CN201627625U - Motorcycle exhaust pipe with a plurality of catalytic converters - Google Patents
Motorcycle exhaust pipe with a plurality of catalytic converters Download PDFInfo
- Publication number
- CN201627625U CN201627625U CN2010201069073U CN201020106907U CN201627625U CN 201627625 U CN201627625 U CN 201627625U CN 2010201069073 U CN2010201069073 U CN 2010201069073U CN 201020106907 U CN201020106907 U CN 201020106907U CN 201627625 U CN201627625 U CN 201627625U
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- CN
- China
- Prior art keywords
- catalytic converter
- exhaust pipe
- tool
- putting chamber
- motorcycle exhaust
- 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.)
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Abstract
A motorcycle exhaust pipe with a plurality of catalytic converters comprises a front pipe connected with an engine exhaust port and a muffler, secondary air is guided into the front pipe and enters the muffler after being mixed with engine waste gas, the front pipe extends into the muffler to form an extension pipe, a holding chamber for holding a first catalytic converter is formed inside the extension pipe, the diameter of the first catalytic converter is smaller than that of the holding chamber, the first catalytic converter is fixed on the wall face of the holding chamber through a connector with an air passage, the rear end of the holding chamber is connected with a second catalytic converter, and a catalytic chamber inlet of the second catalytic converter is connected with the holding chamber. The motorcycle exhaust pipe guides the secondary air into the front pipe, and disposes the first catalytic converter and the second catalytic converter to be connected in parallel and provided with diameter difference inside the extension pipe extending from the front pipe into the muffler, and leads the two catalytic converters to be capable of being filled with fresh air, thereby increasing exhaust gas conversion efficiency.
Description
[technical field]
The utility model is the structure about a kind of motorcycle exhaust pipe, particularly about a kind of motorcycle exhaust pipe that disposes several Catalytic Converter.
[background technique]
In order to meet the waste gas emission standard that official formulates, the motorcycle dealer can be provided with Catalytic Converter on the exhaust emission pipe of motor engine, it is to be formed by coating catalyst in the metal cylinder, this catalyst contains palladium (Pd), platinum (Pt), rhodium precious metal elements such as (Rh) usually, purify engine exhaust according to this, and then reduce the exhaust pollution amount.Motor engine is when cold start-up; easily not exclusively produce too much harmful waste gas because of fuel combustion; therefore; in order to promote the efficient of catalytic control waste gas; usually can be in Catalytic Converter the place ahead importing secondary air when the motor engine cold start-up; the air fuel ratio of engine exhaust is improved, impel catalyst to obtain preferable working efficiency.Desire to make waste gas under the media of catalyst, to react with secondary air, then must make catalyst reach certain operating temperature begins to carry out, yet, its catalyst of the outlet pipe of above-mentioned motorcycle still has a segment distance apart from preceding pipe end, therefore waste gas is discharged the back by preceding pipe and can't directly be imported in the Catalytic Converter, its contained part heat energy is therefore ease mistake also, causes catalyst to reach (about two minutes) consuming time of a specified duration excessively of operating temperature, makes catalyst in motorcycle driving transformation efficiency extreme difference at the beginning.
For solving catalyst in the motorcycle driving problem that is difficult for reaching operating temperature at the beginning, just pipe terminal (shown in the TaiWan, China patent of Figure 1A M313722 number) before having the creator that two Catalytic Converter in series are located at, make engine 10 waste gas of motorcycle directly import Catalytic Converter 12a by preceding pipe 11,12b, avoid the ease mistake of heat energy and make catalyst promptly reach operating temperature at the beginning in motorcycle driving, the phase promotes the efficient that waste gas transforms whereby; Yet, because the Catalytic Converter 12a that general motorcycle is adopted, 12b is all cellular catalyst, be to cross Catalytic Converter 12a when air communication, can produce very important flow impedance during 12b, so with two cellular Catalytic Converter 12a, the 12b series connection, make flow impedance significantly rise, cause the extraneous secondary air of importing to enter in the outlet pipe, and by Catalytic Converter 12a, the flow of 12b reduces, cause transformation efficiency to be not so good as expection, what is more, the Catalytic Converter 12a of series connection, in the 12b kenel, air that rear Catalytic Converter 12b is passed through reduces, the heat that is discharged during catalysis have cause Catalytic Converter 12b overheated with the easy misgivings of deterioration.
