WO2012050488A1 - Agencement de tuyau d'échappement pour évacuer les gaz d'échappement d'un moteur à combustion - Google Patents

Agencement de tuyau d'échappement pour évacuer les gaz d'échappement d'un moteur à combustion Download PDF

Info

Publication number
WO2012050488A1
WO2012050488A1 PCT/SE2010/000248 SE2010000248W WO2012050488A1 WO 2012050488 A1 WO2012050488 A1 WO 2012050488A1 SE 2010000248 W SE2010000248 W SE 2010000248W WO 2012050488 A1 WO2012050488 A1 WO 2012050488A1
Authority
WO
WIPO (PCT)
Prior art keywords
exhaust pipe
pipe arrangement
arrangement according
diffuser section
section
Prior art date
Application number
PCT/SE2010/000248
Other languages
English (en)
Inventor
Didier Molard
Nathanael Crut
Erik Hastad
Original Assignee
Volvo Lastvagnar Ab
Renault Trucks
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 Volvo Lastvagnar Ab, Renault Trucks filed Critical Volvo Lastvagnar Ab
Priority to US13/879,410 priority Critical patent/US20140305109A1/en
Priority to PCT/SE2010/000248 priority patent/WO2012050488A1/fr
Publication of WO2012050488A1 publication Critical patent/WO2012050488A1/fr

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
    • 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
    • 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
    • F01N13/20—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 flared outlets, e.g. of fish-tail shape
    • 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
    • F01N2240/20—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 a flow director or deflector
    • 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
    • F01N2270/00—Mixing air with exhaust gases
    • F01N2270/02—Mixing air with exhaust gases for cooling exhaust gases or the apparatus

