WO2023067131A1 - Moteur à combustion interne comprenant un bloc-cylindres - Google Patents

Moteur à combustion interne comprenant un bloc-cylindres Download PDF

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Publication number
WO2023067131A1
WO2023067131A1 PCT/EP2022/079358 EP2022079358W WO2023067131A1 WO 2023067131 A1 WO2023067131 A1 WO 2023067131A1 EP 2022079358 W EP2022079358 W EP 2022079358W WO 2023067131 A1 WO2023067131 A1 WO 2023067131A1
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WO
WIPO (PCT)
Prior art keywords
jacket
cylinder
internal combustion
combustion engine
coolant
Prior art date
Application number
PCT/EP2022/079358
Other languages
German (de)
English (en)
Inventor
Robert Berger
Roland Santner
Original Assignee
Avl List Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Avl List Gmbh filed Critical Avl List Gmbh
Publication of WO2023067131A1 publication Critical patent/WO2023067131A1/fr

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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
    • 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
    • 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

Definitions

  • the invention relates to an internal combustion engine with a cylinder block with a coolant jacket, the coolant jacket at least partially surrounding a cylinder arrangement arranged between a cylinder head sealing plane and a crank chamber with at least two cylinders arranged next to one another and being divided by a partition into a first jacket section remote from the crank chamber and a second jacket section near the crank chamber.
  • the separation is formed by a separating wall of an insert element, which extends at least partially along a circumference of at least one cylinder and is inserted into the coolant jacket, wherein the insert element is located between an end of the insert element on the cylinder head side, which is arranged in the region of a cover plate of the cylinder block bordering on the cylinder head sealing plane, and the Partition wall has at least one retaining wall extending substantially parallel to the cylinders.
  • DE 33 109 57 A1 discloses a cylinder block with a water jacket, with a partition wall dividing the water jacket into an upper bore section and a lower bore section.
  • the bulkhead rises continuously (ie slopes relative to a cylinder head gasket plane) and has openings through which the upper bore section is coupled to the lower bore section.
  • the production of such a shaped partition in the water jacket is complicated and expensive.
  • the connection between the upper and lower bore section causes uncontrolled flow transfers and prevents optimal cooling of the internal combustion engine, which is tailored to the spatial requirements.
  • AT 15665 Ul discloses a cooling structure for an internal combustion engine with a coolant jacket around a cylinder arrangement, the coolant jacket being divided into an upper jacket section and a lower jacket section by a partition.
  • the partition is formed by a flat insert element which is inserted into the cooling liquid jacket and rests on a circumferential shoulder between the lower and the upper jacket section.
  • a similar separation between a lower and an upper shell portion of a cooling liquid shell is known from the publication JP H 11294254A.
  • AT 521945 B1 describes an internal combustion engine with a coolant jacket in the cylinder housing, which is divided into a first and a second jacket section by a groove-like insert element.
  • the water jacket spacer has a spacer body and a bag-shaped corrector provided on a surface of the spacer body.
  • the correction device is lower than a cooling water inlet connection.
  • DE 10 2018 118 804 A1 shows an internal combustion engine with an insert for a water jacket of the cylinder block, which has a stepped section which separates an upper flow path from a lower flow path.
  • EP 3 822 473 A1 discloses a cylinder block with an insert element for the water jacket. Projecting flanges are arranged at the upper and at the lower end of the insert element, which flanges contribute to the positioning of the insert element within the water jacket. When installed, the flanges are located inside the water jacket and do not serve as supports, but as lateral spacer elements.
  • WO 2008/010584 A1 US Pat. No. 7,032,547 A and EP 3 239 507 A1 each show a partition between a lower and an upper jacket section, which is supported by spacers on the bottom of the coolant jacket.
  • the object of the invention is therefore to provide an internal combustion engine with a coolant jacket that is easy to manufacture and with which leakage flows can be avoided.
  • the insert element has in the region of the cover plate at least one, preferably at least two, support slugs formed onto the retaining wall, which rests in a receiving pocket of the cylinder housing which is shaped reciprocally to the support slug. lay up.
  • the cover plate is the upper side of the cylinder block that adjoins the cylinder head and is formed in the area of the top land.
