EP2789824A1 - Kühlvorrichtung mit geringem Platzbedarf für Verbrennungsmotor, und Herstellungsverfahren einer solchen Vorrichtung - Google Patents

Kühlvorrichtung mit geringem Platzbedarf für Verbrennungsmotor, und Herstellungsverfahren einer solchen Vorrichtung Download PDF

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Publication number
EP2789824A1
EP2789824A1 EP20140163806 EP14163806A EP2789824A1 EP 2789824 A1 EP2789824 A1 EP 2789824A1 EP 20140163806 EP20140163806 EP 20140163806 EP 14163806 A EP14163806 A EP 14163806A EP 2789824 A1 EP2789824 A1 EP 2789824A1
Authority
EP
European Patent Office
Prior art keywords
cooling device
tube
supply
cooling
orientation
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
EP20140163806
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English (en)
French (fr)
Other versions
EP2789824B1 (de
Inventor
Denis Clement
Stéphane Perotto
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.)
Bontaz Centre R&D SAS
Original Assignee
Bontaz Centre R&D SAS
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 Bontaz Centre R&D SAS filed Critical Bontaz Centre R&D SAS
Priority to DE14163806.4T priority Critical patent/DE14163806T1/de
Publication of EP2789824A1 publication Critical patent/EP2789824A1/de
Application granted granted Critical
Publication of EP2789824B1 publication Critical patent/EP2789824B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F01P3/06—Arrangements for cooling pistons
    • 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
    • F01P3/06—Arrangements for cooling pistons
    • F01P3/08—Cooling of piston exterior only, e.g. by jets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/08—Lubricating systems characterised by the provision therein of lubricant jetting means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/16—Controlling lubricant pressure or quantity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/08—Lubricating systems characterised by the provision therein of lubricant jetting means
    • F01M2001/083—Lubricating systems characterised by the provision therein of lubricant jetting means for lubricating cylinders
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49249—Piston making

