EP3143263A1 - Exhaust system having variable exhaust gas paths - Google Patents
Exhaust system having variable exhaust gas pathsInfo
- Publication number
- EP3143263A1 EP3143263A1 EP15709936.7A EP15709936A EP3143263A1 EP 3143263 A1 EP3143263 A1 EP 3143263A1 EP 15709936 A EP15709936 A EP 15709936A EP 3143263 A1 EP3143263 A1 EP 3143263A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flow path
- flow
- exhaust system
- muffler
- exhaust
- 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
- 230000003584 silencer Effects 0.000 claims abstract description 18
- 238000002485 combustion reaction Methods 0.000 claims abstract description 3
- 230000001419 dependent effect Effects 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000005192 partition Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 210000002268 wool Anatomy 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
- F01N1/083—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using transversal baffles defining a tortuous path for the gases or successively throttling gas flow
-
- 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
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
-
- 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
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
- F01N1/089—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using two or more expansion chambers in series
-
- 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
- F01N1/168—Silencing apparatus characterised by method of silencing by using movable parts for controlling or modifying silencing characteristics only
-
- 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
- F01N13/02—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 separate silencers in series
-
- 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
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/36—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an exhaust flap
-
- 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
- F01N2470/00—Structure or shape of gas passages, pipes or tubes
- F01N2470/02—Tubes being perforated
-
- 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
- F01N2470/00—Structure or shape of gas passages, pipes or tubes
- F01N2470/14—Plurality of outlet tubes, e.g. in parallel or with different length
-
- 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
- F01N2470/00—Structure or shape of gas passages, pipes or tubes
- F01N2470/16—Plurality of inlet tubes, e.g. discharging into different chambers
-
- 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
- F01N2470/00—Structure or shape of gas passages, pipes or tubes
- F01N2470/24—Concentric tubes or tubes being concentric to housing, e.g. telescopically assembled
-
- 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
- F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
- F01N2590/04—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for motorcycles
Definitions
- the invention relates to an exhaust system for internal combustion engines, preferably in motorcycles having an exhaust gas line, which has a first flow path and a second flow path for an exhaust gas flow, wherein the first and second flow paths are separated into each other from a pre-silencer (20) to an end silencer (FIG. 6) extend.
- an exhaust system is provided with an exhaust line, which has at least a first flow path and a second flow path for an exhaust gas flow, wherein the first and second flow path fluidly separated from a pre-muffler to a muffler extend and the first flow path via a controllable flap engine speed dependent continuously is closable, wherein the exhaust gas flow with the flap closed by the second flow path.
- the flap in the first flow path is closed, so that the exhaust flow from the pre-silencer through the second flow path of a flap unaffected and flows with optimum flow to the final muffler.
- a Maxiströmmasse and a flow rate of the exhaust gas is achieved, which ensures sufficient power and sufficient torque in the lower speed range.
- the noise level is sufficiently low that the legal requirements are met.
- a flow cross-sectional area of the first high-performance flow path is larger than a flow cross-sectional area of the second flow path.
- first and second flow paths between the front and rear muffler are separated from each other and arranged side by side.
- the first and second flow paths run coaxially in one another. wherein the second flow path surrounds the first flow path at a distance and the distance between the first and second flow paths forms the flow cross-sectional area of the second flow path.
- the flow paths are usually formed by tubes, so that the first flow path can be realized as an inner tube in a larger outer tube (second flow path). The distance between the outer wall of the inner tube and the inner wall of the outer tube determines the flow cross-sectional area of the second flow path. The inner diameter of the inner tube determines the flow cross-sectional area of the first flow path.
- the exhaust system includes the muffler into which the first and second flow paths extend, wherein in one embodiment of the invention the first flow path completely penetrates the muffler in the flow direction up to its outlet.
- the exhaust system thus runs in the range of high speeds directly through the first flow path to the outlet.
- the second flow path in the muffler ends in a chamber which provides a flow cross-sectional area that is suddenly increased in relation to the second flow path.
- the enlarged flow cross-sectional area is realized for example by a large-volume chamber in the muffler through which the exhaust gas of the second
- the inner tube extends to the outlet and is surrounded by the volume of the rear muffler, which increases significantly compared to the outer tube (second flow path).
- the end Muffler an area provided next to the first flow path, which provides the increase in volume in the form of a chamber.
- the exhaust system according to the invention is characterized in that the first flow path in the muffler is fluidly connected to the chamber.
- the first flow path is perforated or slotted formed within the muffler.
- the outer wall surface is provided with a plurality of holes or slots, so that the exhaust gas from the chamber in the muffler into the first flow path and out of the outlet flows out.
