EP3215730A1 - Internal combustion engine having a coolant jacket which surrounds the combustion chambers - Google Patents
Internal combustion engine having a coolant jacket which surrounds the combustion chambersInfo
- 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
Links
- 239000002826 coolant Substances 0.000 title claims abstract description 98
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 73
- 239000000567 combustion gas Substances 0.000 claims abstract description 4
- 230000007704 transition Effects 0.000 claims description 2
- 238000001816 cooling Methods 0.000 abstract description 21
- 238000009826 distribution Methods 0.000 abstract description 4
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 239000000110 cooling liquid Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
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
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014222734.8A DE102014222734A1 (en) | 2014-11-06 | 2014-11-06 | Internal combustion engine with a coolant jacket surrounding the combustion chambers |
PCT/EP2015/071237 WO2016071031A1 (en) | 2014-11-06 | 2015-09-16 | Internal combustion engine having a coolant jacket which surrounds the combustion chambers |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3215730A1 true EP3215730A1 (en) | 2017-09-13 |
EP3215730B1 EP3215730B1 (en) | 2021-04-14 |
Family
ID=54185944
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15767457.3A Active EP3215730B1 (en) | 2014-11-06 | 2015-09-16 | Internal combustion engine having a coolant jacket which surrounds the combustion chambers |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3215730B1 (en) |
DE (1) | DE102014222734A1 (en) |
WO (1) | WO2016071031A1 (en) |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1468508A (en) | 1973-04-12 | 1977-03-30 | Perkins Engines Ltd | Engine cooling system |
JPS58156143U (en) | 1982-04-15 | 1983-10-18 | 日産自動車株式会社 | Cylinder block water jacket structure |
DE3247663C1 (en) | 1982-12-23 | 1984-04-05 | Ford-Werke AG, 5000 Köln | Cylinder block for an internal combustion engine |
DE4140772A1 (en) | 1990-12-14 | 1992-06-17 | Daimler Benz Ag | Cooling device for bridges between cylinders in IC engine block - has arrangement to direct water flow between cylinder block and cylinder head |
JP3355635B2 (en) * | 1991-11-21 | 2002-12-09 | トヨタ自動車株式会社 | Cylinder block for internal combustion engine |
DE4407984A1 (en) | 1994-03-10 | 1995-09-14 | Opel Adam Ag | Cooling system for a reciprocating piston internal combustion engine |
DE19812831A1 (en) | 1998-03-24 | 1999-09-30 | Volkswagen Ag | Internal combustion engine with fluid cooling system |
SE521785C2 (en) * | 1999-11-12 | 2003-12-09 | Volvo Personvagnar Ab | Internal combustion engine |
US6289855B1 (en) | 2000-01-12 | 2001-09-18 | General Motors Corporation | Engine block for internal combustion engine |
KR100656594B1 (en) * | 2002-10-24 | 2006-12-11 | 현대자동차주식회사 | water jacket structure of cylinder block and cylinder head for engines adapted spilt cooling system |
DE10306695A1 (en) * | 2003-02-18 | 2004-09-16 | Daimlerchrysler Ag | Internal combustion engine with a coolant circuit |
DE10357340A1 (en) | 2003-12-09 | 2005-08-04 | Daimlerchrysler Ag | Internal combustion engine, especially motor vehicle piston engine, with coolant flow control element has at least one coolant passage between coolant line and coolant casing in form of grid |
US7225766B2 (en) | 2004-04-21 | 2007-06-05 | General Motors Corporation | Engine cylinder cooling jacket |
JP2010164006A (en) * | 2009-01-16 | 2010-07-29 | Toyota Motor Corp | Cooling structure for cylinder block |
US9593640B2 (en) * | 2011-03-21 | 2017-03-14 | GM Global Technology Operations LLC | Engine assembly including cylinder head cooling |
CN103670768A (en) * | 2012-09-07 | 2014-03-26 | 北京汽车动力总成有限公司 | Engine cooling water jacket and engine cooling system |
DE102012021065A1 (en) | 2012-10-20 | 2013-08-22 | Daimler Ag | Manufacturing cylinder for reciprocating piston engine, comprises producing water jacket which surrounds cylinder for cooling, and -water distribution channel adjacent to water jacket using expendable core, which is cast in casting material |
CN203640848U (en) * | 2013-12-20 | 2014-06-11 | 东风汽车公司 | Bypass engine cooling water jacket |
-
2014
- 2014-11-06 DE DE102014222734.8A patent/DE102014222734A1/en not_active Withdrawn
-
2015
- 2015-09-16 WO PCT/EP2015/071237 patent/WO2016071031A1/en active Application Filing
- 2015-09-16 EP EP15767457.3A patent/EP3215730B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
DE102014222734A1 (en) | 2016-05-12 |
WO2016071031A1 (en) | 2016-05-12 |
EP3215730B1 (en) | 2021-04-14 |
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