EP2786007A1 - Vanne pour un circuit de circulation de gaz dans un véhicule - Google Patents
Vanne pour un circuit de circulation de gaz dans un véhiculeInfo
- Publication number
- EP2786007A1 EP2786007A1 EP12816689.9A EP12816689A EP2786007A1 EP 2786007 A1 EP2786007 A1 EP 2786007A1 EP 12816689 A EP12816689 A EP 12816689A EP 2786007 A1 EP2786007 A1 EP 2786007A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- flap
- main body
- outlet
- gas
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D41/0047—Controlling exhaust gas recirculation [EGR]
- F02D41/0077—Control of the EGR valve or actuator, e.g. duty cycle, closed loop control of position
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
- F02M26/23—Layout, e.g. schematics
- F02M26/25—Layout, e.g. schematics with coolers having bypasses
- F02M26/26—Layout, e.g. schematics with coolers having bypasses characterised by details of the bypass valve
-
- 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
- Y10T137/00—Fluid handling
- Y10T137/6416—With heating or cooling of the system
- Y10T137/6579—Circulating fluid in heat exchange relationship
Definitions
- the invention relates to a control valve for a flow of gas flowing in a gas circuit of a motor vehicle.
- motor vehicles operating with a heat engine implement a gas circuit for supplying said engine during certain phases of use of the vehicle.
- a gas circuit has an external air inlet to the vehicle, and includes an air supply circuit located in the air and an exhaust system located therein. downstream of said engine to evacuate the flue gases.
- EGR loop Exhaust Gas Recirculation
- a portion of the flue gases for reinjecting them into the supply circuit
- the engine gas supply is provided by a mixture of incident fresh air and burnt gas.
- the flow rate of the gases in these EGR loops is regulated by means of a valve coupled to a cooler, for cooling said gases during certain temporary and specific phases of use of the engine.
- These valves therefore comprise a gas inlet and two gas outlets.
- a first outlet is provided for directly conveying the burnt gases to the supply circuit located upstream of the engine, and a second outlet is designed to previously direct said burnt gases to the cooler to cool beforehand before they arrive. in said supply circuit.
- valves are equipped with a rotary shutter, pivotable between a first position for which it closes the second outlet and causes the passage of gas to the first outlet, and a second position for which it closes the first outlet and causes the passage gases to the second exit.
- the rotation of the shutter is controlled and is performed automatically from a central computing unit that sends a suitable electrical signal at the appropriate time.
- the current valves have a flap dimensioned in a somewhat limited way so that it can pivot easily in the valve, so that the flap leaves gaps of passage of the gas at the level of the duct that is supposed to close, said interstices being rather localized around this component. This results in an approximate and poorly controlled operation of the EGR loops, which may affect the operation of the gas supply flow of the engine.
- valves according to the invention implement a flap associated with a particular internal structure of said valve, said flap and said interacting structure to ensure a perfect seal of the flap in at least one of its closed positions.
- the opening and closing phases of the valve are clean, without leaving any fraction of residual gas, thus making the gas supply circuit perfectly reliable and fully effective.
- the invention relates to a valve for regulating a gas flow in an EG R loop of a gas supply stream of a vehicle engine, comprising a gas inlet, a first outlet of gas for directly conveying the gases in the supply circuit, and a second gas outlet for passing said gases through a duct passing through a cooler before injecting them into said supply circuit, said valve having a rotary flap adapted to pivoting between a first position for which it closes the second output while opening the first output, and u second position so that it closes the first output while opening the second output.
- the flap comprises a planar main body adapted to open or close the cond u it, the internal structure of the valve having a flat flange, so that the main body of the shutter comes into contact year against led it rim when led it flap is found in its second position.
- the shutter of the valve according to the invention makes it possible to open and exit the other outlet simultaneously, and vice versa.
- the valve according to the invention has thus undergone a dual arrangement, at the level of both the duct and the shutter, so that the main body of the shutter comes into plane contact with the duct, to ensure sealed opening of the second outlet, without loss of gas to the first outlet.
- the valve can flow cleanly and thus without loss, exhaust gases to the cooler of the EGR loop, before sending them into the main gas supply circuit of the engine.
- the duct forms a loop with an inlet extending the second outlet of the valve and an outlet opening at the first outlet of said valve
- the flap may have a secondary secondary body in continuity with the main body, said shutter being positioned in the valve so that it can pivot about an axis of rotation between the main body and the secondary body, the secondary body being adapted to open or close the outlet of said conduit.
