KR20010037782A - Structure for preventing vibration of pipe connecting front muffler and rear muffler for automobile - Google Patents

Structure for preventing vibration of pipe connecting front muffler and rear muffler for automobile Download PDF

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Publication number
KR20010037782A
KR20010037782A KR1019990045478A KR19990045478A KR20010037782A KR 20010037782 A KR20010037782 A KR 20010037782A KR 1019990045478 A KR1019990045478 A KR 1019990045478A KR 19990045478 A KR19990045478 A KR 19990045478A KR 20010037782 A KR20010037782 A KR 20010037782A
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KR
South Korea
Prior art keywords
muffler
automobile
vibration
silencer
bracket
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KR1019990045478A
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Korean (ko)
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KR100323068B1 (en
Inventor
박종환
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정주호
대우자동차 주식회사
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Priority to KR1019990045478A priority Critical patent/KR100323068B1/en
Publication of KR20010037782A publication Critical patent/KR20010037782A/en
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Publication of KR100323068B1 publication Critical patent/KR100323068B1/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00Exhaust 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
    • F01N13/18Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1805Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
    • F01N13/1811Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body with means permitting relative movement, e.g. compensation of thermal expansion or vibration
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00Exhaust 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
    • F01N13/18Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1872Construction facilitating manufacture, assembly, or disassembly the assembly using stamp-formed parts or otherwise deformed sheet-metal
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2450/00Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/22Methods or apparatus for fitting, inserting or repairing different elements by welding or brazing

Abstract

PURPOSE: A structure for preventing vibration of front and rear muffler connecting pipe of an automobile is provided to restrain the vibration of a bent part of a connecting pipe in traveling of the automobile by supporting the bent part with a bracket, thereby preventing the noise due to vibration. CONSTITUTION: In an exhauster of an automobile, a structure for preventing vibration of front and rear muffler connecting pipe of an automobile include a connecting pipe(130) forming a plurality of bent parts(131) for connecting a front muffler(110) and a rear muffler(120) with each other, brackets(140) installed diagonally to the bent parts by welding with each forming a bead for reinforcing intensity at one side surface.

Description

자동차의 전,후방 소음기 연결 파이프 진동 방지구조 {Structure for preventing vibration of pipe connecting front muffler and rear muffler for automobile}Structure for preventing vibration of pipe connecting front muffler and rear muffler for automobile}

본 발명은 자동차의 전방소음기와 후방소음기를 서로 이어주기 위한 연결파이프에 관한 것으로서, 더욱 상세히는 연료탱크의 간섭을 받지않기 위해 연결파이프의 소정부위에 형성되는 절곡부에 별도의 브라켓을 설치하여 절곡부를 지지토록하므로서 차량 주행시 절곡부에서 발생되는 진동을 최소화 하여 소음을 저감시킬 수 있도록 한 자동차의 전,후방 소음기 연결 파이프 진동 방지구조를 제공하기 위한 것이다.The present invention relates to a connection pipe for connecting the front silencer and the rear silencer of the vehicle with each other, and more particularly, by installing an additional bracket at a bent portion formed in a predetermined portion of the connection pipe so as not to interfere with the fuel tank. It is to provide an anti-vibration structure for connecting the front and rear silencer of the car to reduce the noise by minimizing the vibration generated in the bent portion during vehicle driving by supporting the unit.

일반적으로 자동차의 엔진은 연료의 연소에 의해 발생한 열에너지를 기계에너지로 변환시키는 다실린더 엔진으로서, 실린더의 내부로 쵸크밸브의 조절에 의해 흡입된 공기와 무화(霧化)되어 공기중에 부유된 연료가 섞인 혼합기를 엑셀페달과 케이블로 연결된 스로틀밸브를 엑셀페달로 조절하여 실린더내로 흡입시켜 피스톤으로 압축한 다음 점화시키면 급격히 연소하여 고온고압의 가스가 발생된다.In general, the engine of an automobile is a multicylinder engine that converts thermal energy generated by combustion of fuel into mechanical energy. The fuel suspended in the air by being atomized with air sucked by the control of the choke valve inside the cylinder The throttle valve connected with the accelerator pedal and the cable is controlled by the accelerator pedal, sucked into the cylinder, compressed by the piston, and then ignited.

