EP1311754B1 - Dispositif soupape a double clapet et pont thermique destines a un systeme de recyclage des gaz d'echappement et procede d'utilisation - Google Patents

Dispositif soupape a double clapet et pont thermique destines a un systeme de recyclage des gaz d'echappement et procede d'utilisation Download PDF

Info

Publication number
EP1311754B1
EP1311754B1 EP01974209A EP01974209A EP1311754B1 EP 1311754 B1 EP1311754 B1 EP 1311754B1 EP 01974209 A EP01974209 A EP 01974209A EP 01974209 A EP01974209 A EP 01974209A EP 1311754 B1 EP1311754 B1 EP 1311754B1
Authority
EP
European Patent Office
Prior art keywords
valve
valve arrangement
exhaust
shaft
bearing housing
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.)
Expired - Lifetime
Application number
EP01974209A
Other languages
German (de)
English (en)
Other versions
EP1311754A1 (fr
Inventor
Stefan Goedtner
Marc Rother
Thomas Breit
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP1311754A1 publication Critical patent/EP1311754A1/fr
Application granted granted Critical
Publication of EP1311754B1 publication Critical patent/EP1311754B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • F02M26/38—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with two or more EGR valves disposed in parallel
    • 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
    • F02M26/65—Constructional details of EGR valves
    • F02M26/70—Flap valves; Rotary valves; Sliding valves; Resilient 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
    • F02M26/65—Constructional details of EGR valves
    • F02M26/71—Multi-way valves