- the holes or slots are vorgeh Scientific in an embodiment of the invention over the entire peripheral surface, so that in the first flow path forming tube can flow over a designed for the effectiveness length in the muffler exhaust.
- the muffler in the flow direction by a partition member for example, a wall member is divided, wherein in an upstream first portion of the chamber and in a downstream, adjacent to the outlet second portion, an insulating means are provided and the Insulating means surrounds the first flow path.
- the insulation of the area adjacent to the outlet allows further shielding and defined reduction of noise.
- the size of the first and second sections can further affect the noise, with a favorable split being that the first section, in one particular embodiment, two-thirds and the second section, one third of the total length of the muffler.
- a means of insulation is a conventional insulating wool.
- the invention also includes an exhaust system in which two flow paths extend from the front silencer to two separate silencers in the flow direction and one of the two flow paths can be closed or throttled via the flap.
- the invention further protects a motorcycle with an exhaust gas system with any combination of the features shown above, as far as technically possible.
- FIG. 1 shows an exhaust system with parallel first and second flow paths connected to a pre-silencer;
- Figure 2 shows the continuation of the exhaust system of Figure 1 area of the muffler.
- Fig. 3 shows an alternative embodiment of the exhaust system with coaxial first and second flow path.
- FIG. 1 shows in a partially cutaway, perspective illustration of an exhaust system 1 in a first embodiment with separate parallel and first and second flow paths 3, 4 respectively formed as a tube.
- the second flow path 4 is through a thinner tube with respect to the tube of the first flow path 3 lower flow cross-sectional area formed.
- Both flow paths 3, 4 nonethelessre- From the front muffler 20 and end in the muffler 6 (see Figure 2).
- the first flow path 3 has in the interior a flap 5 which can be controlled in a conventional manner, by means of which the flow area of the first flow path 3 can be closed continuously depending on the engine speed and / or load.
- the flap 5 does not completely seal the first flow path 3, but the restriction is readily sufficient to account for the substantial portion of the exhaust gas flow through the second
- Flow path 4 is performed. Via holes 21 and / or a perforation of the outer walls, the two flow paths 3, 4 in the front silencer 20 are fluidly connected to each other.
- the pre-muffler 20 acts essentially as a reflection muffler. 2
- the first flow path 3 extends completely in the exhaust gas flow direction up to the outlet 7.
- the second flow path 4 terminates in a chamber 8 which provides a flow cross-sectional area which is abruptly enlarged compared to the second flow path 4.
- the rear muffler 6 has a diameter which is greater than the sum of the diameters of the first and second flow paths 3, 4 and the chamber 8 is formed by the space in the muffler 6, extending in extension of the second flow path 4 and around the first flow path 3 around. Furthermore, in the embodiment shown, the diameter widens toward the outlet 7.
- the second flow path 4 is flow-connected to the chamber 8 via a perforated full-scale formation of the first flow path 3 (pipe). After the sudden expansion of the exhaust gas of the second flow path 4 in the chamber 8, the exhaust gas flows over the Perforation in the first flow path 3 into and to the outlet 7.
- the muffler 6 is divided in the exhaust gas flow direction by a partition wall 9, so that an upstream first portion 10 and a downstream, adjacent to the outlet 7 second portion 1 1 is formed.
- the first section 10 is in the embodiment shown in FIG.
- insulating wool is provided, which surrounds the first flow path and reduces the noise at the outlet.
- the size of the chamber 8 can be determined via the position of the partition 9.
- FIG. 3 shows a second embodiment of the exhaust system 1 in a perspective view.
- the first and second flow paths 3, 4 are formed as coaxial tubes arranged inside each other, so that the second flow path 4 surrounds the first flow path 3 at a distance, and the distance between the first and second flow paths 3, 4 forms the flow cross-sectional area of the second flow path 4.
- the first and second flow paths 3, 4 are connected to the pre-silencer 20 as in the embodiment according to FIG. 1, the exhaust gas flow from the pre-silencer 20 being supplied to both flow paths 3, 4 depending on the position of the flap 5.
- the flow area of the first flow path 3 can be closed by means of the flap 5 as in FIG. 1.
- the exhaust gas flows essentially exclusively via the second flow path 4 into the silencer 6, in which the chamber 8 adjoins the second flow path 4. closes.
- End muffler 6 is identical to Figure 2, only the tubes of the flow paths 3, 4 are not side by side, but coaxially into each other.