이 고온고압의 가스에 의해 각 실린더가 흡입, 압축, 팽창, 배기행정을 하여 피스톤이 승강 직선운동을 하게 되는데, 이 직선운동이 피스톤의 커넥팅로드를 거펴 크랭크축에 의하여 회전운동으로 바뀌어 바퀴에 전달되는 것이다.Each cylinder is sucked, compressed, expanded, and exhausted by this high temperature and high pressure gas, and the piston moves up and down. This linear motion is transferred to the wheel by turning the piston through the connecting rod and turning it into a rotary motion. Will be.

상기와 같은 행정을 유발하는 고온고압의 가스는 배기행정을 통하여 배기장치에 의해 외부로 배출된다.The gas of high temperature and high pressure causing the above stroke is discharged to the outside by the exhaust device through the exhaust stroke.

상기 배기장치는 실린더의 배기가스를 종합하는 배기다기관, 배기가스내의 유해물질을 무해물질로 변환시키는 촉매컨버터, 배기가스를 대기중으로 배출하는 배기파이프 및 배기소음을 저하시키는 소음기등으로 구성되어 있다.The exhaust device is composed of an exhaust manifold which aggregates exhaust gas of a cylinder, a catalytic converter for converting harmful substances in the exhaust gas into a harmless substance, an exhaust pipe for exhausting the exhaust gas into the atmosphere, and a silencer for reducing exhaust noise.

상기 소음기는 엔진에서 배출되는 배기가스의 온도와 압력을 낮추어 배기소음을 저하시키는 것으로서 보통 타원형의 통으로 이루어져 그 내부는 칸막이에 의해 3 - 4 개의 챔버로 구성되어 있고, 글라스 울과 같은 흡음재가 채워져 소리를 줄인다. 상기 소음기의 용량은 엔진배기량의 15 - 20 배 정도로 잡고 있다.The silencer is to reduce the exhaust noise by lowering the temperature and pressure of the exhaust gas discharged from the engine. The silencer is generally composed of an elliptical cylinder and is composed of three to four chambers by partitions, and is filled with sound absorbing materials such as glass wool. Reduce The capacity of the silencer is held at about 15-20 times the engine displacement.

상기 챔버는 흡입 파이프, 연결파이프 및 배출파이프에 의해 연결되어 있어 상기 배기장치를 거친 배기가스가 흡입 파이프와 연결 파이프를 거쳐 마지막으로 배출파이프를 통해서 외부로 배출된다.The chamber is connected by a suction pipe, a connecting pipe and a discharge pipe so that the exhaust gas passing through the exhaust device is discharged to the outside through the suction pipe and finally through the discharge pipe.

상기와 같이 챔버를 통과한 음파의 간섭, 압력변동의 감소, 배기온도의 저하등을 일으켜 점차로 배기가스가 소음되도록 되어 있으며, 소음효과를 높이기 위해서 소음기의 저항이 너무 커지면 엔진의 폭음은 작아지지만 배기행정에 미치는 저항, 즉 배압이 높아져 엔진의 출력이 저하되므로 자동차의 사용목적에 따라 법규에서 정한 범위에 들도록 소음의 정도를 정하고 있다.As described above, the exhaust gas is gradually made noise by interfering with sound waves passing through the chamber, reducing pressure fluctuations, and decreasing exhaust temperature.In order to increase the noise effect, if the silencer's resistance is too large, the engine's explosion is small but exhaust As the resistance to the stroke, that is, the back pressure increases, the engine output decreases, so the noise level is determined to fall within the range prescribed by the law according to the purpose of use of the vehicle.