- the main body and the secondary body are rigidly connected to each other.
- the main body extends in a direction perpendicular to the axis of rotation, while the secondary body extends in a direction parallel to said axis of rotation.
- the two lateral edges of the main body each have a relief, the internal structure of the valve having complementary reliefs, so that the reliefs of the main body come into bearing against the complementary reliefs of said structure to ensure sealing of the conduit.
- the lateral edges of the main body of the flap are located symmetrically on either side of the longitudinal axis of said main body. This complementarity of the rel iefs allows the shutter to ensure at its main body closure of the conduit with a maximized sealing.
- a valve according to the invention thus has a flap for sealing the duct, and a sealed opening of said duct, without loss of gas to the first outlet.
- a relief can just as easily be materialized by a hollow or a projecting element.
- the complementary reliefs are positioned at the periphery of an orifice of the internal structure of the valve.
- the complementary relief or reliefs can be obtained by machining the internal structure of the valve.
- the reliefs of the main body are represented by two elongate protuberances extending laterally along the body, which is rotated so that it rests on a section, the complementary elements being embodied by parts dug in the structure i nte rne dela va nn e.
- the essential for this configuration is that the protuberances are placed in said excavated parts, to ensure a close contact between the internal structure and the flap.
- the fact that the protuberances have a rounded shape privileges the sealing conditions by avoiding introducing angles that could be sources of gas passage.
- each protuberance and which is furthest from the secondary body is rounded, to best fit the excavated parts of the internal structure of the valve. These additional rounded portions further accentuate the sealing conditions between the flap and the entrance of the duct.
- the main body and the two protuberances are made in one piece, said protuberances corresponding to two stamped areas of the main body. This shutter configuration is the simplest and the fastest to burn. The embossing is an operation also making it possible to obtain a part having a precise geometry.
- the free end of the secondary body and which is farthest from the main body is delimited by a rectilinear flange extending parallel to the axis of rotation, said end being beveled.
- this end is gradually refined to end with a ridge.
- This bevel therefore increases the amplitude of rotation of the flap, so that it occupies a satisfactory position for which it will ensure the opening of the duct without loss of gas and ensure a tight closure of the first outlet.
- the bevel can also reduce the clearance between the end of the flap and the bar.
- the shutter is made of sheet metal.
- This material gives a certain flexibility to the flap, which can thus be deformed slightly in contact with the cond u it, in order to fully ensure its function of éta nchéotti l ors the opening or closing of said conduit.
- the valves according to the invention have the advantage of function ner neatly, both during the closing phase of the pipe and during its opening phase, by providing an improved seal by means of judicious arrangements. simple and quick to implement, and therefore inexpensive. Indeed, these arrangements consist of making small machining retouches at the entrance of the duct and to slightly modify the geometry of the shutter, so that the interaction of the shutter with the duct is optimized.
- FIG. 1 is a sectional view of an assembly consisting of a vanishing salt and a coolant, the flap being positioned to pass the gases to the cooler,
- FIG. 2 is a sectional view of an assembly consisting of a valve according to the invention and a cooler, the shutter being positioned to close the access path to the cooler,
- FIG. 3 is a perspective view of a shutter belonging to a valve according to the invention.
- FIG. 4 is a perspective view of the internal structure of a valve according to the invention, showing a plane support serving as a stop for the flap in its second position;
- FIG. 5a is a partial perspective view of the internal structure of a valve according to the invention, the flap being in an open position of the duct towards the cooler,
- FIG. 5b is a simplified view of the internal structure and the shutter of the valve of FIG. 5a, taken at another angle, and showing the points of support of said shutter,
- FIG. 6 is a simplified view of the internal structure and the valve flap of Figure 5b, the flap being in a closed position of the duct to the cooler.
- a valve 1 according to the invention is a valve of an EGR loop implanted in a gas supply circuit of a motor vehicle engine.
- An EGR loop deflects a portion of the flow from the engine, for rerouting in the portion of the power circuit located at the mount of the engine, so that the supply of said motor is carried out with a mixture of air and flue gas.
- An EGR valve 1 is generally coupled to a cooling device 2, provided to pre-cool the exhaust gas of the loop before it is fed to the gas supply stream of the reactor. motor, this cooling being sought only on certain operating ranges of the engine.