- an absorption silencer can be used as end silencer or the two individual paths end in two separate end silencers, so that, for example, the power path is on the left side and the acoustic path on the right side of the motorcycle.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014209313.9A DE102014209313A1 (en) | 2014-05-16 | 2014-05-16 | Exhaust system with variable exhaust gas paths |
PCT/EP2015/055305 WO2015172910A1 (en) | 2014-05-16 | 2015-03-13 | Exhaust system having variable exhaust gas paths |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3143263A1 true EP3143263A1 (en) | 2017-03-22 |
EP3143263B1 EP3143263B1 (en) | 2019-02-27 |
Family
ID=52682730
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15709936.7A Active EP3143263B1 (en) | 2014-05-16 | 2015-03-13 | Exhaust system having variable exhaust gas paths |
Country Status (5)
Country | Link |
---|---|
US (1) | US10221737B2 (en) |
EP (1) | EP3143263B1 (en) |
CN (1) | CN105980678B (en) |
DE (1) | DE102014209313A1 (en) |
WO (1) | WO2015172910A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107489507A (en) * | 2016-12-26 | 2017-12-19 | 宝沃汽车(中国)有限公司 | The gas extraction system and automobile of automobile |
CN106762241A (en) * | 2017-01-09 | 2017-05-31 | 浙江吉利控股集团有限公司 | A kind of engine exhaust-gas recirculating system |
CN113374568B (en) * | 2021-07-19 | 2024-03-26 | 无锡威孚力达催化净化器有限责任公司 | Air inlet connection structure of rear-stage muffler |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4913260A (en) * | 1988-01-11 | 1990-04-03 | Tenneco Inc. | Gas silencing system with controlling sound attenuation |
IT1250822B (en) * | 1991-07-26 | 1995-04-21 | Ferrari Spa | COMBUSTION GAS DISCHARGE EQUIPMENT ASSOCIATED WITH AN ENDOTHERMAL MOTOR OF A VEHICLE. |
JPH0742852B2 (en) * | 1992-12-04 | 1995-05-15 | 義明 角田 | Muffler with scavenging promotion effect |
US5614699A (en) * | 1994-05-09 | 1997-03-25 | Nissan Motor Co., Ltd. | Automobile exhaust noise suppressor |
US6598390B2 (en) * | 2001-12-26 | 2003-07-29 | Liang Fei Industry Co. Ltd. | Easily controlled exhaust pipe |
CN2514120Y (en) * | 2001-12-27 | 2002-10-02 | 良飞工业有限公司 | Improved structure exhaust pipe |
DE10231056A1 (en) * | 2002-07-10 | 2004-02-05 | J. Eberspächer GmbH & Co. KG | exhaust system |
US7347045B2 (en) | 2004-06-30 | 2008-03-25 | Harley-Davidson Motor Company Group, Inc. | Motorcycle dynamic exhaust system |
DE102005003582A1 (en) | 2005-01-26 | 2006-08-03 | Dr.Ing.H.C. F. Porsche Ag | Silencer for an exhaust system |
US7337609B2 (en) * | 2006-05-11 | 2008-03-04 | Gm Global Technology Operations, Inc. | Diesel exhaust system variable backpressure muffler |
CN1858412A (en) * | 2006-06-02 | 2006-11-08 | 河南天瑞环保新材料有限公司 | Internal combustion engine exhaust silencer with variable exhaust pipe cross section |
JP4919864B2 (en) * | 2007-03-30 | 2012-04-18 | 本田技研工業株式会社 | Exhaust system for saddle-ride type vehicles |
DE202010012100U1 (en) * | 2010-09-02 | 2011-02-10 | The Jekill & Hyde Company B.V. | Exhaust, damper housing and motorized vehicle |
CN202417671U (en) * | 2012-01-19 | 2012-09-05 | 粱志强 | Exhaust pipe with variable built-in valve resistance |
JP2014234735A (en) * | 2013-05-31 | 2014-12-15 | ヤマハ発動機株式会社 | Motorcycle |
-
2014
- 2014-05-16 DE DE102014209313.9A patent/DE102014209313A1/en active Pending
-
2015
- 2015-03-13 EP EP15709936.7A patent/EP3143263B1/en active Active
- 2015-03-13 CN CN201580008091.6A patent/CN105980678B/en active Active
- 2015-03-13 WO PCT/EP2015/055305 patent/WO2015172910A1/en active Application Filing
-
2016
- 2016-11-15 US US15/351,493 patent/US10221737B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
US10221737B2 (en) | 2019-03-05 |
EP3143263B1 (en) | 2019-02-27 |
US20170058732A1 (en) | 2017-03-02 |
DE102014209313A1 (en) | 2015-11-19 |
CN105980678A (en) | 2016-09-28 |
WO2015172910A1 (en) | 2015-11-19 |
CN105980678B (en) | 2019-06-21 |
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