EP1278945B1 - Systeme de silencieux de vehicule automobile - Google Patents

Systeme de silencieux de vehicule automobile Download PDF

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Publication number
EP1278945B1
EP1278945B1 EP01947243A EP01947243A EP1278945B1 EP 1278945 B1 EP1278945 B1 EP 1278945B1 EP 01947243 A EP01947243 A EP 01947243A EP 01947243 A EP01947243 A EP 01947243A EP 1278945 B1 EP1278945 B1 EP 1278945B1
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EP
European Patent Office
Prior art keywords
actuator
exhaust silencer
valve
silencer system
inlet
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
EP01947243A
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German (de)
English (en)
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EP1278945A1 (fr
Inventor
Herbert Schumacher
Volker Geis
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.)
Eberspaecher Climate Control Systems GmbH and Co KG
Original Assignee
J Eberspaecher GmbH and Co KG
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Publication of EP1278945A1 publication Critical patent/EP1278945A1/fr
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/16—Silencing apparatus characterised by method of silencing by using movable parts
    • F01N1/165—Silencing apparatus characterised by method of silencing by using movable parts for adjusting flow area
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/011—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more purifying devices arranged in parallel

Definitions

  • the invention relates to a silencer system according to the preamble of claim 1.
  • From DE 195 03 322 A1 is a muffler system with variable Damping characteristics known, when a muffler to change the flowing through Exhaust gas in the inlet pipe has a poppet valve whose free Valve tappet end communicates with an overpressure can.
  • the overpressure side of the overpressure can is via a pressure line connected to the input side of the input tube. thanks the pressure control opens and closes the valve plate the poppet valve continuously, so that the acoustic Change silencer properties continuously.
  • the poppet valve is located inside the muffler.
  • the poppet valve and the actuating mechanism of the poppet valve, in particular the valve stem extend inside the muffler, in particular at least partly in a resonance chamber inside the muffler.
  • the poppet valve assembly is an integral part of the Silencer itself.
  • the inner flow obstruction of the poppet valve assembly affects the damping characteristic the silencer especially in high-performance internal combustion engines.
  • For powerful combustion engines are two aforementioned separate silencers with one each aforementioned pressure control required.
  • WO 97/40264 discloses a silencer system of a Motor vehicle with two silencers and an actuator for changing the flow resistance of the flowing through Exhaust gas for the purpose of changing the damping characteristic, wherein the actuator in a flow branch with a Input and two outputs is provided.
  • the invention is based on the object, a silencer system to provide the type mentioned, with simple means optimal damping even at high power Internal combustion engines, in particular in the low-frequency Area effected and nevertheless compact constructed.
  • the actuator in a flow branch provided with an input and two outputs is, each output via a pipeline with a Silencer connected and through the actuator of the Flow cross section of the input is changeable.
  • Particular advantage of the invention is that the interior of the Silencer - Arrangement of the internal exhaust system through the Silencer, pipe bends, pipe lengths, resonance chamber (s), Absorption chamber (s), sound-absorbing material, partitions, intermediate shells, Perforation design, etc. - without disturbing Actuator or poppet valve designed, and thus optimal designed the internal damping characteristic of the muffler can be.
  • the backpressure limitation or regulation takes place outside the actual silencer in an upstream Arrangement.
  • two individual silencers provided that a common backpressure limitation or regulation.
  • Two separate facilities are required. The invention thus reduces the effort practically on the Half.
  • Another particular advantage of the invention is that the distribution the volume flows in the two outlets of the pipe branch can not be affected. Also can be in one Structural conception of a complete system of a silencer arrangement the establishment of a middle silencer eliminated.
  • the pipes suitably have the same Flow area to each of the two mufflers same flow conditions and a same damping characteristic to accomplish.
  • the outputs of the branch pipe are in particular symmetrical located to the axial axis of the entrance of the branch pipe, wherein the actuator is longitudinal and symmetrical to Axial axis of the entrance extends.
  • the actuator can at least largely with the manifold structurally united and therefore in the branch pipe be integrated.
  • the actuator is beneficial in the direction of its input largely closing position closed by a spring, preferably a compression spring, preloaded and before Input increased back pressure of the flowing exhaust gas against the Force of the spring in an opening releasing the input movable.
