EP3215730A1 - Moteur à combustion interne comprenant une chemise de refroidissement entourant les chambres de combustion - Google Patents

Moteur à combustion interne comprenant une chemise de refroidissement entourant les chambres de combustion

Info

Publication number
EP3215730A1
EP3215730A1 EP15767457.3A EP15767457A EP3215730A1 EP 3215730 A1 EP3215730 A1 EP 3215730A1 EP 15767457 A EP15767457 A EP 15767457A EP 3215730 A1 EP3215730 A1 EP 3215730A1
Authority
EP
European Patent Office
Prior art keywords
coolant
internal combustion
combustion engine
outlet
cylinder
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
EP15767457.3A
Other languages
German (de)
English (en)
Other versions
EP3215730B1 (fr
Inventor
Jan-Tilman Dörel
Christian Westphal
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.)
Volkswagen AG
Original Assignee
Volkswagen 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 Volkswagen AG filed Critical Volkswagen AG
Publication of EP3215730A1 publication Critical patent/EP3215730A1/fr
Application granted granted Critical
Publication of EP3215730B1 publication Critical patent/EP3215730B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F02F1/108—Siamese-type cylinders, i.e. cylinders cast together
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/02—Cylinders; Cylinder heads  having cooling means
    • F02F1/10—Cylinders; Cylinder heads  having cooling means for liquid cooling
    • F02F2001/106—Cylinders; Cylinder heads  having cooling means for liquid cooling using a closed deck, i.e. the water jacket is not open at the block top face

