EP2260188A2 - Vorrichtung mit erhöhter effizienz zur rückgewinnung von öl aus verbrennungsgasen - Google Patents
Vorrichtung mit erhöhter effizienz zur rückgewinnung von öl aus verbrennungsgasenInfo
- Publication number
- EP2260188A2 EP2260188A2 EP09722129A EP09722129A EP2260188A2 EP 2260188 A2 EP2260188 A2 EP 2260188A2 EP 09722129 A EP09722129 A EP 09722129A EP 09722129 A EP09722129 A EP 09722129A EP 2260188 A2 EP2260188 A2 EP 2260188A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- cylinder
- engine
- oil
- recovering
- combustion gases
- 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
- 239000000567 combustion gas Substances 0.000 title claims abstract description 24
- 239000007789 gas Substances 0.000 claims abstract description 85
- 238000011084 recovery Methods 0.000 claims abstract description 31
- 238000005192 partition Methods 0.000 claims abstract description 7
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 239000000446 fuel Substances 0.000 claims 1
- 239000003921 oil Substances 0.000 description 76
- 238000000926 separation method Methods 0.000 description 11
- 230000005484 gravity Effects 0.000 description 5
- 239000010705 motor oil Substances 0.000 description 3
- 230000005465 channeling Effects 0.000 description 2
- 241001631457 Cannula Species 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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
- F01M13/02—Crankcase ventilating or breathing by means of additional source of positive or negative pressure
- F01M13/021—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure
- F01M13/022—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure using engine inlet suction
-
- 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
- F01M13/0416—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil arranged in valve-covers
-
- 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
- F01M2013/0433—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with a deflection device, e.g. screen
-
- 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 to a device for recovering the oil contained in the combustion gases having an improved efficiency, and to an internal combustion engine comprising such a device.
- combustion gas leaks also called Blow-by gas .
- the Blow-by gases separated from this oil are returned to the engine intake.
- the extraction of oil from the Blow-by gases is obtained by means of a separation device, also called settling tank and generally disposed on the cylinder head cover.
- This separation device is formed, for example of one or two chambers having baffles in which flow the gas Blow-by, the drops of oil transported by the gas impact the walls component baffles. These drops then flow by gravity along these walls and are harvested and returned to the oil circuit.
- This device may comprise a first chamber in which a first oil recovery is performed, then a second larger chamber in which a second recovery is performed.
- the doubling of the chambers makes it possible to achieve a better separation efficiency.
- the drops of oil are entrained in the separation and recovery device by the Blow-by gases or are projected into the device, for example because of the bubbling of the cam shaft in the oil.
- Such a device is for example known from GB2441404.
- This document indeed describes a device for separating and recovering the Blow-by gas oil in which the Blow-by gases are conveyed into a chamber communicating in its upper part, via baffles, with on the one hand, a blow-by gas outlet opening open in the upper wall of this chamber and, on the other hand, with an oil recovery channel contained in these gases extending vertically in the center of this chamber.
- the known devices give overall satisfaction. However, due to the reduction of the space dedicated to the engine compartment and the engine itself of motor vehicles, to enlarge the cabin and / or add new systems, including safety, in the engine compartment, these devices occupy also a space more and more reduced.
- the Blow-by gas collection section formed by the intersection of the engine and the recovery device, is then reduced with respect to their flow rate.
- the velocity of the gases is then very important in the recovery device, in particular in the first chamber, which has the consequence, when the drops recovered in this first chamber fall by gravity, to re-train these drops by the gas Blow-by.
- These drops are then divided into fine droplets when they hit the walls of the first chamber. However, these fine droplets are difficult to separate from the Blow-by gases.
- an oil recovery device contained in the Blow-By gases comprising a first and a second recovery chamber, the first chamber comprising means for recovering the oil ensuring a first separation. between oil and gas Blow-by.
- the recovered oil is advantageously reinjected into the engine oil circuit upstream of the first chamber.
- the recovered oil is at least mostly returned to the engine oil circuit without being re-entrained by the Blow-by gases.
