KR19980038907U - Structure of automobile catalyst - Google Patents
Structure of automobile catalyst Download PDFInfo
- Publication number
- KR19980038907U KR19980038907U KR2019960051975U KR19960051975U KR19980038907U KR 19980038907 U KR19980038907 U KR 19980038907U KR 2019960051975 U KR2019960051975 U KR 2019960051975U KR 19960051975 U KR19960051975 U KR 19960051975U KR 19980038907 U KR19980038907 U KR 19980038907U
- Authority
- KR
- South Korea
- Prior art keywords
- housing
- exhaust gas
- catalyst
- inlet
- carrier
- Prior art date
Links
- 239000003054 catalyst Substances 0.000 title claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 12
- 238000000746 purification Methods 0.000 claims abstract description 4
- 230000035939 shock Effects 0.000 claims abstract description 3
- 238000009792 diffusion process Methods 0.000 abstract description 4
- 230000003197 catalytic effect Effects 0.000 abstract description 3
- 230000003139 buffering effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 26
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 9
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 7
- 229910002091 carbon monoxide Inorganic materials 0.000 description 7
- 229930195733 hydrocarbon Natural products 0.000 description 4
- 150000002430 hydrocarbons Chemical class 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011359 shock absorbing material Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- 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
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
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- 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
- F01N2260/14—Exhaust treating devices having provisions not otherwise provided for for modifying or adapting flow area or back-pressure
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
본 고안은 자동차의 배기가스 정화용 촉매기에 관한 것으로, 상기 촉매기의 구조를 개선하여 배기가스의 확산시에 와류가 발생되는 것을 방지하므로써 하우징 내의 배압증대를 방지하는 것을 목적으로 하며, 이를 위해, 본 고안은, 하우징과, 상기 하우징 내부의 담체로 구성되어 있으며, 상기 담체와 하우징의 내측부 사이에는 차체의 주행 충격으로부터 담체를 보호하기 위한 완충재가 제공되고, 상기 하우징의 양쪽 측면부에는 깔대기 형상의 배기가스 입구 및 출구가 형성되어 있는 배기가스 정화용 촉매기의 구조로서, 상기 하우징 입구의 외측둘레에 일정한 곡율을 형성하여 단면적의 급격한 증가를 억제시키고, 상기 하우징의 외측 원통부와 상기 입구의 접촉부에 단차를 형성하여 상기 단차부에 완충재를 제공하므로써, 배기가스가 상기 완충재와 직접적으로 접촉하지 못하도록 하는 것을 특징으로 하는 촉매기의 구조를 제공한다.The present invention relates to a catalyst for purifying exhaust gas of an automobile, and aims to prevent back pressure increase in a housing by improving the structure of the catalyst to prevent eddy currents from occurring during diffusion of exhaust gas. The present invention comprises a housing and a carrier inside the housing, and a buffer material is provided between the carrier and the inner portion of the housing to protect the carrier from the driving shock of the vehicle body, and both side portions of the housing have a funnel-shaped exhaust gas. An exhaust gas purification catalyst having an inlet and an outlet formed therein, wherein a constant curvature is formed on the outer periphery of the housing inlet to suppress a sudden increase in the cross-sectional area, and a step is formed between the outer cylindrical portion of the housing and the contact portion of the inlet. By forming and providing a cushioning material to the stepped portion, exhaust gas is absorbed into the buffering material. It provides a structure of the catalytic group, characterized in that to prevent direct contact.
Description
본 고안은 자동차용 촉매기에 관한 것으로서, 보다 구체적으로는 엔진에서 배출된 배기가스의 유해성분을 산화 또는 환원시켜 감소시키기 위해 배기 파이프의 촉매기의 배압을 감소시키기 위한 촉매기의 구조에 관한 것이다.The present invention relates to a catalyst for automobiles, and more particularly to a structure of a catalyst for reducing the back pressure of the catalyst of the exhaust pipe to reduce or reduce the harmful components of the exhaust gas discharged from the engine.
최근 들어서, 자동차의 배출가스로 인한 대기 오염을 방지하는 것이 환경 위생상 중요한 문제로 대두되고 있으며, 이에 대한 대책이 시급한 실정이다.In recent years, preventing air pollution due to emissions from automobiles has emerged as an important issue for environmental hygiene, and countermeasures are urgently needed.
