CN109026312A - A kind of automobile tail gas filtering device - Google Patents
A kind of automobile tail gas filtering device Download PDFInfo
- Publication number
- CN109026312A CN109026312A CN201811145210.4A CN201811145210A CN109026312A CN 109026312 A CN109026312 A CN 109026312A CN 201811145210 A CN201811145210 A CN 201811145210A CN 109026312 A CN109026312 A CN 109026312A
- Authority
- CN
- China
- Prior art keywords
- cylinder
- protrusion
- air inlet
- noise reduction
- perforation
- 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.)
- Pending
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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
- F01N13/009—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 purifying devices arranged 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
- 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
- F01N13/007—Apparatus used as intake or exhaust silencer
-
- 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
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
-
- 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
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/022—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses a kind of automobile tail gas filtering devices, including air inlet pipe, noise reduction cylinder, Cleaning machine structure and the dirty cylinder that disappears, the both ends of the noise reduction cylinder are closed, and one end wall of noise reduction cylinder is equipped with perforation, one end of the air inlet pipe passes through perforation, and enters in noise reduction cylinder, and the air inlet pipe entered in noise reduction cylinder is equipped with multiple internal ventholes, multiple acoustic elements are equipped in the noise reduction cylinder, the Cleaning machine structure includes the first and second inlet cylinder.The beneficial effects of the present invention are: Cleaning machine structure is connected by left connector with right connector, is conveniently replaceable, cleans filter screen, can effective noise reduction and reduction tail gas pollution, filter screen easy for removal and installation, it is more convenient；Noise reduction cylinder, Cleaning machine structure and the dirty cylinder that disappears of setting simultaneously carries out tail gas filtering processing in the case where tail gas carries out noise abatement, and the effect of environmental protection is played to atmosphere.
Description
Technical field
The present invention relates to Automobile Products technical fields, more particularly, to a kind of automobile tail gas filtering device.
Background technique
With the development of society, the raising of people's quality of life, automobile more and more enter in every household, greatly
The problem of ground facilitates people's lives, but there is also every aspects during using automobile, automobile exhaust cylinder is exactly
One of them, often structure is single for existing automobile exhaust cylinder, and erasure effect is low, and noise reduction is unobvious, and reduction tail is also not achieved
The standard of gas pollution；It simultaneously when cleaning filter screen, generally requires to unload entire exhaust tube, installation and removal are inconvenient.
Summary of the invention
For overcome the deficiencies in the prior art, the object of the present invention is to provide one kind being capable of effectively noise reduction and reduction tail gas dirt
The automobile tail gas filtering device of dye, filter screen easy for removal and installation, is particluarly suitable in the use process of automobile.
The technical solution adopted in the present invention is as follows: a kind of automobile tail gas filtering device, including air inlet pipe, noise reduction cylinder, disappears
Dirty mechanism and the dirty cylinder that disappears,
The both ends of the noise reduction cylinder are closed, and one end wall of noise reduction cylinder is equipped with and perforates, the one of the air inlet pipe
End enters in noise reduction cylinder across perforation, and the air inlet pipe entered in noise reduction cylinder is equipped with multiple internal ventholes, described
Multiple acoustic elements are equipped in noise reduction cylinder, the acoustic element includes outer framework, and silencing cotton, the noise reduction are equipped on outer framework
Cotton is equipped with several noise reduction ventholes, is equipped with first row port, the first row port on the downside of the noise reduction cylinder other end
It is connected with one end of downtake pipe,
The Cleaning machine structure includes the first and second inlet cylinder, be equipped on the upside of one end of first inlet cylinder first into
Port, the other end of the downtake pipe are connected with the first air inlet, pass through between the first inlet cylinder and the second inlet cylinder
Filtration members are connected, and the filtration members include left connector and the right connector that is connected with left connector, in left connector and the right side
Filter screen is equipped between connector, the filter screen is active carbon net,
The other end of first inlet cylinder is equipped with right connector, and the upper and lower two sides difference of the first inlet cylinder at the end
