WO2007039702A1 - Dispositif de repartition des gaz recircules, refroidisseur de gaz recircules et procede de recirculation de gaz d'echappement - Google Patents
Dispositif de repartition des gaz recircules, refroidisseur de gaz recircules et procede de recirculation de gaz d'echappement Download PDFInfo
- Publication number
- WO2007039702A1 WO2007039702A1 PCT/FR2006/050979 FR2006050979W WO2007039702A1 WO 2007039702 A1 WO2007039702 A1 WO 2007039702A1 FR 2006050979 W FR2006050979 W FR 2006050979W WO 2007039702 A1 WO2007039702 A1 WO 2007039702A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- recirculated
- gas
- cooler
- gases
- outlet
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D21/00—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas
- F02D21/06—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air
- F02D21/08—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air the other gas being the exhaust gas of engine
-
- 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
- F02M26/65—Constructional details of EGR valves
- F02M26/71—Multi-way valves
-
- 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
-
- 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
- F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
- F02M26/30—Connections of coolers to other devices, e.g. to valves, heaters, compressors or filters; Coolers characterised by their location on the engine
-
- 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
- F02M26/50—Arrangements or methods for preventing or reducing deposits, corrosion or wear caused by impurities
Definitions
- the present invention relates to exhaust gas recirculation devices, called recirculated gas, EGR gas or EGR gas (for exhaust gas recirculation), and more particularly the EGR gas devices which comprises a gas cooler
- Document J P20043400099 relates to an EGR system of an internal combustion engine comprising two groups of separate cylinders.
- This EGR system has the particularity of being able to reversing the flow of exhaust gas flowing in the duct, and consequently in the coolers, by modifying the pressures of the exhaust gases between the first and the second group of cylinders.
- a major disadvantage is that it is necessary to have two separate groups of cylinders in which the exhaust gas pressures can be modified.
- the invention aims to solve the problem of fouling EGR coolers.
- the invention proposes an EGR gas distribution device, the device comprising an EGR gas inlet and an EG R gas outlet, an inlet orifice and an outlet orifice to a component, such as an EGR cooler. , and means for reversing the flow of EGR gas in this component.
- the invention also proposes a recirculated gas cooler which comprises means for reversing the flow of recirculated gases circulating in the heat exchanger.
- the invention also proposes an exhaust gas recirculation method, the method comprising a step of cleaning the EGR circuit triggered by an electronic unit, the cleaning step comprising a step of inverting the gas flow EG R crossing an EG R. cooler
- FIG. 1 is a diagram of distribution device according to the invention
- FIG. 2 and a diagram of a U-shaped cooler U
- FIGS. 3 and 4 are diagrams of the cooler EG with means for reversing the flow of recirculated gas
- FIGS. 5 and 6 are alternative embodiments of the EG cooler R
- Figures 7 and 8 show an alternative embodiment of the openings and the inlet and outlet chambers of the cooler.
- Figure 1 shows the device 1 for distributing recirculated gas to a component (not shown) of the EGR circuit according to the invention.
- the device 1 comprises an inlet e1 and an outlet if recirculated gas, an inlet orifice e2 and an outlet orifice s2 to the component, and means for reversing the flow of recirculated gas flowing in the component.
- the means for reversing the flow of recirculated gas may comprise a rotating valve.
- the valve may be in the form of a flap 3 pivoting on itself inside a cylinder formed in the device 1.
- the pivoting shutter 3 thus divides the cylinder into two separate volumes.
- the inlet e1 of the recirculated gases opens into the cylinder and is opposite the outlet if recirculated gases.
- the inlet orifice e2 for the recirculated gases in the component is defined on the cylinder between the inlet e1 and the outlet si, and it is opposite the outlet s2.
- the valve is rotatable between two positions.
- the first position is shown in Figure 1a.
- the flap In this position, the flap is inclined at +45 ° (taken in the counterclockwise direction with respect to a fictitious vertical axis); on the one hand there is the inlet e1 of the recirculated gases and the inlet orifice e2 towards the component which are in communication; and on the other hand, the outlet orifice s2 to the component and the outlet if recirculated gases which are in communication.
- the second position is shown in Figure 1b.
- the flap In this position, the flap is inclined at -45 °; on the one hand, there is the inlet e1 of the recirculated gases and the outlet orifice s2 to the component which are in communication; and on the other hand, there is the inlet orifice e2 towards the component and the outlet if recirculated gases which are in communication.
- the rotating valve can also have an intermediate position making it possible to bypass the component, thus conferring an additional bypass function which is directly integrated into the device.
