EP1859129B1 - Dispositif de circulation d'huile pour moteur a combustion interne - Google Patents

Dispositif de circulation d'huile pour moteur a combustion interne Download PDF

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Publication number
EP1859129B1
EP1859129B1 EP06709517A EP06709517A EP1859129B1 EP 1859129 B1 EP1859129 B1 EP 1859129B1 EP 06709517 A EP06709517 A EP 06709517A EP 06709517 A EP06709517 A EP 06709517A EP 1859129 B1 EP1859129 B1 EP 1859129B1
Authority
EP
European Patent Office
Prior art keywords
oil
insert
canula
independent
separator
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.)
Active
Application number
EP06709517A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1859129A1 (fr
Inventor
Steeve Fontaine
Dominique Boulbin
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.)
Renault SAS
Original Assignee
Renault SAS
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Filing date
Publication date
Application filed by Renault SAS filed Critical Renault SAS
Publication of EP1859129A1 publication Critical patent/EP1859129A1/fr
Application granted granted Critical
Publication of EP1859129B1 publication Critical patent/EP1859129B1/fr
Active legal-status Critical Current
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Classifications

    • 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
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
    • 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
    • F01M1/12—Closed-circuit lubricating systems not provided for in groups F01M1/02 - F01M1/10
    • 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
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • 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
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
    • F01M2013/0488—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with oil trap in the return conduit to the crankcase