Definitions

  • the invention relates to a valve arrangement for an exhaust gas recirculation system an internal combustion engine with a flange for flange mounting on a Heat sink with a defined temperature range according to the Preamble of claim 1.
  • Such a double flap is described for example in JP 07-198045.
  • a valve with two valve flaps made of ceramic equip to improve the heat resistance of the valve The two Valve flaps are connected via a common shaft and are connected to driven by a motor.
  • the valve flaps are at right angles to each other arranged so that only one of the two exhaust pipes is closed.
  • the different expansion behavior at changing temperatures of the ceramic valve flaps and the metallic exhaust pipes however lead to a reduced tightness of the valve arrangement.
  • the driver shows an as Bearing sleeve formed recess in the bearing journal of the first Exhaust flap to be inserted to create a driving connection can.
  • the other end of the driver is designed as a journal, which also for establishing a driving connection in a recess of the second exhaust flap can be inserted.
  • DE 198 41 927 A1 also discloses a valve arrangement with a double flap for an exhaust gas recirculation system.
  • the two exhaust gas recirculation lines one exhaust flap is provided, both exhaust flaps have a common pivot axis and the two exhaust flaps are rotated by 90 ° to each other.
  • the two return lines are thus alternately closed by the exhaust flaps or Approved.
  • An exhaust gas cooler is arranged in one of the two return paths. The valve arrangement is controlled in such a way that the exhaust gas cooler is cold Internal combustion engine is bypassed, however, when the internal combustion engine is warm the exhaust gases are cooled before being returned.
  • the object of the invention is a valve arrangement for an exhaust gas recirculation system of an internal combustion engine, which is cooled in a different way and also is inexpensive to manufacture and has a long service life.
  • the valve arrangement according to the invention for an exhaust gas recirculation system Internal combustion engine, in particular an internal combustion engine for diesel fuel of a passenger car, has a flange for flange mounting a heat sink with a defined temperature range.
  • the heat sink is inventively a water-cooled engine block of the internal combustion engine.
  • the exhaust gas recirculation system with a first and a second Exhaust gas recirculation line executed, in each of which a first and a second Valve flap is arranged.
  • the valve flaps are with a common shaft rotatable to each other in a bearing device with a bearing housing arranged that in each case at least one of the exhaust gas recirculation lines is lockable.
  • the bearing housing is connected to the flange via a structural thermal bridge so that the Bearing housing during the operation of the internal combustion engine Maximum temperature is less than 400 ° C, especially less than 300 ° C.
  • the bearing housing preferably has a maximum temperature of 250 ° C. especially in the event that the bearing housing consists essentially of one Aluminum material exists.
  • the valve arrangement according to the invention has a common shaft on which both valve flaps are arranged. In this way, making one such valve arrangement very inexpensive.
  • the wave thus extends through Both exhaust gas recirculation lines, which means that they are always one during operation exposed to high temperature because of the flowing past or in front of it stowed exhaust gas shows a temperature of approximately 800 ° C to 1000 ° C.
  • the absorbed thermal energy is transferred to the bearing device via the shaft forwarded. If there is insufficient heat flow from the bearing housing in adjacent components and / or the environment, different thermal expansion behavior of the bearing components Tensions occur affecting the functionality of the storage facility could affect.
  • the Bearing housing connected to the flange via a structural thermal bridge is that the bearing housing at no time during operation of the Internal combustion engine a temperature of 400 ° C, especially 300 ° C, exceeds.
  • a thermal bridge preferably has a high one Thermal conductivity to the heat introduced via the shaft over the To drain the housing quickly. If the flange is connected to a heat sink, which has a defined temperature range, the Temperature difference between the heat sink and the bearing device a heat flow to the heat sink. This effect is all the more effective the greater the temperature difference between the heat sink and the Storage device is.
  • the invention teaches the flange to connect a water-cooled engine block of the internal combustion engine, which during operation of the internal combustion engine has a temperature of Usually does not exceed 80 to 100 ° C. So is a simple and Valve arrangement with a shaft and two that can be produced particularly inexpensively Valve flaps created, which due to the structural thermal bridge has a long service life.
  • the thermal bridge is proposed so that the ratio of the thickness of the thermal bridge to the shortest length is at least 0.1.
  • the ratio is preferred at least 0.3, in particular at least 0.5.
  • the shortest length describes the shortest distance between the flange and the bearing housing.
  • the Thermal bridge has an average thickness perpendicular to this length.
  • the Average thickness is an average of the actual thicknesses of the thermal bridge the shortest length.