  • the cover plate can be designed as a so-called "open deck” construction or as a so-called “closed deck” construction.
  • the water jacket surrounding the cylinders is closed at the top, so when you look up at the engine block, you can only see the cylinder bores and the engine oil and cooling water channel bores.
  • an "open-deck” block these are Cylinder is free-standing and the water jacket is open at the top, it is then closed by the cylinder head using a special head gasket during assembly.
  • Protruding material formations on the retaining wall are referred to as support slugs.
  • the support slugs can be cast with the insert element, for example, or connected to the retaining wall by gluing, welding or the like.
  • the support slugs are accommodated in the corresponding receiving pockets with a defined, only slight play.
  • the receiving pockets are formed essentially reciprocally to the support slugs, the size of the receiving pockets corresponds to the size of the support slugs plus a defined play.
  • At least one support slug is preferably designed to protrude radially outwards from the retaining wall.
  • the support slugs and the corresponding receiving pockets form a form-fitting connection and enable the insertion element to be positioned in the coolant jacket in a precise and immovable manner.
  • the receiving pockets are molded into the cover plate of the cylinder block.
  • the partition divides the coolant jacket into an "upper" first jacket section and a “lower” second jacket section.
  • first shell section is farther away from the crankcase or close to the cover plate.
  • second shell section is arranged close to the crankcase or farther away from the cover plate.
  • the first shell section serves to cool the hot upper cylinder area, which is adjacent to the top plate, and the second shell section to cool the cooler lower cylinder area, which borders the crankcase.
  • cooling liquid jacket is to be understood as that volume in which the cooling liquid (in particular water, optionally with suitable additives) is located or in which it circulates during operation.
  • the cooling liquid jacket is formed in a casting or block as a cavity surrounding the cylinder assembly.
  • the insert element is preferably made in one piece and—preferably with the exception of the passage of coolant—has a closed (ring-like or “multi-ring”-like) contour. The contour advantageously follows the course of the cylinder walls.
  • the coolant jacket formed, for example, in the cylinder block is thus divided into a lower and an upper region by the insert element.
  • the coolant jacket can thus be designed in a one-piece cast core (cylinder block) as an "open deck" configuration.
  • the insert element takes on the function of a partition wall or a screen. The separation allows two coolant spaces - the first jacket section and the second jacket section - to be preferred With the insert element according to the invention, separate cooling strategies for the first and the second jacket section can thus be implemented very easily become. For example, while cooling takes place in the first jacket section and thus close to the cylinder head during the warming-up process, flow through the second jacket section can still be suppressed in order to heat up the cylinder block more quickly and thus reduce friction.
  • the two jacket sections are actually charged by different temperature circuits.
  • the lower, second jacket section and at least part of the upper, first jacket section are formed in a preferably one-piece cast part. This highlights the advantage of the insert particularly well.
  • the lower shell section and at least part of the upper shell section are formed in a cylinder block.
  • the dividing wall is designed in the manner of a channel, with the dividing wall preferably being curved concavely towards the side of the first casing section and convex towards the side of the second casing section.
  • the dividing wall has a cross section that is open at the top—that is, toward the first casing section—and closed at the bottom—that is, toward the second casing section.
  • the partition can in particular have a U-shaped or V-shaped cross section.
  • the open ends of the U-shaped or V-shaped cross-section bring about a clamping effect against opposite walls of the coolant jacket.
  • a U-shaped or V-shaped cross section allows the insert element to be jammed, so that a stable position of the partition wall in the cooling liquid jacket is ensured.
  • the insert element can easily be inserted into the coolant jacket from the side of the open cover plate or from the side of the cylinder head sealing plane.
  • At least one sealing edge of the partition runs essentially in a plane normal to the cylinder axes.
  • the height of the respective jacket section remains constant along the entire circumference, which takes account of the temperature gradient running in the axial direction and uniform heat dissipation is achieved by the coolant flowing in particular in the first jacket section remote from the crankcase.
  • the coolant jacket preferably has at least one inflow area for a coolant inlet and at least one outflow area for a coolant outflow channel, with the first jacket section having the inflow area—preferably in the area of one of the cover plates—and the second jacket section having the outflow area—preferably in an area remote from the partition wall .