Definitions

  • the present invention relates, in general, to a device for preventing a rise of oil in an oil outlet formed in an oil separator / decanter of an internal combustion engine.
  • the invention relates to an oil circulation device for an internal combustion engine comprising a separator / decanter adapted to extract oil contained in an oil / gas mixture, a cylinder block in which at least one chamber is formed.
  • the apparatus further comprising a pressurized oil supply line adapted to convey oil under pressure to moving parts of said engine and a siphon oil return circuit, the oil return circuit; comprising at least one cannula whose upper end opens into an oil outlet of said separator / decanter to collect decanted oil and a lower end of which dips into an oil reservoir having an opening opening freely in a plane between said upper and lower ends of the cannula.
  • Ventilation gases consisting of an air-oil mixture usually pass through an oil separator / decanter to avoid a risk of rejection of air containing oil particles.
  • the oil settles on a settling surface formed in the separator / settler by a series of baffles allowing the mixture to gravity track a relatively large path along which air and oil separate.
  • the oil thus extracted and decanted leaves the decanter by an oil outlet.
  • siphons are used.
  • the purpose of the present invention is to optimize the manufacture of such an oil circulation device in the case of engines having a pipe for supplying oil under pressure.
  • the oil circulation device of the invention is essentially characterized in that said reservoir is made in an insert inserted in a sealed manner into a passageway formed through a wall of said pressurized oil supply line, the insert simultaneously constituting a closure plug of said oil supply line and an oil tank.
  • said pressurized oil supply line is used as a support for the oil reservoir which avoids having to position a support specifically dedicated to the maintenance of the reservoir and which also allows a saving of space in total height of the engine since the oil tank is partly positioned in the thickness of the wall of said oil supply line.
  • the existing difference between the threshold of the settling surface of the separator / decanter and the lower threshold of the siphon allows a pressure compensation in order to avoid the rise of a mixture of oil gas at the outlet of the decanter. Thanks to the invention, this height can be increased while reducing the height of the engine.
  • the length of the cannula which fixes the difference in level will be chosen according to the differential pressure existing between the outlet of the separator / decanter and the chamber into which the decanted oil is poured (generally inside the housing, and above the parts in motion to lubricate (for example in the crankcase).
  • the pressurized oil supply line is produced by molding, which is almost always the case, it is then necessary to have an opening in this supply line for allow the positioning and removal of a molding core (usually core defining the internal forms of the pipe). Usually, after removal of the molding core, this hole is plugged, using an insert / plug. Thanks to the invention the oil reservoir is formed in the cap of the high pressure pipe, thus saving a part and reduce the number of machining operations.
  • a portion of said pressurized oil supply line may form an integral part of said cylinder block and for the passage in which the insert is positioned to be formed in this portion and thus to be part of the cylinder block.
  • the invention is applied to a cylinder block comprising a pressurized oil supply line.
  • This embodiment can be applied to a large number of engines including Vee engines as in the example of Figures 1 to 3 described below.
  • said insert is crimped into the passage formed through the wall of said supply pipe.
  • the insert has the shape of a cylindrical bowl and that the lower end of the cannula is positioned in a lower zone of said bowl.
  • the cannula prefferably has a cylindrical tube shape and be coaxial with the cylindrical cup shaped insert.
  • a first height H1 defined by the minimum distance separating the lower end of the cannula from said opening of the oil reservoir, is less than half a second height H2 defined by the distance separating said lower and upper ends of the cannula.
  • This dimensional characteristic is advantageous for setting the pressure that can be compensated by the device of the invention.
  • the first height H1 is greater than a quarter of the second height H2.
  • the opening opening of said oil reservoir has a section greater than a cross section of oil passage in the cannula.
  • the device is adapted to be implanted in a multi-cylinder engine and that it comprises several independent cannulas and several independent oil reservoirs and in that the separator / decanter has several outlets. decanted oil, each independent cannula being connected to an independent oil outlet of said separator / settler and immersed in an independent oil reservoir, and in that each independent oil reservoir is an independent insert inserted into a corresponding passage formed through the wall said pressurized oil supply line, each independent insert thus simultaneously constituting a plug for closing said oil supply line and an oil tank.
  • the invention relates to an oil circulation device 1 integrated in an internal combustion engine which is here a Vee engine.
  • the Vee engine of the figure 1 has two rows of combustion chambers, distributed on either side of an axis AA. Each row of combustion chamber has 3 chambers positioned in the same plane.
  • a decanter 3 is positioned in the plane of symmetry of the engine and above an axis XX which is the axis of rotation of the crankshaft.
  • the location of the crankshaft 17 is arranged below the decanter / separator so that the oil is decanted and The split is flown over the crankshaft and back into the hull tray of the lower crankcase.
  • the figure 2 is a sectional view in a plane of the engine comprising the axis AA and the axis of rotation of the crankshaft XX.
  • Three cylinders 5 are partially visible and are the locations in which the pistons must be inserted. These cylinders are formed in the crankcase which is a self-contained molded part.
  • a pressurized oil supply line 6 is disposed in the cylinder block, between the separator / decanter 3 and the location 17 reserved for the crankshaft. This pipe 6 is adapted to be connected to an oil pump and has an oil outlet under pressure directed towards the location 17.
  • This pipe 6 is part of the cylinder block 4 which is a one-piece piece made by molding.
  • a deoiling zone 18 is formed in the crankcase above the pressurized oil supply line 6 and below the separator / settler.
  • the fact that the pressurized oil supply line is interposed between the separator / decanter and the location reserved for the crankshaft 17 makes it possible to protect the de-oiling zone from the direct oil projections coming from the crankshaft, which enables the oil transiting the de-oiling zone to flow on the pressurized oil supply line.
  • the pressurized oil supply pipe has an enlarged outer shape forming a deflector 19.
  • This deflector has oil flow zones adapted to drive, by gravity, the oil flowing from the deoiling zone 18. on the deflector 19 of the pipe 6, to local perforations 20 of the deflector 19.
  • the separator / decanter 3 is a chamber having an inlet opening into the de-oiling zone 18 to collect an oil / gas mixture to be separated.
  • the interior of the separator / settler 3 is formed of a multitude of baffles created so that the oil / gas mixture passes through a long path zigzagging from one baffle to the other. Thus the oil which comes into contact with a baffle falls by gravity to the separator / decanter and deoiled gases can be discharged to the outside of the engine.
  • the oil extracted from the oil / gas mixture is discharged from the separator / decanter 3 through an oil outlet 10 of the separator / decanter feeding an oil return circuit 7.
  • the oil return circuit forms a siphon to prevent the oil / gas mixture from entering the exchanger separator via its outlet 10.
  • This oil return circuit 7 comprises a cannula 8 whose upper end 9 is connected to the oil outlet of said separator / exchanger 3 and a lower end 11 of which is immersed in a reservoir 12.
  • This reservoir 12 is formed by an insert 14 in the form of bowl whose upper part of the bowl is open towards the inside of the cylinder block, in the de-oiling zone 18.
  • the opening of the bowl is in a plane P and in the form of a peripheral disk to the cannula, this disc being in the plane P and placed at a distance H1 from the lower end of the cannula.
  • the bottom of the cuvette is inserted into a passage formed through the wall 15 of the oil supply circuit and thus forms a plug of the pressurized oil supply line.
  • the second end of the cannula is located closer to the bottom of the cup-shaped insert than the upper edges of this bowl.
  • this bowl delimit said opening of the reservoir, the section of this opening being reduced by the section occupied by the assembly of the cannula.
  • the upper edges of the cup-shaped insert are in a horizontal plane allowing a flow of oil over the entire periphery of the bowl when the latter overflows.
  • a hole or passage formed through the wall 15 of the oil supply line to allow the machining of internal shapes to the pipe also allows to receive an insert once the inside of the pipe 6 machined.
  • the length of the cannula needed to prevent the rise of an oil / gas mixture is important without having to increase the height of the engine.
  • the back pressure inside the de-oiling zone can therefore be greater if necessary, without there being a need for an increase in engine height and without there being any risk of pollution of the engine. de-oiler by raising the oil / gas mixture.
  • the figure 3 represents a detailed view of a portion of the figure 2 .
  • a first height H1 determines the length of the canula portion 8 which is dipped in the oil reservoir 12 (distance between the lower end 11 of the cannula and the top of the tank).
  • a second height H2 determines the length of the cannula (distance between the ends of the cannula). The greater the difference in height between H1 and H2, the greater the back pressure in the de-oiling zone likely to produce a rise in the oil / gas mixture in the separator / settler.
  • the height H1 must be sufficient so that the volume of oil located above the lower end of the cannula and contained in the container can fill a determined cannula height as a function of the maximum permissible backpressure by the motor (the back pressure is the pressure difference between the pressure inside the decanter, at its outlet 10 and the pressure inside the deoiling zone 18).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Compressor (AREA)
  • Transformer Cooling (AREA)
EP06709517A 2005-03-07 2006-02-15 Dispositif de circulation d'huile pour moteur a combustion interne Active EP1859129B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0502267A FR2882783B1 (fr) 2005-03-07 2005-03-07 Dispositif de circulation d'huile pour moteur a combustion interne
PCT/FR2006/050138 WO2006095104A1 (fr) 2005-03-07 2006-02-15 Dispositif de circulation d'huile pour moteur a combustion interne