- a valve 1 according to the invention comprises an air inlet 3, a first gas outlet 4 for conveying them directly into the supply circuit, and a second outlet 5 for passing said gases in a duct 6 through the duct. Refreshing to 2 before injecting them into the power supply.
- the duct 6 defines a gas circulation loop passing through the cooler 2, said duct 6 having an inlet 19 extending the second outlet 5 of the valve 1, and an outlet opening at the first outlet 4 of the ladle van 1.
- the valve 1 is provided with a shutter 7 pivotally mounted, provided to adopt a first position for which it closes the second outlet 5 of the va ne 1, while opening the first outlet 4, and a second position for which it closes the first output 4 while opening the second output 5 of said valve.
- the rotational movement of the shutter 7 is automatically controlled by a central computing unit.
- FIG. 1 shows the flap 7 in its second position, for which it allows the passage of gases in the duct 6 passing through the cooler 2 in the direction indicated by the arrows 8.
- FIG. 2 shows the shutter 7 in its first position, for which it closes the duct 6 to direct the gas directly to the engine supply circuit, in the direction indicated by the arrows 9.
- the maximum rotation amplitude of the shutter 7 between the first and the second position is less than or equal to 90 °.
- the axis of rotation of the flap 7 is represented by two aligned cylindrical pins 10 facing each other and implanted in the internal structure of the valve 1.
- the flap 7 of a valve 1 comprises a main body 11 plane and a secondary body 12 plane, the two bodies 11,12 being in continuity with one another and interconnected rigidly.
- the main body 11 has a thin, rectangular, rectangular wall 13 and two parallel protuberances 14 extending along a longitudinal axis of the wall 13, said protuberances 14 embodying the two lateral edges of the main body 11 relative to a central longitudinal axis of said wall.
- the two protuberances 14 are identical and are each comparable to a corrugated edge having an S-shaped section.
- the rectangular wall 13 and the two lateral protuberances 14 constitute the same part, said protuberances being made by stamping.
- the secondary body 12 also has a flat, rectangular wall 15, having the same thickness as that of the wall 13 of the main cylindrical body 11, and is arranged perpendicularly to the main body 11. In other words, a large side of the wall 13 of the body main 11 is perpendicular to a large side of the wall 15 of the secondary body 12.
- the secondary body 12 is centered relative to the main body 11, so that the central longitudinal axis of the main body 11 intersects the two large sides of the secondary body 12 in their middle.
- the secondary body 12 is extended by a rectangular projection 16, the largest dimension of which is equal to the width of the main body 11, the secondary body 12 being connected to the main body 11 via this advance 16.
- this end 17 gradually decreases in thickness and ends with a ridge 18.
- the end 21 free of each protrusion 14, which is the end farthest from the secondary body 12, is rounded.
- the flap 7 is placed in the valve 1, so that the two cylindrical lugs 10 embodying its axis of rotation are found between the main body 11 and the secondary body 12 of the flap 7.
- the internal structure 19 of the valve 1 for passing the gases from the valve 1 to the cooler 2 has been used in such a way as to present a flat rim 20 allowing the main body 11 flap 7 to bear plane against said flange 20, when the vo let 7 is found in its second position po ula il u ula la ubiquit the second outlet 5 of the valve 1 and closes the first outlet 4.
- This plane support of the main body 11 of the flap 7 on the plane flange 20 of the internal structure 19 of the valve 1, is visible in Figures 5a and 5b.
- the contact with led flank plane 20 is insured with the wall 13 of the main body 11 of the flap 7.
- the periphery of the internal structure of the valve 1, against which is intended to come to press the main body 11 of the flap 7 when it flap 7 is found in its first position 4 corresponding to a closing the duct 6, has also been machined to reveal surface elements 22 worked, slightly hollowed, substantially having a geometry complementary to that of the protuberances 14 of the flap 7.
- valve 1 and the cooler 2 are separated by a wall comprising a bar 23 projecting.
- the flap 7 moves in rotation from its first position to its second position, the beveled end 17 of the secondary body 12 of the flap 7 is brought, at the end of the stroke, to come into contact with said bar 23.
- the fact that this end terminates in a bevel delimited by a thin edge 18 allows to extend by a few degrees the amplitude of rotation of said flap 7, avoiding that said end 17 comes too early to lock against said bar 23.
