WO2002084083A1 - Silencieux pour automobile - Google Patents

Silencieux pour automobile Download PDF

Info

Publication number
WO2002084083A1
WO2002084083A1 PCT/KR2002/000641 KR0200641W WO02084083A1 WO 2002084083 A1 WO2002084083 A1 WO 2002084083A1 KR 0200641 W KR0200641 W KR 0200641W WO 02084083 A1 WO02084083 A1 WO 02084083A1
Authority
WO
WIPO (PCT)
Prior art keywords
exhaust gas
pipe portion
muffler
funnel
tail pipe
Prior art date
Application number
PCT/KR2002/000641
Other languages
English (en)
Inventor
Soo-Weon Kim
Original Assignee
Soo-Weon Kim
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
Priority claimed from KR2020010010194U external-priority patent/KR200237021Y1/ko
Priority claimed from KR10-2002-0013963A external-priority patent/KR100464711B1/ko
Application filed by Soo-Weon Kim filed Critical Soo-Weon Kim
Publication of WO2002084083A1 publication Critical patent/WO2002084083A1/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
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F01N13/082—Other arrangements or adaptations of exhaust conduits of tailpipe, e.g. with means for mixing air with exhaust for exhaust cooling, dilution or evacuation
    • 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
    • F01N1/003—Silencing apparatus characterised by method of silencing by using dead chambers communicating with gas flow passages
    • 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
    • F01N1/084—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling the gases flowing through the silencer two or more times longitudinally in opposite directions, e.g. using parallel or concentric tubes
    • 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
    • F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/06—Exhaust treating devices having provisions not otherwise provided for for improving exhaust evacuation or circulation, or reducing back-pressure
    • 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
    • F01N2270/08—Mixing air with exhaust gases for evacuation of exhaust gases, e.g. in tail-pipes