  • This ratio of thickness to length ensures one Thermal bridge, which is a cross section suitable for heat transport having. This also ensures that the thermal bridge is a has sufficient heat capacity. According to this ratio, it is particularly advantageous, the valve arrangement according to the invention near the Arrange heat sink, the thermal bridge is made relatively thick-walled is.
  • the flange has the Internal combustion engine essentially has a temperature like the heat sink on.
  • the heat sink is in particular a water-cooled engine block the internal combustion engine. This ensures that the Temperature difference between the bearing housing and the heat sink in the Essentially the temperature difference between the bearing housing and flange equivalent.
  • the connection between flange and heat sink is accordingly particularly good heat-conducting properties. Are particularly suitable for this metallic fasteners and / or seals with metallic Components.
  • the thermal bridge has and / or the bearing housing cooling fins.
  • Such cooling fins enlarge the Surface of the thermal bridge and / or the bearing housing, whereby the Heat radiation from the thermal bridge or the bearing housing is positive being affected.
  • the cooling fins on the thermal bridge enlarge the Cross-section, which also means the heat transport across the thermal bridge is improved.
  • the bearing device is provided with a Running bush made of a material with high thermal conductivity is, preferably with a bronze bushing.
  • a Running bush made of a material with high thermal conductivity is, preferably with a bronze bushing.
  • a socket supports the discharge of the heat introduced via the shaft into the bearing housing.
  • the bushing should be made with a large axial length, which means that the contact area with the bearing housing increases and at the same time the Heat flow is improved. In this way, thermal stresses significantly reduced in the storage device. This essentially has one wear-free storage resulting in the life of the valve assembly is increased.
  • the first and the second valve flap have a common pivot axis through the shaft and are essentially in a first and a respective arranged second valve flap level. It is according to another Design particularly advantageous if the valve flap planes make an angle include, the included angle is preferably 90 °.
  • the angles included between the first and second valve flap levels ensures that a different one in each of the two exhaust gas recirculation lines Opening cross-section can be set through which the desired Amount of exhaust gas flows.
  • An angle of 90 ° has the advantage that the valve flaps can be adjusted with a common shaft such that exhaust gas recirculation is closed, while the valve flap in the other exhaust gas recirculation does not represents a significant impediment to the exhaust gas flowing through.
  • the valve flaps each have one Bulge on, these bulges at least partially the wave enclose and the valve flaps are technically connected to the shaft.
  • the bulges provide in particular a bearing surface for the shaft Available, whereby the valve flaps are aligned on the shaft can.
  • the bulges ensure a suitable fixation of the Valve flaps on the shaft during the formation of the joining technology Connection. It is particularly advantageous to have the valve flaps with the shaft to weld. The welded connection is made even at high temperatures a permanent connection between valve flaps and shaft is guaranteed.
  • valve arrangement for a Exhaust gas recirculation system has the first exhaust gas recirculation line Exhaust gas cooler on.
  • the exhaust gas cooler reduces the temperature of the recirculated Exhaust gas, which also reduces the temperature in the air-fuel mixture is effected.
  • the air-fuel mixture is burned a lower combustion temperature is generated, whereby the nitrogen oxide content in the generated exhaust gas is further reduced.
  • the thermal bridge is close to the first Exhaust gas recirculation line is arranged.
  • the first exhaust gas recirculation line with the exhaust gas cooler is used in particular when the Internal combustion engine is in an operating state in which it is already very hot Exhaust gases are generated. It is sufficient in this operating phase Cooling of the storage device required, especially in the area of Bearing device via which the shaft is driven. This is through ensures a thermal bridge near the first exhaust gas recirculation line, because so the heat, which is absorbed by the shaft and the exhaust gas, quickly and can be effectively dissipated. This also helps to increase the Lifetime due to reduced thermal stress in the Storage device at.
  • the shaft is with a drive connected. It is particularly advantageous if the drive itself a control and / or regulating unit is connected. Because of the very complex Relationships between recirculated exhaust gas and the processes in the Combustion chamber, the exhaust gas recirculation system is dependent on the To operate the operating state of the internal combustion engine. Such a drive with an appropriate control or regulation unit ensures a quantitative and timely admixing of the exhaust gas to the air-fuel mixture.
  • the shaft has a groove and the bearing device on at least one socket, one in the groove Washer is arranged so that the bushing abuts the washer.
  • the disc has an opening through which the shaft extends. She is especially slotted to be easily installed in the groove can. The disc rests against a bearing surface of the bearing housing and is fixed the socket thus axially to the shaft.
  • the bearing housing over at least one connector connected to the exhaust gas cooler.
