EP0819837A1 - Circuit de refroidissement d'un moteur à combustion interne - Google Patents

Circuit de refroidissement d'un moteur à combustion interne Download PDF

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Publication number
EP0819837A1
EP0819837A1 EP97109470A EP97109470A EP0819837A1 EP 0819837 A1 EP0819837 A1 EP 0819837A1 EP 97109470 A EP97109470 A EP 97109470A EP 97109470 A EP97109470 A EP 97109470A EP 0819837 A1 EP0819837 A1 EP 0819837A1
Authority
EP
European Patent Office
Prior art keywords
cooling water
cylinder
internal combustion
combustion engine
slot
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP97109470A
Other languages
German (de)
English (en)
Other versions
EP0819837B1 (fr
Inventor
Antonius Rehr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dr Ing HCF Porsche AG
Original Assignee
Dr Ing HCF Porsche AG
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 Dr Ing HCF Porsche AG filed Critical Dr Ing HCF Porsche AG
Publication of EP0819837A1 publication Critical patent/EP0819837A1/fr
Application granted granted Critical
Publication of EP0819837B1 publication Critical patent/EP0819837B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/02—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
    • 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
    • F01P2007/143—Controlling of coolant flow the coolant being liquid using restrictions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B2075/1804—Number of cylinders
    • F02B2075/1824—Number of cylinders six
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B75/24—Multi-cylinder engines with cylinders arranged oppositely relative to main shaft and of "flat" type
    • F02B75/243—Multi-cylinder engines with cylinders arranged oppositely relative to main shaft and of "flat" type with only one crankshaft of the "boxer" type, e.g. all connecting rods attached to separate crankshaft bearings
    • 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 a cooling circuit of an internal combustion engine of the type of claim 1.
  • a generic internal combustion engine is described in DE 43 22 030 A1, in the cooling circuit of the cooling water jacket of a cylinder block and the Cooling water channels of a cylinder head via cooling water channels with a Cooling water pump are connected.
  • the cooling water channels are inside the Cylinder block of the internal combustion engine arranged and as a feed or Return channels formed.
  • the cooling water channels are partly as Bores formed in the cylinder block, which in a main channel Cooling water flow open. These holes serve to supply the Cooling water channels in the cylinder head.
  • Problematic with such a cooling circuit is the connection of the cooling water jacket in the cylinder block to the holes Main channels.
  • a cylinder block is also known, in which two Rows of cylinders are arranged V-shaped to each other.
  • the cooling water flow to the Cooling water jackets within the cylinder blocks take place via a longitudinal channel, which in the Gusset of the V-shaped cylinder is integrated.
  • the connection of the The longitudinal channel to the cylinder blocks is made directly via relatively wide, cast-in Indentations.
  • the invention is based on the object, a generic To improve the cooling circuit of an internal combustion engine so that the Connection between the cooling water jacket within the cylinder block and the Cooling water guides can be manufactured easily and reliably and for one Series production is suitable.
  • fluidically relevant should Areas (throttling points, transitions) with a high degree of accuracy with regard to their Location and assignment to individual sections of the cooling circuit can be produced.
  • the simplest possible adjustment of the flow rates within of the cooling circuit may be possible.
  • a high degree of accuracy in the coordination of the cooling water flow is advantageous Way reached when the depth of the slot to connect the cooling water jacket and the cooling water supply is larger than its width.
  • the influence of the post-processing of the cast blank on the Cross-sectional area of the slots is minimized when the width B of the slots is on Dimension is reduced that (just) can still be produced reliably.