Definitions

  • the present invention relates to a reduced space cooling device for an internal combustion engine and to a method of manufacturing such a cooling device.
  • a piston cooling nozzle of an internal combustion engine allows a coolant such as oil to be projected onto an appropriate area of the piston.
  • Piston cooling nozzles are usually formed by inserts attached to the engine block and communicating with a coolant supply port. The position of the nozzle is accurately determined to provide a jet of cooling fluid directed to a specific area of the bottom of the piston or to a piston gallery entrance.
  • the internal combustion engines are equipped with single nozzles each directing a jet of fluid on a piston.
  • Such a cooling system represented on the figure 1 may have two nozzles per piston; these nozzles are each formed of a tube 102, 104 connected to a feed body 106, the two tubes 102, 104 being substantially arranged one beside the other in the same plane and the free end is oriented towards the area to be cooled.
  • these two-jet nozzles comprising two tubes 102, 104 are relatively bulky and, if they can be used in heavy vehicle type vehicles or construction machines, they are not in recreational vehicles or passenger cars for which the lateral space to allow the tubes to access the piston skirt is reduced.
  • bidirectional nozzles In order to reduce the size of the cooling system capable of supplying two jets per piston, bidirectional nozzles have been developed, the nozzle comprising a single tube and two outlets in order to provide two jets of different orientations.
  • the document JP H07 317519 discloses a lubricating and cooling device of an internal combustion engine having a main body on which is mounted a set of two ducts, the ducts being in fluid communication with the main body.
  • the two tubes are made jointly and can not be separately formed.
  • each tube forms with a supply body a subassembly made separately from the other subassembly, the tubes being oriented prior to the attachment to one another of the two subassemblies.
  • the tubes are then directly oriented correctly and do not require an orientation step for example by folding the tubes after assembly. So we avoids an additional folding step of the tubes requiring the establishment of a tool between the close tubes, which would pose problems of feasibility.
  • the cooling device according to the present invention is therefore of relatively simple construction, is compact, and offers good accuracy in terms of cooling jets and cooling flow comparable to the device of the state of the art two separate tubes.
  • this cooling device with at least two tubes for cooling with one or two pistons.
  • the cooling device may comprise more than two separate tubes, the addition of cooling tubes being very simple, for example by superimposing another subset composed of a tube and a feed body.
  • the subject of the present invention is therefore a cooling device for a motor vehicle engine comprising a connection end to a cooling fluid supply system and at least first and second ends for discharging the cooling fluid to one or a plurality of zones to be cooled, said cooling device comprising at least a superimposed first and second subassembly, the first subassembly comprising a first supply body connected to the supply port and a first tube connected to the first body with the free end forming the first discharge end, the first tube extending laterally with respect to the first supply body and being shaped so as to have a desired orientation, the second subassembly comprising a second supply body connected to the supply port and a second tube connected to the second feed body whose free end forms the second discharge end, the second tube extending laterally relative to the second feed body and being shaped so as to have a desired orientation, the first and second body of supply being secured to one another in a sealed manner.
  • first and second subassemblies are joined by brazing.
  • first and second subassemblies are secured by means of a flapper screw.
  • the first supply body may include the supply port of the cooling device and the second subassembly may be adapted to be supplied with cooling fluid through the first supply body.
  • each first and second subset comprises two tubes.
  • the device may comprise means for controlling the flow of the cooling fluid.
  • the cooling device comprises means for fixing to an engine block.
  • the attachment means to an engine block are formed by a fixing plate fixed on the first supply body and adapted to be fixed on the engine block.
  • the valve screw also forms the attachment means to the engine block.
  • the device may advantageously comprise orientation means with respect to an engine block.
  • the orientation means are for example carried directly by the first supply body or by a wafer integral with the first supply body.
  • the orientation means may be formed by a pin intended to penetrate into an orifice formed in the engine block.
  • the present invention also relates to an internal combustion engine comprising a motor unit and pistons slidably mounted in said engine block, and at least one cooling device according to the invention, at least one of the tubes of said cooling device being oriented towards a piston.
  • the conformation of the first tube and the second tube so as to give them a given orientation is performed before assembling the two subassemblies.
  • the conformation of the first tube and the second tube is made by folding.
  • the step of joining the first and second subassemblies can be achieved by brazing between the supply bodies.
  • the step of joining the first and second sub-assemblies is carried out by means of a valve screw.
  • the production method may comprise an additional step of shaping the free end of at least one of the first and second tubes after step e).
  • the cooling device comprises a first subset E1 and a second subset E2 joined to one another.
  • the first subassembly E1 comprises the first tube 2 and a feed body 6.
  • the first tube 2 has a first end 2.1 by which it is fixed on the feed body 6, and a second free end 2.2 for the outlet of the jet of cooling fluid and its orientation towards the piston.
  • the feed body 6 is hollow and has a first longitudinal end 6.1 intended to be connected to a cooling fluid supply circuit of the internal combustion engine, a second longitudinal end 6.2 intended to feed the second subset E2 in cooling fluid, and a lateral orifice 8 connecting to the first end 2.1 of the first tube 2.
  • the body 6 thus ensures the circulation of the cooling fluid from the first longitudinal end 6.1 to the end 2.2 of the first tube 2 via the lateral orifice 8 and towards the second longitudinal end 6.2.
  • the second subassembly comprises the second tube 4 and a second feed body 10.
  • the second feed body 10 has a longitudinal end 10.1 connected to the second longitudinal end 6.1 of the first feed body 6.
  • the second feed body 10 also has a lateral orifice 11 to which the second tube 4 is connected by a first end 4.1.
  • the second tube 4 also has a second end 4.2 through which the jet of cooling fluid is discharged and is directed towards a piston.
  • the feed body 10 is distinct from the feed body 6 and is integral with it.