Definitions

  • the present invention relates to an exhaust system used in an internal combustion engine of a motor vehicle to accelerate discharge of exhaust gas, and more particularly, the present invention relates to an exhaust system for a motor vehicle, adapted to be applied to or operatively associated with a muffler arranged in an exhaust gas discharge path, and comprising a discharge acceleration pipe which is flared at one end thereof and thereby induces inflow of outside air into a tail pipe of the muffler, with an air inflow rate varying depending upon a speed of the motor vehicle, to accelerate discharge of exhaust gas and thereby improve fuel economy.
  • a motor vehicle having an internal combustion engine obtains power through 4 strokes, that is, intake, compression, expansion and exhaust strokes.
  • intake air flows into a cylinder through an air cleaner, a throttle valve, etc., without undergoing significant resistance.
  • exhaust stroke as exhaust gas flows through an exhaust manifold, an exhaust cleaner utili2_ng catalysts, a muffler, etc. into a tail pipe and is then discharged to the outside, the exhaust gas undergoes significant resistance.
  • the muffler must be necessarily provided to deaden noise of exhaust gas.
  • the muffler is generally designed to have a volumetric capacity which is 15-20 times as large as a displacement of the motor vehicle. In the muffler, smooth discharge of exhaust gas is hindered due to air resistance, and thereby output of the engine is decreased by 5 ⁇ 10%.
  • Korean Patent Laid-open Publication No. 2000-56951 discloses a vehicle exhaust canister.
  • the vehicle exhaust canister has streamlined outer surfaces for promoting smooth airflow during travel of a motor vehicle.
  • the vehicle exhaust canister is coupled to a tail pipe in a manner such that low-pressure regions can be created as air flows along the streamlined outer surfaces of the exhaust canister.
  • the attachment of the streamlined exhaust canister to the motor vehicle increases structural complexity and requires an additional space. Also, while the motor vehicle is stopped or travels at a low speed, since it is impossible to induce a substantial amount of airflow on the streamlined outer surfaces of the exhaust canister, discharge of exhaust gas is hindered due to narrow discharge openings defined through the streamlined exhaust canister.
  • Korean Patent Laid-open Publication No. 1998-75223 discloses a tail pipe for a main silencer, having a vortex flow generating device.
  • a vortex flow generating impeller is disposed in the middle of the tail pipe in a manner such that the impeller can be rotated by exhaust gas to generate vortex flow and thereby facilitate discharge of exhaust gas.
  • the vortex flow generating impeller produces resistance acting against flow of exhaust gas, practicality of the vortex flow generating impeller is deteriorated.
  • Korean Utility Model Publication No, 1996-4888 discloses an exhaust gas discharging device for a motor vehicle.
  • a separate pipe is connected to a rear end of a tail pipe by means of bolts, and a plurality of vortex flow generating elements are secured to a circumferential inner surface of the separate pipe, so that vortex flow is generated in exhaust gas to improve discharge efficiency.
  • the simple generation of the vortex flow in exhaust gas is insufficient to ensure rapid and smooth discharge of exhaust gas. Therefore, apart from natural discharge of exhaust gas by its pressure, since the generated vortex flow only partially aids discharge of exhaust gas, a significant increase in discharge efficiency cannot be accomplished.
  • a muffler 4 is arranged in an exhaust gas discharge path.
  • a sub duct 8 is connected to an exhaust pipe 2 forward of the muffler 4.
  • the sub duct 8 has installed therein a valve 9 for adjusting an air flow rate in conformity with a degree to which a throttle valve is opened.
  • a vortex flow generating duct 5 having a vane 7 for ' generating vortex flow is connected to the sub duct 8. Outside air can flow into the exhaust pipe 2 through the vortex flow generating duct 5 and the sub duct 8.
  • this conventional device suffers from defects in that, since the vortex flow generating duct 5 into which outside air flows is connected via the sub duct 8 to the exhaust pipe 2 forward of the muffler 4, noise of exhaust gas leaks to the outside through the ducts 5 and 8, and severe noise pollution is generated. In this regard, upon accelerating a speed of a motor vehicle, as the valve 9 is further opened, noise is generated to an increased degree. Also, because exhaust gas can be discharged to the outside through the ducts 5 and 8 which have less air resistance than the inside of the muffler 4, outside air cannot properly flow into the ducts 5 and 8, by which practicality of the conventional device is deteriorated.
  • an object of the present invention is to provide an exhaust system for a motor vehicle, which induces inflow of outside air into a tail pipe of a muffler to allow the outside air to be discharged along with exhaust gas to thereby accelerate discharge of exhaust gas.
  • Another object of the present invention is to provide an exhaust system for a motor vehicle, which ensures rapid discharge of exhaust gas and avoids a valve overlap, thereby preventing backflow of exhaust gas into a cylinder and enhancing output of an engine.
  • Still another object of the present invention is to provide an exhaust system for a motor vehicle, which is rigidly structured to improve durability and can be applied to existing mufflers without requiring modification of the existing mufflers, thereby achieving compatibility with a diversity of mufflers.