- the flap 7 can perform a complete rotation allowing it to occupy its second position by providing a complete seal, without leakage of gas to the first output 4 of the valve 1.
- a game can survive between the beveled end 17 of the secondary body 12 of the flap and the bar 23.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lift Valve (AREA)
- Exhaust-Gas Circulating Devices (AREA)
- Multiple-Way Valves (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1161008A FR2983532B1 (fr) | 2011-12-01 | 2011-12-01 | Vanne pour un circuit de circulation de gaz dans un vehicule |
| PCT/FR2012/052765 WO2013079880A1 (fr) | 2011-12-01 | 2012-11-30 | Vanne pour un circuit de circulation de gaz dans un véhicule |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2786007A1 true EP2786007A1 (fr) | 2014-10-08 |
| EP2786007B1 EP2786007B1 (fr) | 2017-10-11 |
Family
ID=47599036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP12816689.9A Not-in-force EP2786007B1 (fr) | 2011-12-01 | 2012-11-30 | Vanne pour un circuit de circulation de gaz dans un véhicule |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US9567927B2 (fr) |
| EP (1) | EP2786007B1 (fr) |
| JP (1) | JP6125522B2 (fr) |
| KR (1) | KR20140102724A (fr) |
| CN (1) | CN104081034B (fr) |
| FR (1) | FR2983532B1 (fr) |
| WO (1) | WO2013079880A1 (fr) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013003031A1 (de) * | 2013-02-22 | 2014-08-28 | Daimler Ag | Abgastrakt für eine Brennkraftmaschine |
| EP3339618A1 (fr) * | 2016-12-20 | 2018-06-27 | Borgwarner Emissions Systems Spain, S.L.U. | Soupape pour la construction d'une unité de récupération de chaleur compacte |
| US10273910B1 (en) * | 2018-01-17 | 2019-04-30 | Denso International America, Inc. | Exhaust gas distribution valve |
| DE102019103691A1 (de) * | 2019-02-14 | 2020-08-20 | Bayerische Motoren Werke Aktiengesellschaft | Abgas-Rückführ-Kühler für eine Brennkraftmaschine |
| KR102212578B1 (ko) * | 2019-11-26 | 2021-02-04 | 현대자동차 주식회사 | 이지알 쿨러용 바이패스 밸브 유닛 |
Family Cites Families (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4506703A (en) * | 1983-03-14 | 1985-03-26 | Water Services Of America, Inc. | Four-way fluid flow diverter valve |
| US4653537A (en) * | 1986-03-20 | 1987-03-31 | Water Services Of America, Inc. | Fluid flow diverter valve with improved chamber arrangement |
| GB2329001B (en) * | 1997-09-04 | 2001-09-05 | Gen Motors Corp | Exhaust gas recirculation valve |
| US5911243A (en) * | 1997-10-10 | 1999-06-15 | Univalve Llc | Multiport conversion system for butterfly valve |
| JP2002512337A (ja) * | 1998-04-16 | 2002-04-23 | 3カー−ヴァルナー・トゥルボズュステームズ・ゲーエムベーハー | ターボチャージ付内燃機関 |
| US6155296A (en) * | 1999-03-03 | 2000-12-05 | Eaton Corporation | Linear fluid flow valve |
| DE19936457A1 (de) * | 1999-08-03 | 2001-02-08 | Mann & Hummel Filter | Drosseleinrichtung mit einer Klappe zum Einbau in eine Flanschverbindung |
| US6289931B1 (en) * | 2000-01-19 | 2001-09-18 | Emerson Electric Co. | Cycle reversing valve for use in heat pumps |
| US6367256B1 (en) * | 2001-03-26 | 2002-04-09 | Detroit Diesel Corporation | Exhaust gas recirculation with condensation control |
| WO2003098026A1 (fr) * | 2002-05-15 | 2003-11-27 | Behr Gmbh & Co. Kg | Echangeur de chaleur des gaz d'echappement a commutation |