자동차의 배출가스는 배기 파이프로 배출되는 배기가스, 엔진의 크랭크케이스에서 배출되는 블로바이 가스, 및 연료탱크나 기화기 등에서 증발되는 연료증발 가스가 있다.Exhaust gases of automobiles include exhaust gases exhausted from exhaust pipes, blow-by gases exhausted from crankcases of engines, and fuel vaporization gases evaporated from fuel tanks and carburettors.
이 중에서 배기가스는 연료가 실린더 안에서 연소된 다음, 배기 파이프를 통해 외부로 배출된다. 배기가스의 성분은 대부분이 인체에 무해한 수증기(H2O), 질소(N2), 탄산가스(CO2) 등이나, 일산화탄소(CO), 탄화수소(HC), 질소산화물(NOx) 등의 유해한 물질도 포함되어 있다.Among these, the exhaust gas is discharged to the outside through the exhaust pipe after the fuel is burned in the cylinder. Most of the components of the exhaust gas are harmful to the human body, such as water vapor (H 2 O), nitrogen (N 2 ), carbon dioxide (CO 2 ), and harmful substances such as carbon monoxide (CO), hydrocarbons (HC), and nitrogen oxides (NOx). It also contains substances.
배기가스내의 유해성분을 제거하기 위한 방안으로, 종래 공지된 것으로는 엔진에서 배출된 배기가스가, 배기 매니폴드 후방의 배기 파이프에 장착된 산화 또는 환원 축매로 통과되도록 하므로서, 유해성분이 감소 및 제거되도록 한 촉매기 방식이 있다.In order to remove harmful components in the exhaust gas, the conventionally known method allows exhaust gas discharged from the engine to be passed through an oxidation or reduction storage mounted on the exhaust pipe behind the exhaust manifold, thereby reducing and removing the harmful components. There is one catalytic system.
이러한 촉매기 방식은 배기가스 속의 CO와 HC를 산화시켜 무해한 CO2와 H2O로 만드는 산화 촉매기와, 배기가스 속의 NOx를 환원시켜 해가 없는 N2와 CO2로 만드는 환원 촉매기와, 배기가스 속의 CO, HC, NOx를 동시에 하나의 촉매로 산화 또는 환원시키는 3원 촉매기가 있다.This catalyst system is an oxidation catalyst which oxidizes CO and HC in exhaust gas to be harmless CO 2 and H 2 O, a reduction catalyst which reduces NOx in exhaust gas to harmless N 2 and CO 2 , and exhaust gas. There is a three-way catalytic group that simultaneously oxidizes or reduces CO, HC, and NOx in one catalyst.
이와 같이 촉매기는 금속제 하우징과 상기 금속제 하우징 내에 들어 있는 촉매로 구성되며, 상기 촉매는 골격부로서의 담체와, 그 담체 위에 도포된 세라믹의 중간층(혹은 wash-coat), 그리고 그 중간층 위에 도포된 촉매층으로 이루어진다. 또한, 담체에는 세라믹 일체형(ceramic monolith)과 금속 일체형(metal monolith)이 많이 사용된다.As such, the catalyst is composed of a metal housing and a catalyst contained in the metal housing, and the catalyst is composed of a carrier as a skeleton, an intermediate layer (or wash-coat) of ceramic applied on the carrier, and a catalyst layer applied on the intermediate layer. Is done. In addition, many ceramic monoliths and metal monoliths are used for the carrier.
여기서, 촉매기의 종래 공지된 구조가 도 1에 잘 나타나 있다.Here, the conventionally known structure of the catalyst is shown well in FIG.
상기 촉매기(1)는 상술된 바와 같이, 외부의 하우징(2)과, 내부의 담체(3)로 구성되어 있으며, 상기 담체(3)와 하우징(2)의 내측부 사이에는 차체의 주행 충격으로부터 담체(3)를 보호하기 위한 완충재(4)가 제공되어 있다. 또한, 상기 하우징(2)의 양쪽 측면부에는 깔대기 형상의 배기가스 입구(5) 및 출구(6)가 형성되어 있다.As described above, the catalyst 1 is composed of an outer housing 2 and an inner carrier 3, and between the carrier 3 and the inner side of the housing 2, from the impact of the running of the vehicle body. A shock absorbing material 4 for protecting the carrier 3 is provided. Further, funnel-shaped exhaust gas inlets 5 and outlets 6 are formed at both side portions of the housing 2.