  • Yet still another object of the present invention is to provide an exhaust system for a motor vehicle, which is configured to allow inflow of outside air to be directed at a high flow velocity to a point adjacent to an exit of an exhaust gas discharge path, thereby preventing noise from leaking to the outside and foreign matters contained in the outside air from accumulating in a muffler.
  • an exhaust system for a motor vehicle adapted to be applied to or operatively associated with a muffler arranged in an exhaust gas discharge path to accelerate discharge of exhaust gas, comprising: a funnel-shaped pipe portion flared toward a front end of the motor vehicle and communicated with a rear portion of the exhaust gas discharge path in a manner such that outside air collected in the funnel-shaped pipe portion is mixed with exhaust gas passing through the muffler and flowing through the exhaust gas discharge path to rapidly discharge exhaust gas.
  • FIG. 1 is a perspective view illustrating a conventional exhaust device for inducing inflow of outside air into a muffler
  • FIG. 2 is a cross-sectional view illustrating an exhaust system for a motor vehicle in accordance with a first embodiment of the present invention, which is applied to a muffler
  • FIG. 3 is a cross-sectional view illustrating an exhaust system for a motor vehicle in accordance with a second embodiment of the present invention, which is applied to a muffler;
  • FIG. 4 is a cross-sectional view illustrating an exhaust system for a motor vehicle in accordance with a third embodiment of the present invention, which is operatively associated with a muffler;
  • FIG. 5 is a cross-sectional view illustrating an exhaust system for a motor vehicle in accordance with a fourth embodiment of the present invention, which is operatively associated with a muffler;
  • FIG. 6 is a cross-sectional view illustrating an exhaust system for a motor vehicle in accordance with a fifth embodiment of the present invention, which is operatively associated with a muffler;
  • FIG. 7 is a cross-sectional view illustrating an exhaust system for a motor vehicle in accordance with a sixth embodiment of the present invention, which is operatively associated with a muffler;
  • FIG. 8 is a cross-sectional view illustrating an exhaust system for a motor vehicle in accordance with a seventh embodiment of the present invention;
  • FIG. 9 is a front view illustrating the exhaust system of FIG. 8.
  • FIG. 2 is a cross-sectional view illustrating an exhaust system for a motor vehicle in accordance with a first embodiment of the present invention, which is applied to a muffler.
  • the muffler 10 is arranged in a path through which exhaust gas is discharged from an engine of the motor vehicle.
  • the exhaust system comprises a funnel-shaped pipe portion 30 and an extended pipe portion 32.
  • the funnel-shaped pipe portion 30 is flared toward a front end of the motor vehicle and communicated with a rear end of an exhaust gas discharge path.
  • the extended pipe portion 32 is integrally connected to the funnel-shaped pipe portion 30 and passes through the muffler 10 to communicate the funnel-shaped pipe portion 30 with a tail pipe 20 connected to an exit of the muffler 10. Outside air collected in the funnel-shaped pipe portion 30 is mixed with exhaust gas which has passed through the muffler 10 and flows through the exhaust gas discharge path, to rapidly discharge exhaust gas.
  • a plurality of fastening brackets 34 are attached to a circumferential inner surface of the tail pipe 20 to fixedly maintain the extended pipe portion 32.
  • the funnel-shaped pipe portion 30 is welded to a side wall of the muffler 10 in a manner such that the extended pipe portion 32 extends through the side wall of the muffler 10. Since the extended pipe portion 32 is welded to the fastening brackets 34 which are spaced apart one from another in a lengthwise direction of the tail pipe 20, operation noise is not generated while the motor vehicle travels and vibrates on a road. In this way, the exhaust system has a rigid structure and improved durability.
  • noise is primarily removed in a first expansion room which is defined at a rear end of the muffler 10.
  • a certain amount of exhaust gas passes into a second expansion room through a plurality of first air holes 12 defined in an inlet pipe, by which noise of exhaust gas is secondarily removed.
  • noise of exhaust gas is thirdly removed.
  • exhaust gas passes into a fourth expansion room through-a second communication pipe 16, noise of exhaust gas is fourthly removed.
  • the second communication pipe 16 is defined with a plurality of second air holes 14 through which exhaust gas can flow into the second expansion room. Exhaust gas which is deprived of noise is discharged to the outside through the tail pipe 20, a front end of which is connected to the fourth expansion room. Since the funnel-shaped pipe portion 30 is flared toward the front end of the motor vehicle, even while the motor vehicle is stopped or travels at a low speed, a substantial amount of airflow is induced therein, and a back pressure is decreased.
  • FIG. 3 there is shown a cross-sectional view illustrating an exhaust system for a motor vehicle in accordance with a second embodiment of the present invention, which is applied to a muffler.
  • a person skilled in the art will readily recognize that the present exhaust system can be effectively applied to various muffler constructions.
  • the exhaust system is applied to a muffler 10 which is divided into a plurality of expansion rooms by partitioning walls. Communication holes are defined through the partitioning walls to be arranged in a zigzag pattern.
  • the exhaust system comprises the funnel-shaped pipe portion 30 and the extended pipe portion 32.
  • the extended pipe portion 32 is formed integrally with the funnel-shaped pipe portion 30 and extends through communication pipes and the partitioning walls of the muffler 10 to be communicated with the tail pipe 20.