- the pane is at
- valve is of the proportional valve type. With reference to FIG. 1 d, it is thus possible to define intermediate positions (between 0 ° and -45 °, and in the same way between
- the invention also relates to an EGR gas cooler which comprises means for reversing the flow of EGR gas circulating in the heat exchanger of the cooler.
- the cooler is configured in a U-shape.
- the cooler 2 comprises a heat exchanger 4.
- the heat exchanger 4 corresponds to a closed chamber which is traversed by a plurality of tubes 5 inside which the recirculated gases circulate.
- the tubes 5 separate the recirculated gases from the cooling fluid flowing in the exchanger between an inlet orifice 1 1 and an outlet orifice 12 defined on the closed enclosure.
- a partition wall 8 is provided at the volume 7 on an end surface of the exchanger 4. This partition 8 then defines a gas inlet chamber 9 recirculated and an outlet chamber 1 0 substantially recirculated gas.
- the inlet and outlet of the exhaust gases of the exchanger 4 are on the same plane, the separation being carried out by the partition 8.
- the means for reversing the recirculated gas flow comprise a valve of the type described above, that is to say, with reference to FIG. 4, which consists of a shutter 17 which pivots around itself at the The axes of the flap 17 and the cylinder 1 8 are coaxial.
- the valve also comprises a disc 13 (or plate 13) covering the inlet and the outlet of the cooler 2.
- the disc 13 closes the volume 7 of the cooler 2.
- This disc defines at least two openings e2 and s2, one e2 communicating with the chamber 9 gas inlet and the other s2 communicating with the gas outlet chamber 10. These openings e2 and s2 may be of quarter disc type, so as to cooperate with the positions of the flap 17.
- the axis of the flap 17 is perpendicular to the disc 13.
- the cylinder 1 8 defines the inlet e1 and the outlet if recirculated gases.
- the inlet e1 and outlet si By considering the shutter 1 7 rotating in the cylinder 18, the inlet e1 and outlet si, the inlet ports e2 and exit s2, we find the principle of distribution of the recirculated gases described above with the aid of Figure 1 .
- the difference lies in the realization of orifices e2 and s2, because they are defined on the disc 13.
- the disc 13 carries the bottom of the cylinder 18, it is conceivable that the disc 13 and the cylinder 1 8 are made together in one piece .
- Figures 7 and 8 show an alternative embodiment of the openings and the inlet and outlet chambers of the cooler.
- Partition 8 defines the inlet chambers 9 'and the outlet chambers 10'. These chambers are flared on the side so that the edges 1 09 'and 1 10' have an angle of inclination with respect to the partition 8.
- the plate 13 ' covers the two chambers 9' and 1 0 ', and defines 2 openings é2 and s'2. These openings are offset on the sides by at least half a length of the flap 1 7 pivoting.
- This variant makes it possible to reduce the losses of charges to favor the flow of the recirculated gases, as represented in FIG. 8. This variant thus takes up the principle of FIG. 1, with openings offset with respect to the openings of FIG.
- the valve may comprise means for increasing the distribution accuracy of the recirculated gas flow at the small openings thereof.
- a plate 19 perpendicular to the flap 17 whose curvature is adapted to that of the inner wall of the cylinder 1 8.
- the plate 19 may be for example of curved triangular shape on the flap 17. The advantage of adding this plate 19 to the flap 17 is that it increases the accuracy of the flow distribution variation at the flap 17. small openings relative to the first and second positions of the flap 17.
- the triangular shape can be divided into two equal parts 20, each of the parts 20 then being disposed on one side of the end of the inlet e1 or the outlet if opening into the cylinder 1 8.
- the invention also relates to an exhaust gas recirculation method, the method comprising a step of cleaning the EGR circuit triggered by an electronic unit.
- the cleaning step can begin for example when the temperature of the recirculated gas is sufficient to remove soot deposits, and this information can be provided by an engine temperature sensor.
- the cleaning step comprises a step of reversing the flow of EGR gas passing through an EGR cooler.
- the inversion step may be initiated after a predetermined time from the initiation of the cleaning step.
- the recirculation method can act directly on the drive means of the flap 17 of the recirculated gas cooler 2.
- These drive means may consist for example of an electric motor (or servomotor) which rotates the axis of the flap 17.
- the computer (not shown) can thus control the electric motor to rotate the flap 17 from its first position to its second, and thus reverse the flow of recirculated gas.
- This action, or step of reversing the flow can take place after a predetermined time which is stored in the computer memory. It is also possible to use other ways to engage this inversion step during the cleaning phase, for example by using sensors for temperatures, pressures, etc.