상기의 소음기는 도 1 에서 도시한 바와같이 전방소음기(10)와 후방소음기 (20)로 구분되어 있고, 이들은 서로 강철로 된 연결 파이프(30)로 이어져 있는데, 상기 연결 파이프(30)는 일직선상으로 되어있는 것이 아니고, 소정부위를 구부려서 다수의 절곡부(31)가 형성되어있다.The silencer is divided into a front silencer 10 and a rear silencer 20, as shown in Figure 1, which are connected to each other by a connecting pipe 30 made of steel, the connecting pipe 30 is in a straight line Instead of forming a plurality of bent portions 31, predetermined portions are bent.

상기처럼 연결파이프(30)의 소정부위에 절곡부(31)를 형성하는 이유는 자동차의 배기장치는 차체의 플로어판넬(도면중 미도시) 저면에 설치되는데 상기 플로어판넬에는 배기장치뿐만 아니라 연료를 보관하기 위한 연료탱크(도면중 미도시)도 함께 설치되어 있으므로 상기 연결 파이프(30)가 일직선으로 뻗어있게 되면 연료탱크를 설치할 수가 없기 때문에 즉, 연료탱크의 간섭을 받지 않으려면 부득이 연결 파이프(30)에 절곡부(31)를 형성하여야 한다.The reason for forming the bent portion 31 in the predetermined portion of the connection pipe 30 as described above is that the exhaust device of the vehicle is installed on the bottom of the floor panel (not shown in the figure) of the vehicle body. Since the fuel tank for storage (not shown) is also installed, the fuel tank cannot be installed when the connecting pipe 30 extends in a straight line, that is, in order not to interfere with the fuel tank, the connecting pipe 30 is inevitable. It should be formed in the bent portion (31).

그런데 상기처럼 연결 파이프(30)에 절곡부(31)를 형성하다 보면 자동차가 주행시 상기 절곡부(31)에 진동이 발생되며, 이 진동은 차체로 그대로 전달되어 소음을 증대시키는 문제점이 있다.However, when the bent portion 31 is formed in the connection pipe 30 as described above, vibration occurs in the bent portion 31 when the vehicle is driven, and the vibration is transmitted to the vehicle body as it is, thereby increasing noise.

따라서, 본 발명은 상기와 같은 종래의 문제점을 해소하기 위해 발명된 것으로서, 본 발명의 목적은 전방소음기와 후방소음기를 이어주는 연결파이프의 절곡부에 브라켓을 설치하여 진동을 최소화 하므로써 소음 저감을 이룰수 있는 자동차의 전,후방 소음기 연결 파이프 진동 방지구조를 제공하는데 있다.Therefore, the present invention has been invented to solve the conventional problems as described above, the object of the present invention can achieve noise reduction by minimizing vibration by installing a bracket in the bent portion of the connecting pipe connecting the front silencer and the rear silencer. To provide a vibration suppression structure for the front and rear silencer connecting pipe of the vehicle.

이와 같은 본 발명의 목적은 다수개의 절곡부가 형성되면서 전방소음기와 후방소음기를 서로 이어주는 연결 파이프와; 일측면에 강도보강용 비드가 형성된 브라켓으로 구성되므로써 달성되는 것이다.An object of the present invention as such a connection pipe connecting the front silencer and the rear silencer while a plurality of bent portion is formed; It is achieved by consisting of a bracket having a strength reinforcing bead formed on one side.

이러한 본 발명은 연결파이프의 절곡부에 설치된 브라켓에 의해 자동차 주행도중 절곡부가 진동되는 것을 억제하여 소음을 방지할 수 있도록 하므로써 상기의 목적을 효과적으로 달성할 수가 있는 것이다.The present invention can effectively achieve the above object by suppressing the vibration of the bent portion during driving of the vehicle by the bracket provided in the bent portion of the connecting pipe to prevent noise.