  • functions of the funnel-shaped pipe portion 30 and the extended pipe portion 32 since they are the same as in the first embodiment, detailed explanation thereof shall be omitted herein.
  • the exhaust system according to the present invention can be applied to the muffler by bending the funnel- shaped pipe portion 30 to face the front end of the motor vehicle and by bending the extended pipe portion 32 to be communicated with the tail pipe 20. In this way, the exhaust system can be easily modified in its configuration while not departing from the scope and spirit of the present invention.
  • An air hole 22 which is defined adjacent to the rear end of the tail pipe 20 serves as an outside air inlet hole through which outside air can flow into the tail pipe 20 owing to a high pressure which governs a discharge end of the exhaust gas discharge path.
  • FIG. 4 is a cross-sectional view illustrating an exhaust system for a motor vehicle in accordance with a third embodiment of the present invention, which is operatively associated with a muffler.
  • the muffler 10 is arranged in a path through which exhaust gas is discharged from an engine of the motor vehicle.
  • the exhaust system comprises a funnel-shaped pipe portion 41 and an extended pipe portion.
  • the funnel-shaped pipe portion 41 is flared toward a front end of the motor vehicle.
  • the extended pipe portion is fitted around and spot-welded to the tail pipe 20 which is formed at the rear end of the muffler 10.
  • a portion of the tail pipe 20, which is substantially surrounded by the funnel-shaped pipe portion 41, is defined at different axial positions with a plurality of outside air inlet openings 43 in a manner such that the outside air inlet openings 43 are spaced apart one from another in a circumferential direction.
  • Steel pieces 45 which are formed by cutting the tail pipe 20 to define the outside air inlet openings 43 and held connected at one ends thereof to the tail pipe 20, are bent into the tail pipe 20 to generate vortex flow in exhaust gas flowing through the tail pipe 20.
  • FIG. 5 is a cross-sectional view illustrating an exhaust system for a motor vehicle in accordance with a fourth embodiment of the present invention, which is operatively associated with a muffler.
  • an extended pipe portion 42 integrally connected to a rear end of the funnel-shaped pipe portion 41 has a larger diameter than the tail pipe 20 and is fastened to the tail pipe 20 by means of bolts 46, in a manner such that an annular inlet port 44, through which outside air flows into the extended pipe portion 42, is defined between the tail pipe 20 and the extended pipe portion 42.
  • FIGs. 6 and 7 are cross-sectional views illustrating exhaust systems for a motor vehicle in accordance with fifth and sixth embodiments of the present invention, which are operatively associated with mufflers.
  • the exhaust systems further comprise a spiral plate segment 47 formed by twisting a metallic plate and placed in the extended pipe portion 42 or the tail pipe 20 through which exhaust gas is discharged, to generate vortex flow.
  • the spiral plate segment 47 functions to generate vortex flow in exhaust gas. Therefore, as vortex flow is generated in exhaust gas flowing through a narrow path, discharge of exhaust gas can be accelerated.
  • FIGs. 8 and 9 illustrate an exhaust system for a motor vehicle in accordance with a seventh embodiment of the present invention.
  • a separate pipe 48 which has an inner diameter corresponding to an outer diameter of the tail pipe 20 to allow the tail pipe 20 to be fitted therein, is positioned at a center of the funnel-shaped pipe portion 41 which is flared toward the front end of the motor vehicle.
  • the separate pipe 48 is rigidly connected to the funnel-shaped pipe portion 41 by way of a plurality of support vanes 49 which are spaced apart one from another in a circumferential direction.
  • the support vanes 49 function to generate vortex flow in outside air which passes through the funnel-shaped pipe portion 41.
  • the separate pipe 48 which is positioned at the center of the funnel-shaped pipe portion 41 and fitted around the tail pipe 20, is connected to the funnel-shaped pipe portion 41 by way of the support vanes 49, it is possible to fixedly and stably support the funnel-shaped pipe portion 41.
  • the exhaust system for a motor vehicle provides advantages in that, since a funnel-shaped pipe portion is mounted to a muffler to allow outside air to be mixed with exhaust gas flowing through a tail pipe to thereby rapidly discharge exhaust gas, with an air inflow rate varying depending upon a speed of the motor vehicle, a back pressure is decreased, and output and fuel economy of an engine are improved. Also, due to the fact that the exhaust system has a simple construction while ensuring inflow of outside air and generation of vortex flow, the exhaust system can be applied to existing mufflers without requiring modification of the existing mufflers.
  • the exhaust system extending through the muffler is rigidly structured to improve durability while preventing noise of exhaust gas from leaking to the outside, functionality of the muffler is maintained as it is. Also, by the fact that foreign matters which may be contained in outside air, such as dust, sand, and the like, are discharged to the outside through an extended pipe portion extending adjacent to a rear end of the tail pipe, it is possible to avoid malfunctioning of the muffler due to accumulation of the foreign matters in the muffler, including closure of air holes, functional deterioration of sound absorbing material, and reduction in volumetric capacity of the muffler. In addition, as exhaust gas is rapidly discharged to the outside, an amount of carbon, moisture, etc., which are left in an exhaust cleaner and the muffler, is decreased, whereby an available service time of the exhaust system can be lengthened.