  • a spring preferably a compression spring
  • the actuator has expediently one with the input engageable closing body, which on the perimeter at least one indentation, preferably two on the circumference equally distributed indentations, and also axial passages may be provided, preferably via the Cross section of the closing body are equally distributed.
  • the actuator can also with the actuator closed by the exhaust gas Closing body at low load or low speed of Run through the motor vehicle engine. Increases the load or the engine speed, the actuator builds a larger Flow resistance or back pressure, which then by Opening of the actuator degraded or limited upwards becomes.
  • Another variant provides that the actuator with a the input engageable closing body with a Diameter such that in the closed position a Circumference gap remains free to the inner diameter of the entrance.
  • the circumferential gap has the same effect as the aforementioned indentations or axial passages.
  • the actuator is a control valve with a Valve tappet, wherein the closing body is a flattened, conical or hemispherical valve disk or valve body can be.
  • the closing body including indentations, etc. is with Advantage streamlined constructed to flow-through noise to reduce the closing body already in this way.
  • the actuator is in a basic embodiment a passive switching element caused by the force of the back pressure automatically gets into its open position.
  • the actuator is preferably a positive pressure can, where the pressure side of a membrane in the pressure box via a pressure line with the back pressure before Entrance of the branch pipe is connected while on the Low pressure side of the diaphragm the spring in the pressure box is arranged, and the diaphragm center with the actuator, in particular with the free end of the valve stem of a poppet valve, connected is.
  • the actuator in a further fundamental Embodiment variant is an active switching element and a separate actuator, that of the control electronics the motor vehicle engine or engine management is controllable.
  • the actuating element is preferably a vacuum box, the low pressure side a diaphragm in the vacuum box via a control line with a vacuum pump or with the intake manifold of the motor vehicle engine connected, and the diaphragm center with the actuator, in particular with the free end of the valve stem of a Poppet valve, is connected.
  • the pressure side of the membrane of the vacuum unit a housing vent hole and therefore atmospheric pressure on or without housing part is directly the atmosphere exposed.
  • the spring on the low pressure side of Membrane is placed in the vacuum box, so that a results in a compact overall arrangement of an actuating element.
  • control line may be at least one Electromagnetically actuated switching valve or a continuously variable adjustable pressure control valve are located, which then each from the control electronics of the motor vehicle engine via an electrical control line is activated.
  • the electromagnically actuated switching valve can be a per se well-known 3/2-way valve with three connections and two positions be, with the first connection to the intake manifold or the Vacuum pump, the second connection to the low pressure side of the vacuum box and the third connection leads to the atmosphere.
  • the actuator may include a valve lifter which seals and displaceable by a sealing plug in one Intermediate wall of the pipe branch between the two outputs along the axial axis of the entrance to the outside up to guided a spring housing containing the spring or on the stiffen platy membrane center of the membrane on the pressure side the positive or negative pressure box is attached.
  • the sealing plug is preferably in a hollow cylindrical Housing section of the spring housing or the Koch- or vacuum box sealed, and the housing section attached to the partition.
  • the functional principle according to the invention consists essentially in it, the exhaust via a spring-loaded valve, which preferably an integral part of a flow branching is to oppose a resistance. This leads to a reduction in pulsations, resulting in an improvement the acoustics (muzzle noise and / or vehicle interior noise) leads. From a certain speed / load is the Valve opened so that the (power-influencing) back pressure the exhaust system at higher speeds / loads a certain Does not exceed measure. Flow noise is so also avoided or reduced.
  • the switching / control of the valve can basically be done in two ways: The latter type is the switching / control with Help an active switching element, namely on the vacuum box depending on the setting of the control electronics or the Engine management.
  • the other type is the switching / control with the help of a passive switching element by utilizing the back pressure before the entrance of the branch pipe, namely indirectly via the aforementioned actuator of the pressure box, or directly only via the spring, which is preferably a compression spring.
  • the spring which is preferably a compression spring.
