EP1278945A1 - Schalldämpferanlage eines kraftfahrzeuges mit variabler dämpfungscharakteristik - Google Patents
Schalldämpferanlage eines kraftfahrzeuges mit variabler dämpfungscharakteristikInfo
- Publication number
- EP1278945A1 EP1278945A1 EP01947243A EP01947243A EP1278945A1 EP 1278945 A1 EP1278945 A1 EP 1278945A1 EP 01947243 A EP01947243 A EP 01947243A EP 01947243 A EP01947243 A EP 01947243A EP 1278945 A1 EP1278945 A1 EP 1278945A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- actuator
- valve
- spring
- silencer
- silencer system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- 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 muffler system of a motor vehicle with a muffler and actuator for changing the flow resistance of the exhaust gas flowing through in order to change the damping characteristics.
- a silencer system with variable damping characteristics of the aforementioned type in which a silencer for changing the exhaust gas flowing through in the inlet pipe has a poppet valve, the free valve stem end of which is connected to an overpressure can.
- the overpressure side of the overpressure box is connected to the inlet side of the inlet pipe via a pressure line. Thanks to the overpressure control, the valve disc of the poppet valve opens and closes continuously, so that the acoustic properties of the silencer also change continuously.
- the poppet valve is located inside the silencer.
- the poppet valve and the actuating mechanism of the poppet valve, in particular the valve tappet extend inside the muffler, in particular at least partially in a resonance chamber inside the muffler.
- the poppet valve arrangement is an integral part of the muffler itself.
- the internal flow obstruction of the poppet valve arrangement affects the damping characteristics of the muffler, particularly in high-performance internal combustion engines.
- two aforementioned separate silencers, each with an aforementioned pressure control, are required.
- the invention has for its object to provide a muffler system of the type mentioned, which causes simple damping optimal damping even with powerful internal combustion engines, especially in the low-frequency range and is still compact. This object is solved by the subject matter of the independent claim. Advantageous further developments result from the subclaims.
- the essence of the invention is that the actuator is provided in a flow branch with an inlet and two outlets, each outlet being connected to a silencer via a pipe and the flow cross section of the inlet being changeable by the actuator.
- a particular advantage of the invention is that the interior of the muffler - arrangement of the internal exhaust gas routing through the muffler, pipe bends, pipe lengths, resonance chamber (s), absorption chamber (s), sound absorbent material, partition walls, intermediate shells, perforation design, etc. - without a disruptive actuator or Poppet valve designed, and thus the internal damping characteristics of the silencer can be optimally designed.
- the counter pressure limitation or regulation takes place outside the actual silencer in a pre-arranged arrangement.
- two individual silencers are provided which have a common counter pressure limitation or control. According to the aforementioned prior art, two separate devices are required. The invention therefore reduces the effort practically to half.
- Another particular advantage of the invention is that the distribution of the volume flows in the two outputs of the pipe branch cannot be influenced.
- the installation of a central silencer can also be omitted.
- the pipelines expediently have the same flow cross-section in order to create the same flow conditions and the same damping characteristics in each of the two silencers.
- outlets of the pipe branch are in particular symmetrical to the axial axis of the inlet of the pipe branch, the actuator extending longitudinally and symmetrically to the axial axis of the inlet.
- the actuator can at least largely be structurally combined with the pipe branch and thus integrated into the pipe branch.
- the actuator is advantageously biased in the direction of its closed position, which largely closes the inlet, by a spring, preferably a compression spring, and can be moved against the force of the spring into an open position, which releases the inlet, when the back pressure of the flowing exhaust gas is increased before the inlet.
- a spring preferably a compression spring
- the actuator expediently has a closing body which can be brought into engagement with the input and which has at least one indentation on the circumference, preferably two indentations equally distributed over the circumference, and axial passages can also be provided, which are preferably equally distributed over the cross section of the closing body.
- a closing body which can be brought into engagement with the input and has a diameter such that a circumferential gap to the inside diameter of the entrance remains free in the closed position. The circumferential gap has the same effect as the aforementioned indentations or axial passages.
- the actuator is preferably a control valve with a valve tappet, and the closing body can be a flattened, conical or hemispherical valve disk or valve body.