Landscapes

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

Abstract

La présente invention concerne un système d'échappement pour véhicule automobile, conçu pour être appliqué à ou associé de manière fonctionnelle à un silencieux disposé dans une sortie de gaz d'échappement pour accélérer la sortie de gaz d'échappement. Ledit système comprend une partie de tuyau en forme d'entonnoir évasé vers une extrémité avant du véhicule automobile et communiquant avec une partie arrière de la sortie de gaz d'échappement. De l'air extérieur collecté dans la partie de tuyau en forme d'entonnoir évasé est mélangé aux gaz d'échappement qui passent à travers le silencieux et s'écoulent à travers la sortie de gaz d'échappement, pour faire sortir rapidement les gaz d'échappement.
PCT/KR2002/000641 2001-04-11 2002-04-11 Silencieux pour automobile WO2002084083A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR2001/10194U 2001-04-11
KR2020010010194U KR200237021Y1 (ko) 2001-04-11 2001-04-11 자동차용 배기구
KR2002/13963 2002-03-14
KR10-2002-0013963A KR100464711B1 (ko) 2002-03-14 2002-03-14 자동차용 배기구

Publications (1)

Publication Number Publication Date
WO2002084083A1 true WO2002084083A1 (fr) 2002-10-24

Family

ID=26638846

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2002/000641 WO2002084083A1 (fr) 2001-04-11 2002-04-11 Silencieux pour automobile

Country Status (1)

Country Link
WO (1) WO2002084083A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2537155A (en) * 2015-04-09 2016-10-12 Vendauer Róbert Exhaust system for vehicle

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4792014A (en) * 1987-12-24 1988-12-20 Shin Seng Lin Tail pipe for drafting engine exhaust gas
KR19980039957U (ko) * 1996-12-20 1998-09-15 양재신 자동차용 배기가스 배출 장치
KR19980084621A (ko) * 1997-05-23 1998-12-05 김영귀 소음기 외장 공기유입장치

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4792014A (en) * 1987-12-24 1988-12-20 Shin Seng Lin Tail pipe for drafting engine exhaust gas
KR19980039957U (ko) * 1996-12-20 1998-09-15 양재신 자동차용 배기가스 배출 장치
KR19980084621A (ko) * 1997-05-23 1998-12-05 김영귀 소음기 외장 공기유입장치

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2537155A (en) * 2015-04-09 2016-10-12 Vendauer Róbert Exhaust system for vehicle
GB2537155B (en) * 2015-04-09 2017-03-08 Vendauer Róbert Exhaust system for vehicle

Similar Documents

Publication Publication Date Title
JP2008518157A (ja) 車両用排気装置
CN101415916B (zh) 车辆的废气排放装置
US7387188B2 (en) Sound absorber
US20060260869A1 (en) Muffler having fluid swirling vanes
KR101942753B1 (ko) 자동차 내연기관의 와류발생기
JP2007146681A (ja) 内燃機関の排気装置
WO2002084083A1 (fr) Silencieux pour automobile
CN203335193U (zh) 降噪消声器及使用该消声器的发动机排气结构
US6474697B2 (en) Exhaust elbow
JP5478920B2 (ja) 省エネ型排気マフラー用スパイラルテール及びスパイラルテールの使用方法
KR100464711B1 (ko) 자동차용 배기구
US20080308348A1 (en) Exhaust System for Internal Combustion Engines
KR102319070B1 (ko) 자동차 내연기관용 매연저감장치
KR102232248B1 (ko) 내연기관용 매연저감장치
KR200287763Y1 (ko) 자동차용 배기구
CN214533152U (zh) 消声器总成
KR100290023B1 (ko) 자동차용 머플러
KR100766807B1 (ko) 자동차용 배기구
JP2741181B2 (ja) 自動車用消音器
KR200374553Y1 (ko) 자동차용 배기구
CN111350564A (zh) 用于汽车的排气消声器
CN105569879B (zh) 一种摩托车进排气系统
KR200237021Y1 (ko) 자동차용 배기구
KR20210001060A (ko) 자동차 내연기관용 매연저감장치
JP3010940U (ja) 自動車用消音器

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SD SE SG SI SK SL TJ TM TN TR TT TZ UA UG US UZ VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP