WO2005106232A1 - Conduit de refroidissement moteur - Google Patents
Conduit de refroidissement moteur Download PDFInfo
- Publication number
- WO2005106232A1 WO2005106232A1 PCT/FR2005/050256 FR2005050256W WO2005106232A1 WO 2005106232 A1 WO2005106232 A1 WO 2005106232A1 FR 2005050256 W FR2005050256 W FR 2005050256W WO 2005106232 A1 WO2005106232 A1 WO 2005106232A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- conduit
- duct
- cooling fluid
- turbulence
- cooling
- Prior art date
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
- 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
Definitions
- the present invention relates to the removal of heat from a material in contact with a coolant, and more particularly the cooling of the parts of an internal combustion engine of a motor vehicle, such as for example the cooling of the partition separating two adjacent cylinders of an internal combustion engine cylinder block.
- a cylinder block is a fixed part of an internal combustion engine. It is generally produced by molding, and has cavities, called chambers, in which a fluid circulates to cool the cylinders.
- the partition separating two adjacent cylinders is in contact with the cooling fluid only over a small area. In order to improve the cooling of the partition, drilling is carried out connecting the two water chambers.
- the patent FR 2609501 describes a cooling duct pierced in the partition separating two adjacent cylinders, one end of which is in relation to a first water chamber of the cylinder block, and the other of which opens into a second water chamber.
- a cooling duct comprising means creating turbulence in the flow.
- the turbulence means provide the surface of the conduit which is in contact with the cooling fluid with a roughness of at least 100 ⁇ m.
- the turbulence means can be produced on all or part of the duct.
- These turbulence means can consist of a thread. The advantage of using a thread is that it comes from a simple machining operation which follows the drilling operation of the conduit. In addition, the height of the threads can be adjusted at the time of the tapping operation so as to have the best compromise between heat exchange and flow speed as a function of the diameter of the conduit and the pressure difference between the two chambers.
- This duct may be in relation to two chambers of the same part, or it may be in relation to chambers of different parts of the engine.
- the chambers are considered to be separate, that is to say that the cooling fluid circulating in these chambers is not at the same pressure value.
- it may be related to a cylinder head chamber and to a chamber of the cylinder block.
- the invention also provides for this purpose an internal combustion engine part having at least two chambers in which a cooling fluid circulates, the chambers being connected by at least one conduit in which the cooling fluid also circulates, the conduit comprising means for turbulence of the flow of cooling fluid circulating inside.
- the invention also provides for this purpose an internal combustion engine comprising at least two parts each having at least one chamber, and having at least one duct connecting a chamber of the first part to a chamber of the second part, characterized in that the duct comprises means for turbulence in the flow of cooling fluid which circulates inside this duct.
- the invention also provides a method of manufacturing a cooling duct produced in a part of a motor vehicle, the duct being in relation to at least one chamber in which a cooling fluid circulates, the method comprising a step of piercing the duct in the room and a step of • • shaping of means for turbulence of the flow circulating in this conduit.
- the shaping step can be a step of threading the conduit.
- FIG. 1 is a top view partial view of a cylinder block showing the position of a conduit drilled in the partition separating two adjacent cylinders.
- - Figure 2 is a sectional view of the partition in which the conduit according to the invention is pierced.
- FIG. 1 shows a top view of a part of a cylinder casing 1 of an internal combustion engine.
- the cylinder casing 1 is a molded part made of steel, cast iron or even aluminum.
- H has outer walls 2, and at least two hollow cylinders 3 and 4 provided to receive the pistons of the engine.
- the cylinders 3 and 4 are longitudinally adjacent, that is to say in the direction of the length of the cylinder housing 1.
- a partition 5 separates them.
- the adjacent cylinders can touch.
- the partition represents the part common to the two adjacent cylinders.
- Chambers 6 and 7 are arranged on each side of the assembly consisting of cylinders 3 and 4.
- a fluid circulates in chambers 6 and 7 to cool the cylinders 3 and 4.
- Chambers 6 and 7 are considered to be separate, it that is to say that the cooling fluid circulating in these chambers is not at the same pressure value.
- the partition 5 has a duct 8 which connects the two water chambers 6 and 7. The duct 8 makes it possible to improve the cooling of the partition 5.
- the conduit 8 is produced by drilling your partition 5.
- a hole can be provided for passing the forest in the outer walls 2.
- the passage orifice can be closed subsequently with an insert 10.
- the conduit 8 drilled inside the partition 5 comprises means for turbulence of the flow of cooling fluid flowing in this duct.