- the closing body including indentations, etc., is advantageously constructed in a streamlined manner in order to reduce flow noise in the closing body in this way.
- the actuator is a passive switching element that automatically reaches its open position due to the force of the counter pressure.
- the force of the back pressure before the inlet of the pipe branch can act directly on the cross-sectional area of the closing body of the actuator exposed to the exhaust gas flow in order to automatically open the actuator against the force of the spring.
- a passive switching element provides that the force of the counter pressure is exerted on a separate actuating element of the actuator, which in turn then moves the actuator into its opening division.
- the actuating element is preferably an overpressure box, the pressure side of a membrane in the overpressure box being connected via a pressure line to the counterpressure in front of the inlet of the pipe branch, while on the low pressure side of the membrane the spring is arranged in the overpressure box, and the middle of the membrane the actuator, is particularly connected to the free end of the valve lifter of a poppet valve.
- the actuator is an active switching element in a further basic embodiment variant and has a separate actuating element which can be controlled by the control electronics of the motor vehicle engine or by the engine management.
- the actuating element is preferably a vacuum box, the low-pressure side of a diaphragm in the vacuum box being connected via a control line to a vacuum pump or to the intake manifold of the motor vehicle engine, and the center of the diaphragm to the actuator, in particular to the free end of the valve lifter of a poppet valve, connected is.
- the pressure side of the membrane of the vacuum box has a housing vent hole and thus atmospheric pressure or is directly exposed to the atmosphere without a housing part.
- the spring is expediently arranged on the low-pressure side of the membrane in the vacuum box, so that there is a compact overall arrangement of an actuating element.
- control line there can be at least one electromagnetically actuated switching valve or an infinitely variable pressure control valve which is then controlled by the control electronics of the motor vehicle engine via an electrical control line.
- the electromagnetically actuated switching valve can be a known 3/2-way valve with three connections and two positions, the first connection leading to the intake manifold or the vacuum pump, the second connection leading to the low-pressure side of the vacuum box and the third connection leading to the atmosphere. Then in the first valve position the first connection is connected to the second connection and in the second valve position the second connection is connected to the third connection.
- the vacuum can thus preferably be taken from the intake manifold of the engine or generated by a vacuum pump.
- the magnetic switch valve controlled by the engine management system causes the diaphragm box to be supplied with negative pressure (-> valve "OPEN”) or with atmospheric pressure (ventilation -> valve "CLOSE").
- the actuator can have a valve lifter, which is sealed and displaceably guided by a sealing plug in an intermediate wall of the pipe branch between the two outlets along the axial axis of the inlet to a spring housing containing the spring or on the stiffened plate-like diaphragm center of the diaphragm on the pressure side of the diaphragm Overpressure or vacuum box is attached.
- the sealing plug is preferably received in a sealed manner in a hollow cylindrical housing section of the spring housing or the overpressure or vacuum box, and the housing section is fastened to the intermediate wall.
- the principle of operation according to the invention essentially consists in opposing the exhaust gas via a spring-loaded valve, which is preferably an integral part of a flow branch. This leads to a reduction in the pulsations, which leads to an improvement in the acoustics (muzzle noise and / or vehicle interior noise). From a certain speed / load, the valve is opened so that the (performance-influencing) back pressure of the exhaust system does not exceed a certain level at higher speeds / loads. Flow noise is thus also avoided or reduced.
- Switching / controlling the valve can basically be done in two ways: The last-mentioned type is the switchover / control with the help of an active switching element, namely via the vacuum box depending on the setting of the control electronics or the engine management.
- the other type is the switchover / control with the aid of a passive switching element by utilizing the back pressure in front of the inlet of the pipe branch, namely indirectly via the above-mentioned actuating element of the overpressure box, or directly only via the spring, which is preferably a compression spring.
- the valve In the case of small throughputs, the valve is then kept closed by the spring. With increasing throughput, the valve begins to open and stops when the spring force is as large as the flow force acting on the valve disk. With this concept, a continuous opening is achieved, completely automatically, i.e. without a higher-level control.
- one or more springs can be provided in one package. Individual springs can also have different spring characteristics (linear, progressive). If necessary, the spring support can also be adjusted in the axial direction of the spring in order to establish a desired spring or closing force on the actuator.
- the switching element can be designed as a valve plate at a distance from the housing.
- the switching element can be a tight-fitting valve plate to the housing with one or more cutouts.
- the shape of the valve plate can be flattened, conical, hemispherical, etc.
- FIG. 1 shows a double silencer system of a motor vehicle schematically in a top view and partly in section in the area of a pipe branch
- FIG. 2 shows the pipe branch according to FIG. 1 in greater detail
- FIG. 3 shows the pipe branch according to FIG. 2 in a schematic end view
- FIG. 4 shows another pipe branch similar to FIG. 2,
- FIG. 5 shows the pipe branch according to FIG. 4 in a schematic end view
- FIG. 6 shows an electromagnetically actuable 3/2-way valve used in the invention in the one switching position
- Figure 7 shows the 3/2-way valve according to Figure 6 in the other switching position
- a muffler system 1 of a motor vehicle comprises two mufflers 2, 3 and an actuator 4 for changing the flow resistance of the exhaust gas flowing through in order to change the damping characteristics.
- the actuator 4 is provided in a flow branch 5 with an inlet 6 and two outlets 7, 8, each outlet 7 or 8 being connected via a pipe 9 or 10 to a muffler 2 or 3 and by the actuator the flow cross section D of Input 6 is changeable.
- the two silencers 2, 3 are constructed identically.
- the pipes 9, 10 have the same flow cross-section.
- the outputs 7, 8 of the pipe branch 5 are located symmetrically to the axial axis 11 of the inlet 6 of the pipe branch, the actuator 4 extending longitudinally and symmetrically to the axial axis of the inlet.
- the actuator 4 is largely structurally combined with the pipe branch.
- the system is constructed as a double silencer system for a single motor vehicle.
- the vehicle engine not shown, belonging to the vehicle is a powerful drive. It has a suction pipe which is connected via a suction or control line 20 to a separate actuating element 16 of the actuator 4.
- a suction or control line 20 In the control line 20 there is an electromagnetically operable 3/2-way valve, as shown in FIGS. 6 and 7.
- the 3/2-way valve in turn has an electrical control line which is connected to control electronics (not illustrated) of the motor vehicle engine. The functionality of the 3/2-way valve will be discussed later.
- the actuator 4 is biased in the direction of its closing position, which largely closes the inlet 6, by a spring 12 in the form of a compression spring and, in the case of an increased counterpressure p of the flowing exhaust gas in front of the inlet 6, can be moved against the force of the compression spring into an opening position which releases the inlet.
- the actuator has a closing body which can be brought into engagement with the input and has a diameter such that, in the closed position, a peripheral gap s to the inside diameter of the input 5 remains free.
- This embodiment variant is shown in FIGS. 2 and 3. It illustrates that even in the closed closed position of the actuator, an annular flow-through space for the exhaust gas in the area of the otherwise closed inlet 6 of the pipe branch 5 remains open in every operating case of the silencer system 1.
- the closing body 14 can have at least one indentation 15 on the circumference, preferably two indentations 15 equally distributed on the circumference, according to FIGS. 4 and 5. apart From the above-mentioned bays 15, a closing body can be supported in the closed position of the actuator on a peripheral edge of the entrance of the pipe branch and can serve as a guide and in particular as an end stop of the closed position of the actuator.
- the peripheral edge is a valve seat 26 in the form of an enlarged stepped section in the housing wall in the region of the inlet of the pipe branch 5.
- the actuator 4 is a control valve with a valve tappet 13, the closing body 14 being a flattened valve plate which is slightly conical on its inflow side and has rounded curves on the circumferential edge to facilitate flow.
- the end positions of the control valve, i.e. the closed position and the open position are determined by the separate actuating element 16, which will be discussed later.
- the actuator 4 can be a passive switching element that automatically reaches its open position due to the force of the counter pressure p.
- the force of the counter pressure p then acts directly on the cross-sectional area of the closing body 14 of the actuator 4 exposed to the exhaust gas flow S against the force of the compression spring 12.
- the actuator 4 is an active switching element, the force of the counterpressure p acting on the separate actuating element 16 of the actuator 4, which in turn moves the actuator 4 into its open position.