  • the depth T of the respective slot is therefore relative large, so that the influence of the removal rate in the post-processing of the Flange area is minimized.
  • a uniform flow around the cylinder is particularly advantageous achieved when the slot connected to the cooling water jacket is approximately radial to the adjacent cylinder takes place.
  • the flow through the cooling water jacket is also clear once again more even if there is one inlet and one outlet slot per cylinder are provided.
  • Crossflow cooling can thus be carried out in a particularly simple manner be formed within the cylinder block. This cross flow cooling becomes very even if the input and output slots are diametrical are arranged.
  • Such a cooling water guide with cast slots for connecting Cooling water jacket and cooling water channels within the cylinder block are suitable in a particularly advantageous manner for cylinder blocks that are constructed in an open-deck design are.
  • the internal combustion engine shown in this embodiment has two Rows of cylinders at a V-angle of 180 degrees and have one vertically along one Partition level E - E separate crankcase with two halves 1, 2, which Cylinder blocks 3, 4 include.
  • a longitudinal axis A runs in this division plane E-E, which is also the axis of rotation of a crankshaft, not shown. This is over Connecting rod 5 connected to piston 6, which is in a horizontal plane H - H move.
  • Each cylinder bank is assigned a cylinder head 7, which in one Partition plane T - T on a crankcase half 1, 2 or on the respective one Cylinder block 3, 4 is placed.
  • the cylinder heads 7 have not shown Gas exchange valves provided inlet and outlet channels 8 and 9.
  • the Cylinder blocks of each row of cylinders have cooling water jackets 10 and the cylinder heads 7 cooling water channels 11.
  • a cooling water pump not shown, arranged. This promotes over two outflow openings 14 cooling water to the cylinder rows 1, 2.
  • One of these Outflow openings 14 are used as inlet openings 15 in a main feed channel 16 trained, which is assigned to the cylinder bank 1.
  • the other outflow opening is in a downward discharge flange 17 is formed.
  • a second Main feed channel 20 is the one that is spaced apart from the cooling water pump Cylinder row 2 assigned and by means of a connecting channel 21 to the Outflow flange 17 connected.
  • the two main feed channels run adjacent to the respective parting plane T - T below and parallel to the longitudinal axis A in a lower wall 18, 19 of the respective cylinder block 3, 4.
  • a section 22 of the channel 21 is designed as a heat exchanger tube 23 and does not extend with it cooling fins shown on its outer jacket provided in an oil pan 24 of the Internal combustion engine.
  • the heat exchanger tube 23 bridges the division plane E - E and is connected to a further, formed in the lower wall 19 section 25 of the Connection channel 21 connected.
  • the main feed and return channels 16, 20 and 28, 29, the transverse channel 31 and the section 25 of the connecting channel 21 are in the walls 18, 19, 26, 27 poured.
  • the further construction of the cooling circuit will only be illustrated here the cylinder row 2 shown on the right in FIG. 1 is explained.
  • the one in the left Part of the cooling circuit formed in cylinder bank 1 is designed in an analogous manner.
  • In the main feed channel 20 opens one of the each cylinder of the cylinder bank Flange surface 33 (parting plane T-T) outgoing channel 34a to 34c.
  • These channels 34a to 34c are cast technology and cylindrical in this embodiment and serve to connect the main feed channel 20 to the cooling water channels 11 of the cylinder head 7.
  • the cooling water channels 11 of the cylinder head have each Cylinder has a cast-in inlet section 35, which in the region of the flange surface 33 via a cylinder head gasket, not shown, with the respective assigned channel 34a to 34c is connected.
  • Return sections 37 in the cylinder head 7 connected to the cooling water channels 11 are.
  • the channels 34a to 34c and 36a to 36c run at a distance from the Cooling water jacket 10, i.e. they have a larger radial distance from the Cylinder axis 38 as the adjacent section of the cooling water jacket 10.
  • Der Cooling water jacket 10 is in each cylinder via a slot 39a to 39c with the associated channel 34a to 34c connected.