- the main subject of the present invention is therefore a device for recovering the oil contained in the combustion gases leaving the engine and going to the engine air inlet comprising at least one inlet gas collection orifice, flow of said incoming gases, an outlet of said combustion gases at least partly discharged from the oil, a wall closing said inlet gas flow channel, an oil recovery channel settling on said wall, a separating partition of said recovery channel and of the inlet gas flow channel, wherein the inlet gas flow channel is delimited by a first cylinder, the oil recovery channel being delimited by the first cylinder and a second cylinder surrounding the first cylinder, the partition wall being formed by the first cylinder, the wall forming a bottom of the second cylinder, and a passage being defined between the first cylinder; said bottom and an end of the first cylinder
- the wall is advantageously concave and connects continuously to at least a portion of the second cylinder, which ensures a good flow of oil drops.
- the recovery device may comprise a gutter bordering the gas collection orifice, extending radially outwardly of the first cylinder, a passage being provided between an end of the second cylinder opposite the bottom.
- the gutter may, in an alternative embodiment, include drain holes for harvested oil, the drain holes allowing the oil to return to the engine upstream of the gas collection port.
- This channel is advantageously capable of containing a volume of oil sufficient to force the combustion gases to pass through this volume, this passage ensuring additional recovery of the oil.
- the first and second cylinders may be surrounded by a third cylinder forming an outer wall of a first chamber, said third cylinder being connected to the first cylinder to form the gutter, said device also comprising a second chamber connected to the flow channel of the gas entering through the oil collection channel and the gutter, said main chamber having baffles for the combustion gases and is connected to an engine inlet.
- the device comprises three first chambers connected in parallel to a single main chamber.
- the device advantageously comprises two parts made of plastic material by molding, the first part comprising the first and the third cylinder, a lower bottom of a connecting pipe between the first tank and the main tank, and a lower bottom of the main tank, and a second part comprising the second cylinder, an upper bottom of the connecting pipe, an upper bottom and the baffles of the main reservoir, sealing means being interposed between the two parts.
- the present invention also relates to an internal combustion engine comprising a device for recovering the oil contained in the combustion gases leaving the engine and going to the engine air intake according to the present invention, fixed on a cover a cylinder head in leaktight manner, said device being connected to the engine so as to collect the combustion gases leaving the engine and returning the collected oil to said gases, and in such a way as to reinject said gases at the outlet of said device at the inlet of said engine .
- FIGS. 1A and 1B are plan and perspective top views, respectively, of an exemplary embodiment of a recovery device according to the present invention as a whole,
- FIGS. 2A and 2B are perspective bottom and plan views respectively of the recovery device of FIGS. 1A and 1B;
- FIG. 3 is a view from below identical to that of FIG. 2B, the lower part of FIG. second chamber having been withdrawn,
- FIG. 4 is a sectional view along a plane AA of the device of FIG. 3 according to the present invention partially shown, - Figure 5 is an enlarged view of Figure 4, the device being in operation.
- FIGS. 4 and 5 show a sectional view of an exemplary embodiment of a recovery device according to the present invention comprising a first oil separation / recovery chamber 2 and a second separation chamber / recovery 4 of the oil also designated master bedroom.
- the recovery device according to the present invention is disposed on a cylinder head cover 8 and comprises at least one opening 6 for capturing the Blow-by gases leaking at the segments.
- This orifice 6 forms the inlet of the device according to the present invention.
- the device comprises three gas collection ports 6, 106, 206 arranged in parallel and ensuring the collection of gases all along the cylinder cover 8.
- Each orifice 6, 106, 206 is connected to a first chamber 2 , 102, 202 separate from those of the other orifices, the first three chambers 2, 102, 202 being of similar embodiment, we will describe only one in detail.
- the first chamber 2 comprises a first duct 10 for channeling the incoming Blow-by gases, a wall 12 opposite to the collection orifice 6 in the direction of flow of the gases on which the gases are impacted, in particular the drops of oil which is deposited, at least in part, on this wall, and a second conduit 14 for channeling the oil settling on the wall 12 while isolating it from the inflow of gases.
- the first duct is delimited by an inner face of a first cylinder 16 disposed the most inside the device, this first cylinder extending from the collecting orifice 6 in the direction of the impact wall 12
- the second duct 14 is delimited by an outer face of the first cylinder 16 and an inner face of a second cylinder 18 surrounding the first cylinder, the second cylinder extending from the impact wall 12 forming with it a surface substantially continuous towards the capture port.
- a third cylinder 19 is provided outside the second cylinder, surrounding it, forming the outer wall of the first chamber 2.
- the arrows 20 indicate the path of the gases in the device.
- the gases discharged at least partially from the oil join the main chamber 4 by a connecting pipe 22, previously borrowing a baffle 24 defined by the first 16, the second 18 and the third 19 cylinder.
- the impact wall advantageously forms a half-vault thus ensuring a gravity flow outwardly the inner face of the second cylinder 18 and advantageously prevents drop drop vertically in the flow of the incoming gas.
- a horizontal wall, or a complete arch-shaped wall is not outside the scope of the present invention, the vertical drop of oil drops directly in the incoming flow being reduced compared to the devices of the state of the invention. the technique.
- the impact wall advantageously has a concave shape connecting with at least a portion of the second cylinder 18 so as to form a continuous surface promoting the flow of drops along this surface.
- the cylinders can have any section.
- the cylinders have a substantially rectangular section.
- the three cylinders are advantageously chosen so as to have homothetic sections in order to ensure a uniform collection of oil and gases in the direction of the main chamber 4.
- the first and third cylinders meet at their lower ends to form a gutter 26, in which the harvested oil is stored.
- the channel 26 has holes 28 to allow the evacuation of the oil towards the engine. These holes 28 line the passage of Blow-by gas flow, thus avoiding the harvested oil to be directly re-entrained by the Blow-by gases.
- a volume of oil can be stored in the trough 26, while the Blow-by gases during their evacuation towards the main chamber pass through this volume of oil. oil. During this passage, oil still contained in the gas is captured.
- the oil thus decanted in this first chamber will pass into the main body of the decanter in the form of streams or oil packets.
- the oil in this form is now properly treated by a conventional baffled decanter.
- the right side of the inner cylinder is lower than that of the left side.
- the Blow-by gases then tend to start from the side of the lowest cylinder, since it is the one that has the least pressure loss.
- the oil recovered, because of the inclination of the vault, will tend to flow to the side where the side of the cylinder is the highest. Thanks to this construction, the risk of bringing the oil into contact with the Blow-by gases is reduced, and therefore also the risk of driving the already separated oil.
- Blow-by gases then strike the half-vault 12, the oil is then deposited on this half-vault in the form of drops.
- the drops then flow by gravity along the half-vault 12, then on the inner face of the second cylinder 18 and join the gutter 26.
- This oil is then returned to the engine through the drain holes 28. Blow-by gases partially discharged from the oil also pass between the first 16 and the second 18 cylinder, borrowing the chicane formed by the gutter 26.
- the gases then borrow the passage delimited between the second 18 and the third 19 cylinder, then the connecting conduit 22 and join the main chamber 4.
- the gases take a series of baffles 23, allowing to unload even more the gases of the remaining oil they carry.
- the oil recovery device comprises three first chambers 2, 102, 202 in parallel disposed on the cylinder head cover all along thereof. This number is in no way limiting and can be modified according to the characteristics of the engine.
- first three chambers 2, 102, 202 are connected to a single main chamber 4 by a connecting pipe 22, 122, 222 respectively, which can be seen inside in FIG. 3, in particular the multitude of baffles 23 for harvesting. the remaining oil.
- This main tank 4 comprises an outlet port 30 of Blow-by gases discharged from all or part of the oil provided in an upper part of the tank.
- this orifice 30 comprises a nozzle 32 intended to be connected to the engine inlet, the gases being burned therein, and oil outlet orifices 34 collected at the end of cannulas 36 passing through the cylinder head cover and the bolt, to send it back into the engine.
- the oil recovery device is for example made of plastic material, preferably by molding. For this, it is planned to make the device in two parts, a lower part 38 comprising the first 16 and the third 19 cylinder, the bottom bottom of the connecting pipe 22, and the bottom bottom of the main tank 4, and a second part comprising the second cylinder, the upper bottom of the connecting pipe, the upper bottom and the baffles 23 of the main tank 4.
- seals 42 are interposed between the first 38 and the second part 40. Seals 44 are also provided between the recovery device and the cylinder head cover, in particular between the bottom of the channel 26 and the cylinder head cover. For example, a groove 46 surrounding the inlet of the gas Blow-by in the first tank 1 is provided in the bottom of the channel 26 outside thereof.
- the first and second parts are secured, for example by melting the plastic material or by snapping.
- the embodiment by molding reduces the production costs of the device.