  • the valve is closed by the spring held. With increasing throughput the valve starts to open and stay when the spring force is as great as the force acting on the valve disk flow force. With this concept achieves a continuous opening, and completely automatically, so without higher-level control.
  • one or more be provided several springs in a package.
  • Single feathers can also have a different spring characteristic (linear, progressive).
  • the spring support in the axial direction of the spring be adjusted to a desired spring or closing force to set up the actuator.
  • a muffler system 1 comprises a Motor vehicle two silencers 2, 3 and an actuator 4 for changing the flow resistance of the flowing through Exhaust gas for the purpose of changing the damping characteristic.
  • the actuator 4 is in a flow branch 5 with a Input 6 and two outputs 7, 8 provided, each Output 7 or 8 via a pipe 9 or 10 with a Silencer 2 or 3 connected and by the actuator of the Flow cross-section D of the input 6 is variable.
  • the two silencers 2, 3 are the same.
  • the Pipes 9, 10 have a same flow cross-section.
  • the outputs 7, 8 of the manifold 5 are symmetrical to the axial axis 11 of the input 6 of the manifold located, wherein the actuator 4 is longitudinal and symmetrical extends to the axial axis of the entrance.
  • the actuator 4 is largely structurally associated with the pipe branch.
  • the plant is as a double muffler system of a single Motor vehicle built.
  • the vehicle associated not illustrated motor vehicle engine is a powerful drive. He owns one Suction pipe, which via a suction or control line 20 with a separate actuator 16 of the actuator 4 is connected is.
  • a suction or control line 20 In the control line 20 is an electromagnetic operable 3/2-way valve, as shown in Figures 6 and FIG. 7 is shown.
  • the 3/2-way valve has its part an electrical control line that does not have one illustrated control electronics of the motor vehicle engine connected is. On the functioning of the 3/2-way valve will be discussed later.
  • the actuator 4 is in the direction of his Entrance 6 largely occlusive closed position by a spring 12 biased in the form of a compression spring and at in front of the entrance 6 increased back pressure p of the flowing exhaust gas against the force of the compression spring in a release the input Opening position movable.
  • the actuator has a engageable with the input Locking body with a diameter such that in the closed position a circumferential gap s to the inner diameter the input 5 remains free.
  • This variant is in Figures 2 and 3 shown. She illustrates that also in the self-contained closed position of the actuator an annular flow space for the exhaust gas in the area the otherwise closed entrance 6 of the manifold 5 in each case of operation of the muffler system 1 remains open.
  • the Closing body 14 on the circumference at least one indentation 15, preferably two equally distributed on the circumference indentations 15, according to Figures 4 and 5 have.
  • apart of the aforementioned Einbuchten 15 may be a closing body in the closed position of the actuator on a peripheral edge support the entrance of the pipe branch and as a guide and in particular as an end stop of the closed position of Serving actuator.
  • the peripheral edge is in the embodiment according to Figures 4 and 5, a valve seat 26 in the form of a extended stepped section in the housing wall in the Area of the entrance of the pipe branch 5.
  • the actuator 4 is a control valve with a valve lifter 13, wherein the closing body 14 is a flattened valve plate is slightly conical and on its upstream side the peripheral edge is aerodynamically provided with curves.
  • the end positions of the control valve, i. the closed position and the open position, are by the separate actuator 16, which will be discussed later.
  • the actuator 4 may be a passive switching element, the by the force of the back pressure p automatically into its open position arrives. The force of the back pressure p then acts directly on the exhaust gas flow S exposed cross-sectional area the closing body 14 of the actuator 4 against the Force of the compression spring 12th
  • Actuator 4 an active switching element, wherein the force of Jacobrucks p on the separate actuator 16 of the Actuator 4 acts, which in turn the actuator 4 in moves its open position.
  • the separate actuator 16 is in particular a vacuum box, wherein the low pressure side 18 of a membrane 19 in the vacuum box via the control line 20 with a vacuum pump or with the aforementioned intake manifold of the motor vehicle engine is connected, and it is the stiffened platy circular diaphragm center with the free end of the valve lifter 13 of a poppet valve connected to the closing member turned away.
  • the pressure side 17 on the other side of the membrane 19 of the Vacuum box has a housing vent hole and thus Atmospheric pressure on or is directly exposed to the atmosphere.
  • the compression spring 12 is on the low pressure side 18 of the membrane 19 arranged in the vacuum box along the axial axis 11. It relies on the one hand axially on the flat membrane center 28 and on the other hand on a central mold seat in the Vacuum box off.
  • the compression spring is in the vacuum box Centrally clamped with preload.
  • In the closed position of the poppet valve of Figure 2 strikes the diaphragm center 28 at a stepped axial stop of the housing of the vacuum unit at.