Definitions

  • the invention relates to an exhaust pipe arrangement for discharging exhaust from a combustion engine provided with an exhaust pipe and a vehicle comprising an exhaust pipe arrangement.
  • soot is a by-product of the diesel combustion and emitted with the exhaust.
  • soot is collected in diesel particle filters in the vehicle's exhaust
  • US 2008/0072582 A1 discloses an exhaust gas cooler which is connected to the rearward edge of the exhaust pipe.
  • the exhaust gas cooler includes a cylindrically shaped housing and has an open forward edge, an open rearward edge and an internal diameter that is larger than the external diameter of the exhaust pipe.
  • a cooler support is attached to and supporting the cooler housing such that the rearward edge of the exhaust pipe is located within the cooler housing between the forward and rearward edges of the cooler housing.
  • Ambient air entering through the rearward edge of the cooler housing is mixed with hot exhaust gases to cool the exhaust gases.
  • the cooler housing includes a vane assembly placed in front of the rearward edge of the exhaust pipe.
  • Another object is to provide a vehicle comprising such an exhaust pipe
  • An exhaust pipe arrangement for discharging exhaust from a combustion engine through an exhaust pipe, particularly for a combustion engine with an exhaust gas aftertreatment system requiring high temperatures in one or more operational modes, comprising an end section terminated by an exhaust gas outlet.
  • a diffuser section is provided in the exhaust pipe, the diffuser section having a first end at a distance from the outlet and a second end closer to the outlet is arranged in vicinity of the outlet, wherein at least one vane with an airfoil profile extends in an axial direction from the first end to the second end of the diffuser section.
  • the diffuser section is arranged inside the cross section of the exhaust pipe so that the external contour or diameter of the exhaust pipe is not increased.
  • the diffuser section is exposed to direct flow of exhaust gases in the exhaust pipe.
  • the external exhaust pipe contour or diameter of a pipe section upstream of and adjacent to the diffuser section is substantially the same as along the diffuser section.
  • the exhaust pipe can be a cylindrical tube with constant diameter.
  • an extension of a plume of hot exhaust gases is shorter than for conventional exhaust pipes. It is not necessary to mix ambient air to the hot exhaust gas, thus avoiding noise problems caused by suction of air into the exhaust pipe upstream of the diffuser section.
  • the arrangement has a low weight and is cost efficient.
  • the diffuser section does not require an additional length of the exhaust pipe and can be fitted in existing exhaust pipe layouts.
  • the exhaust pipe arrangement is applicable even for vehicles with a short wheelbase where there is no room for a tailpipe muffler.
  • the at least one vane can be an insert mounted inside the exhaust pipe as a separate diffuser element, or one or more vanes can be mounted separately to the inside wall of the exhaust pipe, and/or formed by the wall of the exhaust pipe.
  • the at least one vane in a front view on a cross section of the exhaust pipe at a location of the first end and/or second end of the diffuser section the at least one vane may cover at least 25%, preferably at least 30% of the cross sectional area of the diffuser section.
  • the number of vanes may be adapted to the cross sectional area actually covered by the one or more vanes.
  • the at least one vane may have an airfoil design which smoothly deflects the exhaust gas flow thus avoiding additional noise generation. In one embodiment it is of advantage to have many but rather short vanes.
  • a free space may be provided in a central region of the diffuser section provided for a passage of exhaust gas.
  • the free space has a diameter of not more than 60%, preferably of not more than 50%, more preferably of not more than 30 %, more preferably of not more than 20% of a diameter of the diffuser section.
  • the at least one vane, seen from top may be arranged in a ring section with an outer diameter of at least 40%, preferably at least 50%, more preferably at least 60%, of a diameter of the diffuser section of the exhaust pipe.
  • a sufficient disturbance can be introduced into the exhaust gas flow to reduce the extension of very hot exhaust gases in the exhaust gas plume.
  • an orientation of an outer edge of the at least one vane may deviate by at least 5° from the first end to the second end of the diffuser section, preferably by at least 10°.
  • a smooth deflection of the exhaust gas flow can be provoked in the exhaust gas flow.
  • an orientation of the outer edge of the at least one vane may deviate by not more than 90°, preferably by not more than 80° from the first end to the second end of the diffuser section.
  • a section of an outer edge of the at least one vane may extend parallel to an axial direction at the first end.
  • An airfoil profile can be provided which reduces noise generation in the deflected exhaust gas flow.
  • a distance from the first end to the second end of the diffuser section may be at least 40%, preferably at least 50% of the diameter of the diffuser section.
  • a distance between the first end and the second end of the diffuser section may be larger than the diameter of the diffuser section.