  • This allows the coolant to be directed to the area near the top land that is subject to higher thermal loads and then routed to the part near the crankcase, which does not need to be cooled as much.
  • At least one coolant inlet of the cylinder block opens into the first jacket section in at least one inflow area, with the retaining wall preferably being in the inflow area at least has a storage pocket.
  • the inflow area is advantageously arranged between a normal plane running through at least one support slug on a cylinder axis of a cylinder and the partition wall in the first jacket section. This enables a good, even distribution of the coolant in the first jacket section.
  • At least one coolant outlet of the cylinder block advantageously proceeds from the second jacket section in at least one outflow area of the insert element.
  • the first jacket section and the second jacket section are flow-connected to one another via at least one coolant passage formed, for example, by an overflow opening, it being possible for the overflow opening to be arranged in the partition wall.
  • the coolant thus flows from top to bottom through the cooling liquid jacket. It is fed to the first jacket section via the cooling liquid inlet in the inflow area, flows along the circumference of the cooling liquid jacket and reaches the second jacket section via the cooling liquid overflow. After flowing through the second jacket section along the circumference of the coolant jacket, the coolant leaves the second jacket section through the coolant outlet in the outflow area of the coolant jacket.
  • peripheral means the perimeter of the cooling fluid jacket that extends at least partially around the cylinder assembly.
  • At least one inflow area and at least one outflow area - seen in a plan view of the cylinder block - are spaced apart from one another, with preferably - in the case of several cylinders arranged in a row - at least one inflow area in the area of a first cylinder and at least one Outflow area is arranged in the area of another, preferably last, cylinder.
  • the at least one inflow area and/or at least one outflow area is arranged on a longitudinal side of the cylinder arrangement.
  • at least one inflow area and at least one outflow area are arranged on the same longitudinal side of the cylinder block.
  • a further variant of the invention provides that at least one throttle or blocking element is provided in the first shell section and/or in the second shell section along the circumference, the throttle or blocking element separating two areas of a shell section from one another.
  • the first throttling or blocking element is preferably arranged in the first casing section—seen in a top view of the cylinder block—between at least one inflow area and at least one outflow area.
  • the first throttle or blocking element is formed by a first integral part of the retaining wall of the insert element that protrudes radially inward, in particular in the form of a web educated. Radially inwards means that the projection is arranged oriented radially to the cylinder axis.
  • the second throttling or blocking element can also be arranged in the second casing section—seen in a plan view of the cylinder block—between at least one inflow area and at least one outflow area.
  • the second throttling or blocking element can be formed by a preferably web-like second molding of the partition wall of the insert element, which extends into the second casing section—preferably parallel to the cylinder axis.
  • the throttling or blocking elements only allow a defined small amount of coolant or no amount of coolant to pass at all and impede or prevent direct short-circuit flow between the inflow area and outflow area.
  • a defined cooling circuit can be created within a jacket section.
  • at least one throttle or blocking element (for example in the first or second jacket section) can be arranged between the inflow area and the outflow area for the coolant in order to cause a (single) flow around the cylinder arrangement before the coolant leaves the jacket section again.
  • At least one throttle or blocking element is arranged in the region of the coolant transfer, preferably directly adjacent to the coolant transfer.
  • the coolant transfer on a second side of the first throttling or blocking element facing the outflow area and/or on a second side facing away from the outflow area is a second throttling or Locking element is arranged.
  • a particularly good flow around all the cylinders in the first shell section can be achieved if the inflow area is arranged on a first side of the first throttle or blocking element that faces away from the coolant passage into the first shell section, with the inflow area advantageously being directly adjacent to the first throttle or blocking element the first side of the first throttle or blocking element is arranged.
  • the coolant transfer is favorably arranged on a second side of the first throttle or blocking element, facing away from the first side, preferably directly adjacent to the first throttle or blocking element.
  • a good flow around all cylinders in the second casing section can be achieved if the outflow area on a first side of the second throttle or blocking element facing away from the coolant transfer into the first casing central section is arranged, wherein advantageously the outflow area is arranged directly adjacent to the second throttle or blocking element on the first side of the second throttle or blocking element.