  • the at least one connecting part has one for one rapid and intensive heat dissipation from the bearing housing to Suitable heat conductivity and / or heat capacity.
  • the Exhaust gas cooler preferably has a water circuit, the Exhaust gas cooler always a certain temperature well below the Exhaust gas temperature, in particular between 80 ° C and 100 ° C. To this There is a clear temperature difference, which one Guaranteed heat flow from the bearing housing.
  • the valve arrangement thus has a common shaft for both valve flaps on, it is very inexpensive to manufacture, and also ensures a high Lifetime due to wear of the bearing due to thermal stress is significantly reduced.
  • this has at least a connector and / or the bearing housing at least one channel which a coolant can be introduced.
  • the cooling medium can be made directly be removed from the exhaust gas cooler, or it is for example an external cooling medium, such as air (especially the Intake air of an internal combustion engine), which if necessary by means of the Exhaust gas cooler cooled before being introduced into the at least one connecting part has been.
  • the channels are particularly inexpensive to manufacture if they are Through holes are executed. The openings not required can for example, be sealed tightly by simply designed closure pieces.
  • the at least one connecting part can be used as an integral part of the Bearing housing executed or attached to a channel as an additional component his.
  • a connecting part designed as a separate component is designed in such a way that that a suitable heat flow takes place over the connection area.
  • This last embodiment has the advantage that the introduction of the cooling medium in the bearing housing is designed variably. So the connector can be arranged that the shortest distance to the heat sink or to the exhaust gas cooler is realized.
  • FIG. 1 shows schematically the structure of an internal combustion engine 3 with four Combustion chambers 26.
  • the internal combustion engine 3 is on the Intake air line 5 air supplied to the environment, which then with the Fuel is mixed.
  • the actual one takes place in the combustion chambers 26 Combustion takes place, after which the exhaust gas generated in the exhaust line 27 cleaned and finally released into the environment.
  • the Exhaust gas recirculation system connects the exhaust pipe 27 and the Intake air line 5, wherein the exhaust gas at least partially through the Valve arrangement 1 flows 7.
  • the valve arrangement 1 has a drive 17 connected, which is activated via a control unit 18. Downstream 7 of the Valve arrangement 1 close a first 4a and a second Exhaust gas recirculation line 4b.
  • the first exhaust gas recirculation line 4a has an exhaust gas cooler 6.
  • the exhaust gas cooler 6 ensures that it exhaust gas flowing downstream 7 has a temperature which is so cool that when the air-fuel mixture burns only a small amount Nitric oxide emission takes place.
  • FIG 2 shows schematically a top view of the shaft 22 with the first Valve flap 8a and the second valve flap 8b. Both valve flaps 8a and 8b have a common pivot axis 15 through the shaft 22.
  • the first Valve flap 8a is arranged in a first valve flap level 19a.
  • the second Valve flap 8b is arranged in the second valve flap level 19b.
  • the Valve flap levels 19a and 19b form an angle 20. In the illustrated embodiment close the valve flap levels 19a and 19b an angle of 90 °.
  • the valve flaps 8a and 8b are connected to the shaft 22 welded 24.
  • FIG. 3 shows a particularly preferred embodiment according to the invention the valve assembly 1.
  • the valve assembly 1 has a flange 2 with which it is flanged to a water-cooled engine block 11.
  • the valve assembly 1 also has a first 4a and a second exhaust gas recirculation line 4b a first 8a and a second valve flap 8b, the Valve flaps 8a and 8b with a common shaft 22 rotatable in one Bearing device 9 with a bearing housing 12 are arranged relative to one another, that at least one of the exhaust gas recirculation lines 4a and 4b is closed.
  • the first 8a and the second valve flap 8b each have one first 16a and second bulge 16b, which at least partially enclose common shaft 22.
  • valve flaps 8a and 8b are with the Welded shaft 22.
  • the first valve flap 8a is opposite the second Valve flap 8b arranged offset by 90 °, the valve flaps 8a and 8b have a common pivot axis 15, so that at least one of the Exhaust gas recirculation lines 4a and 4b are closed.
  • the shaft 22 is guided in particular with a bearing device 9.
  • the Bearing device 9 is arranged in a bearing housing 12 and has one Bushing 13 made of bronze and a graphite lubrication 14 on.
  • the bronze Socket 13 ensures rapid removal of the shaft 22 into the Bearing device 9 heat introduced into the bearing housing 12.
  • Die Graphite lubrication 14 has the task of a relatively large Temperature range, the functionality and smooth running of the bearing guarantee.
  • the hot exhaust gas flows in the flow direction 7 in accordance with the arrangement of the Valve flaps 8a and 8b through either the first 4a or the second Exhaust gas recirculation line 4b.
  • the exhaust gas also flows around the shaft 22, whereby this absorbs heat and, among other things, into the bearing device 9 forwards.
  • To avoid life-limiting thermal Tension in the bearing device 9 is the bearing housing 12 via a structural thermal bridge 10 connected to the flange so that the Bearing housing 12 during operation of the internal combustion engine 3 a Maximum temperature is less than 400 ° C, especially less than 300 ° C.