| EP1685322A1 (fr) * | 2003-10-17 | 2006-08-02 | Honeywell International, Inc. | Refroidisseur de gaz d'echappement a conduite de derivation interne |
| DE102004025184B4 (de) * | 2004-05-21 | 2008-01-31 | Pierburg Gmbh | Regelbare Zweiwegeventilvorrichtung |
| EP1605145B1 (fr) * | 2004-06-08 | 2011-08-24 | Nissan Motor Company Limited | Système d'échappement d'une moteur à combustion interne à plusieurs cylindres |
| US7069919B1 (en) * | 2005-01-06 | 2006-07-04 | Caterpillar Inc | Method and apparatus for controlling the ratio of ambient air to recirculated gases in an internal combustion engine |
| KR101299523B1 (ko) * | 2005-02-07 | 2013-08-23 | 보그워너 인코포레이티드 | 디젤 엔진용 배기 스로틀-egr 밸브 모듈 |
| JP4644517B2 (ja) * | 2005-04-19 | 2011-03-02 | 伸和コントロールズ株式会社 | 4ポート自動切換えバルブ |
| JP2007023911A (ja) * | 2005-07-19 | 2007-02-01 | Denso Corp | 排気ガス再循環装置 |
| JP4468277B2 (ja) * | 2005-10-03 | 2010-05-26 | 愛三工業株式会社 | 流路切替弁 |
| ES2279713B1 (es) * | 2005-12-23 | 2008-06-16 | Valeo Termico, S.A. | Intercambiador de calor de placas apiladas. |
| DE102006023852A1 (de) * | 2006-05-19 | 2007-11-22 | Mahle International Gmbh | Ventilanordnung für eine Abgasrückführeinrichtung |
| US7958874B2 (en) * | 2007-02-05 | 2011-06-14 | Denso Corporation | Exhaust gas recirculation apparatus |
| JP2008215336A (ja) * | 2007-02-05 | 2008-09-18 | Denso Corp | 排気ガス還流装置 |
| DE102007007111A1 (de) * | 2007-02-13 | 2008-08-14 | Siemens Ag | Klappenventil |
| JP2009002239A (ja) * | 2007-06-21 | 2009-01-08 | T Rad Co Ltd | Egrクーラ |
| JP4553023B2 (ja) * | 2008-03-21 | 2010-09-29 | 株式会社デンソー | 排気ガス切替弁 |
| JP5380522B2 (ja) * | 2008-03-31 | 2014-01-08 | ボーグワーナー インコーポレーテッド | マルチポート弁 |
| FR2933469B1 (fr) * | 2008-07-01 | 2013-01-11 | Valeo Sys Controle Moteur Sas | Ensemble d'un corps de vanne et d'un joint d'etancheite, ensemble d'un corps de vanne,d'un joint d'etancheite et d'une canalisation,joint pour l'ensemble |
| JP4640484B2 (ja) * | 2008-10-10 | 2011-03-02 | 株式会社デンソー | 排気ガス還流装置 |
| JP5009270B2 (ja) * | 2008-11-24 | 2012-08-22 | 愛三工業株式会社 | Egrクーラの切替バルブ |
| KR101016190B1 (ko) * | 2010-04-12 | 2011-02-24 | 주식회사 유니크 | 차량용 바이패스 밸브 |
-
2011
- 2011-12-01 FR FR1161008A patent/FR2983532B1/fr not_active Expired - Fee Related
-
2012
- 2012-11-30 JP JP2014543960A patent/JP6125522B2/ja active Active
- 2012-11-30 WO PCT/FR2012/052765 patent/WO2013079880A1/fr not_active Ceased
- 2012-11-30 KR KR1020147018283A patent/KR20140102724A/ko not_active Withdrawn
- 2012-11-30 CN CN201280068816.7A patent/CN104081034B/zh not_active Expired - Fee Related
- 2012-11-30 US US14/361,403 patent/US9567927B2/en not_active Expired - Fee Related
- 2012-11-30 EP EP12816689.9A patent/EP2786007B1/fr not_active Not-in-force
Also Published As
| Publication number | Publication date |
|---|---|
| JP2015500936A (ja) | 2015-01-08 |
| US20140318637A1 (en) | 2014-10-30 |
| CN104081034A (zh) | 2014-10-01 |
| EP2786007B1 (fr) | 2017-10-11 |
| JP6125522B2 (ja) | 2017-05-10 |
| FR2983532B1 (fr) | 2015-02-13 |
| US9567927B2 (en) | 2017-02-14 |
| KR20140102724A (ko) | 2014-08-22 |
| CN104081034B (zh) | 2017-08-04 |
| WO2013079880A1 (fr) | 2013-06-06 |
| FR2983532A1 (fr) | 2013-06-07 |
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