도 1 은 종래 배기장치를 도시한 사시도1 is a perspective view showing a conventional exhaust device

도 2 는 본 발명이 실시된 상태를 예시한 사시도Figure 2 is a perspective view illustrating a state in which the present invention is carried out

도 3 은 도 2 의 "A"부분 확대 평면도3 is an enlarged plan view of a portion “A” of FIG. 2;

도 4 는 본 발명이 실시된 상태의 요부 단면도Figure 4 is a sectional view of the main part of the state in which the present invention is carried out

도 5 는 본 발명에서 브라켓을 예시한 사시도Figure 5 is a perspective view illustrating the bracket in the present invention

도면의 주요 부분에 대한 부호의 설명Explanation of symbols for the main parts of the drawings

110, 120 : 전,후방 소음기 130 : 연결파이프110, 120: front and rear silencer 130: connection pipe

131 : 절곡부 140 : 브라켓131: bend 140: bracket

141 : 비드141: Bead

이하 본 발명의 목적을 효과적으로 달성할 수 있는 바람직한 실시 예로서 그 기술구성 및 작용 효과를 첨부한 별첨의 도면에 의해 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings, which are attached to the technical configuration and the effect of the present invention.

즉, 도 2 는 본 발명이 실시된 상태를 예시한 사시도이고, 도 3 은 도 2 의 "A"부분 확대 평면도이며 도 4 는 본 발명이 실시된 상태의 요부 단면도 도 5 는 본 발명에서 브라켓을 예시한 사시도로서 이에 예시된 바와같이 본 발명은 자동차의 배기장치에 있어서, 전방소음기(110)와 후방소음기(120)를 연결파이프(130)로 서로 이어주되 상기 연결파이프(130)에는 다수의 절곡부(131)가 지그재그로 형성된다.That is, FIG. 2 is a perspective view illustrating a state in which the present invention is implemented, FIG. 3 is an enlarged plan view of a portion “A” of FIG. 2, and FIG. 4 is a cross-sectional view of main parts of the present invention. As illustrated in the perspective view of the present invention, in the exhaust system of the vehicle, the front silencer 110 and the rear silencer 120 are connected to each other by the connection pipe 130, but the plurality of bendings in the connection pipe 130. The portion 131 is formed in a zigzag.

그리고 상기 절곡부(131)에는 비드(141)가 형성된 브라켓(140)의 양단을 용접하여 설치한다.The bent portion 131 is installed by welding both ends of the bracket 140 on which the beads 141 are formed.

이와같이 구성된 본 발명은 별도의 브라켓(140)을 사용하여 자동차 주행시 연결파이프(130)의 절곡부(131)에 진동이 발생되지 않도록 한 것으로 즉, 종래에는 자동차 주행시에 연결파이프(30)의 절곡부(31)가 떨리면서 진동음이 발생되고, 이 진동음은 다시 차체로 유입되면서 심각한 소음이 발생되었으나 본 발명에서는 절곡부(131)에 대각선 방향으로 브라켓(140)을 용접으로 설치하므로서 상기 브라켓 (140)이 절곡부(131)를 지지하여 자동차 주행중에도 절곡부(131)가 진동되지 않아 이로인한 소음을 효과적으로 방지할 수가 있는 것이다.The present invention configured as described above uses a separate bracket 140 so that vibration is not generated in the bent portion 131 of the connection pipe 130 when driving the vehicle, that is, conventionally, the bending portion of the connection pipe 30 when driving the vehicle. Vibration sound is generated while shaking (31), and this vibration sound is introduced into the vehicle body, but serious noise is generated, but in the present invention, the bracket 140 is installed by welding the bracket 140 in the diagonal direction to the bent portion 131. By supporting the bent portion 131, the bent portion 131 is not vibrated even while driving a vehicle, thereby effectively preventing the noise.