- the device can be made for example of polyamide, polypropylene with or without glass fibers.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0851606A FR2928684A1 (fr) | 2008-03-12 | 2008-03-12 | Dispositif de recuperation de l'huile contenue dans les gaz de combustion a efficacite amelioree |
PCT/FR2009/000250 WO2009115710A2 (fr) | 2008-03-12 | 2009-03-11 | Dispositif de récupération de l'huile contenue dans les gaz de combustion a efficacité améliorée |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2260188A2 true EP2260188A2 (de) | 2010-12-15 |
EP2260188B1 EP2260188B1 (de) | 2011-09-28 |
Family
ID=39942963
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09722129A Active EP2260188B1 (de) | 2008-03-12 | 2009-03-11 | Vorrichtung mit erhöhter effizienz zur rückgewinnung von öl aus verbrennungsgasen |
Country Status (9)
Country | Link |
---|---|
US (1) | US20100313861A1 (de) |
EP (1) | EP2260188B1 (de) |
JP (1) | JP2011513647A (de) |
CN (1) | CN101970815A (de) |
AT (1) | ATE526493T1 (de) |
ES (1) | ES2372910T3 (de) |
FR (1) | FR2928684A1 (de) |
RU (1) | RU2010141756A (de) |
WO (1) | WO2009115710A2 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3674522A1 (de) * | 2018-12-31 | 2020-07-01 | Kubota Corporation | Motor |
FR3134523A1 (fr) * | 2022-04-15 | 2023-10-20 | Tallano Technologie | Dispositif de captation de particules liquides dans un flux gazeux |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29908116U1 (de) * | 1999-05-06 | 2000-09-28 | Hengst Walter Gmbh & Co Kg | Ölabscheider zur Entölung von Kurbelgehäuse-Entlüftungsgasen einer Brennkraftmaschine |
SE522473C2 (sv) * | 2002-06-20 | 2004-02-10 | Alfa Laval Corp Ab | Ett sätt och en anordning för rening av vevhusgas |
JP4249504B2 (ja) * | 2003-02-17 | 2009-04-02 | マツダ株式会社 | オイルセパレータ構造及びオイルセパレータユニット |
US7080636B2 (en) * | 2003-05-05 | 2006-07-25 | Dichtungstechnik G. Bruss Gmbh & Co. Kg | Oil separating device for a combustion engine |
US7059311B2 (en) * | 2004-08-12 | 2006-06-13 | Shiloh Industries, Inc. | Air/oil separating device |
DE102006030107A1 (de) * | 2005-06-30 | 2007-02-08 | Mann + Hummel Gmbh | Dichtung |
GB0617071D0 (en) * | 2006-08-30 | 2006-10-11 | Perkins Engines Co Ltd | Baffle arrangement |
DE102006041213B4 (de) * | 2006-09-02 | 2017-06-29 | Mahle International Gmbh | Einrichtung zur Kurbelraumentlüftung |
DE102008058962A1 (de) * | 2008-11-25 | 2010-05-27 | Hengst Gmbh & Co.Kg | Kurbelgehäuseentlüftungseinrichtung einer Brennkraftmaschine |
-
2008
- 2008-03-12 FR FR0851606A patent/FR2928684A1/fr not_active Withdrawn
-
2009
- 2009-03-11 WO PCT/FR2009/000250 patent/WO2009115710A2/fr active Application Filing
- 2009-03-11 US US12/867,504 patent/US20100313861A1/en not_active Abandoned
- 2009-03-11 RU RU2010141756/06A patent/RU2010141756A/ru not_active Application Discontinuation
- 2009-03-11 AT AT09722129T patent/ATE526493T1/de not_active IP Right Cessation
- 2009-03-11 ES ES09722129T patent/ES2372910T3/es active Active
- 2009-03-11 CN CN2009801083935A patent/CN101970815A/zh active Pending
- 2009-03-11 EP EP09722129A patent/EP2260188B1/de active Active
- 2009-03-11 JP JP2010550230A patent/JP2011513647A/ja not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO2009115710A2 * |
Also Published As
Publication number | Publication date |
---|---|
FR2928684A1 (fr) | 2009-09-18 |
EP2260188B1 (de) | 2011-09-28 |
ATE526493T1 (de) | 2011-10-15 |
ES2372910T3 (es) | 2012-01-27 |
JP2011513647A (ja) | 2011-04-28 |
WO2009115710A3 (fr) | 2010-01-14 |
US20100313861A1 (en) | 2010-12-16 |
CN101970815A (zh) | 2011-02-09 |
RU2010141756A (ru) | 2012-04-20 |
WO2009115710A2 (fr) | 2009-09-24 |
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