도 2에는 이러한 하우징(2) 입구(9)의 구조를 상세하게 나타내는 도면으로서, 도시된 바와 같이, 좁은 통로를 통해 하우징(2)의 내부로 도입된 배기가스는 하우징(2)내의 넓은 공간부에 의하여 보다 빠르게 담체(3)로의 확산이 이루어지게 된다.FIG. 2 shows the structure of the inlet 9 of the housing 2 in detail, and as shown, the exhaust gas introduced into the housing 2 through the narrow passage is a large space portion in the housing 2. As a result, diffusion into the carrier 3 is more rapid.
그런데, 종래에 있어서, 촉매기의 하우징 입구가 깔대기 모양으로 구성되므로써, 하우징(2)의 외측 원통부와 깔대기부간의 접촉부와 완충재 부분에 의하여 배기가스의 확산시에 와류가 형성되어 하우징(2)내에서 배압이 발생되므로써, 배기가스의 정화작용이 원활하게 이루어지지 못하게 되는 문제점이 있었다.By the way, in the related art, since the housing inlet of the catalyst is formed in a funnel shape, vortices are formed at the time of diffusion of the exhaust gas by the contact portion between the outer cylindrical portion of the housing 2 and the funnel portion and the buffer member portion, so that the housing 2 is formed. Since back pressure is generated in the interior, there is a problem that the purification of the exhaust gas is not performed smoothly.
따라서, 본 고안은 이러한 종래의 문제점을 해결하기 위하여 안출된 것으로, 상기 배기가스 정화용 촉매기의 구조를 개선하여 배기가스의 확산시에 와류가 발생되는 것을 방지하므로써 하우징 내의 배압증대를 방지하는 것을 목적으로 한다.Therefore, the present invention has been devised to solve such a conventional problem, and aims at preventing back pressure increase in the housing by improving the structure of the catalyst for purifying exhaust gas and preventing eddy currents from occurring during diffusion of the exhaust gas. It is done.
도 1은 일반적인 자동차용 촉매기의 구조를 보인 측단면도.Figure 1 is a side cross-sectional view showing the structure of a typical automotive catalyst.
도 2는 도 1에 도시된 촉매기의 입구를 나타내는 확대도.FIG. 2 is an enlarged view showing the inlet of the catalyst shown in FIG.
도 3은 본 고안의 촉매기의 입구를 나타내는 확대도.Figure 3 is an enlarged view showing the inlet of the catalyst of the present invention.
*도면의 주요 부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *
1:촉매기2:하우징1: Catalyst 2: Housing
3:담체4:완충재3: carrier 4: buffer
5:하우징의 입구6:하우징의 출구5: inlet of housing 6: outlet of housing
상기 목적을 달성하기 위하여, 본 고안은, 하우징과, 상기 하우징 내부의 담체로 구성되어 있으며, 상기 담체와 하우징의 내측부 사이에는 차체의 주행 충격으로부터 담체를 보호하기 위한 완충재가 제공되고, 상기 하우징의 양쪽 측면부에는 깔대기 형상의 배기가스 입구 및 출구가 형성되어 있는 배기가스 정화용 촉매기의 구조로서, 상기 하우징 입구의 외측둘레에 일정한 곡율을 형성하여 단면적의 급격한 증가를 억제시키고, 상기 하우징의 외측 원통부와 상기 입구의 접촉부에 단차를 형성하여 상기 단차부에 완충재를 제공하므로써, 배기가스가 상기 완충재와 직접적으로 접촉하지 못하도록 하는 것을 특징으로 하는 촉매기의 구조를 제공한다.In order to achieve the above object, the present invention is composed of a housing and a carrier inside the housing, and a cushioning material is provided between the carrier and the inner portion of the housing to protect the carrier from driving shocks of the vehicle body. An exhaust gas purification catalyst having a funnel-shaped exhaust gas inlet and an outlet formed on both side surfaces thereof, and having a constant curvature formed at the outer periphery of the housing inlet to suppress a sharp increase in the cross-sectional area, and the outer cylindrical portion of the housing. And forming a step at the contact portion of the inlet to provide a buffer material in the step portion, thereby providing a structure of the catalyst apparatus, which prevents the exhaust gas from directly contacting the buffer material.