  • the housing has an integral hollow cylindrical Housing portion 29, which is coaxial in the direction of Closing body extends at a distance from the valve stem 13 and through a central opening in an intermediate wall 25 of the Pipe branching 5 straight into the interior of the pipe branch extends and is secured with the intermediate wall.
  • the actuator 4 has, according to FIG. 2, a valve tappet 13 which is sealed and displaceable by a sealing plug 27 in the above intermediate wall 25 of the manifold 5 between the two outputs 7, 8 along the Axial axis 11 of the input 6 to the outside to which the compression spring containing housing of the vacuum cell is guided, wherein the valve stem 13 at the stiffened platy membrane center 28 of the diaphragm 19 on the pressure side of the vacuum unit is attached.
  • the sealing plug 27 is in the hollow cylindrical housing portion 29 of the housing of the vacuum unit sealed.
  • electromagnetically actuated Switching valve 21 in the form of a 3/2-way valve according to Figures 6 and 7 has a first terminal 22 for Suction tube of the motor vehicle engine, a second terminal 23rd to the low pressure side 18 of the vacuum box and a third Connection 24 to the atmosphere, wherein in the one (first) valve position the first terminal 22 to the second terminal 23rd and in the other (second) valve position, the second port 23 is connected to the third terminal 24.
  • the first Valve position is shown in Figure 6.
  • the second valve position is illustrated in FIG.
  • a changeover valve is basically the aforementioned one Art shown in a third switching position, in the the valve is not only switched through according to Figure 6 to the intake manifold and switched according to Figure 7 in a venting position is, but in the third switching position both to the intake manifold as well as being closed to the atmosphere can.
  • Such a valve also allows holding a medium vacuum in the vacuum box, which is synonymous with the holding of a middle position of the closing body 14 is. It can in such a variant of any set many intermediate positions of a closing body 14 Consequently, the actuator 4 can intermittently or almost infinitely switched or regulated become.
  • control line 20 of the Vacuum box to the intake manifold or the vacuum pump not only an electromagnetically actuated 3/2-way valve 21 after Figures 6 and 7, but in the control line 20 between the terminal 23 and the vacuum unit additionally an electromagnetic operable on-off valve to arrange. Also then, in a through-connected manner shown in FIG Switching position of the 3/2-way valve 21, the control line 20 by switching the aforementioned on-off valve in the blocking position a medium vacuum in the control line 20 and thereby also the closing body 14 of the actuator 4 are held in an intermediate position.
  • the functional principle according to the invention thus essentially exists in it, the exhaust via a spring-loaded valve, which preferably an integral part of a flow branching is to oppose a resistance. This leads to to a reduction of the pulsations, resulting in an improvement the acoustics (muzzle noise and / or vehicle interior noise) leads. From a certain speed / load is the Valve opened so that the (power-influencing) back pressure the exhaust system at higher speeds / loads a certain Does not exceed measure. Flow noise is so also avoided or reduced.
  • the switching / control of the valve can basically be done in two ways:
  • the latter type is the switching / control with Help an active switching element, namely on the vacuum box depending on the setting of the control electronics or the Engine management.
  • the other type is the switching / control with the help of a passive switching element by utilizing the back pressure before the entrance of the branch pipe, namely directly over the Compression spring omitting the vacuum box.
  • the valve In small Throughputs, the valve is closed by the compression spring held. With increasing throughput the valve starts to open and persists when the spring force is as big as that on the Valve plate acting flow force is. With this concept a continuous opening is achieved, completely automatically, ie without higher-level control.
  • one or more be provided several springs in a package.
  • Single feathers can also have a different spring characteristic (linear, progressive).
  • the spring support in the axial direction of the spring be adjusted to a desired spring or closing force to set up the actuator.
  • a passive switching element can also be an overpressure can wherein the force of the back pressure p indirectly in the pressure box is activated to the actuator 4 in its open position to move.
  • the pressure box is designed so that the pressure side 17 of the membrane in the pressure box over a not illustrated pressure line with the back pressure p before connected to the entrance of the pipe branch while on the low pressure side 18 of the diaphragm, the compression spring in the Overpressure box is arranged, and the diaphragm center with the Actuator, in particular with the free end of the valve stem 13 a poppet valve is connected.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)