  • the feed body 10 has a connecting sleeve projecting from the first longitudinal end 10.1 of the second feed body which engages in the second longitudinal end 6.2 of the first feed body 6.
  • the first feed body 6 has the shape of a cylinder of axis X1
  • the second feed body 10 has the shape of a cylinder of axis X2.
  • the two feed bodies 6, 10 are superimposed and the two longitudinal axes X1, X2 are coaxial.
  • the tubes 2 and 4 are fixed on the supply bodies 6, 10 respectively for example by brazing.
  • each subset E1, E2 is produced separately, the first tube is secured to the first supply body 6 by its longitudinal end 2.1, for example by brazing, and the second tube 4 is secured to the second body feed 10 by its longitudinal end 4.1, for example by brazing.
  • the tubes are usually straight.
  • the tubes are deformed so as to give them a desired orientation with respect to their feed body.
  • it is only a portion of the length of the tube located at the free end of the tube which is deformed, for example by bending, to orient it in a given direction which will be that of the jet.
  • the tube is not deformed over its entire length.
  • the tubes 2, 4 are deformed before assembly and joining of the two subsets E1, E2.
  • the orientation step of the tubes is simplified since the tools can be freely arranged without being hindered by the presence of another tube.
  • the two supply bodies 6, 10 are secured to each other sealingly.
  • the two bodies are joined by brazing.
  • a fitting only may be sufficient. Indeed, for a minimum supply pressure of 15 bar, a fitting assembly can be made so as to remain tight.
  • orientation means may be provided between the two subsets E1, E2, such as an orientation counterfoil, or an orientation pin.
  • FIG 4 another embodiment of a cooling device according to the invention can be seen.
  • the second supply body 10 is fitted into the first supply body 6.
  • the fitting is sealed by means of a valve screw 12, screwed by a second longitudinal end 10.2 of the second housing body.
  • an end 12.2 of the valve screw 12 protrudes from the feed body 6 and the oil supply is through the valve screw.
  • the cooling device can be equipped with fastening means 14 to the engine block 16.
  • the fixing means 14 are, in the example shown, formed by a fixing plate provided with a mounting hole 18 in which is mounted the cooling device, more particularly the first supply body 6.
  • the plate of fixing 14 is also provided with one or more orifices 20 allowing its assembly for example by screwing on the housing of the motor 16 ( figure 10 ).
  • the plate 114 is provided with a pin 22 projecting and which is intended to cooperate with a housing provided in the engine block to ensure the orientation of the cooling device relative to the engine block.
  • the attachment of the cooling device to the engine block is done by means of the valve screw 12.
  • the plate comprises, in addition to the orientation pin, one or more fixing holes to the engine block, the screw flap not then used for fixing the cooling device on the engine block.
  • the feed bodies 106, 110 have parallelepipedal shapes, the two feed bodies 106, 110 being at least partly in contact by a plane support.
  • the supply body 106 directly comprises an orientation pin 22 for cooperating with the engine block.
  • the two bodies are assembled by means of a valve screw 12.
  • the valve screw 12 ensures the fixing of the cooling device on the engine block.
  • Other methods of assembly may be provided, such as brazing.
  • fastening means such as a fixing plate 14, may be implemented to fix the cooling device on the engine block.
  • orientation means can be provided between the two feed bodies 106, 110, such as those described in relation to the Figures 2 and 3 .
  • FIG. 5 an exemplary embodiment of a cooling system capable of producing four jets of coolant in four different directions can be seen.
  • each of the supply bodies 6, 10 comprises two lateral orifices for evacuation of the coolant discharge fluid, on which a tube 2, 2 ', 4 is fixed, 4 '.
  • each subassembly comprises two diametrically opposed tubes 2, 2 ', 4, 4' and the pairs of tubes 2, 2 ', 4, 4' are superimposed. Nevertheless one could consider that the tubes 2, 2 ', 4, 4' of each subassembly are not diametrically opposed and form between them an angle less than 180 °.
  • tubes of the two subassemblies are not contained substantially in the same vertical plane but are contained in two separate planes.
  • the cooling device of the figure 2 mounted on a motor block 16 and producing two jets oriented towards the bottom of a piston 22 of the internal combustion engine.
  • the cooling device is assembled on the engine block 16 by means of a fixing plate 14. It is then possible to realize the small space occupied by this cooling device, which makes it particularly suitable for use in an engine block of a recreational motor vehicle or a private car and any vehicle having a lateral space to access the piston skirt having reduced dimensions.
  • the cooling device may also comprise means for inhibiting the circulation of the cooling fluid as long as the pressure of the cooling fluid has not exceeded a determined threshold value.
  • these means are formed by ball or piston valves.
  • Such means are mounted for example in the first supply body, and thus control the supply of the two tubes 2, 4 simultaneously.
  • cooling devices in small spaces of motor vehicle engines while ensuring a proximity with the rotating elements.
  • cooling devices having a very small footprint, they can be put at the ready of the rotating elements that it is desired to cool.
  • it because of its process embodiment, it provides a great flexibility in the targeting angles of each of the jets and a high accuracy thereof.
  • the tubes of a cooling system can be convergent, divergent, or intersecting. In addition they can be used to cool a piston or more pistons. In addition, it can be envisaged that the cooling device comprises more than two tubes for example three, the three tubes, for example, being oriented towards the same piston.
  • the cooling device may comprise more than two subassemblies, for example three or more.
  • the second feed body then has substantially the shape of the first feed body and the third feed body to that of the second feed body of the feed device. figure 2 or that of the figure 4 depending on the assembly mode of the subsets.
  • the assembly can then be made for example by soldering between the first and second subassemblies and by means of a valve screw between the second and third subassemblies, or only by brazing between all the subassemblies or only by a flapper screw.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Fuel-Injection Apparatus (AREA)
EP14163806.4A 2013-04-11 2014-04-08 Kühlvorrichtung mit geringem Platzbedarf für Verbrennungsmotor, und Herstellungsverfahren einer solchen Vorrichtung Active EP2789824B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE14163806.4T DE14163806T1 (de) 2013-04-11 2014-04-08 Kühlvorrichtung mit geringem Platzbedarf für Verbrennungsmotor, und Herstellungsverfahren einer solchen Vorrichtung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1353293A FR3004489B1 (fr) 2013-04-11 2013-04-11 Dispositif de refroidissement pour moteur a combustion interne a encombrement reduit et procede de fabrication d'un tel dispositif