Definitions

  • the invention relates to an internal combustion engine having a plurality of adjacent combustion chambers in a cylinder bank in a cylinder bank, which are surrounded by a common coolant jacket, which can be supplied from an inlet and can be discharged through an outlet in at least two partial flows along different, on different sides Flux chambers arranged coolant jacket sections can be flowed through, which enclose between them the cylinder bank.
  • Cylinder bank systems known in the art generally direct coolant flow longitudinally past the aligned cylinders, from one end of the bank of cylinders to the other, as described, for example, in US 6,289,855 B1.
  • the temperature of the coolant increasing from the inlet end to the outlet end of the shell causes the cylinders to be cooled unevenly, which may cause vapor bubbles to form near the outlet end at high engine loads.
  • Intake passages to upper ends of the cylinder adjacent to the combustion chambers is conveyed.
  • the coolant is evenly distributed to the side flow slots along the cylinders and flows axially downward along the cylinders to cooler lower ends where it flows into
  • the cooling jacket is preferably separated in receiving and discharging sides of the cylinder bank and provided with separate inlet and outlet passages for each side.
  • the gears are provided with various flow passages to provide each cylinder with a same and separate coolant flow having the same coolant temperatures.
  • the flow inlets are formed with flow cross-sectional areas decreasing from the first cylinder at the inlet ends of the passages to the last cylinder Coolant flow from the flow through the cooling jacket to distribute equal to the cylinder.
  • the flow inlets and the flow outlets are separated between the cylinders and through partitions along the centerline of the row of cylinders at longitudinal ends of the aisles.
  • DE 103 57 340 A1 relates to an internal combustion engine having a plurality of combustion chambers arranged side by side, which are surrounded by a common coolant jacket.
  • the coolant jacket is assigned a coolant line element in the form of a collecting strip, which extends over a plurality of combustion chambers and via which coolant can be supplied to the coolant jacket and can be discharged as required.
  • Coolant jacket is realized by a plurality of coolant passages.
  • a flow-guiding element is used for equalizing one through the
  • Coolant passages guided coolant flow wherein at the same time the flow is branched.
  • the flow guide causes a reduction of individual
  • a cylinder crankcase for a reciprocating engine with at least one cylinder and with a cylinder at least partially surrounding water jacket is known, which is flowed through for cooling the cylinder of a cooling liquid, wherein laterally adjacent to the water jacket extends a water distribution channel.
  • US 4,455,972 A describes a cylinder block with a water box, wherein a flow-extending wall divides the water box into an upper and a lower portion. As seen in the direction of flow, the dividing wall is formed obliquely in such a way that the upper section narrows, whereas the lower section widens.
  • Subchannel system in the cylinder block by several, distributed over a cylinder head floor plate passages are supplied with coolant.
  • DE 24 17 925 C2 discloses a liquid-cooled multi-cylinder internal combustion engine, wherein separated from a water jacket surrounding the cylinder an additional
  • Coolant chamber is provided, which narrows horizontally in the flow direction and opens downstream in the water jacket.
  • a device for cooling webs between cylinders of a cylinder block of an internal combustion engine is known. These webs are arranged between cylinders cast together at least in the region of a cylinder block of an internal combustion engine and have cooling channels.
  • DE 198 12 831 A1 relates to an internal combustion engine having at least one fluid channel formed in the cylinder block.
  • the bottom of the coolant In order to achieve an optimized laminar flow of the coolant over an entire length of a cooling channel in the cylinder block, the bottom of the
  • the invention has the object, an internal combustion engine of the type mentioned in such a way that the flow losses occurring are low and at the same time at least approximately matching flow conditions are achieved in the partial streams.
  • an internal combustion engine in which the inlet is arranged on a first side and the outlet on a second side opposite the first side.
  • the inlet and the outlet are arranged on different sides with respect to the cylinder bank and the cylinder crankcase, a distribution of the supplied coolant is possible in a surprisingly simple manner such that the total flow resistance occurring in the respective partial flow substantially
  • Combustion exhaust additionally hits heated side of the cylinder crankcase. This provides the maximum cooling effect on the higher temperature side, thus improving the overall efficiency.
  • each coolant partial flow between the inlet and the outlet both a
  • Coolant jacket portion flows through on the first side and a coolant jacket portion on the second side, the entire coolant flow first meets the same side of the cylinder crankcase and is distributed there in two partial streams to the different combustion chambers associated coolant jacket regions, while each partial flow then facing away from the first side second side of the same combustion chambers.
  • the lengths of the partial flows between the inlet and outlet at least substantially coincide, so that in a otherwise symmetrical structure of the coolant jacket almost coincident
  • the coolant jacket is assigned a coolant line element with a coolant collection strip.
  • the cylinder crankcase and the cylinder crankcase Preferably, the cylinder crankcase and the cylinder crankcase
  • Cylinder head of the internal combustion engine acted upon by the coolant collecting bar together with the coolant, whereby a so-called recirculation system is realized.
  • the distribution of the cylinder crankcase on the one hand and the cylinder head on the other hand to be supplied coolant amount is preferably variable, for example, by an adjustable throttle element. In this way, the cooling effect, for example, be temporarily concentrated in dependence on detected operating parameters on the cylinder head.
  • Another, likewise particularly practical embodiment of the internal combustion engine according to the invention is achieved in that at least individual webs between adjacent combustion chambers with an opening connecting the two sides, in particular horizontal bore, are equipped. This succeeds, even the
  • a throttling is provided in an outside transition region of at least one coolant jacket section between the two sides of a combustion chamber in order to increase the flow fraction in the opening in the webs. This throttling can also be adjustable, for example.
  • a particularly preferred variant of the invention extends in the region of at least one web a passage up to an upper edge of the cylinder crankcase.
  • This one region of the coolant jacket forming passage can then optionally allow an overflow of the coolant in the region of the cylinder head or is by a
  • the outlet is arranged in an edge region facing the upper plane of the cylinder crankcase, so that the outlet is geodetically higher than the inlet in the case of a horizontal or only slightly inclined orientation of the cylinder row relative to the horizontal. Trapped air thus accumulates in the area of the outlet and can be removed there without difficulty.
  • a separate vent opening may be provided.
  • 1 shows a coolant jacket of an internal combustion engine.
  • Fig. 3 shows a further variant with a passage to a cylinder head.
  • An inventive, equipped with a coolant jacket internal combustion engine will be explained below with reference to Figures 1 to 3.
  • the internal combustion engine has four combustion chambers 1 arranged side by side in a row of cylinders, which are not shown in any more detail
  • Cylinder crankcases of the internal combustion engine are arranged.
  • the combustion chambers 1 are surrounded by a common coolant jacket 2 on both sides of the row of cylinders.
  • the coolant passes from a coolant collecting bar 3 through one as a feed
  • the coolant is discharged through an outlet 6 serving as a trigger.
  • the supplied coolant flow divides into two partial streams, which the cylinder bank into each other
  • the inlet 4 is arranged at an operating hot exhaust side 9 for the combustion gases of the internal combustion engine and the outlet 6 on a suction side 10 for the fresh air supplied to the internal combustion engine, the entire coolant flow is first fed to the relatively hotter side of the cylinder crankcase.
  • a substantial increase in efficiency in the cooling effect is achieved.
  • the respective total length of the coolant sub-streams between the inlet 4 and the outlet 6, which in each case both a coolant jacket section on the outlet side 9 and a coolant jacket section on the suction side 10 through agrees.
  • the webs 5 between the adjacent combustion chambers 1 each with a the outlet side 9 and the suction side 10 connecting, designed as a horizontal bore opening 1 1 are equipped. These are reliably flowed through on the cold suction side 10 due to the pressure gradient of the coolant between the coolant collecting strip 3 and the region of the outlet 6. By an additional throttling on the front sides of the coolant jacket by a free
  • the volume flow can be selectively forced through the openings 1 1, wherein the locking body 12 at the same time
  • FIG. 3 by way of example, a passage 13, which extends as far as an upper edge of the cylinder crankcase, is shown in the region of the webs 5. This variant allows advantageously that the coolant jacket 2 to the illustrated
  • Parting plane of the cylinder crankcase and the cylinder head can be flowed against.
  • Variant is especially advantageous if the opening 1 shown in Figure 1 1 of the webs 5 between the adjacent combustion chambers 1 is not possible, but due to the specific power of the internal combustion engine, an increased cooling capacity is required.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

