 15mm.Correspondingly due to cooling duct 18a, 18b,
18c, 18d are centrally constituted in intermediate bulkhead 16 respectively, therefore in the region of intermediate bulkhead 16, cooling duct 18a, 18b,
The left and right side of 18c, 18d retain the material thickness of about 5.5mm respectively.For integrality it should be pointed out that Fig. 1 and 2 institutes
The cylinder block shown is made of light metal (being aluminium here).
In manufacturing step later, lays thin cylinder firing floor respectively in cylinder 12a, 12b, 12c, 12d and (do not show
Go out).Particularly, cylinder firing floor has the at most thickness of 1mm, it is therefore preferred to have is less than the thickness of 0.5mm, particularly preferably has
The thickness of 0.1mm to 0.5mm.This cylinder firing floor can especially be laid by plasma process.
Alternatively, cylinder operation set (being also not shown) can also be set in cylinder block 14, cast especially by being inserted into
It is connected with cylinder crankcase 10 in mould and by the outer enclosure of cylinder operation set.
How coolant, particularly water are conveyed by unshowned pump referring now to Fig. 3 and Fig. 7 explanations or oil passes through cooling
Channel 18a, 18b, 18c, 18d, for heat to be discharged from cylinder block 14.In an illustrated embodiment, (optional provided with one
) coolant storage 22, in the horizontal direction in all cylinder 12a, the 12b for being supplied with coolant from the reservoir,
Extend on the region of 12c, 12d.By inflow section 24 towards coolant reservoir 22 (with reference to Fig. 3), fluid is from coolant
Circulation loop flows into coolant reservoir 22.In an illustrated embodiment, service duct 26 is branched out from coolant storage 22,
Coolant can be reached down to along gravity direction g for cooling duct 18a, 18b, 18c by the service duct, and 18d's is cold
But agent feedway 28.Coolant feedway 28 is in the shown embodiment according to arrow since the interface position 30 of feed path 26
40 is through-flow.Correspondingly, the 4th cooling duct 18d is from the interface position 30s of feed path 26 to coolant feedway 28
Distance is most short.Distance from interface position 30 to the distance of third cooling duct 18c, to the second cooling duct 18b and to first
The distance of cooling duct 18a is all higher than the distance of the 4th cooling duct 18d branched out close to interface position 30.Therefore, with
The distance of interface position 30 is bigger, and coolant is leading to cooling duct 18a, and the pressure in the entrance area of 18b, 18c is smaller.
In order to realize through cooling duct 18a, 18b, 18c, 18d etc. big flow, to the second cooling duct 18b, arrive
The inlet opening (not shown) of third cooling duct 18c and the 4th cooling duct 18d distinguish such shrinking so that via cooling logical
Road 18a, 18b, 18c, the coolant fluids of 18d partial throttlings cause coolant by each cooling duct 18a, 18b, 18c,
The flow of 18d is roughly equal.The roughly equal volume flow deviation that refers in particular to is up to 10%, is preferably up to 5%, more preferably
Up to 3%.
Coolant starts to flow according to arrow 44a, 44b, 44c, 44d since coolant feedway 28 (referring to Fig. 3 and Fig. 7)
Enter cooling duct 18a, 18b, 18c, helical segments 20a, 20b, 20c, the 20d of 18d should upwards until the collection road 32 on top
The collection road on top is high-visible in the figure 7.Each cooling duct 18a, 18b, 18c, 18d are connected to the collection road 32 on top.It receives
Collect road 32 on the outside circumferentially entirely around by the first cylinder 12a, the second cylinder 12b, third cylinder 12c and the 4th cylinder 12d
The unit (piston-cylinder unit) of composition.In addition, in each two adjacent cylinder 12a, 12b;12b, 12c;It is arranged between 12c, 12d and connects
Road 34 is connected, interface channel 34 is established between the left side and right side in the collection road 32 on top and fluidly connected.Collect road 32
It is flowed through herein by coolant basically according to arrow 42 with interface channel 34.Therefore the upper zone of cylinder 12a, 12b, 12c, 12d
Domain is extraly further cooled down.
Unshowned outlet 36 in the figure 7 is constituted in the collection road 32 on top, fluid can pass through the outlet, edge
The direction for arrow 38 flows to the cooler (not shown) of cooling circuit (not shown).In cooling circuit, the temperature of coolant
It can be lowered as needed, so that coolant cooling again is then supplied to coolant reservoir 22 again.
Fig. 6 shows the cutting cooling duct 18a, 18b, 18c, 18d in helical segments 20a, 20b, 20c, the region of 20d
Cross section.Cooling duct 18a, 18b, 18c are can be seen that, 18d has height hKWith width bK, wherein geometry is in this key
Construct to keyhole shape.Therefore, top profile and bottom profile are semicircular and have bK/ 2 radius.
The feature of the invention disclosed in current specification, drawings and the claims both can individually and also can
With combined type realize various embodiments of the present invention.In view of the knowledge of those skilled in the art, the present invention can be in right
Change in the range of it is required that.
List of numerals
10 cylinder crankcases
12a-d cylinders
14 cylinder block
16 intermediate bulkheads
The cooling ducts 18a-d
20a-d helical segments
22 coolant reservoirs
24 inflow regions
26 service ducts
28 coolant feedways
30 interface positions
32 collect road
34 interface channels
36 outlets
38 arrows (from the direction for collecting road outflow)
40 arrows (flow direction in coolant feedway)
42 arrows (collect the flow direction in road and interface channel)
44a-d arrows (flow direction in helical segments)
hKThe height of cooling duct
bKThe width of cooling duct
bZThe width of intermediate bulkhead
Claims (10)
1. a kind of cylinder crankcase comprising the first cylinder (12a) and at least one second cylinder (12b), first cylinder
The cylinder block (14) manufactured by integral type at least one second cylinder surround and by common intermediate bulkhead (16) each other
Separate, which is characterized in that be configured in the cylinder block (14) of integral type manufacture it is at least one have along the circumferential direction enclose completely
Around the first cooling duct (18a) of the helical segments (20a) of the first cylinder (12a), and in the cylinder block of integral type manufacture
(14) it is configured in along the circumferential direction entirely around the second cooling duct of the helical segments (20b) of the second cylinder (12b)
(18b)。
2. cylinder crankcase described in accordance with the claim 1, which is characterized in that the first cooling duct (18a) and the second cooling are logical
Road (18b) is vertically observed in the region of intermediate bulkhead (16) at least partially overlappingly to be arranged.
3. according to the cylinder crankcase described in one of preceding claims, which is characterized in that the first cooling duct (18a) and second
Cooling duct (18b) geometry having the same at least in respective helical segments (20a, 20b).
4. according to the cylinder crankcase described in one of preceding claims, which is characterized in that the first cooling duct (18a) and second
Cooling duct (18b) is mutually oppositely stacked up and down along the short transverse observation of intermediate bulkhead (16).
5. according to the cylinder crankcase described in one of preceding claims, which is characterized in that cylinder block (14) is made of light metal
And cylinder operation set or laying cylinder fortune are respectively arranged on the inside of the first cylinder (12a) and at least the second cylinder (12b)
Row layer.
6. according to the cylinder crankcase described in one of preceding claims, which is characterized in that the lower end of the first cooling duct (18a)
It is connected with each other by horizontally extending coolant feedway (28) with the lower end of the second cooling duct (18b).
7. according to the cylinder crankcase described in one of preceding claims, which is characterized in that import the first cooling duct (18a)
The cross section of first entrance has the shape and/or size different from the cross section of second entrance of the second cooling duct is imported.
8. according to the cylinder crankcase described in one of preceding claims, which is characterized in that the thickness of intermediate bulkhead (16) is most
It is up to 15mm in the region of small thickness.
9. according to the cylinder crankcase described in one of preceding claims, which is characterized in that the first cooling duct (18a's) is transversal
Face and/or the cross section of the second cooling duct (18b) have in respective helical segments (20a, 20b) keeps identical geometric form
Shape and size and/or with the maximum height extended in vertical direction, which is at least twice of maximum width.
10. a kind of internal combustion engine has according to the cylinder crankcase described in one of preceding claims, which is characterized in that be equipped with
Electronic or other coolant pumps decoupled with engine speed, can be independently of engine speed by the cooling pump
Ground controls the coolant flow for flowing through cooling duct (18a, 18b, 18c, 18d).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017205384.4A DE102017205384A1 (en) | 2017-03-30 | 2017-03-30 | Cylinder crankcase and internal combustion engine with such a cylinder crankcase |
| DE102017205384.4 | 2017-03-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108691684A true CN108691684A (en) | 2018-10-23 |
Family
ID=63525498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810272498.5A Pending CN108691684A (en) | 2017-03-30 | 2018-03-29 | Cylinder crankcase and internal combustion engine with this cylinder crankcase |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108691684A (en) |
| DE (1) | DE102017205384A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019110566A1 (en) * | 2019-04-24 | 2020-10-29 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Crankcase and process for its manufacture |
| AT524215B1 (en) | 2020-12-18 | 2022-04-15 | Avl List Gmbh | Internal combustion engine with cylinder liner with integrated cooling channel |
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- 2017-03-30 DE DE102017205384.4A patent/DE102017205384A1/en not_active Ceased
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| EP0182324A2 (en) * | 1984-11-23 | 1986-05-28 | Klöckner-Humboldt-Deutz Aktiengesellschaft | Coolant guiding for a liquid-cooled cylinder liner |
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Also Published As
| Publication number | Publication date |
|---|---|
| DE102017205384A1 (en) | 2018-10-04 |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181023 |
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