  • At least three vanes are provided, wherein the at least three vanes may preferably be arranged symmetrically around a central axis of the diffuser section.
  • the design is simple and can be manufactured cost efficiently.
  • a diffuser element may be arranged in the diffuser section which diffuser element may comprise the at least one vane and that the diffuser element is surrounded by a wall of the exhaust pipe.
  • the diffuser element can be made of one or more bent metai blades forming the vanes, the vanes being arranged in rotational symmetry around a centre axis, particularly around a centre piece made of a tube.
  • the blades are shaped in a way to smoothly redirect or deflect the exhaust gas flow from its straight path, thus minimizing noise which may be caused by a sudden flow redirection or deflection.
  • the contour of the vanes avoids sudden redirection or deflection of the exhaust gas flow.
  • the tube may have a cylindrical shape.
  • the tube may have a conical shape with a smaller diameter at the first end at a distance the outlet and a larger diameter at the second end of the diffuser section close to the outlet.
  • the diffuser element can be mounted in the exhaust pipe just before the outlet where it disturbs the exhaust gas flow by deflecting or redirecting the exhaust gas flow, and as a result reduces a distance that the hot exhaust gases travel through the air outside the exhaust pipe. Outside the exhaust pipe the disturbed exhaust gas flow can also mix efficiently with the ambient air.
  • the outlet of the exhaust pipe may have recesses at its free end where material of the pipe rim is removed. This arrangement can help to direct the exhaust plume so that it is inclined somewhat with respect to the straight extension of the exhaust pipe at the outlet.
  • the at least one vane may be formed by a wall portion of the exhaust pipe.
  • the at least one vane can be formed by many techniques such as deep drawing, blow forming and the like.
  • the diffuser section may abut at least one section of the outlet contour. The effect of the diffuser section on the exhaust gas flow is stronger close to the exhaust pipe outlet.
  • a vehicle comprising an exhaust pipe arrangement comprising anyone of the features described above.
  • the vehicle has improved safety as the hot exhaust gases emitted during particle filter regeneration can be concentrated closer to the exhaust pipe outlet than in conventional systems.
  • FIG. 1 a-1 b a perspective view on an example embodiment of an exhaust pipe arrangement according to the invention (Fig. 1a), and in a side view the effect of the exhaust pipe arrangement on a temperature distribution of exhaust gases emitted from the exhaust pipe by way of an isothermal surface (Fig. 1b);
  • Fig. 2a-2b a perspective view on an example embodiment of a conventional exhaust pipe arrangement (Fig. 2a), and in a side view a temperature distribution of exhaust gases emitted from the exhaust pipe by way of an ISO surface (Fig. 2b);
  • FIG. 3a, 3b in a side view position of an example embodiment of a diffuser
  • FIG. 3a details of the geometry of the diffuser element shown in Fig. 3a, 3b;
  • Fig. 5a-5c various geometries of diffuser elements
  • Fig. 6 an example embodiment of a vehicle comprising an exhaust pipe arrangement according to the invention.
  • Fig. 1a depicts schematically an example embodiment of an exhaust pipe arrangement 50 in an exhaust pipe 10 shown in a region close to its end section 16.
  • the exhaust pipe 10 is provided for discharging exhaust from a combustion engine (not shown), particularly for a combustion engine with an exhaust gas aftertreatment system requiring high temperatures in one or more operational modes.
  • Such operational modes may be regeneration of a component in the exhaust gas aftertreatment system, by way of example a particle filter of a diesel engine.
  • the exhaust pipe 10 has an outer wall 40 and a main section 12 which extends towards the exhaust gas aftertreatment system.
  • the end section 16 of the exhaust pipe 10 is terminated by an exhaust gas outlet 18, wherein a diffuser section 20 is arranged in the exhaust pipe 10 in the vicinity of the exhaust gas outlet 18.
  • the exhaust pipe 10 may exhibit a bend 14, typically in cases where the exhaust pipe 10 is vertically arranged and the exhaust gas outlet 18 is an overhead outlet.
  • the exhaust gas outlet 18 is inclined with respect to a longitudinal extension of the exhaust pipe 10 having a section 18a with the shortest longitudinal extension.
  • the end section 16 comprises a diffuser section 20 with an outer diameter 0_d.
  • the diffuser section 20 in this embodiment is a diffuser element 00 arranged in the exhaust pipe 10 as an insert.
  • the diffuser section 20 abuts the section 18a with its upper end.
  • the diffuser section 20 deflects the exhaust gas flow in a way that hot exhaust gas is concentrated predominantly close to the exhaust outlet 18. This is shown in Fig. 1b which depicts an isothermal surface of an exhaust temperature T_ex of e.g. 250°C.
  • the isothermal surface is of irregular shape and encloses a volume 30 which has a longitudinal extension L30. Inside the volume 30 the temperature is higher than T_ex, outside the volume 30, the temperature is lower than T_ex.
  • Fig. 2a and 2b show a conventional exhaust pipe 10 without diffuser section 20.
  • the volume 30 enclosed by the isothermal surface 30 has a cylindrical shape.
  • the longitudinal extension L30 of the volume 30 is more than double the longitudinal extension L30 shown in Fig. 1b for an exhaust pipe 10 comprising a diffuser section 20 according to the invention.