L'invention concerne un moteur à combustion interne comprenant plusieurs chambres de combustion (1) qui sont juxtaposées dans une ligne de cylindres dans un bloc-cylindres et qui sont entourées de part et d'autre de la ligne de cylindres par une chemise de refroidissement (2) commune. Le réfrigérant parvient ainsi côté périphérie d'une barre collectrice de réfrigérant (3) aux parois non illustrées enserrant les chambres de combustion (1), en passant par une entrée (4) réalisée sous la forme d'une alimentation. Ensuite, le réfrigérant est évacué par une sortie (6) réalisée sous la forme d'une évacuation. Directement derrière l'entrée (4), le courant de réfrigérant amené se divise en deux parties, qui contournent la ligne de cylindres dans des directions d'écoulement (7, 8) opposées l'une à l'autre et se rejoignent dans la zone de la sortie (6). Du fait que l'entrée (4) est agencée sur un côté de sortie (9) chaud pendant le fonctionnement, destiné aux gaz de combustion du moteur à combustion interne, et que la sortie (6) est agencée sur un côté d'aspiration (10) de l'air frais amené au moteur à combustion interne, le courant de réfrigérant est tout d'abord amené dans son intégralité au côté relativement plus chaud du bloc-cylindres. L'efficacité du refroidissement est ainsi sensiblement accrue. En outre, chaque longueur totale respective des parties du courant de réfrigérant, entre l'entrée (4) et la sortie (6), qui traversent chacune aussi bien une section de chemise de refroidissement sur le côté de sortie (9) qu'une section de chemise de refroidissement sur le côté d'aspiration (10), est identique. Cet ensemble permet une équi-répartition très avantageuse de l'écoulement et des points d'étranglement dans les parties du courant, due en particulier aux vis de culasse situées dans le bloc-cylindres, sans qu'un étranglement supplémentaire ne soit possible.
EP15767457.3A 2014-11-06 2015-09-16 Moteur à combustion interne comprenant une chemise de refroidissement entourant les chambres de combustion Active EP3215730B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014222734.8A DE102014222734A1 (de) 2014-11-06 2014-11-06 Brennkraftmaschine mit einem die Brennräume umgebenden Kühlmittelmantel
PCT/EP2015/071237 WO2016071031A1 (fr) 2014-11-06 2015-09-16 Moteur à combustion interne comprenant une chemise de refroidissement entourant les chambres de combustion