  • the Cooling water jacket 10 On the opposite side is the Cooling water jacket 10 with a respective slot 40a to 40c each connected to one of the channels 36a to 36c.
  • the slots 39a to 39c go from of the flange surface 33 and extend in the direction of the cylinder axis 38 and are like the channels 34a to 34c and 36a to 36c in the same casting process produced.
  • the cooling water jacket 10 is in the area through the slots 39a to 39c each cylinder via the channels 34a to 34c with the main supply channel 20 of the Cooling circuit connected.
  • the Cooling water jacket 10 per cylinder via the slots 40a to 40c and the channels 36a to 36c connected to the main return duct 29. In operation of the internal combustion engine A cross flow can thus occur in the area of the cylinder block.
  • the entrance areas are the Slots 39a to 39c (on their side facing the respective channel 34a to 34c) rounded, i.e. provided with inlet radii.
  • the slots 39a to 39c on the input side radially to the cylinder axis.
  • the outlet slots 40a to 40c arranged diametrically to it and also run radially to Cylinder axis.
  • the inlet and outlet slots on each cylinder are for Achieving a uniform cross-flow cooling arranged so that they each in the middle of the cylinder (based on the length of the cylinder block) opposite, i.e. their connecting line, not shown, is at right angles for the longitudinal extension of the cylinder block.
  • the cooling water pump delivers along the directional arrows drawn in Fig. 1 a cooling water flow over the Inlet opening 15 or the connecting duct 21 into the main feed ducts 16 and 20, of which the water flow from the end face 12 along the axis A on the is divided into two rows of cylinders.
  • the channels 34a to 34c on the input side and the outlet-side channels 36a to 36c become the cooling water channels 11 in FIG Flows through cylinder heads 7.
  • the cooling water flow can be coordinated. It is especially the distance of the respective cylinder from the cooling water pump consider.
  • the cooling water flow is sensibly coordinated either uniformly on the upstream or downstream side.
  • each channel determines the proportion of each cylinder assigned partial flow.
  • An even distribution of the partial flows per cylinder can be adapted to the respective pressure losses
  • Cross-sectional dimensions of the channels take place. This is advantageously carried out Coordination of the partial flows per cylinder on the input side, since the tolerance-related deviations of the individual pressure losses at this point are relatively small.
  • the dimensions of the drain-side channels become Reduction of throttling losses usefully kept larger.
  • each partial stream of the water cycle is switched on branched off further partial flow, which is used to supply the respective section of the Cooling water jacket 10 is used.
  • the flow cross section of the respective slot thus determines the cylinder-related distribution of the cooling water partial flow to the Cylinder head on the one hand and the cylinder block on the other hand, during the Flow cross section of the respective channel the cylinder-related total partial flow (Cylinder head + cylinder block) determined.
  • the A defined division of the flow cross-section of the respective slots takes place cylinder-related partial flow on the cylinder head and the cylinder block. This too The division takes place in a sensible manner by coordinating the flow cross sections the input side, i.e. through coordinated dimensioning of the flow cross-sections of slots 39a to 39c.
  • the flow cross-sections of the slots on the outlet side 40a to 40c are correspondingly larger in order to make one as possible to enable throttle-free return.
  • the slots are like this formed that its depth T is greater than its width B. The influence of Removal rate when machining the flange surface 33 can thus be kept low will.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
EP97109470A 1996-07-17 1997-06-11 Circuit de refroidissement d'un moteur à combustion interne Expired - Lifetime EP0819837B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19628762A DE19628762A1 (de) 1996-07-17 1996-07-17 Kühlkreislauf einer Brennkraftmaschine
DE19628762 1996-07-17