- the separate actuating element 16 is in particular a vacuum box, the low-pressure side 18 of a membrane 19 in the vacuum box being connected via the control line 20 to a vacuum pump or to the aforementioned intake manifold of the motor vehicle engine, and it is the stiffened plate-shaped circular membrane center with the free end of the Ventilst Congresseis 13 connected to a poppet valve which faces away from the closing member.
- the pressure side 17 on the other side of the membrane 19 of the vacuum box has a housing vent hole and thus has atmospheric pressure or is directly exposed to the atmosphere.
- the compression spring 12 is arranged on the low-pressure side 18 of the membrane 19 in the vacuum box along the axial axis 11. It is supported axially on the one hand on the plate-like membrane center 28 and on the other hand on a central molded seat in the vacuum box. The compression spring is clamped centrally in the vacuum box with preload.
- the diaphragm center 28 abuts a stepped axial stop of the housing of the vacuum box.
- the housing has an integral hollow cylindrical housing section 29 which extends coaxially in the direction of the closing body at a distance from the valve tappet 13 and, through a central opening in an intermediate wall 25 of the pipe branch 5, extends straight into the interior of the pipe branch and is fastened to the intermediate wall.
- the actuator 4 has a valve tappet 13, which is sealed and displaceable by a sealing plug 27 in the aforementioned intermediate wall 25 of the pipe branch 5 between the two outlets 7, 8 along the axial axis 11 of the inlet 6 to the one containing the compression spring Housing of the vacuum box is guided, wherein the valve lifter 13 is attached to the stiffened plate-like membrane center 28 of the membrane 19 on the pressure side of the vacuum box.
- the sealing plug 27 is received in a sealed manner in the hollow cylindrical housing section 29 of the housing of the vacuum box.
- the electromagnetically actuated switching valve 21 arranged in the control line 20 in the form of a 3/2-way valve according to FIGS. 6 and 7 has a first connection 22 to the intake manifold of the motor vehicle engine, a second connection 23 to the low-pressure side 18 of the vacuum socket and a third connection 24 to the atmosphere, the first port 22 being connected to the second port 23 in one (first) valve position and the second port 23 being connected to the third port 24 in the other (second) valve position.
- the first valve position is shown in Figure 6.
- the second valve position is illustrated in FIG. 7.
- the vacuum can be removed from the intake manifold of the engine as the active actuating element in the aforementioned vacuum box.
- the solenoid changeover valve controlled by the engine management system causes the diaphragm box to be supplied with negative pressure (-> valve "OPEN”) or with atmospheric pressure (ventilation -> valve "CLOSE").
- a changeover valve is basically shown of the aforementioned type in a third switching position, in which the valve is not only switched through to the intake manifold according to Figure 6 and switched to a venting position according to Figure 7, but in the third switching position both to the intake manifold and to the atmosphere can be kept closed.
- a valve also makes it possible to maintain a medium vacuum in the vacuum box, which is equivalent to maintaining a central position of the closing body 14.
- any number of intermediate positions of a closing body 14 can be set, and consequently the actuator 4 can be switched or regulated intermittently or almost continuously. It can also be provided in the control line 20 from the vacuum box to the suction pipe or the vacuum pump not only an electromagnetically actuated 3/2-way valve 21 according to FIGS.
- control line 20 can hold a medium vacuum in the control line 20 by switching the aforementioned on-off valve and thereby also the closing body 14 of the actuator 4 are held in an intermediate position.
- the functional principle according to the invention essentially consists in opposing the exhaust gas with a spring-loaded valve, which is preferably an integral part of a flow branch. This leads to a reduction in the pulsations, which leads to an improvement in the acoustics (ignition noise and / or vehicle interior noise). From a certain speed / load, the valve is opened so that the (performance-influencing) back pressure of the exhaust system does not exceed a certain level at higher speeds / loads. Flow noise is thus also avoided or reduced. Switching / controlling the valve can basically be done in two ways:
- the latter type is the switchover / control with the aid of an active switching element, namely via the vacuum box depending on the setting of the control electronics or the engine management.
- the other type is the switchover / control with the aid of a passive switching element using the counterpressure in front of the inlet of the pipe branch, namely directly only via the compression spring while omitting the vacuum socket.