Claims (22)

  1. Système de silencieux (1) d'un véhicule automobile, comprenant deux silencieux (2, 3) et un actionneur (4) servant à modifier la résistance d'écoulement du gaz d'échappement s'écoulant afin de modifier la caractéristique d'amortissement, dans lequel l'actionneur (4) est prévu dans une ramification d'écoulement (5) ayant une entrée (6) et deux sorties (7, 8), chaque sortie (7, respectivement 8) étant connectée par le biais d'une conduite tubulaire respective (9, respectivement 10) à un silencieux respectif (2, respectivement 3), caractérisé en ce que l'actionneur (4) permet de modifier la section transversale d'écoulement (D) de l'entrée (6).
  2. Système de silencieux selon la revendication 1,
    caractérisé en ce que les deux silencieux (2, 3) sont construits de manière identique.
  3. Système de silencieux selon la revendication 1 ou 2,
    caractérisé en ce que les conduites tubulaires (9, 10) possède un section transversale d'écoulement identique.
  4. Système de silencieux selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les sorties (7, 8) de la ramification tubulaire (5) sont disposées symétriquement par rapport à l'axe axial (11) de l'entrée (6) de la ramification tubulaire, l'actionneur (4) s'étendant le long de l'axe axial de l'entrée et symétriquement par rapport à celui-ci.
  5. Système de silencieux selon l'une quelconque des revendications 1 à 4,
    caractérisé en ce que
    l'actionneur (4) est au moins pour la majeure partie combiné de manière constructive à la ramification tubulaire.
  6. Système de silencieux selon l'une quelconque des revendications 1 à 5,
    caractérisé en ce que
    l'actionneur (4) est précontraint dans la direction de sa position de fermeture fermant en majeure partie l'entrée (6) par un ressort (12), de préférence un ressort de compression, et est déplaçable à l'encontre de la force du ressort dans une position d'ouverture libérant l'entrée dans le cas d'une contre-pression (p) du flux de gaz d'échappement accrue avant l'entrée (6).
  7. Système de silencieux selon l'une quelconque des revendications 1 à 6,
    caractérisé en ce que
    l'actionneur (4) possède un corps de fermeture (14) pouvant être amené en prise avec l'entrée, qui présente sur la périphérie au moins un renfoncement (15), de préférence deux renfoncements (15) répartis uniformément sur la périphérie.
  8. Système de silencieux selon l'une quelconque des revendications 1 à 7,
    caractérisé en ce que
    l'actionneur (4) possède un corps de fermeture (14) pouvant être amené en prise avec l'entrée, lequel présente des passages axiaux qui sont de préférence répartis uniformément sur la section transversale du corps de fermeture.
  9. Système de silencieux selon l'une quelconque des revendications 1 à 8,
    caractérisé en ce que
    l'actionneur présente un corps de fermeture pouvant être amené en prise avec l'entrée, ayant un diamètre tel que dans la position de fermeture, il subsiste un interstice périphérique (s) par rapport au diamètre intérieur de l'entrée (5).
  10. Système de silencieux selon l'une quelconque des revendications 1 à 9,
    caractérisé en ce que
    l'actionneur (4) est une soupape de commande avec une tige de soupape (13), le corps de fermeture (14) étant un corps de soupape ou une tête de soupape aplati(e), conique ou hémisphérique.
  11. Système de silencieux selon l'une quelconque des revendications 1 à 10,
    caractérisé en ce que
    l'actionneur (4) est un élément de commutation passif et parvient automatiquement dans sa position d'ouverture par la force de la contre-pression (p).
  12. Système de silencieux selon la revendication 11,
    caractérisé en ce que
    la force de la contre-pression (p) s'exerce directement sur la surface de la section transversale du corps de fermeture (14) de l'actionneur (4) exposée à l'écoulement de gaz d'échappement (S), à l'encontre de la force du ressort (12).
  13. Système de silencieux selon la revendication 11,
    caractérisé en ce que
    la force de la contre-pression (p) s'exerce sur un élément d'actionnement séparé (16) de l'actionneur (4), lequel déplace l'actionneur (4) dans sa position d'ouverture.