- These means correspond to a thread 9 produced by tapping the conduit 8. This operation follows the drilling operation.
- the thread 9 can be produced over all or part of the length of the conduit.
- the height of the threads of the thread 9 must at least allow an average roughness of 100 ⁇ m to be obtained.
- the crest of the threads of the thread 9 can be of projecting shape, or rounded to limit the drop in flow in the conduit.
- These turbulence means make it possible to reduce the thickness of the boundary layer of the flow of cooling fluid.
- These means also make it possible to increase the exchange surfaces between the material of the partition 5 and the cooling fluid and therefore to improve the cooling of the partition 5.
- These means are particularly advantageous in areas where the thermomechanical constraints are high. and whose size is limited.
- the conduit can consist of a tube inserted in the casting of the cylinder block, It can also be inserted by fitting into a hole in the partition.
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)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05746650A EP1743094A1 (fr) | 2004-04-26 | 2005-04-18 | Conduit de refroidissement moteur |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0450780A FR2869356B1 (fr) | 2004-04-26 | 2004-04-26 | Conduit de refroidissement moteur |
FR0450780 | 2004-04-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005106232A1 true WO2005106232A1 (fr) | 2005-11-10 |
Family
ID=34944582
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2005/050256 WO2005106232A1 (fr) | 2004-04-26 | 2005-04-18 | Conduit de refroidissement moteur |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1743094A1 (fr) |
FR (1) | FR2869356B1 (fr) |
WO (1) | WO2005106232A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007041010A1 (de) * | 2007-08-29 | 2009-03-05 | Mahle International Gmbh | Zylinderkurbelgehäuse für einen Verbrennungsmotor |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1752643A1 (fr) * | 2005-08-08 | 2007-02-14 | Bayerische Motorenwerke Aktiengesellschaft | Moteur à combustion interne avec au moins deux cylindres |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1751408A1 (de) * | 1968-05-24 | 1971-07-01 | Daimler Benz Ag | Zylinderkopf fuer insbesondere luftgekuehlte Brennkraftmaschinen |
EP0223158A1 (fr) * | 1985-11-22 | 1987-05-27 | FIAT AUTO S.p.A. | Bloc de moteur à combustion |
FR2609501A1 (fr) * | 1987-01-09 | 1988-07-15 | Peugeot | Moteur a combustion interne muni de moyens perfectionnes de refroidissement du bloc-cylindres |
JPH05214933A (ja) * | 1992-02-06 | 1993-08-24 | Mitsubishi Heavy Ind Ltd | 内燃機関のシリンダ |
JPH07109952A (ja) * | 1993-08-20 | 1995-04-25 | Nissan Motor Co Ltd | 水冷式内燃機関のシリンダブロック |
-
2004
- 2004-04-26 FR FR0450780A patent/FR2869356B1/fr not_active Expired - Fee Related
-
2005
- 2005-04-18 WO PCT/FR2005/050256 patent/WO2005106232A1/fr not_active Application Discontinuation
- 2005-04-18 EP EP05746650A patent/EP1743094A1/fr not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1751408A1 (de) * | 1968-05-24 | 1971-07-01 | Daimler Benz Ag | Zylinderkopf fuer insbesondere luftgekuehlte Brennkraftmaschinen |
EP0223158A1 (fr) * | 1985-11-22 | 1987-05-27 | FIAT AUTO S.p.A. | Bloc de moteur à combustion |
FR2609501A1 (fr) * | 1987-01-09 | 1988-07-15 | Peugeot | Moteur a combustion interne muni de moyens perfectionnes de refroidissement du bloc-cylindres |
JPH05214933A (ja) * | 1992-02-06 | 1993-08-24 | Mitsubishi Heavy Ind Ltd | 内燃機関のシリンダ |
JPH07109952A (ja) * | 1993-08-20 | 1995-04-25 | Nissan Motor Co Ltd | 水冷式内燃機関のシリンダブロック |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 017, no. 656 (M - 1521) 6 December 1993 (1993-12-06) * |
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 07 31 August 1995 (1995-08-31) * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007041010A1 (de) * | 2007-08-29 | 2009-03-05 | Mahle International Gmbh | Zylinderkurbelgehäuse für einen Verbrennungsmotor |
Also Published As
Publication number | Publication date |
---|---|
EP1743094A1 (fr) | 2007-01-17 |
FR2869356A1 (fr) | 2005-10-28 |
FR2869356B1 (fr) | 2008-07-11 |
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