  • the structural thermal bridge 10 has a shortest length 21 between flange 2 and Bearing housing 12 and an average thickness 25 aligned perpendicular thereto
  • the ratio of the average thickness 25 to the shortest length 21 is at least 0.1.
  • the bearing housing 12 and the thermal bridge 10 each have cooling fins 23. In this way, the heat transfer by convection respectively Heat radiation are supported.
  • the shaft (22) has a groove (28), a disc (29) in the groove (22) is arranged so that the bushing (13) abuts the disc (29).
  • the disc (29) lies against a contact surface of the bearing housing (12) and fixes the bush (13) thus axially (15) to the shaft (22).
  • Such an arrangement has the advantage that the shaft (22) only on the side with the bearing device (9) axially (15) must be fixed exactly, which is very inexpensive by a corresponding The groove (28) is designed.
  • FIG. 4 shows schematically and in a partial view another according to the invention Embodiment of the valve arrangement 1.
  • the valve arrangement 1 has one Flange 2, with which they are attached to a water-cooled engine block 11, for example can be flanged.
  • the valve arrangement 1 has a first 4a and one second exhaust gas recirculation line 4b, each with a first 8a and a second Valve flap 8b (not shown), the valve flaps 8a and 8b with a common shaft 22 rotatable in a bearing device 9 with a Bearing housing 12 are arranged.
  • the first valve flap 8a is opposite to the second valve flap 8b (not shown) arranged offset by 90 °
  • the shaft 22 is guided on the drive side in a bearing device 9.
  • the Bearing device 9 is arranged in a bearing housing 12 and has one Socket 13 made of bronze.
  • the bronze bush 13 ensures a quick Removal of those introduced by the shaft 22 into the bearing device 9 Heat into the bearing housing 12.
  • the hot exhaust gas either flows through the first 4a or the second exhaust gas recirculation line 4b.
  • the exhaust gas flows around also the shaft 22, whereby this absorbs heat and, inter alia, in the Forwarding device 9.
  • a structural thermal bridge 10 connected to the flange 2 to the heat to be able to dissipate.
  • the illustrated Embodiment For example, with extremely hot exhaust gases or during High performance operation of an internal combustion engine enables the illustrated Embodiment that over the connector 30, which with a clearly cooler exhaust gas cooler 6 (not shown) is also connected to the heat Exhaust gas cooler 6 is discharged.
  • the connector in particular has the same properties regarding thermal conductivity and / or thermal capacity on like a thermal bridge 10. This ensures that the Bearing housing 12 during operation of the internal combustion engine 3 a Maximum temperature is less than 400 ° C.
  • the illustrated embodiment additionally offers the possibility of cooling medium 32 in a channel 31 is initiated, which also contributes to the cooling of the bearing housing.
  • FIG. 5 shows a schematic sectional view (V-V) of the bearing housing 12 in FIG. 4.
  • Two connecting pieces 30 are arranged on the bearing housing 12, which are connected to an exhaust gas cooler 6 (not shown).
  • the Coolant 32 (indicated by the arrows) of the exhaust gas cooler 6 flows through the Channels 31 and thus cools the bearing housing 12.
  • the individual channels 31 are Holes, which can also be designed as through holes, the Through bores sealed by means of closure pieces 33 or are sealed so that no leakage occurs.
  • the coolant 32 will then returned to the exhaust gas cooler 6.
  • This Bearing housing 12 a seal.
  • the Bearing housing 12 has means for sealing, so that, for example, no exhaust gas from the exhaust gas recirculation line 4a through the bore 37, which for Receiving the shaft 22 is used, or lubricant 14 to the outside got into the environment.
  • Labyrinth seal, 12 graphite foil between in the bearing housing the bearing device 9 and a sleeve is arranged.
  • the graphite foil is as such or in the form of a preformed graphite ring around the shaft 22 wound, laid, or the like and by means of the bearing device 9 and Sleeve 13 deformed, so that preferably no continuous gaps exist between the individual film sections, but the Graphite foil sections always lie at least partially against each other.
  • the seal is suitable for sealing through holes that are provided in the bearing housing 12, which contains exhaust gas, this in particular has a very low oxygen content.
  • the one described Seal is due to its temperature capability up to about 700 ° C or 900 ° C is particularly suitable for use in mobile exhaust technology.
  • the Graphite foil at least partially results in graphite lubrication 14 or supports them. This may lead to minor scratches or the like regarding the graphite foil when moving (In particular rotating about the axis 15) elements of the bearing device 9 or rub the shaft 22 against the graphite foil during operation of the valve arrangement.
  • the resulting graphite particles are then preferably used for lubrication the storage device 9.
  • the at least partial implementation of the Bearing device 9 adjacent areas of the bearing housing 12 made of graphite possible.
  • valve arrangement according to the invention for an exhaust gas recirculation system Internal combustion engine is very inexpensive to manufacture and guaranteed at the same time a long service life, since the thermal stresses in the Bearing device clearly during the operation of the internal combustion engine were reduced compared to known valve arrangements.