- the method may also provide a step of cleaning the valve represented by the flap 1 7 during this phase of cleaning the circulation of recirculated gas.
- the computer can control the electric drive motor to make it perform at least one complete rotation, so as to eliminate any deposits of soot.
- the method can also control the flap outside a cleaning phase by alternating, for example at each new start of the engine, the position of the flap between the first and second position.
- the method comprises for this purpose a reversal step of the recirculated gas flow in the cooler at each new start of the engine.
- One advantage of this characteristic is that the natural fouling of the cooler is more evenly distributed at the inlet and also at the outlet of the recirculated gases.
- the computer can control the valve in the following way during a cycle of engine operation: before starting the engine, put in the bypass position of the cooler, - then, when operating conditions are reached (for example when exceeding a temperature threshold of the cooling fluid representative of the engine heater), rotating the flap to put it in the first position, or in the second.
- the position of the flap is a function of the last of the two possible positions registered by the calculator. Or put in the intermediate position (in the case of a proportional type valve), to perform controlled cooling, but always on the opposite side to the last position (first or second) recorded by the computer, interlocking. a cleaning step when the temperature of the recirculated gases is sufficient, see also when another condition is met, such as a certain mileage of the vehicle, or when a differential pressure threshold representative of the fouling of the EGR cooler is exceeded.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2006800362754A CN101278120B (zh) | 2005-09-30 | 2006-10-02 | 分配再循环气体的设备、冷却再循环气体的设备和再循环排气的方法 |
US12/088,169 US7950376B2 (en) | 2005-09-30 | 2006-10-02 | Device for distributing recirculated gases, device for cooling recirculated gases and method of recirculating exhaust gases |
JP2008532847A JP2009510320A (ja) | 2005-09-30 | 2006-10-02 | 再循環ガスの分配装置、再循環ガスの冷却装置及び排気ガスの再循環方法 |
EP06831265A EP1934460A1 (fr) | 2005-09-30 | 2006-10-02 | Dispositif de repartition des gaz recircules, refroidisseur de gaz recircules et procede de recirculation de gaz d'echappement |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0552970A FR2891590B1 (fr) | 2005-09-30 | 2005-09-30 | Dispositif de repartition des gaz recircules, refroidisseur de gaz recircules et procede de recirculation de gaz d'echappement. |
FR0552970 | 2005-09-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007039702A1 true WO2007039702A1 (fr) | 2007-04-12 |
Family
ID=36636296
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2006/050979 WO2007039702A1 (fr) | 2005-09-30 | 2006-10-02 | Dispositif de repartition des gaz recircules, refroidisseur de gaz recircules et procede de recirculation de gaz d'echappement |
Country Status (7)
Country | Link |
---|---|
US (1) | US7950376B2 (fr) |
EP (1) | EP1934460A1 (fr) |
JP (1) | JP2009510320A (fr) |
KR (1) | KR20080067616A (fr) |
CN (1) | CN101278120B (fr) |
FR (1) | FR2891590B1 (fr) |
WO (1) | WO2007039702A1 (fr) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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EP1975400A1 (fr) * | 2007-03-28 | 2008-10-01 | Ford Global Technologies, LLC | Dispositif de refroidissement pour gaz d'échappement recyclé |
JP2009036077A (ja) * | 2007-08-01 | 2009-02-19 | Denso Corp | 排気ガス切替弁 |
WO2009048408A1 (fr) * | 2007-10-08 | 2009-04-16 | Scania Cv Ab (Publ) | Agencement et procédé de recirculation de gaz d'échappement provenant d'un moteur à combustion |
JP2015517636A (ja) * | 2012-05-15 | 2015-06-22 | ヴァレオ システム ドゥ コントロール モトゥール | 特に自動車用の流体循環バルブおよび該バルブを備える温度調整デバイス |
EP4328443A4 (fr) * | 2021-04-23 | 2024-09-18 | Toyota Jidoshokki Kk | Moteur à combustion interne et procédé de commande de moteur à combustion interne |
