CN202266319U - Post-processor connecting tube structure with resonance holes - Google Patents
Post-processor connecting tube structure with resonance holes Download PDFInfo
- Publication number
- CN202266319U CN202266319U CN2011203737261U CN201120373726U CN202266319U CN 202266319 U CN202266319 U CN 202266319U CN 2011203737261 U CN2011203737261 U CN 2011203737261U CN 201120373726 U CN201120373726 U CN 201120373726U CN 202266319 U CN202266319 U CN 202266319U
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- China
- Prior art keywords
- connecting tube
- post
- resonance holes
- gas
- resonance
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- 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.)
- Expired - Lifetime
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- Exhaust Gas After Treatment (AREA)
- Exhaust Silencers (AREA)
Abstract
The utility model relates to a post-processor connecting tube structure with resonance holes. The post-processor connecting tube structure is characterized in that the connecting tube is a tapered tube with an included angle of 40 degrees, wherein resonance holes are uniformly distributed on the wall of the tapered tube; and one end of the connecting tube is connected with a cylindrical package carrier in series. The post-processor connecting tube structure has the positive effects that: a, engine exhausted gas can be uniformly distributed to the gas inlet end surface of the carrier after the connecting tube with the included angle of 40 degrees and the resonance holes is connected with the gas inlet end of the cylindrical package carrier, so that the flowing uniformity of the gas inside the carrier and the high-efficiency work of the catalyst can be ensured. Simultaneously, resonance holes are arranged on the connecting tube to form a resonance cavity with the post-processor assembly, so that the gas exhaustion noise can be reduced; b, the regeneration noise generated by the engine exhausted gas can be reduced after the connecting tube with the included angle of 40 degrees and the resonance holes is connected with the gas outlet end of the cylindrical package carrier; simultaneously, the resonance holes are arranged on the connecting tube to form a resonance cavity with the post-processor assembly, so that the gas exhaustion noise can be reduced.
Description
Technical field
The utility model relates to a kind of preprocessor connecting tube structure with the resonance hole, particularly is used for a kind of preprocessor connecting tube structure with the resonance hole of cylindrical preprocessor package carrier assembly, belongs to the auto manufacturing field.
Background technique
At present, domestic commercial car is about to carry out the IV stage Abgasgesetz of GB 17691 or GB 18352.3, and taking the outer exhaust preprocessor cleaning of off-gas of motor machine is its mainstream technology route.
Summary of the invention
The purpose of the utility model is to provide a kind of preprocessor connecting tube structure with the resonance hole, and it had both guaranteed under the inhomogeneity prerequisite of reprocessing carrier flow, can form a resonant cavity that reduces noise with post-processor assembly again.
The utility model technological scheme is achieved in that the preprocessor connecting tube structure in band resonance hole, it is characterized in that: connecting tube is the conical pipe of angle 40 degree, on the taper tube wall, is evenly equipped with the resonance hole; One end and columniform package carrier are connected in series.
The good effect of the utility model is a connecting tube of working as angle 40 degree band resonance holes with after cylindrical encapsulation carrier inlet end is connected; Can make engine exhaust be evenly distributed to carrier air inlet end face, guarantee the flow uniformity of carrier inside air inlet and the efficient operation of catalyzer.Connecting tube has the resonance hole simultaneously, forms a resonant cavity with post-processor assembly, can reduce exhaust sound.
B when the connecting tube in angle 40 degree band resonance holes with after cylindrical encapsulation carrier outlet side is connected, can reduce the regenerated noise that engine exhaust produces, connecting tube has the hole of resonating simultaneously, with resonant cavity of post-processor assembly formation, can reduce exhaust sound.
Description of drawings
Fig. 1 is the preprocessor package carrier assembly connecting tube structural representation in band resonance hole.
Fig. 2 is the structural representation that connecting tube is connected with the outlet side.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further description; As shown in Figure 1, the preprocessor connecting tube structure in band resonance hole is characterized in that: connecting tube 1 is the conical pipe of angle 40 degree, on the taper tube wall, is evenly equipped with resonance hole 2; One end and columniform package carrier 3 are connected in series.
To be with resonance hole 2 connecting tubes, 1 its structure angle during work is that 40 degree are connected with preprocessor package carrier 3; Through having CAE to calculate and verification experimental verification, this connecting tube 1 can make engine exhaust be evenly distributed to carrier air inlet end face with after columniform package carrier 3 inlet ends are connected, and has guaranteed the flow uniformity of carrier inside air inlet and the efficient operation of catalyzer.Connecting tube has resonance hole 2 simultaneously, forms a resonant cavity with post-processor assembly, can reduce exhaust sound.
As shown in Figure 2; When the connecting tube 1 in angle 40 degree band resonance holes 2 with after columniform package carrier 3 outlet sides are connected, can reduce the regenerated noise that engine exhaust produces, while connecting tube 1 has the hole 2 of resonating; Form a resonant cavity with post-processor assembly, can reduce exhaust sound.
Claims (1)
1. be with the preprocessor connecting tube structure in resonance hole, it is characterized in that: connecting tube is the conical pipe of angle 40 degree, on the taper tube wall, is evenly equipped with the resonance hole; One end and columniform package carrier are connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203737261U CN202266319U (en) | 2011-09-27 | 2011-09-27 | Post-processor connecting tube structure with resonance holes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203737261U CN202266319U (en) | 2011-09-27 | 2011-09-27 | Post-processor connecting tube structure with resonance holes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202266319U true CN202266319U (en) | 2012-06-06 |
Family
ID=46157117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203737261U Expired - Lifetime CN202266319U (en) | 2011-09-27 | 2011-09-27 | Post-processor connecting tube structure with resonance holes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202266319U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111542687A (en) * | 2018-01-29 | 2020-08-14 | 株式会社丰田自动织机 | Exhaust gas purification device |
-
2011
- 2011-09-27 CN CN2011203737261U patent/CN202266319U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111542687A (en) * | 2018-01-29 | 2020-08-14 | 株式会社丰田自动织机 | Exhaust gas purification device |
| US11267333B2 (en) | 2018-01-29 | 2022-03-08 | Kabushiki Kaisha Toyota Jidoshokki | Exhaust gas purification device |
| CN111542687B (en) * | 2018-01-29 | 2022-05-17 | 株式会社丰田自动织机 | Exhaust gas purification device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120606 |