그리고 상기 브라켓(140)은 도 5 에서 도시한 바와같이 장기간이 지나더라도 쉽게 변형되거나 파손되는 것을 방지하기 위하여 일측면에 비드(141)를 형성하여 강성을 향상시킨 것이다.And the bracket 140 is to improve the rigidity by forming a bead 141 on one side in order to prevent being easily deformed or broken even after a long time as shown in FIG.

또한 상기 브라켓(140)에 형성된 비드(141)는 브라켓(1140)을 연결파이프 (130)의 절곡부(131)에 용접 설치시 위치설정이 용이한 것으로서 다시말하면 상기 절곡부(131)에 브라켓(140)을 접면시킨 상태에서 연결파이프(130)를 약간 이동시키거나 또는 브라켓(140)을 약간 이동시키면 도 3 내지 도 4 에서 도시한 바와같이 연결파이프(130)의 일측이 브라켓(140)에 형성된 비드(141)에 걸려 더이상 이동되지 않은 상태가 되므로 이상태에서 용접작업을 행하면 되는 것이다.In addition, the bead 141 formed in the bracket 140 is easy to set the position when welding the bracket 1140 to the bent portion 131 of the connecting pipe 130, that is, the bracket (131) to the bent portion 131 When the connecting pipe 130 is slightly moved or the bracket 140 is slightly moved while the 140 is in a folded state, one side of the connecting pipe 130 is formed on the bracket 140 as shown in FIGS. 3 to 4. Since the bead 141 is no longer moved, the welding operation is performed in this state.

이상에서 상술한 바와 같이 본 발명은 전방소음기와 후방소음기를 서로 연결하여 주는 연결파이프의 절곡부에 브라켓을 설치하므로서 주행중에 절곡부가 진동되지 않아 이로인한 소음을 방지할 수 있는 매우 유용한 발명이다.As described above, the present invention is a very useful invention that prevents the noise caused by the vibration of the bent portion while driving by installing the bracket at the bent portion of the connection pipe connecting the front silencer and the rear silencer.

Claims (1)

자동차의 배기장치에 있어서,In the vehicle exhaust system, 다수개의 절곡부(131)가 형성되면서 전방소음기(110)와 후방소음기(120)를 서로 이어주는 연결 파이프(130);A connection pipe 130 connecting the front silencer 110 and the rear silencer 120 while a plurality of bent portions 131 are formed; 일측면에 강도보강용 비드(141)가 형성되면서 상기 절곡부(131)에 대각선 방향으로 설치되는 브라켓(140);A bracket 140 installed in a diagonal direction on the bent portion 131 while a strength reinforcing bead 141 is formed on one side; 으로 구성된 것을 특징으로 하는 자동차의 전,후방 소음기 연결 파이프 진동방지 구조Anti-vibration structure of the front and rear silencer connection pipe of the vehicle, characterized in that consisting of
KR1019990045478A 1999-10-20 1999-10-20 Structure for preventing vibration of pipe connecting front muffler and rear muffler for automobile KR100323068B1 (en)

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KR1019990045478A KR100323068B1 (en) 1999-10-20 1999-10-20 Structure for preventing vibration of pipe connecting front muffler and rear muffler for automobile

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KR1019990045478A KR100323068B1 (en) 1999-10-20 1999-10-20 Structure for preventing vibration of pipe connecting front muffler and rear muffler for automobile

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030081923A (en) * 2002-04-15 2003-10-22 현대자동차주식회사 exhaust system structure of vehicle

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05924U (en) * 1991-06-24 1993-01-08 カルソニツク株式会社 Exhaust pipe damper device
JPH09166012A (en) * 1995-12-15 1997-06-24 Isuzu Motors Ltd Noise reducing device of exhaust pipe
KR19990026973A (en) * 1997-09-27 1999-04-15 양재신 Exhaust Pipe Reinforcement Structure of Automobile Exhaust System

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030081923A (en) * 2002-04-15 2003-10-22 현대자동차주식회사 exhaust system structure of vehicle

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