  • the coolant transfer is advantageously arranged on a second side of the second throttle or blocking element, facing away from the first side, preferably directly adjacent to the second throttle or blocking element.
  • first and/or second throttle or blocking element is/are formed in one piece with the insert element.
  • first and/or second throttle or blocking element is formed by the partition wall or by the retaining wall of the insert element and is designed essentially parallel to the cylinder axis.
  • the first throttle or blocking element can extend over the entire height of the first casing section, and the second throttle or blocking element can extend over the entire height of the second casing section.
  • the insert element is preferably made of a material with at least one of the following properties: non-metallic material; Material with an insulating effect that thermally insulates the first jacket section from the second jacket section; elastic material, in particular spring steel or plastic or a composite material.
  • the insert element can therefore also be made from a different material than the cast part forming the cylinder block.
  • the insertion element consists of an elastic material, for example spring steel or sheet metal.
  • a composite material that is to say made of steel and rubber or plastic and rubber, can also be used in a favorable manner, with the composite materials being able to be arranged in layers, for example.
  • the insert element is made of a material - for example non-metallic - with a lower thermal conductivity (or low coefficient of thermal conductivity) than the cylinder block, so that the insert element forms the first and second shell section not only seals against each other, but also thermally insulated from each other.
  • the insert element can be made of plastic or also of ceramic—for example, of an elastic ceramic based on a titanium carbide compound.
  • the insert element not only divides the first and the second jacket section spatially, but also completely hydraulically separates them from one another, the partition wall of the insert element sealingly bearing against the walls of the coolant jacket of the cylinder block.
  • the upper, first casing section is therefore completely sealed off from the lower, second casing section.
  • the first casing section and the second casing section can each have a separate inflow area and/or have drainage area. As a result, areas of the cylinder block or cylinder head can be cooled independently of one another and to different degrees.
  • first jacket section and the second jacket section can thus be fed separately with cooling water, which can come from a common pump or from separate pumps.
  • the coolant can, for example, be sent further into the cylinder head on the inlet side, can get back into the cylinder block from there on the outlet side and leave the coolant jacket via an outlet opening.
  • the lower, second shell section is charged separately: Here the coolant either flows in on one side and out on the opposite side, or the inlet and outlet openings are arranged next to each other, with a second throttle or blocking element being provided in between, so that the Cooling liquid once flows around the cylinder arrangement after being fed in and then runs off again.
  • Other inlet and outlet solutions are also possible without restricting the inventive function.
  • two divided temperature levels or a divided cooling circuit can be achieved in a simple and cost-effective manner—in a cylinder block cast in one piece, but divided by the diaphragm-shaped insert element.
  • the coolant jacket is designed in a configuration that is open on the cylinder head side.
  • the cylinder block and the cooling liquid jacket embodied therein are open on the side facing a cylinder head sealing plane and are therefore closed by a cylinder head gasket or the cylinder head when used as intended.
  • the upper first jacket section thus faces the cylinder head. Due to the open configuration, the insert can also be easily inserted. This can be done, for example, from above or from the side of the cylinder head before it is installed.
  • the upper first shell section can transition into a cooling volume formed in the cylinder head.
  • FIG. 3 shows the insert and a core representation of the block cooling jacket in a further exploded view from a second longitudinal side
  • FIG. 9 shows the cylinder block in a section according to the line IX-IX in FIG. 6,
  • Fig. 12 shows the engine block in an axonometric view with coolant flow in the second shell section in a section along line XII-XII in Fig. 9, Fig. 13 shows the engine block in an axonometric view in a section along line XIII-XIII in Fig. 9 ,
  • Fig. 15 shows the engine block in an axonometric representation in a section according to the line XV-XV in Fig. 9, and
  • Fig. 16 shows the engine block in a section according to the line XV-XV in Fig. 9.