Equipped with the first upper air protrusion and the first lower air inlet protrusion, in the first upper air protrusion and the first lower air inlet protrusion respectively
Equipped with the first upper air protrusion hole and the first lower air inlet protrusion hole, the right connector is connected with the outboard end of left connector,
The upper and lower two sides of left connector at the end are respectively equipped with the first upper screwed hole, the first lower threaded hole, and it is enterprising that the first screw passes through first
Gas protrusion hole is threaded in the first upper screwed hole, and the second screw passes through the first lower air inlet protrusion hole and is threaded under first
In threaded hole,
The inner end upper/lower terminal of the left connector is respectively equipped with protruding block and the first lower convexity block, institute on first
It is respectively equipped with protrusion perforation and the perforation of the first lower convexity on first on protruding block and the first lower convexity block on first stated, it is described
The upper and lower two sides in the inner end of right connector are respectively equipped with protruding block and the second lower convexity block on second, protrusion on described second
Protrusion perforation and the perforation of the second lower convexity on second are respectively equipped on block and the second lower convexity block, it is convex that third screw passes through first
Perforation, the first perforation on filter screen, protrusion perforation on second are played, and is threadedly coupled by top nut, the 4th screw is across the
The second perforation, the perforation of the second lower convexity in the perforation of one lower convexity, filter screen, and be threadedly coupled by lower nut,
One end of second inlet cylinder is equipped with left connector, and the upper and lower two sides of the second inlet cylinder at the end are set respectively
There are the second upper air protrusion and the second lower air inlet protrusion, is set respectively in the second upper air protrusion and the second lower air inlet protrusion
There are the second upper air protrusion hole and the second lower air inlet protrusion hole, the left connector is connected with the outboard end of right connector, should
The upper and lower two sides of right connector at end are respectively equipped with the second upper screwed hole, the second lower threaded hole, and the 5th screw passes through the second upper air
Raised hole is threaded in the second upper screwed hole, and the 6th screw passes through the second lower air inlet protrusion hole and is threaded in the second lower spiral shell
In pit,
It is equipped with the first gas outlet on the downside of the other end of second inlet cylinder, the one of first gas outlet and second exhaust pipe
End is connected, and the other end of the second exhaust pipe is connected with second exhaust port, and the second exhaust port is located at the dirty cylinder one that disappears
On the upper wall of side, muti-piece filter plate is fixed in the dirty cylinder that disappears, the other side of the dirty cylinder that disappears is communicated with escape pipe.
Preferably, the outer framework is fixed on the inner wall of noise reduction cylinder.
Preferably, the air inlet pipe is welded at the perforation of noise reduction cylinder.
Preferably, the downtake pipe and first row port junction are equipped with sealing ring.
Preferably, the both ends of the downtake pipe are respectively equipped with screw nipple, lower screw nipple, described
Upper threaded connection pipe screw thread is located at first row port, and is fixed by upper fixture nut, and lower threaded connection pipe screw thread is located at
At one air inlet, and fixed by lower fixture nut.
Preferably, sealing ring is equipped between the left connector and right connector.
Compared with prior art, the beneficial effects of the present invention are: due to the adoption of the above technical scheme, Cleaning machine structure passes through a left side
Connector is connected with right connector, is conveniently replaceable, cleans filter screen, effectively noise reduction and can reduce tail gas pollution, easy to disassemble
It is more convenient with installation filter screen；Noise reduction cylinder, Cleaning machine structure and the dirty cylinder that disappears of setting simultaneously, the case where tail gas carries out noise abatement
Under, tail gas filtering processing is carried out, the effect of environmental protection is played to atmosphere.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Fig. 2 is the partial enlarged view in Fig. 1 at A
In figure:
1, air inlet pipe 2, noise reduction cylinder 3, disappear dirty cylinder
4, downtake pipe 5, the first inlet cylinder 6, the second inlet cylinder
7, left connector 8, right connector 9, filter screen
10, acoustic element 11, the first screw 12, the second screw
13, third screw 14, the 4th screw 15, the 5th screw
16, the 6th screw 17, second exhaust pipe 18, filter plate
19, escape pipe 20, top nut 21, lower nut
Specific embodiment