  • Figs. 3a and 3b show an example embodiment of a diffuser element 100 which may be inserted in the exhaust pipe 10 to provide a diffuser section 20 of the exhaust pipe 10.
  • Fig. 4 shows the diffuser element 100 in detail.
  • Fig. 3a, 3b illustrate in a side view position the diffuser element 100 located in the exhaust pipe 10 (Fig. 3a) and the effect of the diffuser element 100 on an exhaust gas flow F in the exhaust pipe 10 (Fig. 3b).
  • the exhaust pipe 10 is illustrated only as contour line.
  • a first end 102 of the diffuser element 100 is arranged in a distance from the exhaust gas outlet 18 and a second end 104 closer to the exhaust gas outlet 18 in vicinity of the exhaust gas outlet 18, abutting section 18a.
  • a distance L100 from the first end 102 to the second end 104 of the diffuser section 20 (or diffuser element 100 in this embodiment) is at least 40%, preferably at least 50% of the diameter 0_d of the diffuser section 20.
  • the distance L100 between the first end 102 and the second end 104 is larger than the diameter 0 d of the diffuser section 20.
  • the diffuser element 100 comprises several vanes 110 with an airfoil profile 112 extend in an axial direction 130 from the first end 102 to the second end 104 of the diffuser section 20.
  • the airfoil profile 112 avoids sudden redirections of the exhaust gas flow and thus reduces the risk of disturbing noise creation. As can be seen in Fig. 3b, the exhaust gas flow F is disturbed by the diffuser element 100 and smoothly deflected by the vanes 110.
  • Each vane 110 has an edge 106 which at its lower section 114 at the first end 102 of the vane 110 starts parallel to the longitudinal extension 130 of the diffuser section 20.
  • the upper section 116 is angled with an angle a with respect to the lower section 114 of the edge 106, wherein the vane 110 follows the airfoil profile 112.
  • the angle a is at least 5°, preferably at least 10° and not larger than 90°, preferably by not larger than 80°.
  • the diffuser element 100 can be made of one or more bent metal blades forming the vanes 110 and in a central region 120 a centre piece made of a tube forming a free space 122 provided for a passage of exhaust gas.
  • the blades are shaped in a way so that they smoothly redirect the exhaust gas flow F, thus minimizing noise.
  • the diffuser element 100 is shown to be mounted in a fixed manner to the exhaust pipe 10 it is not excluded that the diffuser element 100 can be mounted rotatably in the exhaust pipe 10 (not shown).
  • Example embodiments shown in Fig. 5a to Fig. 5c illustrate expedient variants of the geometry of a diffuser element 100. In order to avoid unnecessary repetitions, a focus is only on the differences between the various embodiments.
  • Fig. 5a shows an embodiment where five vanes 110 of the diffuser element 100 are attached to an inside of a wall 40 of an exhaust pipe 0, forming a diffuser section 20 of the exhaust pipe 10.
  • the vanes 110 surround a free space 122 in the centre of the exhaust pipe cross section. Seen from the top the vanes 110 are arranged in a ring section.
  • Fig. 5b shows an embodiment of a diffuser element 100 where a free space 122 surrounded by five vanes 110 is defined by a tube in the central region 120 of a diffuser section 20 of an exhaust pipe 10. Seen from top, the vanes 110 are arranged in a ring section.
  • the outer diameter 0 2 of the ring section arrangement of the vanes 110 in Fig. 5b is smaller than in Fig. 5a.
  • the outer diameter 0_2 of the ring section is at least 40%, preferably at least 50%, more preferably at least 60%, of a diameter 0_d of the diffuser section 20.
  • the outer diameter 0_2 of the ring section equals an inner diameter 0_d of the exhaust pipe 0 and the diffuser section 20, respectively.
  • the free space 122 surrounded by the vanes 110 has a diameter 0_2 of not more than 30%, preferably of not more than 25 %, more preferably of not more than 20% of the diameter of the diffuser section 20.
  • Fig. 5c depicts an embodiment of a diffuser element 100 with three vanes 110 arranged in an exhaust pipe 10.
  • a projection of the vanes 110 on the cross section of the diffuser section 20 covers at least 25%, preferably at least 30% of the cross sectional area of the diffuser section 20.
  • At least three vanes 110 are provided, wherein the at least three vanes 110 are preferably arranged symmetrically around a central axis 124 of the diffuser section 20.
  • the diffuser section 20 is formed by a diffuser element 100 inserted in the exhaust pipe 10 and the respective section of the exhaust pipe 10, it is to be understood, that at least one vane 110 may also be formed by a wall portion of the wall 40 the exhaust pipe 10 (not shown).
  • Fig. 6 illustrates a vehicle 200 comprising an exhaust pipe arrangement 50 as described in the preceding figures.
  • Exhaust gas from an engine 202 is treated in an exhaust gas aftertreatment system 204 and discharged through an exhaust pipe with an overhead exhaust gas outlet 8.
  • the hot exhaust gases generated during regeneration of components of the exhaust gas aftertreatment system 204, particularly during regeneration of a diesel particle filter, are concentrated near the exhaust gas outlet 18 so that objects 210 in the vicinity of the exhaust gas outlet 18 is exposed to cooler exhaust gases only which reduces the danger of damage to the objects 210.

Landscapes

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

Abstract

L'invention concerne un agencement de tuyau d'échappement (50) pour évacuer les gaz d'échappement d'un moteur à combustion (202) par un tuyau d'échappement (10), en particulier pour un moteur à combustion (202) équipé d'un système de post-traitement (204) des gaz d'échappement exigeant des températures élevées dans un ou plusieurs modes de fonctionnement, comprenant une section finale (16) terminée par une sortie de gaz d'échappement (18). Une section de diffuseur (20) est située dans le tuyau d'échappement (10), la section de diffuseur (20) comportant une première extrémité (102) à une certaine distance de la sortie (18), et une seconde extrémité (104) plus proche de la sortie (18), située au voisinage de la sortie (18), au moins une aube (110) avec un profil aérodynamique (112) s'étendant dans une direction axiale (130) de la première extrémité (102) à la seconde extrémité (104) de la section de diffuseur (20).
PCT/SE2010/000248 2010-10-15 2010-10-15 Agencement de tuyau d'échappement pour évacuer les gaz d'échappement d'un moteur à combustion WO2012050488A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US13/879,410 US20140305109A1 (en) 2010-10-15 2010-10-15 Exhaust pipe arrangement for discharging exhaust from a combustion engine
PCT/SE2010/000248 WO2012050488A1 (fr) 2010-10-15 2010-10-15 Agencement de tuyau d'échappement pour évacuer les gaz d'échappement d'un moteur à combustion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SE2010/000248 WO2012050488A1 (fr) 2010-10-15 2010-10-15 Agencement de tuyau d'échappement pour évacuer les gaz d'échappement d'un moteur à combustion

Publications (1)

Publication Number Publication Date
WO2012050488A1 true WO2012050488A1 (fr) 2012-04-19

Family

ID=45938515

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2010/000248 WO2012050488A1 (fr) 2010-10-15 2010-10-15 Agencement de tuyau d'échappement pour évacuer les gaz d'échappement d'un moteur à combustion

Country Status (2)

Country Link
US (1) US20140305109A1 (fr)
WO (1) WO2012050488A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106640285A (zh) * 2016-12-06 2017-05-10 济南吉美乐电源技术有限公司 一种内燃机电站排气混流降温红外隐身装置
CN106870091A (zh) * 2017-03-28 2017-06-20 广西柳州方益建筑工程有限公司 一种废气利用的排气管

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7130504B2 (ja) * 2018-09-12 2022-09-07 肇 行田 マフラーカッター及びマフラーカッターの製造方法
JP7507681B2 (ja) * 2020-12-25 2024-06-28 株式会社クボタ 排気ガス拡散装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0814041A (ja) * 1994-06-23 1996-01-16 Yutani Heavy Ind Ltd 排気管の構造
JP2000008832A (ja) * 1998-06-23 2000-01-11 Kawasaki Heavy Ind Ltd 小型汎用エンジンのマフラ
JP2005226485A (ja) * 2004-02-10 2005-08-25 Calsonic Kansei Corp 車両用排気系におけるテールパイプ構造