  • Fig. 1 shows schematically an internal combustion engine 10 according to the invention with a cylinder head 11 and a cylinder block 12, designed here as a cylinder crankcase, with a cylinder arrangement 130 with a plurality of cylinders 13 arranged next to one another in a row for reciprocating pistons 14, which are connected via connecting rods 15 to an in a crank chamber 160 of the cylinder block 12 arranged crankshaft 16 act, whose axis of rotation is denoted by 16a.
  • the cylinder axes are denoted by 13a.
  • a coolant jacket 20 surrounding the cylinders 13 is arranged in the cylinder block 12 and at least partially surrounds the cylinders 13.
  • the coolant jacket 20 is configured in an open configuration (“open deck”) on the cylinder head side, i.e. towards a cylinder head sealing plane 17, and is cast together with the cylinder block 12, as can be seen from FIGS. 5 and 6.
  • the coolant jacket 20 is divided by a partition 3 into a first jacket section 21 remote from the crankcase and a second jacket section 22 close to the crankcase.
  • the partition 3 is formed by a channel-like partition wall 31 of an insert element 30, which extends at least partially along a circumference of the cylinder 13 and is inserted into the coolant jacket 20, see FIGS. 2 to 4, 9 and 10.
  • the coolant jacket 20 is shown as a core representation, ie through the sand core forming the coolant jacket 20, with the position of the cylinders 13 being indicated. It can be clearly seen that the coolant jacket 20 surrounds all of the cylinders 13 .
  • the liquid jacket 20 which is open in the direction of the cylinder head 11, extends in the direction of the cylinder axis 13a between the cover plate 122 of the cylinder block 12 or the cylinder head sealing plane 17 and a jacket bottom 25 on the crankcase side.
  • the jacket base 25 of the liquid jacket 20 - seen in a view from one longitudinal side of the cylinder block - is corrugated and has its minimum axial extent El (Fig. 2) in the area of the first engine transverse planes Ei (Fig 1) on.
  • the liquid jacket 20 has its maximum axial extent E2 (FIG. 2).
  • Partition 31 forms a separating region 310, which is configured essentially parallel to cylinder head sealing plane 17, between first jacket section 21 and second jacket section 22.
  • partition 31 is concave on the side of first jacket section 21 and convex on the side of second jacket section 22, for example curved.
  • the partition wall 31 has an essentially egg-shaped cross section.
  • the cross section can also be V-shaped, for example.
  • the insert element 30 has at least one retaining wall 32 extending essentially parallel to the cylinders 13 between the partition 31 and an end 301 on the cylinder head side in the region of the cover plate 122 of the cylinder block 12 .
  • the retaining wall 32 nestles against an outer inner wall 24 of the coolant jacket 20 and serves to position the partition wall 31 in the correct position.
  • the axial position of the partition wall 31 - ie the distance of the partition wall 31 from the cylinder head sealing plane 17 - is determined by the axial extent of the retaining wall 32.
  • the partition wall 31 is designed like a channel and is concavely curved towards the side of the first jacket section 21 (see FIGS. 9, 10, 15, 16).
  • the dividing wall 31 is essentially flat and, viewed in cross section, forms an L-shaped profile with the retaining wall 32, with the dividing wall 31 representing the shorter leg of the "L".
  • the dividing wall 31 can approximately normal to the retaining wall 32, or inclined at an angle not equal to 90° in relation to the retaining wall 32, in other words slightly upwards - i.e. towards the first casing section 21 - or downwards - i.e. towards the second casing section 22 - be angled .
  • the partition wall 31 forms an essentially L-shaped profile with the retaining wall 32, with the partition wall 31 representing the shorter leg of the “L”.
  • the partition wall 31 is preferably arranged running essentially normal to the retaining wall 32.
  • the partition 3 reduces the coolant volume and directs the coolant to the inner wall 24 of the coolant jacket 20 and thus to the cylinder 13 and the area of the cover plate 122 where the greatest thermal load occurs.
  • the insert element 30 is in this case in the upwards - so towards the cylinder head sealing plane 17 - open coolant jacket 20 inserted so that the concave side 311 faces the cylinder head 11 and the convex side 312 of the partition wall 31 faces the crankcase of the internal combustion engine 10 .