In the following, being described further in conjunction with attached drawing and specific embodiment to the present invention:
As shown in Figure 1, 2, the technical scheme is that including air inlet pipe 1, noise reduction cylinder 2, Cleaning machine structure and the dirty cylinder 3 that disappears,
The both ends of the noise reduction cylinder 2 are closed, and 2 one end wall of noise reduction cylinder is equipped with perforation, the air inlet pipe 1
One end passes through perforation, and enters in noise reduction cylinder 2, and the air inlet pipe 1 entered in noise reduction cylinder 2 is equipped with multiple internal ventholes,
Multiple acoustic elements 10 are equipped in the noise reduction cylinder 2, the acoustic element 10 includes outer framework, and noise reduction is equipped on outer framework
Cotton, the silencing cotton are equipped with several noise reduction ventholes, are equipped with first row port, institute on the downside of 2 other end of noise reduction cylinder
The first row port stated is connected with one end of downtake pipe 4,
The Cleaning machine structure includes the first and second inlet cylinder, be equipped on the upside of one end of first inlet cylinder 5 first into
The other end of port, the downtake pipe 4 is connected with the first air inlet, leads between the first inlet cylinder 5 and the second inlet cylinder 6
It crosses filtration members to be connected, the filtration members include left connector 7 and the right connector 8 that is connected with left connector 7, in left connection
Filter screen 9 is equipped between body 7 and right connector 8, the filter screen 9 is active carbon net,
The other end of first inlet cylinder 5 is equipped with right connector, and the upper and lower two sides of the first inlet cylinder 5 at the end point
Not She You the first upper air protrusion and the first lower air inlet protrusion, in the first upper air protrusion and the first lower air inlet protrusion point
Not She You the first upper air protrusion hole and the first lower air inlet protrusion hole, the outboard end phase of the right connector and left connector 7
Even, the upper and lower two sides of left connector 7 at the end are respectively equipped with the first upper screwed hole, the first lower threaded hole, and the first screw 11 passes through the
One upper air protrusion hole is threaded in the first upper screwed hole, and the second screw 12 passes through the first lower air inlet protrusion hole and is threadedly coupled
Under first in threaded hole,
The inner end upper/lower terminal of the left connector 7 is respectively equipped with protruding block and the first lower convexity block, institute on first
It is respectively equipped with protrusion perforation and the perforation of the first lower convexity on first on protruding block and the first lower convexity block on first stated, it is described
The upper and lower two sides in inner end of right connector 8 are respectively equipped with protruding block and the second lower convexity block on second, protrusion on described second
Protrusion perforation and the perforation of the second lower convexity, third screw 13 on second is respectively equipped on block and the second lower convexity block to pass through on first
Protrusion is perforated, the first perforation on filter screen 9, protrusion is perforated on second, and is threadedly coupled by top nut 20, the 4th screw 14
The second perforation, the perforation of the second lower convexity on the perforation of the first lower convexity, filter screen 9, and be threadedly coupled by lower nut 21,
One end of second inlet cylinder 6 is equipped with left connector, and the upper and lower two sides difference of the second inlet cylinder 6 at the end
Equipped with the second upper air protrusion and the second lower air inlet protrusion, in the second upper air protrusion and the second lower air inlet protrusion respectively
Equipped with the second upper air protrusion hole and the second lower air inlet protrusion hole, the left connector is connected with the outboard end of right connector 8,
The upper and lower two sides of right connector 8 at the end are respectively equipped with the second upper screwed hole, the second lower threaded hole, and the 5th screw 15 passes through second
Upper air protrusion hole is threaded in the second upper screwed hole, and the 6th screw 16 passes through the second lower air inlet protrusion hole and is threaded in
In second lower threaded hole,
The first gas outlet, first gas outlet and second exhaust pipe 17 are equipped on the downside of the other end of second inlet cylinder 6
One end be connected, the other end of the second exhaust pipe 17 is connected with second exhaust port, and the second exhaust port, which is located at, to disappear
On the upper wall of dirty 3 side of cylinder, muti-piece filter plate 18 is fixed in the dirty cylinder 3 that disappears, the other side of the dirty cylinder 3 that disappears connects
It is connected with escape pipe 19.
In the present embodiment, the outer framework is fixed on the inner wall of noise reduction cylinder 2.
In the present embodiment, the air inlet pipe 1 is welded at the perforation of noise reduction cylinder 2.