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)

Claims (20)

  1. Agencement de soupapes (1) pour un système de recyclage des gaz d'échappement d'un moteur à combustion interne (3), avec une bride (2) pour le bridage sur un puits de chaleur avec une plage de températures définie et avec une première (4a) et une seconde conduite (4b) de recyclage des gaz d'échappement, avec respectivement un premier (8a) et un second clapet de soupape (8b), les clapets de soupapes (8a, 8b) étant disposés en rotation avec un arbre commun (22) dans un système de palier (9) avec une boíte de palier (12), de façon à ce que respectivement au moins l'une des conduites de recyclage des gaz d'échappement (4a, 4b) puisse être fermée, la boíte de palier (12) étant reliée à la bride (2) par l'intermédiaire d'un pont thermique structurel (10), de façon à ce qu'en cours d'exploitation du moteur à combustion interne (3), la boíte de palier soit à une température maximale inférieure à 400 °C, notamment inférieure à 300 °C et le puits de chaleur étant un bloc moteur (11) refroidi par eau du moteur à combustion interne (3).
  2. Agencement de soupapes (1) selon la revendication 1, caractérisé en ce que le pont thermique (10) présente une longueur la plus courte (21) entre la bride (2) et la boíte de palier (12) et une épaisseur moyenne (25) orientée à la parallèle de cette dernière, le rapport entre l'épaisseur moyenne (25) et la longueur la plus courte (21) étant d'au moins 0,1, de préférence d'au moins 0,3.
  3. Agencement de soupapes (1) selon l'une quelconque des revendications 1 ou 2, caractérisé en ce qu'en cours d'exploitation du moteur à combustion interne (3), la bride est à une température sensiblement identique à celle du puits de chaleur, c'est-à-dire du bloc moteur (11).
  4. Agencement de soupapes (1) selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le pont thermique (10) et/ou la boíte de palier (12) sont munis de nervures de refroidissement (23).
  5. Agencement de soupapes (1) selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le système de palier (9) est muni d'un coussinet (13), qui est formé en un matériau à haute capacité de conduction thermique, de préférence en bronze.
  6. Agencement de soupapes (1) selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le système de palier (9) est muni d'une lubrification au graphite (14).
  7. Agencement de soupapes (1) selon l'une quelconque des revendications 1 à 6, le premier (8a) et le second clapet de soupape (8b) présentant un axe de pivotement commun (15) à travers l'arbre (22) et étant sensiblement disposés sur un premier (19a) et sur un second plan (19b) des clapets de soupapes, caractérisé en ce que les plans des clapets de soupapes (19a, 19b) forment un angle (20).
  8. Agencement de soupapes (1) selon la revendication 7, caractérisé en ce que l'angle formé (20) est de 90 °.
  9. Agencement de soupapes (1) selon l'une quelconque des revendications 1 à 8, caractérisé en ce que les clapets de soupapes (8a, 8b) sont respectivement munis d'une courbure (16a, 16b), ces courbures entourant au moins partiellement l'arbre (22) et en ce que les clapets de soupapes (8a, 8b) sont reliés à l'arbre (22) par technique de jointage.
  10. Agencement de soupapes (1) selon la revendication 9, caractérisé en ce que les clapets de soupapes (8a, 8b) sont soudés sur l'arbre (22).
  11. Agencement de soupapes (1) selon l'une quelconque des revendications 1 à 10, caractérisé en ce que la première conduite de recyclage des gaz d'échappement (4a) est munie d'un refroidisseur des gaz d'échappement (6).
  12. Agencement de soupapes (1) selon la revendication 11, caractérisé en ce que le pont thermique (10) est disposé à proximité de la première conduite de recyclage des gaz d'échappement (4a).
  13. Agencement de soupapes (1) selon l'une quelconque des revendications 11 ou 12, caractérisé en ce que le système de palier (9) est relié au refroidisseur des gaz d'échappement (6) et peut être refroidi par ce dernier.
  14. Agencement de soupapes (1 ) selon l'une quelconque des revendications 1 à 13, caractérisé en ce que l'arbre (22) est relié à un entraínement (17).
  15. Agencement de soupapes (1) selon la revendication 14, caractérisé en ce que l'entraínement (17) est relié à une unité de commande (18) ou de réglage.
  16. Agencement de soupapes (1) selon l'une quelconque des revendications 1 à 15, le système de palier (9) étant réalisé avec un coussinet (13), caractérisé en ce que l'arbre (22) est muni d'une rainure (28), un disque (29) étant disposé dans la rainure (28), de façon à ce que le coussinet (13) s'applique sur le disque (29).
  17. Agencement de soupapes (1) selon l'une quelconque des revendications 1 à 16, caractérisé en ce que la boíte de palier (12) dispose de moyens d'étanchéité, pour que les gaz d'échappement ne s'échappent pas dans l'environnement extérieur à partir des conduites de recyclage des gaz d'échappement (4a, 4b), à travers un perçage pour la réception de l'arbre (22).
  18. Agencement de soupapes (1) selon la revendication 17, caractérisé en ce que dans la boíte de palier (12), du film de graphite est disposé entre le système de palier (9) et un coussinet, le film de graphite étant de préférence enroulé autour de l'arbre (22) et étant déformé à l'aide du système de palier (9) et du coussinet, pour former une sorte d'étanchéité labyrinthe.
  19. Agencement de soupapes (1) selon la revendication 11, caractérisé en ce que la boíte de palier (12) est reliée au refroidisseur des gaz d'échappement (6), par l'intermédiaire d'au moins un élément de raccordement (30).
  20. Agencement de soupapes (1) selon la revendication 19, caractérisé en ce que l'au moins un élément de raccordement (30) et/ou la boíte de palier (12) présentent au moins un canal (31), à travers lequel un fluide de refroidissement (32), notamment le fluide de refroidissement (32) du refroidisseur des gaz d'échappement (6) peut être introduit.
EP01974209A 2000-08-24 2001-08-23 Dispositif soupape a double clapet et pont thermique destines a un systeme de recyclage des gaz d'echappement et procede d'utilisation Expired - Lifetime EP1311754B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10041579A DE10041579A1 (de) 2000-08-24 2000-08-24 Ventilanordnung mit Doppelklappe und Wärmebrücke für ein Abgasrückführungssystem und Verfahren zu deren Betrieb
DE10041579 2000-08-24
PCT/EP2001/009729 WO2002016750A1 (fr) 2000-08-24 2001-08-23 Dispositif soupape a double clapet et pont thermique destines a un systeme de recyclage des gaz d'echappement et procede d'utilisation