  • the distance between the sealing edge 313 and the retaining wall 32 - measured in a normal plane 13b running through the sealing edge 313 to the cylinder axis 13a - is favorably of the upwardly open cross section of the partition wall 31 of the insertion element 30 in the dismantled state, i.e. not yet inserted into the coolant jacket 20 State, slightly larger than the width of the cooling liquid jacket 20, measured between two facing inner walls 23, 24 of the cooling liquid jacket 20 in the normal plane 13b in the assembled state.
  • the sealing edge 313 of the partition 31 is pressed elastically against the inner inner wall 23 of the coolant jacket 20 adjacent to the cylinder 13, as a result of which the insert element 30 is elastically clamped and fixed between the inner walls 23, 24 of the coolant jacket 20 .
  • the retaining wall 32 rests against the outer inner wall 24 of the coolant jacket 20 that is further away from the cylinder (FIGS. 9, 10, 15, 16).
  • the sealing edge 313 pressed elastically against the inner inner wall 23 and the retaining wall 32 pressed against the outer inner wall 24 separate and seal the first jacket section 21 from the second jacket section 22.
  • the insert element 30 is preferably made of an elastic material, for example a non-metallic material or a material with low thermal conductivity, preferably plastic or ceramic.
  • the insert element 30 has a plurality of support slugs 33 which are integrally formed on the retaining wall 32 and project radially outwards in relation to the respective cylinder axis 13a.
  • the receiving pockets 123 formed in a cover plate 122 of the cylinder block 12 are formed essentially reciprocally to the support slug 33 so that a form-fitting connection against movements in a plane normal to the cylinder axes 13a parallel to the cylinder head sealing plane 17 is created.
  • the insert element 30 is positioned in the correct position in the cylinder block 12 in the assembled state and is secured against lateral displacement movements. Because the support slugs 33 engage in the receiving pockets 123, simple and reproducible assembly of the insert element 30 is ensured.
  • a coolant inlet 124 of the cylinder block 12 opens into the first jacket section 21 in an inflow area 211 .
  • the retaining wall 32 has a correspondingly shaped recess 321 .
  • a coolant outlet 125 of the cylinder block 12 extends from the second jacket section 22 in an outflow area 221 of the coolant jacket 20 .
  • the inflow area 211 and the outflow area 221 are on the same longitudinal side 19 of the cylinder block 12.
  • the inflow area 211 and the outflow area 221 are in the direction of the cylinder axes 13a and - in one Top view of the cylinder block 12 viewed - spaced from each other.
  • the inflow area 211 is arranged in the area of a first cylinder 13 and the outflow area 221 in the area of the last—in this case third—cylinder 13 .
  • a first throttle or blocking element 34 is arranged in the first casing section 21 between the inflow area 211 and the outflow area 221 .
  • the first throttle or blocking element 34 can be formed, for example, by a web-like first projection of the retaining wall 32 of the insert element 30 that projects radially inwards.
  • the coolant inlet 124 opens into the first jacket section 21 on a first side 341 of the first throttle or blocking element 34 facing away from the coolant transfer 36 .
  • the cooling liquid inlet 124 is arranged adjacent to the first throttle or blocking element 34 on the first side 341 of the first throttle or blocking element 34 .
  • a second throttle or blocking element 35 is arranged in the second casing section 22--seen in a plan view of the cylinder block 12--between the inflow area 211 and the outflow area 221, as can be seen from FIG.
  • the second throttle or blocking element 35 is formed, for example, by a second integral part of the partition wall 31 of the insert element 30 extending parallel to the cylinder axis 13a in the second jacket section 22 .
  • the coolant outlet 125 extends from the second jacket section 22 on a first side 351 of the second throttle or blocking element 35 facing away from the coolant transfer 36 .
  • the cooling liquid outlet 125 is arranged adjacent to the second throttle or blocking element 35 on the first side 351 of the second throttle or blocking element 35 .
  • the first jacket section 21 is flow-connected to the second jacket section 22 via at least one cooling liquid transfer 36 .
  • At least one cooling liquid transfer 36 can be formed, for example, by an overflow opening 361 in the partition 31 of the insert element 30 .