In the present embodiment, the downtake pipe 4 and first row port junction are equipped with sealing ring.
In the present embodiment, the both ends of the downtake pipe 4 are respectively equipped with screw nipple, lower screw nipple,
The upper threaded connection pipe screw thread is located at first row port, and is fixed by upper fixture nut, lower threaded connection pipe screw thread
It is located at the first air inlet, and is fixed by lower fixture nut.
In the present embodiment, sealing ring is equipped between the left connector 7 and right connector 8.
The course of work of this example: after automobile starting, tail gas is entered in noise reduction cylinder by air inlet pipe, by acoustic element,
Noise content is reduced, then passes through the filter screen of silencer mechanism, tail gas is filtered, the dirty cylinder that disappears is finally entered, is disappeared in dirty cylinder
Filter plate further filters it, is finally discharged by escape pipe.
It will be apparent to those skilled in the art that can make various other according to the above description of the technical scheme and ideas
Corresponding change and deformation, and all these changes and deformation all should belong to the protection scope of the claims in the present invention
Within.
Claims (5)
1. a kind of automobile tail gas filtering device, it is characterised in that: including air inlet pipe, noise reduction cylinder, Cleaning machine structure and the dirty cylinder that disappears,
The both ends of the noise reduction cylinder are closed, and one end wall of noise reduction cylinder is equipped with perforation, and one end of the air inlet pipe is worn
Perforation is crossed, and is entered in noise reduction cylinder, the air inlet pipe entered in noise reduction cylinder is equipped with multiple internal ventholes, the noise reduction
Multiple acoustic elements are equipped in cylinder, the acoustic element includes outer framework, silencing cotton is equipped on outer framework, on the silencing cotton
Equipped with several noise reduction ventholes, it is equipped with first row port on the downside of the described noise reduction cylinder other end, the first row port and the
One end of one exhaust pipe is connected,
The Cleaning machine structure includes the first and second inlet cylinder, is equipped with the first air inlet on the upside of one end of first inlet cylinder,
The other end of the downtake pipe is connected with the first air inlet, passes through filtration members between the first inlet cylinder and the second inlet cylinder
It is connected, the filtration members include left connector and the right connector that is connected with left connector, in left connector and right connector
Between be equipped with filter screen, the filter screen be active carbon net,
The other end of first inlet cylinder is equipped with right connector, and the upper and lower two sides of the first inlet cylinder at the end are respectively equipped with
It is respectively equipped in first upper air protrusion and the first lower air inlet protrusion, the first upper air protrusion and the first lower air inlet protrusion
First upper air protrusion hole and the first lower air inlet protrusion hole, the right connector are connected with the outboard end of left connector, the end
The upper and lower two sides of left connector be respectively equipped with the first upper screwed hole, the first lower threaded hole, it is convex that the first screw passes through the first upper air
It plays hole to be threaded in the first upper screwed hole, the second screw passes through the first lower air inlet protrusion hole and is threaded in the first lower screw thread
In hole,
The inner end upper/lower terminal of the left connector is respectively equipped with protruding block and the first lower convexity block on first, described
Protrusion perforation and the perforation of the first lower convexity, the right company on first are respectively equipped on protruding block and the first lower convexity block on first
The upper and lower two sides in the inner end of junctor are respectively equipped with protruding block and the second lower convexity block on second, on described second protruding block and
Protrusion perforation and the perforation of the second lower convexity, third screw on second is respectively equipped on second lower convexity block to pass through protrusion on first and wear
The first perforation, protrusion perforation on second on hole, filter screen, and be threadedly coupled by top nut, the 4th screw is under first
The second perforation, the perforation of the second lower convexity in protrusion perforation, filter screen, and be threadedly coupled by lower nut,
One end of second inlet cylinder is equipped with left connector, and the upper and lower two sides of the second inlet cylinder at the end are respectively equipped with the
The is respectively equipped in two upper air protrusions and the second lower air inlet protrusion, the second upper air protrusion and the second lower air inlet protrusion
Two upper air protrusion holes and the second lower air inlet protrusion hole, the left connector are connected with the outboard end of right connector, the end
The right upper and lower two sides of connector are respectively equipped with the second upper screwed hole, the second lower threaded hole, and the 5th screw passes through the second upper air protrusion
Hole is threaded in the second upper screwed hole, and the 6th screw passes through the second lower air inlet protrusion hole and is threaded in the second lower threaded hole
It is interior,
The first gas outlet, one end phase of first gas outlet and second exhaust pipe are equipped on the downside of the other end of second inlet cylinder
Even, the other end of the second exhaust pipe is connected with second exhaust port, and the second exhaust port is located at the dirty cylinder side that disappears
On upper wall, muti-piece filter plate is fixed in the dirty cylinder that disappears, the other side of the dirty cylinder that disappears is communicated with escape pipe.