Please refer to again shown in the TaiWan, China patent shown in Figure 1B I237089 number, this patent has disclosed and be connected with two Catalytic Converter 13a on the preceding pipe 11 of the outlet pipe of the engine 10 of motorcycle, 13b, just adopted at two Catalytic Converter 13a of connecting tube 14 2 ends series connection, the structural design of 13b, and secondary air imported two Catalytic Converter 13a, and in the connecting tube 14 between the 13b, the problem of and deterioration easily overheated with the back Catalytic Converter that solves above-mentioned series connection; Only this kind is at two Catalytic Converter 13a, and the technology power that installs the secondary air inlet between the 13b additional is higher, and needs accurate mould to cooperate, and technology, human cost improve relatively, more can be reflected on the product.
[model utility content]
The utility model main purpose is in the motorcycle exhaust pipe that a kind of several Catalytic Converter of tool are provided, and can import secondary air in preceding pipe and make the Catalytic Converter of at least two series connection can both obtain fresh air to transform.
The above-mentioned purpose technological means of reaching of the present utility model is for providing a kind of motorcycle exhaust pipe of several Catalytic Converter of tool, comprising an importing has the preceding pipe of secondary air and has first Catalytic Converter and the baffler of second Catalytic Converter, it comprises: this preceding pipe extends to the inner extension tube that forms of baffler, the inner putting chamber that forms of this extension tube, be provided with one first Catalytic Converter in this putting chamber, the diameter of this first Catalytic Converter is fixedly arranged on this putting chamber wall less than this putting chamber diameter and with link, this link has air-flow path, and this putting chamber rear end connects one second Catalytic Converter.
The outlet of above-mentioned this second Catalytic Converter can connect a honeycomb duct again, with the path of direct exhaust by outlet pipe.
Above-mentioned this putting chamber wall reaches or this link surface can have catalyst coating, to improve the waste gas transformation efficiency of extension tube.
Above-mentioned this first Catalytic Converter and this link are welding manner or urgent setting firmly.
Above-mentioned link can be the circular connecting plate with circular outer embolium and interior trepanning, and should the outer embolium of circle system be fixedly arranged on this putting chamber wall; This first Catalytic Converter system penetrates this interior trepanning and is set firmly.
Above-mentioned this link comprises the rectangular plate body more than two, and the two ends of each rectangular plate body are fixedly arranged on respectively on this first Catalytic Converter and this putting chamber wall, and the plate face of those rectangular plate bodys can be parallel or perpendicular to the radial cross section of this putting chamber.
Accept above-mentioned, the utility model provides a kind of motorcycle exhaust pipe of several Catalytic Converter of tool, comprising one connects the preceding pipe of engine exhaust port and is arranged at the baffler of this preceding pipe, should before in the pipe and import secondary air, this baffler inner route clapboard forms several expansion chambers, and have one first Catalytic Converter and one second Catalytic Converter in this baffler at least, it is characterized in that: this preceding pipe extends to the inner extension tube that forms of baffler, the inner putting chamber that forms of this extension tube, this putting chamber is provided with one first Catalytic Converter, the diameter of this first Catalytic Converter is fixedly arranged on this putting chamber wall less than this putting chamber diameter and with the link with air-flow path, this putting chamber rear end connects one second Catalytic Converter, and the catalyst chamber inlet of this second Catalytic Converter is connected with this putting chamber.
The motorcycle exhaust pipe of described several Catalytic Converter of tool is characterized in that: the outlet of this second Catalytic Converter is connected with a honeycomb duct.
The motorcycle exhaust pipe of described several Catalytic Converter of tool is characterized in that: this putting chamber wall has catalyst coating.
The motorcycle exhaust pipe of described several Catalytic Converter of tool is characterized in that: this link surface has catalyst coating.
The motorcycle exhaust pipe of described several Catalytic Converter of tool is characterized in that: this first Catalytic Converter and this link are that welding manner sets firmly.
The motorcycle exhaust pipe of described several Catalytic Converter of tool is characterized in that: this first Catalytic Converter and this link are that urgent mode sets firmly.
The motorcycle exhaust pipe of described several Catalytic Converter of tool, it is characterized in that: this link is the connecting plate of a circle, its have trepanning in the circular outer embolium, one and be distributed in the outer embolium of this circle with should interior trepanning between air-flow path, and embolium be fixedly arranged on this putting chamber wall outside should circle.