  • the partition wall 31 of the insert element 30 is not closed between the first 21 and second jacket section 22, but has at least one overflow opening 361 which—in the installed state—flow-connects the first jacket section 21 of the coolant jacket 20 to the second jacket section 22.
  • the coolant transfer 36 is arranged on a second side 342 of the first throttle or blocking element 34 facing away from the inflow area 211 and on a second side 352 of the second throttle or blocking element 35 facing away from the outflow area 221 .
  • the coolant flows according to the arrows S through the coolant inlet 124 into the upper first jacket section 21.
  • the first throttle or blocking element 34 prevents a short-circuit flow to the overflow opening 361.
  • the coolant therefore flows according to the Arrows S, flowing around all cylinders 13 of the cylinder arrangement 130 in the circumferential direction along the first jacket section 21 to the overflow opening 361 and further into the lower second jacket section 22 of the coolant jacket 20.
  • the coolant flow is divided, as indicated by the arrows S in Fig. 12 , with a part on the short path and another part on the long path in the second jacket section 22 flowing around the cylinders 13 of the cylinder arrangement 130 and leaving the second jacket section 22 through the cooling liquid outlet 125 .
  • the coolant enters the first jacket section 21 near the cylinder head sealing plane 17 or near the hot top land areas of the cylinder 13, and exits in the lower second jacket section 22. This has the advantage that the coolant enters the particularly hot at a relatively low temperature Areas of the cylinder assembly 130 can still absorb a lot of heat and only then flows through the cooler or less critical areas.
  • the arrangements of the coolant inlet 124, the coolant outlet 125 and the coolant transfer 36 are coordinated in such a way that the inflow, transfer and exit of the coolant takes place after the cylinder 13 has flowed around as completely as possible;
  • the coolant inlet 124 coolant transfer 36 or the coolant transfer 36 and the coolant outlet 125 are directly opposite one another with regard to the first throttle or blocking element 34 or the first throttle or blocking element 35, i.e. on different sides 341, 342; 351, 352 of the throttle or blocking elements 34, 35 arranged in order to achieve maximum flow around.
  • a defined direction of flow is specified by the throttle or blocking elements 34, 35. Arranging the first throttle or blocking element 34 directly next to the coolant inlet 124 prevents the formation of quiet zones in which the coolant stagnates. Because the overflow opening 361 is provided in the second jacket section 22 directly next to the second throttle or blocking element 35, the coolant is forced to flow completely around the cylinder 13 once, so that the best possible heat dissipation without pressure loss or without the formation of stagnation zones is possible becomes. The transition into the second jacket section 22 thus takes place approximately in the region of the coolant inlet 124 and thus practically opposite the coolant outlet 125, so that in the second jacket section 22 a practically complete flow around the cylinder 13 is also effected.
  • FIGS. 13 and 14 show an embodiment variant in which, as an alternative or in addition to the overflow opening 361 in the partition 31, at least one coolant transfer 36 is formed through an overflow channel 362 in the cylinder block 12 in the region of a second transverse plane E2 of the engine.

Abstract

L'invention concerne un moteur à combustion interne (10), comprenant un bloc-cylindres (12) avec une chemise de liquide de refroidissement (20), laquelle chemise de liquide de refroidissement entoure au moins partiellement un ensemble de cylindres (130), l'ensemble de cylindres étant disposé entre un plan d'étanchéité de culasse (17) et un carter de vilebrequin (160) et ayant au moins deux cylindres mutuellement adjacents (13) et laquelle chemise de liquide de refroidissement est divisée en une première partie de chemise (21) à distance du carter de moteur et une seconde partie de chemise (22) à proximité du carter de vilebrequin au moyen d'un séparateur (3), le séparateur (3) est formé par une cloison (31) d'un élément d'insert (30) qui est inséré dans la chemise de liquide de refroidissement (20), la cloison s'étendant au moins partiellement le long d'une périphérie d'au moins un cylindre (13) et l'élément d'insert (30) ayant, entre : une extrémité de tête de culasse (301) de l'élément d'insert (30), ladite extrémité de tête de culasse étant disposée dans la région d'une plaque de recouvrement (122) du bloc-cylindres (12), ladite plaque de recouvrement étant adjacente au plan d'étanchéité de la culasse (17) et la cloison (31), au moins une paroi de maintien (32) s'étendant sensiblement parallèlement aux cylindres (13). L'invention vise à permettre un bon refroidissement ainsi qu'une production simple. A cet effet, l'élément d'insert (30) présente, dans la zone de la plaque de recouvrement (122), au moins une saillie de repos (33), de préférence au moins deux saillies de repos (33), formée d'un seul tenant sur la paroi de maintien (32), au moins une saillie de repos reposant dans une poche de réception (123) du bloc-cylindres (12), ladite poche de réception (123) étant formée de manière inverse par rapport à la saillie de repos (33).
PCT/EP2022/079358 2021-10-21 2022-10-21 Moteur à combustion interne comprenant un bloc-cylindres WO2023067131A1 (fr)

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ATA50839/2021 2021-10-21
ATA50839/2021A AT525164B1 (de) 2021-10-21 2021-10-21 Brennkraftmaschine mit einem zylinderblock

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JPH11294254A (ja) 1998-04-09 1999-10-26 Toyota Motor Corp 内燃機関の冷却装置
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EP3239507A1 (fr) 2014-12-22 2017-11-01 Nichias Corporation Entretoise de chemise d'eau, moteur à combustion interne, et automobile
AT15665U1 (de) 2016-08-29 2018-04-15 Avl List Gmbh Kühlungsstruktur für eine Brennkraftmaschine
DE102018118804A1 (de) 2017-08-04 2019-02-07 Mazda Motor Corporation Kühlvorrichtung für einen Motor
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AT521945B1 (de) 2018-11-30 2020-08-15 Avl List Gmbh Brennkraftmaschine mit einem Kühlflüssigkeitsmantel
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EP3822473A1 (fr) 2019-11-18 2021-05-19 Mazda Motor Corporation Structure de refroidissement pour moteur, moteur et véhicule

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DE3310957A1 (de) 1982-04-15 1983-11-24 Nissan Motor Co., Ltd., Yokohama, Kanagawa Zylinderblock einer brennkraftmaschine mit innerer verbrennung
JPH11294254A (ja) 1998-04-09 1999-10-26 Toyota Motor Corp 内燃機関の冷却装置
US7032547B2 (en) 2004-04-22 2006-04-25 Honda Motor Co., Ltd. Cylinder block cooling arrangement for multi-cylinder internal combustion engine
JP2006242087A (ja) * 2005-03-02 2006-09-14 Mitsubishi Motors Corp 内燃機関のシリンダブロック冷却構造
WO2008010584A1 (fr) 2006-07-21 2008-01-24 Toyota Jidosha Kabushiki Kaisha Élément de séparation pour refroidir le passage d'un moteur à combustion interne, structure de refroidissement d'un moteur à combustion interne, et procédé pour former la structure de refroidissement
DE102015200811A1 (de) 2014-01-27 2015-07-30 Uchiyama Manufacturing Corp. Wassermantelzwischenstück
EP3239507A1 (fr) 2014-12-22 2017-11-01 Nichias Corporation Entretoise de chemise d'eau, moteur à combustion interne, et automobile
JP2016156363A (ja) * 2015-02-26 2016-09-01 株式会社日本自動車部品総合研究所 内燃機関
AT15665U1 (de) 2016-08-29 2018-04-15 Avl List Gmbh Kühlungsstruktur für eine Brennkraftmaschine
DE102018118804A1 (de) 2017-08-04 2019-02-07 Mazda Motor Corporation Kühlvorrichtung für einen Motor
AT521945B1 (de) 2018-11-30 2020-08-15 Avl List Gmbh Brennkraftmaschine mit einem Kühlflüssigkeitsmantel
JP2020114997A (ja) * 2019-01-17 2020-07-30 マツダ株式会社 エンジンの冷却構造
EP3822473A1 (fr) 2019-11-18 2021-05-19 Mazda Motor Corporation Structure de refroidissement pour moteur, moteur et véhicule
CN212406900U (zh) * 2020-02-21 2021-01-26 广州汽车集团股份有限公司 一种发动机缸体双层水套及发动机

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