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4174789B2 (ja) * 2002-02-12 2008-11-05 株式会社マツ・ショウ マフラーカッター
US6745562B2 (en) * 2002-09-16 2004-06-08 Kleenair Systems, Inc. Diverter for catalytic converter
US7131514B2 (en) * 2003-08-25 2006-11-07 Ford Global Technologies, Llc Noise attenuation device for a vehicle exhaust system
ATE546616T1 (de) * 2007-12-18 2012-03-15 Mack Trucks Abgasdiffusor für einen lastwagen
KR101026190B1 (ko) * 2009-01-23 2011-03-31 볼보 컨스트럭션 이큅먼트 에이비 엔진룸의 과열가스 온도 저감장치

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0814041A (ja) * 1994-06-23 1996-01-16 Yutani Heavy Ind Ltd 排気管の構造
JP2000008832A (ja) * 1998-06-23 2000-01-11 Kawasaki Heavy Ind Ltd 小型汎用エンジンのマフラ
JP2005226485A (ja) * 2004-02-10 2005-08-25 Calsonic Kansei Corp 車両用排気系におけるテールパイプ構造

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106640285A (zh) * 2016-12-06 2017-05-10 济南吉美乐电源技术有限公司 一种内燃机电站排气混流降温红外隐身装置
CN106870091A (zh) * 2017-03-28 2017-06-20 广西柳州方益建筑工程有限公司 一种废气利用的排气管

Also Published As

Publication number Publication date
US20140305109A1 (en) 2014-10-16

Similar Documents

Publication Publication Date Title
US7207172B2 (en) Method for ventilating a working machine, and such a working machine
US7331422B2 (en) Vortex muffler
US7552797B2 (en) Vehicular exhaust system
KR101942753B1 (ko) 자동차 내연기관의 와류발생기
US20130239557A1 (en) Apparatus for removing exhaust gas pressure and preventing backflow of exhaust gas
US20120145268A1 (en) Exhaust Ejector For An Internal Combustion Engine
CN107035467B (zh) 发动机的***
US20140305109A1 (en) Exhaust pipe arrangement for discharging exhaust from a combustion engine
JP6308053B2 (ja) 内燃機関の排気ガス還流装置
US20120222643A1 (en) Swirl guiding acoustic device with an internal coaxially integrated swirl guide structure
US20090090101A1 (en) Exhaust Gas-Discharging Device of Vehicle
CN109869346B (zh) 压缩机壳体
CN1982662B (zh) 排气***
US20200088077A1 (en) Silencer for an exhaust gas system of a motor vehicle and motor vehicle with a silencer
CN117460881A (zh) 用于车辆排气***的表面部件
EP3816418B1 (fr) Système d'échappement pour moteur, moteur et véhicule
CN108331686B (zh) 内燃机的进气装置
CN109252921A (zh) 箱式尾气后处理***
WO2017116326A1 (fr) Dispositif de dilution et de dispersion d'échappement de véhicule structurellement amélioré
CN107208531A (zh) 吸气整流装置和具备该吸气整流装置的压缩机
JP6929271B2 (ja) 排気ガスの排出を促進する自動車用排気ガス排出誘導装置
EP3483404B1 (fr) Convertisseur catalytique et la dérivation de turbocompresseur
US11732633B2 (en) Exhaust discharge system
KR200477327Y1 (ko) 차량용 배기 장치
CN114174097B (zh) 工业车辆

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10858466

Country of ref document: EP

Kind code of ref document: A1

DPE1 Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101)
NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 13879410

Country of ref document: US

122 Ep: pct application non-entry in european phase

Ref document number: 10858466

Country of ref document: EP

Kind code of ref document: A1