Publications (2)

Publication Number Publication Date
EP1311754A1 EP1311754A1 (fr) 2003-05-21
EP1311754B1 true EP1311754B1 (fr) 2004-11-10

Family

ID=7653640

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01974209A Expired - Lifetime EP1311754B1 (fr) 2000-08-24 2001-08-23 Dispositif soupape a double clapet et pont thermique destines a un systeme de recyclage des gaz d'echappement et procede d'utilisation

Country Status (4)

Country Link
EP (1) EP1311754B1 (fr)
AU (1) AU2001293787A1 (fr)
DE (2) DE10041579A1 (fr)
WO (1) WO2002016750A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016107933A1 (de) 2015-05-05 2016-11-10 Borgwarner Ludwigsburg Gmbh Ventil für einen Abgasstrang einer Brennkraftmaschine und Verfahren zum Steuern von zwei Abgasströmen
CN107882662A (zh) * 2017-12-29 2018-04-06 无锡隆盛科技股份有限公司 双通道egr碟阀

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10251293A1 (de) 2002-11-04 2004-05-13 Siemens Ag Ventil
FR2848605B1 (fr) * 2002-12-11 2006-08-04 Renault Sa Dispositif et procede d'alimentation en comburant d'un moteur diesel
KR20060124691A (ko) * 2004-02-09 2006-12-05 베헤르 게엠베하 운트 콤파니 카게 자동차 배기가스 냉각장치
JP4431579B2 (ja) * 2004-09-28 2010-03-17 株式会社ティラド Ｅｇｒクーラ
DE102004057306A1 (de) 2004-11-26 2006-06-01 Siemens Ag Verfahren zur Rückführung eines Teilstromes an Abgas zu einem Verbrennungsmotor eines Kraftfahrzeuges
DE102005012644A1 (de) * 2005-03-18 2006-09-21 Siemens Ag Verfahren zur Rückführung eines Teilstromes an Abgas zu einem Verbrennungsmotor eines Kraftfahrzeuges
US7469691B2 (en) 2005-12-09 2008-12-30 Borgwarner Inc. Exhaust gas recirculation cooler bypass
DE102006023809B3 (de) * 2006-05-20 2007-09-13 Pierburg Gmbh Wärmeübertragungseinheit für Verbrennungskraftmaschinen
DE102006054041B3 (de) * 2006-11-16 2008-05-08 Pierburg Gmbh Regelvorrichtung für eine Verbrennungskraftmaschine
FR2911638B1 (fr) * 2007-01-19 2009-03-13 Renault Sas Systeme d'orientation d'un flux de gaz de combustion en re-circulation
DE102011000894A1 (de) 2011-02-23 2012-08-23 Pierburg Gmbh Klappenvorrichtung für eine Verbrennungskraftmaschine
ES2696980T3 (es) * 2015-09-14 2019-01-21 Bosal Emission Control Systems Nv Componente de recuperación de calor para un sistema de gases de escape de un motor de combustión interna
WO2017179392A1 (fr) * 2016-04-12 2017-10-19 日立オートモティブシステムズ株式会社 Corps de vanne, corps d'étranglement commandé électroniquement, corps d'étranglement entraîné par un moteur, et dispositif de vanne
JP6728109B2 (ja) 2017-06-28 2020-07-22 愛三工業株式会社 Ｅｇｒクーラバイパスバルブ
FR3105306B1 (fr) * 2019-12-20 2022-12-30 Valeo Systemes De Controle Moteur Module de recirculation des gaz d’échappement

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07198045A (ja) 1994-01-10 1995-08-01 Ngk Insulators Ltd 排気管用バタフライ弁及びこれを用いた排気管構造
DE4426028C1 (de) 1994-07-22 1995-11-30 Gillet Heinrich Gmbh Abgasklappensystem
JP3420403B2 (ja) * 1995-09-13 2003-06-23 本田技研工業株式会社 エンジンのｅｇｒバルブ支持構造
DE19841927A1 (de) * 1998-09-14 2000-03-16 Wahler Gmbh & Co Gustav Einrichtung zur Rückführung eines Abgasstromes zum Saugrohr einer Brennkraftmaschine
DE19906401C1 (de) * 1999-02-16 2000-08-31 Ranco Inc Of Delaware Wilmingt Abgasrückführsystem