Publications (2)

Publication Number Publication Date
EP1859129A1 EP1859129A1 (fr) 2007-11-28
EP1859129B1 true EP1859129B1 (fr) 2012-05-02

Family

ID=35597126

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06709517A Active EP1859129B1 (fr) 2005-03-07 2006-02-15 Dispositif de circulation d'huile pour moteur a combustion interne

Country Status (8)

Country Link
US (1) US8015966B2 (ja)
EP (1) EP1859129B1 (ja)
JP (1) JP4881942B2 (ja)
KR (1) KR20070116073A (ja)
CN (1) CN100529338C (ja)
AT (1) ATE556201T1 (ja)
FR (1) FR2882783B1 (ja)
WO (1) WO2006095104A1 (ja)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008022818A1 (de) * 2008-05-08 2009-11-12 Hengst Gmbh & Co.Kg Ölabscheider mit Siphon
FR2948967B1 (fr) * 2009-08-07 2011-08-26 Peugeot Citroen Automobiles Sa Architecture de traitement des gaz de carter dans un moteur a combustion interne d'un vehicule automobile.
CN103446909B (zh) * 2013-01-01 2015-09-16 许照慧 医用锥体搅拌罐
US9080478B2 (en) * 2013-01-21 2015-07-14 Ford Global Technologies, Llc Oil separator
CN103982321B (zh) * 2014-05-30 2016-06-08 安徽江淮汽车股份有限公司 发动机缸盖护罩及发动机总成
DE102016201414B4 (de) * 2016-01-29 2017-10-05 Ford Global Technologies, Llc Brennkraftmaschine mit Ölkreislauf
CN108518292A (zh) * 2018-06-04 2018-09-11 沈阳航天新光集团有限公司 一种具有清洁排污功能油箱
DE102019004377A1 (de) * 2019-06-19 2020-12-24 Deutz Aktiengesellschaft Ölrücklaufventil für ein Kurbelgehäuseentlüftungssystem

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2642052A (en) * 1952-10-25 1953-06-16 Caterpillar Tractor Co Engine crankcase breather and oil separator
JPS5143345Y2 (ja) * 1971-02-17 1976-10-21
JPS6055714A (ja) * 1983-09-06 1985-04-01 Matsushita Electric Ind Co Ltd 搬送波阻止フィルタ
JPS6055714U (ja) * 1983-09-24 1985-04-18 トヨタ自動車株式会社 ブロ−バイガス通路構造
FR2674446B1 (fr) * 1991-03-29 1993-07-09 Pall France Services Dispositif de filtration et de communication entre l'atmosphere et l'interieur d'un carter.
DE19508967C2 (de) * 1995-03-13 1997-04-03 Daimler Benz Ag Entlüftungsvorrichtung für das Kurbelgehäuse einer Brennkraftmaschine
JPH08260936A (ja) * 1995-03-27 1996-10-08 Kubota Corp エンジンのブリーザ装置
DE19608066C1 (de) * 1996-03-02 1997-06-05 Daimler Benz Ag Kurbelraumentlüftung für eine Brennkraftmaschine
DE19703771C1 (de) * 1997-02-01 1998-06-25 Daimler Benz Ag Entlüftungsvorrichtung für ein Kurbelgehäuse einer Brennkraftmaschine
FR2819291B1 (fr) 2001-01-11 2003-03-14 Renault Dispositif de retour d'huile formant siphon pour moteur a combustion interne
JP4454193B2 (ja) * 2001-08-16 2010-04-21 ヤンマー株式会社 エンジンの油戻し装置
JP3916433B2 (ja) * 2001-10-19 2007-05-16 本田技研工業株式会社 ブリーザ装置
US7080636B2 (en) * 2003-05-05 2006-07-25 Dichtungstechnik G. Bruss Gmbh & Co. Kg Oil separating device for a combustion engine

Also Published As

Publication number Publication date
ATE556201T1 (de) 2012-05-15
FR2882783A1 (fr) 2006-09-08
FR2882783B1 (fr) 2007-05-11
US8015966B2 (en) 2011-09-13
EP1859129A1 (fr) 2007-11-28
WO2006095104A1 (fr) 2006-09-14
KR20070116073A (ko) 2007-12-06
CN100529338C (zh) 2009-08-19
US20090211851A1 (en) 2009-08-27
JP4881942B2 (ja) 2012-02-22
CN101137823A (zh) 2008-03-05
JP2008531925A (ja) 2008-08-14

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