2. a kind of automobile tail gas filtering device according to claim 1, it is characterised in that: the air inlet pipe is welded on drop
It makes an uproar at the perforation of cylinder.
3. a kind of automobile tail gas filtering device according to claim 1, it is characterised in that: the downtake pipe and
One exhaust outlet junction is equipped with sealing ring.
4. a kind of automobile tail gas filtering device according to claim 1, it is characterised in that: the two of the downtake pipe
End is respectively equipped with screw nipple, lower screw nipple, and the upper threaded connection pipe screw thread is located at first row port, and
It is fixed by upper fixture nut, lower threaded connection pipe screw thread is located at the first air inlet, and is fixed by lower fixture nut.
5. a kind of automobile tail gas filtering device according to claim 1, it is characterised in that: the left connector and right company
Sealing ring is equipped between junctor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811145210.4A CN109026312A (en) | 2018-09-28 | 2018-09-28 | A kind of automobile tail gas filtering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811145210.4A CN109026312A (en) | 2018-09-28 | 2018-09-28 | A kind of automobile tail gas filtering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109026312A true CN109026312A (en) | 2018-12-18 |
Family
ID=64614912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811145210.4A Pending CN109026312A (en) | 2018-09-28 | 2018-09-28 | A kind of automobile tail gas filtering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109026312A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3238686A1 (en) * | 1982-09-14 | 1984-03-15 | Alexandre 2000 Hamburg Theoharopoulos | Exhaust device for motor vehicles |
| US5045097A (en) * | 1988-10-31 | 1991-09-03 | J. Eberspacher | Soot filter for diesel-powered vehicles |
| US20090114477A1 (en) * | 2007-11-02 | 2009-05-07 | Honda Motor Co., Ltd. | Exhaust system for a motorcycle, and motorcycle incorporating same |
| CN104916278A (en) * | 2015-06-01 | 2015-09-16 | 广东肇庆派瑞净化设备有限公司 | Silencer used for adsorption type drier |
| CN105971707A (en) * | 2016-06-30 | 2016-09-28 | 盐城市星凯环保科技有限公司 | Noise-reducing emission-reducing exhaust pipe of motorcycle |
| CN208803891U (en) * | 2018-09-28 | 2019-04-30 | 湖州三新汽车环保科技有限公司 | A kind of automobile tail gas filtering device |
-
2018
- 2018-09-28 CN CN201811145210.4A patent/CN109026312A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3238686A1 (en) * | 1982-09-14 | 1984-03-15 | Alexandre 2000 Hamburg Theoharopoulos | Exhaust device for motor vehicles |
| US5045097A (en) * | 1988-10-31 | 1991-09-03 | J. Eberspacher | Soot filter for diesel-powered vehicles |
| US20090114477A1 (en) * | 2007-11-02 | 2009-05-07 | Honda Motor Co., Ltd. | Exhaust system for a motorcycle, and motorcycle incorporating same |
| CN104916278A (en) * | 2015-06-01 | 2015-09-16 | 广东肇庆派瑞净化设备有限公司 | Silencer used for adsorption type drier |
| CN105971707A (en) * | 2016-06-30 | 2016-09-28 | 盐城市星凯环保科技有限公司 | Noise-reducing emission-reducing exhaust pipe of motorcycle |
| CN208803891U (en) * | 2018-09-28 | 2019-04-30 | 湖州三新汽车环保科技有限公司 | A kind of automobile tail gas filtering device |
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Application publication date: 20181218 |