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016107933A1 (de) 2015-05-05 2016-11-10 Borgwarner Ludwigsburg Gmbh Ventil für einen Abgasstrang einer Brennkraftmaschine und Verfahren zum Steuern von zwei Abgasströmen
DE102016107933B4 (de) 2015-05-05 2022-08-18 Borgwarner Ludwigsburg Gmbh Ventil für einen Abgasstrang einer Brennkraftmaschine und Verfahren zum Steuern von zwei Abgasströmen
CN107882662A (zh) * 2017-12-29 2018-04-06 无锡隆盛科技股份有限公司 双通道egr碟阀

Also Published As

Publication number Publication date
WO2002016750A1 (fr) 2002-02-28
AU2001293787A1 (en) 2002-03-04
DE10041579A1 (de) 2002-03-07
EP1311754A1 (fr) 2003-05-21
DE50104500D1 (de) 2004-12-16

Similar Documents

Publication Publication Date Title
EP1311754B1 (fr) Dispositif soupape a double clapet et pont thermique destines a un systeme de recyclage des gaz d'echappement et procede d'utilisation
EP1291509B1 (fr) Ensemble soupape ayant un écoulement bypass interne
EP2041419B1 (fr) Dispositif de refroidissement des gaz d'échappement destiné en particulier à un véhicule à moteur
EP1286026B1 (fr) Système d'échappement d'un véhicule automobile
DE102006000425B4 (de) Fluidsteuerventil
EP1363013B1 (fr) Echangeur de chaleur
DE102017124725A1 (de) Steuerungsventil
EP2025911B1 (fr) Dispositif de refroidissement de gaz d'échappement pour un moteur à combustion interne
EP2305975A2 (fr) Moteur à combustion interne équipé d'une pompe d'alimentation en huile moteur et procédé de chauffage de l'huile moteur d'un tel moteur à combustion interne
EP1857761B1 (fr) Unité de transmission de la chaleur pour moteurs à combustion interne
DE60218053T2 (de) Abgasrückführung
DE602004000705T3 (de) Ventil für ein Abgasrohr
DE102006011727B3 (de) Kombiniertes Heizungs-/Warmwassersystem für mobile Anwendungen
EP2048345B1 (fr) Echangeur thermique, notamment destiné au refroidissement des gaz d'échappement
EP2942500A1 (fr) Échangeur thermique de gaz d'échappement doté d'un tube de dérivation
DE60208832T2 (de) Vorrichtung für Abgasrückführung
DE10142539A1 (de) Abgaswärmeübertrager
EP1288543A1 (fr) Clapet rotatif en une seule pièce et vanne rotative
DE10228619B4 (de) Abgasrohr für die Abgasanlage eines Kraftfahrzeugs
DE102017130153A1 (de) Vorrichtung zur Wärmeübertragung
DE102019214264B4 (de) Abgasklappenventil mit thermisch isolierter Dichtung sowie Verbrennungsmotor und Kraftfahrzeug hiermit
DE102022100177A1 (de) Motorsystem
DE102022112067A1 (de) Abgasrückführventil für einen Abgastrakt einer Verbrennungskraftmaschine und Kraftfahrzeug mit einer Verbrennungskraftmaschine und einem Abgasrückführventil
DE102022102846A1 (de) Lagergehäuse für einen Abgasturbolader, Gehäuse sowie Abgasturbolader
DE102020106240A1 (de) Abgasrückführungsvorrichtung für eine Verbrennungskraftmaschine und Verbrennungskraftmaschine für ein Kraftfahrzeug

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20030219

AK Designated contracting states

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

17Q First examination report despatched

Effective date: 20030610

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

RBV Designated contracting states (corrected)

Designated state(s): DE FR GB

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20041110

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: GERMAN

REF Corresponds to:

Ref document number: 50104500

Country of ref document: DE

Date of ref document: 20041216

Kind code of ref document: P

GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 20041110

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

ET Fr: translation filed
26N No opposition filed

Effective date: 20050811

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20120831

Year of fee payment: 12

Ref country code: FR

Payment date: 20120906

Year of fee payment: 12

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140301

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20140430

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50104500

Country of ref document: DE

Effective date: 20140301

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130902