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US7588018B2 (en) * | 2006-06-06 | 2009-09-15 | Continental Automotive Systems Us, Inc. | Exhaust gas recirculation cooler bypass cartridge |
US7958874B2 (en) * | 2007-02-05 | 2011-06-14 | Denso Corporation | Exhaust gas recirculation apparatus |
DE102007038882A1 (de) | 2007-08-17 | 2009-02-19 | Pierburg Gmbh | Abgaskühlvorrichtung für eine Verbrennungskraftmaschine |
DE102008033823B4 (de) * | 2008-07-19 | 2013-03-07 | Pierburg Gmbh | Abgasrückführvorrichtung für eine Verbrennungskraftmaschine |
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 |
DE102008062455A1 (de) * | 2008-12-16 | 2010-06-17 | Man Turbo Ag | Schaltbare Solarheizeinrichtung für eine Gasturbine |
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CN102691593A (zh) * | 2011-03-25 | 2012-09-26 | 皮尔伯格有限责任公司 | 用于内燃机的废气冷却装置 |
FR2990741B1 (fr) * | 2012-05-15 | 2016-07-29 | Valeo Systemes De Controle Moteur | Vanne de circulation de fluide, notamment pour vehicule automobile, et dispositif de conditionnement thermique comprenant une telle vanne |
DE102013111215B4 (de) * | 2013-10-10 | 2019-11-07 | Pierburg Gmbh | Drosselklappenstutzen für eine Brennkraftmaschine sowie Verfahren zur Regelung einer Drosselklappe in einem Drosselklappenstutzen |
US9803760B2 (en) * | 2014-06-05 | 2017-10-31 | Schaeffler Technologies AG & Co. KG | Rotary valve with an isolating distribution body |
US10458313B2 (en) * | 2016-09-27 | 2019-10-29 | Hanon Systems | Multifunctional rotary valve module |
FR3060698B1 (fr) | 2016-12-20 | 2019-10-18 | Zodiac Pool Care Europe | Vanne compacte multivoie de raccordement entre deux circuits de circulation de fluide |
CN110657021B (zh) * | 2018-06-29 | 2020-11-20 | 潍柴动力股份有限公司 | 涡前控制阀及发动机 |
US10982900B2 (en) * | 2019-07-19 | 2021-04-20 | Solex Thermal Science Inc. | Thermal processing of bulk solids |
CN114076053B (zh) * | 2020-08-10 | 2022-12-06 | 长城汽车股份有限公司 | 一种废气再循环再生的方法、装置以及车辆 |
US11352986B2 (en) * | 2020-10-19 | 2022-06-07 | Ford Global Technologies, Llc | Systems and methods for a valve in a dual-core EGR cooler |
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2005
- 2005-09-30 FR FR0552970A patent/FR2891590B1/fr not_active Expired - Fee Related
-
2006
- 2006-10-02 JP JP2008532847A patent/JP2009510320A/ja not_active Ceased
- 2006-10-02 KR KR1020087007477A patent/KR20080067616A/ko not_active Application Discontinuation
- 2006-10-02 CN CN2006800362754A patent/CN101278120B/zh not_active Expired - Fee Related
- 2006-10-02 WO PCT/FR2006/050979 patent/WO2007039702A1/fr active Application Filing
- 2006-10-02 EP EP06831265A patent/EP1934460A1/fr not_active Withdrawn
- 2006-10-02 US US12/088,169 patent/US7950376B2/en not_active Expired - Fee Related
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1975400A1 (fr) * | 2007-03-28 | 2008-10-01 | Ford Global Technologies, LLC | Dispositif de refroidissement pour gaz d'échappement recyclé |
JP2009036077A (ja) * | 2007-08-01 | 2009-02-19 | Denso Corp | 排気ガス切替弁 |
WO2009048408A1 (fr) * | 2007-10-08 | 2009-04-16 | Scania Cv Ab (Publ) | Agencement et procédé de recirculation de gaz d'échappement provenant d'un moteur à combustion |
JP2015517636A (ja) * | 2012-05-15 | 2015-06-22 | ヴァレオ システム ドゥ コントロール モトゥール | 特に自動車用の流体循環バルブおよび該バルブを備える温度調整デバイス |
EP4328443A4 (fr) * | 2021-04-23 | 2024-09-18 | Toyota Jidoshokki Kk | Moteur à combustion interne et procédé de commande de moteur à combustion interne |
US12116960B2 (en) | 2021-04-23 | 2024-10-15 | Kabushiki Kaisha Toyota Jidoshokki | Internal combustion engine and method for controlling internal combustion engine |
Also Published As
Publication number | Publication date |
---|---|
CN101278120B (zh) | 2012-05-16 |
FR2891590B1 (fr) | 2010-09-17 |
EP1934460A1 (fr) | 2008-06-25 |
CN101278120A (zh) | 2008-10-01 |
US7950376B2 (en) | 2011-05-31 |
KR20080067616A (ko) | 2008-07-21 |
JP2009510320A (ja) | 2009-03-12 |
US20090007891A1 (en) | 2009-01-08 |
FR2891590A1 (fr) | 2007-04-06 |
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