Publications (2)

Publication Number Publication Date
EP0819837A1 true EP0819837A1 (fr) 1998-01-21
EP0819837B1 EP0819837B1 (fr) 2001-12-05

Family

ID=7800034

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97109470A Expired - Lifetime EP0819837B1 (fr) 1996-07-17 1997-06-11 Circuit de refroidissement d'un moteur à combustion interne

Country Status (5)

Country Link
US (1) US5915346A (fr)
EP (1) EP0819837B1 (fr)
JP (1) JP3941979B2 (fr)
KR (1) KR100426765B1 (fr)
DE (2) DE19628762A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19803885B4 (de) * 1998-01-31 2013-02-07 Bayerische Motoren Werke Aktiengesellschaft Kühlkreisanordnung für eine flüssigkeitsgekühlte Brennkraftmaschine
DE10021525A1 (de) 2000-05-03 2001-11-15 Porsche Ag Kühlkreislauf für eine mehrzylindrige Brennkraftmaschine
JP3924446B2 (ja) * 2001-09-25 2007-06-06 株式会社クボタ 縦型多気筒エンジン
DE10260535A1 (de) * 2002-12-21 2004-07-08 Mtu Aero Engines Gmbh Verfahren zur Herstellung von aus Halbrohren oder Rohren bestehenden Wärmetauscherrohren für Rekuperativ-Abgaswärmetauscher
JP4305118B2 (ja) * 2003-10-10 2009-07-29 日産自動車株式会社 内燃機関のシリンダブロック
JP5903002B2 (ja) * 2012-06-08 2016-04-13 富士重工業株式会社 エンジンの冷却装置
DE102015013202B4 (de) 2015-10-09 2020-09-10 Deutz Aktiengesellschaft Fluidkreislauf einer Brennkraftmaschine
DE102015014514B4 (de) * 2015-11-11 2023-10-26 Deutz Aktiengesellschaft "Common-Rail" Wassermantel
CN113287251A (zh) * 2019-01-10 2021-08-20 三菱重工发动机和增压器株式会社 马达和逆变器一体型旋转电机
FR3105649B1 (fr) * 2019-12-19 2021-11-26 Valeo Equip Electr Moteur Machine électrique tournante refroidie

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4015610A1 (de) * 1989-05-15 1990-11-22 Honda Motor Co Ltd Fluessigkeitsgekuehlter verbrennungsmotor
DE4001140C1 (en) * 1990-01-17 1991-04-11 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De Cylinder block for liquid cooled IC engine - has coolant channels in internal angle of V=shaped block
DE4322030A1 (de) * 1993-07-02 1995-01-12 Porsche Ag Brennkraftmaschine mit zwei Zylinderreihen

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD51736A (fr) *
US2713332A (en) * 1953-03-27 1955-07-19 Int Harvester Co Internal combustion engine cooling system
BE755473A (fr) * 1970-01-05 1971-02-01 Outboard Marine Corp Systeme de controle de la temperature d'un moteur
US4284037A (en) * 1978-12-18 1981-08-18 Cummins Engine Company, Inc. Internal combustion engine coolant system
US4312304A (en) * 1979-08-06 1982-01-26 Brunswick Corporation V-Engine cooling system particularly for outboard motors
US4346676A (en) * 1979-08-06 1982-08-31 Brunswick Corporation Two-cycle V-engine with integrally cast exhaust manifold
DE3326317A1 (de) * 1983-07-21 1985-01-31 Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart Zylinderblock
US4601265A (en) * 1985-06-28 1986-07-22 Cummins Engine Company, Inc. Internal combustion engine with improved coolant arrangement
US4729347A (en) * 1986-10-27 1988-03-08 Schmitz Donald L Internal combustion chamber
FR2683263A1 (fr) * 1991-10-31 1993-05-07 Smh Management Services Ag Moteur a combustion interne avec circuit de refroidissement perfectionne.
JPH09189226A (ja) * 1995-12-30 1997-07-22 Sanshin Ind Co Ltd 船外機の妨蝕装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4015610A1 (de) * 1989-05-15 1990-11-22 Honda Motor Co Ltd Fluessigkeitsgekuehlter verbrennungsmotor
DE4001140C1 (en) * 1990-01-17 1991-04-11 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De Cylinder block for liquid cooled IC engine - has coolant channels in internal angle of V=shaped block
DE4322030A1 (de) * 1993-07-02 1995-01-12 Porsche Ag Brennkraftmaschine mit zwei Zylinderreihen

Also Published As

Publication number Publication date
DE59705629D1 (de) 2002-01-17
JPH1077832A (ja) 1998-03-24
DE19628762A1 (de) 1998-01-22
JP3941979B2 (ja) 2007-07-11
KR980009798A (ko) 1998-04-30
US5915346A (en) 1999-06-29
EP0819837B1 (fr) 2001-12-05
KR100426765B1 (ko) 2004-06-16

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