Publications (2)

Publication Number Publication Date
EP3215730A1 true EP3215730A1 (fr) 2017-09-13
EP3215730B1 EP3215730B1 (fr) 2021-04-14

Family

ID=54185944

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15767457.3A Active EP3215730B1 (fr) 2014-11-06 2015-09-16 Moteur à combustion interne comprenant une chemise de refroidissement entourant les chambres de combustion

Country Status (3)

Country Link
EP (1) EP3215730B1 (fr)
DE (1) DE102014222734A1 (fr)
WO (1) WO2016071031A1 (fr)

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1468508A (en) 1973-04-12 1977-03-30 Perkins Engines Ltd Engine cooling system
JPS58156143U (ja) 1982-04-15 1983-10-18 日産自動車株式会社 シリンダブロツクのウオ−タジヤケツト構造
DE3247663C1 (de) 1982-12-23 1984-04-05 Ford-Werke AG, 5000 Köln Zylinderblock fuer einen Verbrennungsmotor
DE4140772A1 (de) 1990-12-14 1992-06-17 Daimler Benz Ag Vorrichtung zur kuehlung der stege zwischen zylindern eines zylinderblocks einer brennkraftmaschine
JP3355635B2 (ja) * 1991-11-21 2002-12-09 トヨタ自動車株式会社 内燃機関のシリンダブロック
DE4407984A1 (de) 1994-03-10 1995-09-14 Opel Adam Ag Kühlsystem für eine Hubkolbenbrennkraftmaschine
DE19812831A1 (de) 1998-03-24 1999-09-30 Volkswagen Ag Brennkraftmaschine mit Fluidkühlsystem
SE521785C2 (sv) * 1999-11-12 2003-12-09 Volvo Personvagnar Ab Förbränningsmotor
US6289855B1 (en) 2000-01-12 2001-09-18 General Motors Corporation Engine block for internal combustion engine
KR100656594B1 (ko) * 2002-10-24 2006-12-11 현대자동차주식회사 분리 냉각 시스템이 적용되는 엔진의 실린더 헤드와실린더 블럭용 워터 자켓의 구조
DE10306695A1 (de) * 2003-02-18 2004-09-16 Daimlerchrysler Ag Brennkraftmaschine mit einem Kühlmittelkreislauf
DE10357340A1 (de) 2003-12-09 2005-08-04 Daimlerchrysler Ag Brennkraftmaschine mit Kühlmittelströmungsleitelement
US7225766B2 (en) 2004-04-21 2007-06-05 General Motors Corporation Engine cylinder cooling jacket
JP2010164006A (ja) * 2009-01-16 2010-07-29 Toyota Motor Corp シリンダブロックの冷却構造
US9593640B2 (en) * 2011-03-21 2017-03-14 GM Global Technology Operations LLC Engine assembly including cylinder head cooling
CN103670768A (zh) * 2012-09-07 2014-03-26 北京汽车动力总成有限公司 发动机冷却水套及发动机冷却系统
DE102012021065A1 (de) 2012-10-20 2013-08-22 Daimler Ag Verfahren zum Herstellen eines Zylinderkurbelgehäuses sowie Zylinderkurbelgehäuse
CN203640848U (zh) * 2013-12-20 2014-06-11 东风汽车公司 分流式发动机冷却水套

Also Published As

Publication number Publication date
EP3215730B1 (fr) 2021-04-14
WO2016071031A1 (fr) 2016-05-12
DE102014222734A1 (de) 2016-05-12

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