이하, 본 고안을 실현하기 위한 바람직한 일 실시예를 첨부 도면에 의거하여 보다 상세하게 설명한다.Hereinafter, a preferred embodiment for realizing the present invention will be described in more detail with reference to the accompanying drawings.
[실시예]EXAMPLE
도 3은 본 고안의 촉매기의 입구를 나타내는 확대도로서, 본 고안에 의하면, 상기 하우징(2) 입구(5)의 외측둘레에 일정한 곡율을 형성하여 배기가스가 하우징(2) 내부로 도입될때 공간부의 급격한 확장을 억제시키고, 또한, 상기 하우징(2)의 외측 원통부와 상기 입구(5)의 접촉부에 단차를 형성하여 상기 단차부에 완충재(4)를 제공하므로써, 배기가스가 상기 완충재(4)와 직접적으로 접촉하지 못하게 한다.Figure 3 is an enlarged view showing the inlet of the catalyst of the present invention, according to the present invention, when the exhaust gas is introduced into the housing 2 by forming a constant curvature in the outer periphery of the inlet 5 of the housing (2) By suppressing the rapid expansion of the space portion, and forming a step at the contact portion between the outer cylindrical portion of the housing 2 and the inlet 5 and providing the buffer material 4 at the step, the exhaust gas is the buffer material ( Avoid direct contact with 4).
따라서, 이러한 구성에 의하여, 상기 하우징(2)의 내부로 도입된 배기가스는 서서히 증가되는 입구(5)의 곡률부를 따라 담체(3)에 직접적으로 접하게 된다.Thus, by this configuration, the exhaust gas introduced into the interior of the housing 2 is in direct contact with the carrier 3 along the curvature of the inlet 5 which is gradually increased.
이상에서 설명된 실시예를 통하여, 본 고안에 의한 배기가스 정화용 촉매기에 의하면, 상기 촉매기의 하우징 입구부에 곡율을 형성하여 면적이 서서히 증가되도록 하며, 또한 상기 하우징의 외측 원통부와 상기 입구와의 접촉부에 단차를 형성하여 원통부의 내면상에 제공되는 완충부(4)의 홈을 형성시키므로써, 하우징내로 도입되는 배기가스가 완충재에 접하지 못하도록 하므로써, 와류 형성이 방지되어 하우징 내부의 배압형성이 억제되는 효과가 있다.Through the embodiment described above, according to the exhaust gas purifying catalyst according to the present invention, by forming a curvature in the inlet of the housing of the catalyst so that the area is gradually increased, and the outer cylindrical portion and the inlet of the housing and By forming a step in the contact portion of the groove to form the groove of the buffer portion 4 provided on the inner surface of the cylindrical portion, the exhaust gas introduced into the housing does not come into contact with the buffer material, thereby preventing the formation of vortex to form a back pressure inside the housing. This has the effect of being suppressed.
한편, 본 고안은 상술한 특정의 바람직한 실시예에 한정되지 아니하며, 실용신안등록청구의 범위에서 청구하는 본 고안의 요지를 벗어남이 없이 당해 고안이 속하는 분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변경 실시가 가능할 것이다.On the other hand, the present invention is not limited to the above-described specific preferred embodiments, anyone of ordinary skill in the field to which the subject innovation belongs without departing from the gist of the subject innovation claimed in the utility model registration claims Modifications may be made.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019960051975U KR19980038907U (en) | 1996-12-20 | 1996-12-20 | Structure of automobile catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019960051975U KR19980038907U (en) | 1996-12-20 | 1996-12-20 | Structure of automobile catalyst |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR19980038907U true KR19980038907U (en) | 1998-09-15 |
Family
ID=53992198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019960051975U KR19980038907U (en) | 1996-12-20 | 1996-12-20 | Structure of automobile catalyst |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR19980038907U (en) |
-
1996
- 1996-12-20 KR KR2019960051975U patent/KR19980038907U/en not_active Application Discontinuation
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WITN | Application deemed withdrawn, e.g. because no request for examination was filed or no examination fee was paid |