- the valve With small throughputs, the valve is closed by the compression spring held. With increasing throughput, the valve begins to open and stops when the spring force is as large as the flow force acting on the valve disk. With this concept, a continuous opening is achieved, completely automatically, i.e. without a higher-level control.
- one or more springs can be provided in one package. Individual springs can also have different spring characteristics (linear, progressive). If necessary, the spring support can also be adjusted in the axial direction of the spring in order to establish a desired spring or closing force on the actuator.
- a passive switching element can also be an overpressure can, the force of the back pressure p being activated indirectly in the overpressure can in order to move the actuator 4 into its open position.
- the pressure cell is designed so that the pressure side 17 of the membrane in the pressure cell is connected via an unillustrated pressure line to the back pressure p in front of the inlet of the pipe branch, while on the low pressure side 18 of the membrane the compression spring is arranged in the pressure box, and the middle of the membrane is connected to the actuator, in particular to the free end of the valve tappet 13 of a poppet valve.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Description
Claims
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 (de) | 2000-04-26 | 2001-04-26 | Schalldämpferanlage eines kraftfahrzeuges mit variabler dämpfungscharakteristik |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1278945A1 true EP1278945A1 (de) | 2003-01-29 |
EP1278945B1 EP1278945B1 (de) | 2005-09-07 |
Family
ID=7640019
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01947243A Expired - Lifetime EP1278945B1 (de) | 2000-04-26 | 2001-04-26 | Schalldämpferanlage eines kraftfahrzeuges mit variabler dämpfungscharakteristik |
Country Status (5)
Country | Link |
---|---|
US (1) | US7040451B2 (de) |
EP (1) | EP1278945B1 (de) |
AT (1) | ATE304118T1 (de) |
DE (2) | DE10020491A1 (de) |
WO (1) | WO2001081734A1 (de) |
Families Citing this family (38)
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DE10106589C1 (de) * | 2001-02-13 | 2002-08-01 | Gillet Heinrich Gmbh | Schalldämpfer mit variabler Dämpfungscharakteristik |
DE10231056A1 (de) * | 2002-07-10 | 2004-02-05 | J. Eberspächer GmbH & Co. KG | Abgasanlage |
US8079441B2 (en) | 2002-09-08 | 2011-12-20 | Guobiao Zhang | Muffler |
CN1408990B (zh) * | 2002-09-08 | 2012-04-25 | 章国标 | 消声器 |
US20060249328A1 (en) * | 2002-12-26 | 2006-11-09 | Hiroyuki Ichikawa | Muffler for motor vehicle |
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. |
AU2007283449B2 (en) * | 2006-08-07 | 2013-12-05 | Zhanzhao Feng | Muffler assembly |
US7686130B1 (en) * | 2006-08-21 | 2010-03-30 | Fernando Quaglia | Dual mode vehicle exhaust system and associated method |
TWM321061U (en) * | 2007-03-22 | 2007-10-21 | Yi-Fan Peng | Exhaust back pressure apparatus for automobile and motorcycle engines |
US8453672B2 (en) * | 2007-03-29 | 2013-06-04 | Emcon Technologies Llc | Passive valve for attenuation of low frequency noise |
US9376947B2 (en) | 2007-03-29 | 2016-06-28 | Faurecia Emissions Control Technologies Usa, Llc | Hybrid valve for attenuation of low frequency noise |
US7681690B2 (en) * | 2007-07-13 | 2010-03-23 | Longyear Tm, Inc. | Noise abatement device for a pneumatic tool |
US7735603B2 (en) * | 2008-05-28 | 2010-06-15 | Longyear Tm, Inc. | Noise reducing device for a pneumatic tool |