  14. Système de silencieux selon la revendication 13,
    caractérisé en ce que
    l'élément d'actionnement est une boíte de surpression, le côté pression (17) d'une membrane étant connecté dans la boíte de surpression par le biais d'une conduite de pression à la contre-pression (p) avant l'entrée de la ramification tubulaire, tandis que du côté basse pression (18) de la membrane, le ressort (12) est disposé dans la boíte de surpression, et le milieu de la membrane est connecté à l'actionneur, notamment à l'extrémité libre de la tige de soupape (13) d'une soupape à disque.
  15. Système de silencieux selon l'une quelconque des revendications 1 à 10,
    caractérisé en ce que
    l'actionneur (4) est un élément de commutation actif et présente un élément d'actionnement séparé (16) qui peut être commandé par l'électronique de commande du moteur du véhicule automobile.
  16. Système de silencieux selon la revendication 15,
    caractérisé en ce que
    l'élément d'actionnement (16) est une boíte de dépression, le côté basse pression (18) d'une membrane (19) étant connecté dans la boíte de dépression par le biais d'une conduite de commande (20) à une pompe à vide ou au tube d'aspiration du moteur du véhicule automobile, et le milieu de la membrane est connecté à l'actionneur (4), notamment à l'extrémité libre de la tige de soupape (13) d'une soupape à disque.
  17. Système de silencieux selon la revendication 16,
    caractérisé en ce que
    le côté pression (17) de la membrane (19) de la boíte de dépression présente un alésage de désaérage du boítier et donc une pression atmosphérique ou est directement exposé à l'atmosphère.
  18. Système de silencieux selon la revendication 16 ou 17,
    caractérisé en ce que
    le ressort (12) est disposé du côté basse pression (18) de la membrane (19) dans la boíte de dépression.
  19. Système de silencieux selon l'une quelconque des revendications 16 à 18,
    caractérisé en ce qu'au
    moins une soupape de commutation à fonctionnement électromagnétique (21) ou une soupape de régulation de pression réglable en continu est disposée dans la conduite de commande (20) et est commandée à chaque fois par l'électronique de commande du moteur du véhicule automobile.
  20. Système de silencieux selon la revendication 19,
    caractérisé en ce que
    la soupape de commutation à fonctionnement électromagnétique (21) est une soupape à 3/2 voies et présente un premier raccord (22) au tuyau d'aspiration ou à la pompe à vide, un deuxième raccord (23) au côté basse pression (18) de la boíte de dépression et un troisième raccord (24) à l'atmosphère, le premier raccord (22) étant connecté au deuxième raccord (23) dans une première position de soupape et le deuxième raccord (23) étant connecté au troisième raccord (24) dans une deuxième position de soupape.
  21. Système de silencieux selon l'une quelconque des revendications 1 à 20,
    caractérisé en ce que
    l'actionneur (4) présente une tige de soupape (13) qui est guidée de manière étanche et déplaçable à travers un bouchon d'étanchéité (27) dans une paroi intermédiaire (25) de la ramification tubulaire (5) entre les deux sorties (7, 8) le long de l'axe axial (11) de l'entrée (6) vers l'extérieur jusqu'à un boítier de ressort contenant le ressort (12), ou qui est fixée au milieu (28) plat renforcé de la membrane (19) du côté pression (17) de la boíte de surpression ou de dépression.
  22. Système de silencieux selon la revendication 21,
    caractérisé en ce que
    le bouchon d'étanchéité (27) est reçu hermétiquement dans une portion de boítier (29) cylindrique creuse du boítier de ressort ou de la boite de surpression ou de dépression et la portion de boítier (29) est fixée à la paroi intermédiaire (25).
EP01947243A 2000-04-26 2001-04-26 Systeme de silencieux de vehicule automobile Expired - Lifetime EP1278945B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10020491 2000-04-26
DE10020491A DE10020491A1 (de) 2000-04-26 2000-04-26 Schalldämpferanlage eines Kraftfahrzeuges mit variabler Dämpfungscharakteristik
PCT/EP2001/004694 WO2001081734A1 (fr) 2000-04-26 2001-04-26 Systeme de silencieux de vehicule automobile