Publications (2)

Publication Number Publication Date
EP2789824A1 true EP2789824A1 (de) 2014-10-15
EP2789824B1 EP2789824B1 (de) 2017-05-10

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EP14163806.4A Active EP2789824B1 (de) 2013-04-11 2014-04-08 Kühlvorrichtung mit geringem Platzbedarf für Verbrennungsmotor, und Herstellungsverfahren einer solchen Vorrichtung

Country Status (10)

Country Link
US (1) US9476344B2 (de)
EP (1) EP2789824B1 (de)
JP (1) JP6316071B2 (de)
KR (1) KR102120925B1 (de)
CN (1) CN104100348B (de)
BR (1) BR102014008653B1 (de)
DE (1) DE14163806T1 (de)
ES (1) ES2637177T3 (de)
FR (1) FR3004489B1 (de)
IN (1) IN2014MU01294A (de)

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FR3047769A1 (fr) * 2016-02-17 2017-08-18 Bontaz Centre R & D Gicleur d'huile de fabrication simplifiee
DE102016221353A1 (de) * 2016-10-28 2018-05-03 Mahle International Gmbh Brennkraftmaschine
FR3075474A1 (fr) * 2017-12-20 2019-06-21 Valeo Systemes Thermiques Dispositif de raccordement hydraulique d'un element de refroidissement d'un dispositif d'alimentation electrique de vehicule
EP3550119A1 (de) * 2018-04-05 2019-10-09 Liebherr-Machines Bulle SA Verbrennungsmotor mit einem entlüftungssystem