The motorcycle exhaust pipe of described several Catalytic Converter of tool is characterized in that: this first Catalytic Converter penetrates should being set firmly by interior trepanning of this link.
The motorcycle exhaust pipe of described several Catalytic Converter of tool is characterized in that: this link comprises the rectangular plate body more than two, and the two ends of each rectangular plate body are fixedly arranged on respectively on this first Catalytic Converter and this putting chamber wall.
The motorcycle exhaust pipe of described several Catalytic Converter of tool is characterized in that: the plate face of those rectangular plate bodys is parallel with the radial cross section of this putting chamber.
The motorcycle exhaust pipe of described several Catalytic Converter of tool is characterized in that: the plate face of those rectangular plate bodys is vertical with the radial cross section of this putting chamber.
Adopt the effect of above-mentioned technological means to be, the utility model utilization imports secondary air in preceding pipe, and stretching in the extension tube of baffler inside from preceding pipe, series connection is set and has first Catalytic Converter and second Catalytic Converter of diameter poor (pre-small post-large), make two Catalytic Converter all can inject fresh air, advance to improve the waste gas transformation efficiency.
[description of drawings]
Figure 1A illustrates the Catalytic Converter configuration schematic diagram of the outlet pipe of prior art;
Figure 1B illustrates the Catalytic Converter configuration schematic diagram of the another kind of outlet pipe of prior art;
Fig. 2 illustrates the tandem Catalytic Converter embodiment's of motorcycle exhaust pipe of the present utility model schematic perspective view;
Fig. 3 illustrates the motorcycle exhaust pipe sectional view of Fig. 2;
Fig. 4 illustrates the sectional view that the tandem Catalytic Converter of motorcycle exhaust pipe of the present utility model has honeycomb duct embodiment;
Fig. 5 illustrates the schematic representation of the putting chamber wall coating catalyst of tandem Catalytic Converter of the present utility model;
Fig. 6 illustrates the schematic representation of the link coating catalyst of tandem Catalytic Converter of the present utility model;
The link that Fig. 7 illustrates tandem Catalytic Converter of the present utility model is the schematic perspective view of circular dividing plate shape;
The link that Fig. 8 illustrates tandem Catalytic Converter of the present utility model is the schematic perspective view that is parallel to this rectangular plate body in putting chamber cross section; And
The link that Fig. 9 illustrates tandem Catalytic Converter of the present utility model for perpendicular to the schematic perspective view of this rectangular plate body in putting chamber cross section.
10 engines
Pipe before 11
12a, the 12b Catalytic Converter
13a, the 13b Catalytic Converter
14 connecting tubes
20 motorcycle exhaust pipes
21 engine exhaust ports
Pipe before 30
31 extension tubes
311 putting chambers
312 putting chamber walls
32 first Catalytic Converter
33 second Catalytic Converter
331 catalyst chambers inlet
34 links
341 air-flow paths
342 circular outer embolium
Trepanning in 343
344 connecting plates
35,35 ' the rectangular plate body
351,351 ' plate face
36 honeycomb ducts
40 bafflers
41 dividing plates
42 expansion chambers
The A secondary air
The B catalyst coating
[embodiment]
Now cooperate graphic the utility model embodiment to be described in detail as follows, its appended graphic schematic representation that is simplification only illustrates basic structure of the present utility model in a schematic way.Therefore in these diagrams, only indicate the element relevant with the utility model, and shown element is not, and number when implementing, shape, dimension scale etc. are drawn, specification during its actual enforcement is real to be a kind of optionally design, and its component placement form might be more complicated, closes earlier and state clearly.
Please refer to the tandem Catalytic Converter embodiment's of the motorcycle exhaust pipe of the present utility model that Fig. 2 illustrates schematic perspective view, and the motorcycle exhaust pipe sectional view of the present utility model that Fig. 3 illustrated.The motorcycle exhaust pipe 20 of present embodiment comprises the baffler 40 that a preceding pipe 30, that connects engine exhaust port 21 is arranged at this preceding pipe 30.Should secondary air A be arranged preceding pipe 30 interior importings, make this secondary air A mix engine institute waste discharge gas and enter among this baffler 40, these baffler 40 inner route clapboards 41 form several expansion chambers, and should extend to baffler 40 inside and form an extension tube 31 by preceding pipe 30, these extension tube 31 inner putting chambers 311 that form, one first Catalytic Converter 32 is set in this putting chamber 311, the diameter of this first Catalytic Converter 32 is less than the diameter of this putting chamber 311, and is installed on this putting chamber wall 312 with a link 34 with air-flow path 341.The rear end of this putting chamber 311 connects one second Catalytic Converter 33, and the catalyst chamber inlet 331 of this second Catalytic Converter 33 is connected with this putting chamber 311.Certainly, outlet in second Catalytic Converter 33 can connect a honeycomb duct 36 again, to guide air-flow that this second Catalytic Converter 33 discharges to the desired position (sectional view that has honeycomb duct embodiment as the tandem Catalytic Converter of the motorcycle exhaust pipe of the present utility model that Fig. 4 was illustrated).
In the foregoing description, owing to should precedingly manage the fresh air that has been imported into secondary air A in 30, this secondary air A enters after the putting chamber 311, the fresh air of part can directly enter in first Catalytic Converter 32 and transform, and by the waste gas of its rear exit outflow through transforming for the first time, simultaneously, because the diameter of this first Catalytic Converter 32 is less than the diameter of this putting chamber 311, therefore the fresh air of part can be via these first Catalytic Converter, 32 outsides, air-flow path 341 by this link 34 enters in the catalyst chamber inlet 331 of this second Catalytic Converter 33, therefore this second Catalytic Converter 33 both can be done secondary treatment to the gas that this first Catalytic Converter 32 was handled, also can sneak into simultaneously the fresh air of part, this will help the lifting of transformation efficiency.
The schematic representation of the putting chamber wall coating catalyst of the tandem Catalytic Converter of the present utility model that please refer to Fig. 5 again and illustrated, and the schematic representation of the link of the tandem Catalytic Converter of the present utility model that Fig. 6 illustrated coating catalyst.In the aforementioned embodiment, wherein, can in this putting chamber 311, can touch the position of waste gas further, as this putting chamber wall 312 and/or at the surface coated catalyst coating B of this link 34 for the catalyst transformation efficiencies in the putting chamber 311 are more promoted.
The mode of this first Catalytic Converter 32 in this putting chamber 311 that set firmly that is adopted in the utility model is to use a connection piece 34 for it, the mode of setting firmly of itself and this first Catalytic Converter can be used welding manner, or utilizes the appearance of this link 34 to fix in urgent mode.It is continuous that to see also the link that Fig. 7 illustrates tandem Catalytic Converter of the present utility model be the schematic perspective view of circular dividing plate shape.In the present embodiment, this link 34 can be the connecting plate 344 of a circle, it has trepanning 343 in the circular outer embolium 342, one and is laid in therebetween air-flow path 341, and this circle embolium 342 outward is corresponding to the cross section appearance of this putting chamber wall 312 and is fixedly arranged on this putting chamber wall 312; And should in trepanning 343 be to penetrate and fixed it for this first Catalytic Converter 32.
Please contrast link that Fig. 8 illustrates tandem Catalytic Converter of the present utility model again and be the schematic perspective view that is parallel to this rectangular plate body in putting chamber cross section.In the present embodiment, link 34 is the rectangular plate body 35 more than two, the two ends of each rectangular plate body 35 are fixedly arranged on respectively on these first Catalytic Converter, 32 external diameters and this putting chamber wall 312, and the plate face 351 of those rectangular plate bodys 35 is parallel to the radial cross section with this putting chamber 311; Or the link that illustrates tandem Catalytic Converter of the present utility model with reference to Fig. 9 for perpendicular to the embodiment of the schematic perspective view of this rectangular plate body in putting chamber cross section, the plate face 351 ' of those rectangular plate bodys 35 ' forms an angle as 90 degree with the radial cross section of this putting chamber 311.
In the foregoing description, its characteristics are: the utility model can be taken over existing secondary air guiding structure, among pipe before the secondary air importing, and also do not set up the secondary air introduction hole between the tandem Catalytic Converter in hush pipe, its structure is simple relatively; And the utility model utilization imports secondary air in preceding pipe, and stretching in the extension tube of baffler inside from preceding pipe, first Catalytic Converter and second Catalytic Converter of connecting and having the diameter difference are set, make two Catalytic Converter all can inject fresh air, improve the waste gas transformation efficiency, avoid second overheated and deterioration of Catalytic Converter.
In sum, be that only the notebook model utility is better embodiment or the embodiment who presents the technological means that adopted of dealing with problems, be not the scope that is used for limiting the utility model patent working.Be allly to conform to, or change and modify, be all the utility model claim and contain according to the equalization that the utility model claim is done with the utility model patent claim context.
Claims (11)
1. the motorcycle exhaust pipe of several Catalytic Converter of tool, comprising one connects the preceding pipe of engine exhaust port and is arranged at the baffler of this preceding pipe, should import secondary air in the preceding pipe, this baffler inner route clapboard forms several expansion chambers, and have one first Catalytic Converter and one second Catalytic Converter in this baffler at least, it is characterized in that:
Should extend to the inner extension tube that forms of baffler by preceding pipe, the inner putting chamber that forms of this extension tube, this putting chamber is provided with one first Catalytic Converter, the diameter of this first Catalytic Converter is fixedly arranged on this putting chamber wall less than this putting chamber diameter and with the link with air-flow path, this putting chamber rear end connects one second Catalytic Converter, and the catalyst chamber inlet of this second Catalytic Converter is connected with this putting chamber.
2. the motorcycle exhaust pipe of several Catalytic Converter of tool as claimed in claim 1 is characterized in that: the outlet of this second Catalytic Converter is connected with a honeycomb duct.
3. the motorcycle exhaust pipe of several Catalytic Converter of tool as claimed in claim 1 is characterized in that: this putting chamber wall has catalyst coating.
4. the motorcycle exhaust pipe of several Catalytic Converter of tool as claimed in claim 1 is characterized in that: this link surface has catalyst coating.
5. the motorcycle exhaust pipe of several Catalytic Converter of tool as claimed in claim 1 is characterized in that: this first Catalytic Converter and this link are that welding manner sets firmly.
6. the motorcycle exhaust pipe of several Catalytic Converter of tool as claimed in claim 1 is characterized in that: this first Catalytic Converter and this link are that urgent mode sets firmly.
7. the motorcycle exhaust pipe of several Catalytic Converter of tool as claimed in claim 1, it is characterized in that: this link is the connecting plate of a circle, its have trepanning in the circular outer embolium, one and be distributed in the outer embolium of this circle with should interior trepanning between air-flow path, and embolium be fixedly arranged on this putting chamber wall outside should circle.
8. the motorcycle exhaust pipe of several Catalytic Converter of tool as claimed in claim 7 is characterized in that: this first Catalytic Converter penetrates should being set firmly by interior trepanning of this link.
9. the motorcycle exhaust pipe of several Catalytic Converter of tool as claimed in claim 1 is characterized in that: this link comprises the rectangular plate body more than two, and the two ends of each rectangular plate body are fixedly arranged on respectively on this first Catalytic Converter and this putting chamber wall.
10. the motorcycle exhaust pipe of several Catalytic Converter of tool as claimed in claim 9 is characterized in that: the plate face of those rectangular plate bodys is parallel with the radial cross section of this putting chamber.
11. the motorcycle exhaust pipe of several Catalytic Converter of tool as claimed in claim 9 is characterized in that: the plate face of those rectangular plate bodys is vertical with the radial cross section of this putting chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201069073U CN201627625U (en) | 2010-01-27 | 2010-01-27 | Motorcycle exhaust pipe with a plurality of catalytic converters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201069073U CN201627625U (en) | 2010-01-27 | 2010-01-27 | Motorcycle exhaust pipe with a plurality of catalytic converters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201627625U true CN201627625U (en) | 2010-11-10 |
Family
ID=43059019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201069073U Expired - Fee Related CN201627625U (en) | 2010-01-27 | 2010-01-27 | Motorcycle exhaust pipe with a plurality of catalytic converters |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201627625U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2891778A1 (en) * | 2013-12-04 | 2015-07-08 | Honda Motor Co., Ltd. | Exhaust system for motorcycle with catalyst inside of silencer |
| CN106677865A (en) * | 2015-11-11 | 2017-05-17 | 赖宜铭 | Metal carrier and catalytic converter device for diesel engine |
-
2010
- 2010-01-27 CN CN2010201069073U patent/CN201627625U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2891778A1 (en) * | 2013-12-04 | 2015-07-08 | Honda Motor Co., Ltd. | Exhaust system for motorcycle with catalyst inside of silencer |
| CN106677865A (en) * | 2015-11-11 | 2017-05-17 | 赖宜铭 | Metal carrier and catalytic converter device for diesel engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101110 Termination date: 20130127 |