Publications (2)

Publication Number Publication Date
EP1278945A1 EP1278945A1 (fr) 2003-01-29
EP1278945B1 true EP1278945B1 (fr) 2005-09-07

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EP01947243A Expired - Lifetime EP1278945B1 (fr) 2000-04-26 2001-04-26 Systeme de silencieux de vehicule automobile

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US (1) US7040451B2 (fr)
EP (1) EP1278945B1 (fr)
AT (1) ATE304118T1 (fr)
DE (2) DE10020491A1 (fr)
WO (1) WO2001081734A1 (fr)

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DE10311201A1 (de) * 2003-03-14 2004-09-30 Heinrich Gillet Gmbh Schalldämpfer mit variabler Dämpfungscharakteristik
DE10319212B4 (de) * 2003-04-29 2010-02-11 Heinrich Gillet Gmbh Schalldämpfer mit variablen akustischen Eigenschaften
JP4424593B2 (ja) * 2004-04-27 2010-03-03 本田技研工業株式会社 自動二輪車の排気装置
GB2414274A (en) * 2004-05-18 2005-11-23 Richard Bushell Dynamic exhaust system for vehicular i.c. engines
DE102004040631B3 (de) * 2004-08-21 2007-02-08 J. Eberspächer GmbH & Co. KG Klappenanordnung
DE102005004674B4 (de) * 2005-02-02 2014-01-23 Eberspächer Exhaust Technology GmbH & Co. KG Vorrichtung zur Schalldämpfung von pulsierenden Gasströmen
DE202005007847U1 (de) * 2005-05-13 2005-07-28 Ricardo Deutschland Gmbh Vorrichtung zum Freigeben und Absperren einer Abgasleitung
TWM282036U (en) * 2005-07-27 2005-12-01 Ming-Hung Jeng Improved piston-type pressure relief valve for turbine exhaust
US20070163243A1 (en) * 2006-01-17 2007-07-19 Arvin Technologies, Inc. Exhaust system with cam-operated valve assembly and associated method
KR101225860B1 (ko) * 2006-03-02 2013-01-24 현대자동차주식회사 차량용 배기 파이프의 분기 구조.
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Also Published As

Publication number Publication date
WO2001081734A1 (fr) 2001-11-01
US7040451B2 (en) 2006-05-09
DE50107367D1 (de) 2005-10-13
DE10020491A1 (de) 2002-03-14
US20020175022A1 (en) 2002-11-28
EP1278945A1 (fr) 2003-01-29
ATE304118T1 (de) 2005-09-15

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