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BR112015025835B1 (pt) 2013-04-11 2021-12-14 Bontaz Centre R&D Vaporizador de arrefecimento para pistão de um motor de combustão interna
GB2523393A (en) * 2014-02-24 2015-08-26 Gm Global Tech Operations Inc A valve for controlling piston cooling jets in an internal combustion engine
DE102014005364A1 (de) * 2014-04-11 2015-10-29 Mahle International Gmbh Baueinheit aus einem Kolben und einer Ölspritzdüse für einen Verbrennungsmotor
GB201519640D0 (en) * 2015-11-06 2015-12-23 Gm Global Tech Operations Inc Piston cooling jet for an internal combustion engine
DE102016219857A1 (de) 2016-10-12 2018-04-12 Bayerische Motoren Werke Aktiengesellschaft Vorrichtung zur Kühlung eines Kolbens einer Hubkolben-Brennkraftmaschine
US10704450B2 (en) * 2017-06-16 2020-07-07 Illinois Tool Works Inc. Piston cooling jet assembly
US10731540B2 (en) * 2017-11-15 2020-08-04 Illinois Tool Works Inc. Piston cooling jets
WO2019103749A1 (en) * 2017-11-27 2019-05-31 Cummins Inc. Systems and methods for controlling piston cooling nozzles using control valve actuator
CN108952922A (zh) * 2018-07-20 2018-12-07 江苏农华智慧农业科技股份有限公司 一种发动机新材料活塞冷却喷嘴结构及其生产工艺
US11248515B2 (en) * 2019-08-02 2022-02-15 Transportation Ip Holdings, Llc Piston cooling jet system
USD965029S1 (en) * 2020-09-11 2022-09-27 Transportation Ip Holdings, Llc Piston cooling jet
CN111911276A (zh) * 2020-09-15 2020-11-10 安徽江淮汽车集团股份有限公司 一种活塞冷却喷嘴
CH718247A1 (de) * 2021-01-11 2022-07-15 Liebherr Machines Bulle Sa Brennkraftmaschine mit Düsenanordnung zur Kühlung und Schmierung der Kolben-Pleuel-Baugruppe.

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR479630A (fr) * 1915-08-31 1916-04-19 Ettore Bugatti Système de refroidissement des pistons des moteurs par jets d'huile
GB136136A (en) * 1918-12-06 1920-03-25 Henry Crochat Ets Improvements in or relating to the Cooling of Pistons.
DE1216014B (de) * 1961-02-09 1966-05-05 Int Harvester Co Umlaufsystem zur Schmierung und Kolbenkuehlung von Brennkraftmaschinen
US4206726A (en) * 1977-07-18 1980-06-10 Caterpillar Tractor Co. Double orifice piston cooling nozzle for reciprocating engines
JPH07317519A (ja) 1994-05-20 1995-12-05 Unisia Jecs Corp 内燃機関における潤滑・冷却装置
EP1394376A1 (de) 2002-09-02 2004-03-03 Bontaz Centre Spritzdüse mit mehreren Strahlen für die Kühlung einer Brennkraftmaschine und Brennkraftmaschine ausgerüstet mit einer solchen Düse

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3047769A1 (fr) * 2016-02-17 2017-08-18 Bontaz Centre R & D Gicleur d'huile de fabrication simplifiee
WO2017140817A1 (fr) * 2016-02-17 2017-08-24 Bontaz Centre R & D Gicleur d'huile de fabrication simplifiee
US10774700B2 (en) 2016-02-17 2020-09-15 Bontaz Centre R & D Lubricating nozzle with simplified production
DE102016221353A1 (de) * 2016-10-28 2018-05-03 Mahle International Gmbh Brennkraftmaschine
FR3075474A1 (fr) * 2017-12-20 2019-06-21 Valeo Systemes Thermiques Dispositif de raccordement hydraulique d'un element de refroidissement d'un dispositif d'alimentation electrique de vehicule
WO2019122742A1 (fr) * 2017-12-20 2019-06-27 Valeo Systemes Thermiques Dispositif de raccordement hydraulique d'un element de refroidissement d'un dispositif d'alimentation electrique de vehicule
EP3550119A1 (de) * 2018-04-05 2019-10-09 Liebherr-Machines Bulle SA Verbrennungsmotor mit einem entlüftungssystem

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JP6316071B2 (ja) 2018-04-25
ES2637177T3 (es) 2017-10-11
BR102014008653A2 (pt) 2016-08-09
IN2014MU01294A (de) 2015-09-04
EP2789824B1 (de) 2017-05-10
US20140305392A1 (en) 2014-10-16
JP2014206165A (ja) 2014-10-30
CN104100348B (zh) 2018-12-21
US9476344B2 (en) 2016-10-25
KR102120925B1 (ko) 2020-06-09
KR20140123020A (ko) 2014-10-21
BR102014008653B1 (pt) 2022-06-14
FR3004489B1 (fr) 2017-04-28
FR3004489A1 (fr) 2014-10-17
DE14163806T1 (de) 2014-12-31
CN104100348A (zh) 2014-10-15

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