US8365522B2 (en) * | 2008-08-21 | 2013-02-05 | Emcon Technologies Llc | Dual exhaust system with independent valve control |
JP5157782B2 (ja) * | 2008-09-25 | 2013-03-06 | スズキ株式会社 | 車両の排気管構造 |
US8215449B2 (en) | 2009-12-02 | 2012-07-10 | Longyear Tm, Inc. | Muffler system for noise abatement and ice control |
US8701823B2 (en) * | 2011-02-14 | 2014-04-22 | Honda Motor Co., Ltd. | Exhaust system for motorcycle |
WO2013134399A2 (en) | 2012-03-06 | 2013-09-12 | KATCON USA, Inc. | Exhaust valve assembly |
JP6032588B2 (ja) * | 2012-03-09 | 2016-11-30 | 本田技研工業株式会社 | 自動二輪車 |
CN105637201A (zh) * | 2013-03-27 | 2016-06-01 | 沃尔沃卡车集团 | 排气压力调节器 |
US20150184625A1 (en) * | 2013-12-30 | 2015-07-02 | Mann+Hummel Gmbh | Self-adjusting resonator |
US10443479B2 (en) | 2014-10-30 | 2019-10-15 | Roush Enterprises, Inc. | Exhaust control system |
WO2017079156A1 (en) | 2015-11-02 | 2017-05-11 | Roush Enterprises, Inc. | Muffler with selected exhaust pathways |
USD810644S1 (en) * | 2016-05-18 | 2018-02-20 | Welter Performance, LLC | Exhaust system |
TWD202445S (zh) * | 2018-10-30 | 2020-02-01 | 伊戈爾 阿克拉波維奇 | 排氣系統 |
US11230959B2 (en) | 2020-01-08 | 2022-01-25 | Cnh Industrial America Llc | Aspiration system for a work vehicle including an adjustably-sized venturi section |
EP3904650B1 (de) | 2020-04-28 | 2023-10-04 | Liebherr-Components Colmar SAS | Abgasnachbehandlungssystem |
CN115943251A (zh) * | 2020-07-14 | 2023-04-07 | 浙江吉利控股集团有限公司 | 一种排气消音装置、系统、车辆及排气消音方法 |
US11713700B2 (en) | 2020-07-24 | 2023-08-01 | Mike's Pipes, Inc. | Method and apparatus for converting a vehicle from a dual-in, single-out exhaust system to a dual-in, dual-out exhaust system |
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US2072372A (en) * | 1934-02-23 | 1937-03-02 | Riethmiller Ruth | Exhaust system for automotive engines |
US4913260A (en) * | 1988-01-11 | 1990-04-03 | Tenneco Inc. | Gas silencing system with controlling sound attenuation |
JP2723948B2 (ja) * | 1988-02-18 | 1998-03-09 | マツダ株式会社 | エンジンの制御装置 |
US4866933A (en) * | 1988-09-21 | 1989-09-19 | Whau Chih Kao | Exhaust silencer |
DE19503322C2 (de) * | 1995-02-02 | 2000-08-24 | Gillet Heinrich Gmbh | Schalldämpfer mit variabler Dämpfungscharakteristik |
DE19540716C1 (de) * | 1995-11-02 | 1997-04-17 | Gillet Heinrich Gmbh | Schalldämpfer mit variabler Dämpfungscharakteristik |
DE69702447T2 (de) * | 1996-04-22 | 2001-02-22 | Wilhelmus Lambertus Arn Meusen | Abgasvorrichtung für brennkraftmaschinen und fahrzeug mit dieser vorrichtung |
DE19837097B4 (de) * | 1998-08-17 | 2005-06-30 | Dr.Ing.H.C. F. Porsche Ag | Abgasanlage einer Brennkraftmaschine |
-
2000
- 2000-04-26 DE DE10020491A patent/DE10020491A1/de not_active Withdrawn
-
2001
- 2001-04-26 US US10/018,979 patent/US7040451B2/en not_active Expired - Fee Related
- 2001-04-26 AT AT01947243T patent/ATE304118T1/de not_active IP Right Cessation
- 2001-04-26 EP EP01947243A patent/EP1278945B1/de not_active Expired - Lifetime
- 2001-04-26 WO PCT/EP2001/004694 patent/WO2001081734A1/de active IP Right Grant
- 2001-04-26 DE DE50107367T patent/DE50107367D1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
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See references of WO0181734A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP1278945B1 (de) | 2005-09-07 |
DE50107367D1 (de) | 2005-10-13 |
DE10020491A1 (de) | 2002-03-14 |
ATE304118T1 (de) | 2005-09-15 |
WO2001081734A1 (de) | 2001-11-01 |
US7040451B2 (en) | 2006-05-09 |
US20020175022A1 (en) | 2002-11-28 |
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