CN88201252U - Silencing & purifing exhaust pipe for automobile - Google Patents
Silencing & purifing exhaust pipe for automobile Download PDFInfo
- Publication number
- CN88201252U CN88201252U CN198888201252U CN88201252U CN88201252U CN 88201252 U CN88201252 U CN 88201252U CN 198888201252 U CN198888201252 U CN 198888201252U CN 88201252 U CN88201252 U CN 88201252U CN 88201252 U CN88201252 U CN 88201252U
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- CN
- China
- Prior art keywords
- purifying
- silencing
- catalyst
- noise elimination
- elimination cavity
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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.)
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Exhaust Gas After Treatment (AREA)
Abstract
The utility model relates to a silencing and purifying exhaust device for an automobile, which comprises an air inlet pipe, an external cylinder, an inner cylinder, an exhaust tube, a silencing cavity, a silencing pipe and a purifying cavity provided with purifying catalyst. The purifying catalyst is composed of metal catalyst and rare-earth cellular catalyst. The device is provided with a silencing plate inside, and the number of the silencing cavities is at least four, and none of the volume ratio of the silencing cavities is an integer. The silencing cavity is at least provided with two silencing pipes which extend in the silencing cavity at different lengths. The utility model has a more evident purifying effect on CO and CH, as well as a clear silencing effect, and is particularly applicable for CA20 engines.
Description
The utility model is a kind of device that is used for automobile exhaust gas purifying and noise elimination.
In the exhaust of automobile, contain harmful gases such as CO, CH, directly be emitted in the atmosphere, cause environmental pollution easily.In addition, exhaust sound also works the mischief to society.To the control of the external purification and the exhaust sound of automobile exhaust, be the structure that adopts purifier and silencing apparatus split in the past.The structure of this split brings difficulty can for installation and production, simultaneously, and for also being difficult to apply in transformation with car.In order to address this problem, Chinese patent application CN85204085 has proposed a kind ofly will purify and eliminate the noise and close purifying muffler in one.This purifying muffler has been obtained certain purification noise elimination effect, but still not very good.
The purpose of this utility model provides a kind of automobile exhaust gas purifying silencing apparatus with higher purification noise elimination effect.
The utility model is achieved in that purifying muffler comprises suction tude, urceolus, inner core, outlet pipe noise elimination cavity and the purification chamber that cleaning catalyst is housed.Wherein, cleaning catalyst is made of metallic catalyst and rare earth honeycomb catalyst; Muffler plate also is housed between suction tude and the outlet pipe; Noise elimination cavity has 4 at least, and their volume ratio all is not an integer; Have at least 2 hush tubes to be installed in the noise elimination cavity, and the length that they are stretched out in noise elimination cavity is unequal.Utilize metallic catalyst and rare earth honeycomb catalyst that the good catharsis of harmful gases such as CO, CH is strengthened purifying effect.Because noise elimination cavity has 4 at least, and their volume ratio is not integer all, adds to have 2 hush tubes at least, and simultaneously, the length that hush tube is stretched out in noise elimination cavity is unequal, therefore, and the frequency band broad of noise elimination.In addition, utilize muffler plate also can improve the ability of noise elimination.
This model utility because adopted metallic catalyst and the rare earth honeycomb catalyst that combines with it therefore, purifying effect is fairly obvious.Test according to the Changchun automotive research, install purifying muffler of the present utility model additional after, during engine idling operation, the content of CO is about 0.02% in the exhaust, CH content is about 150ppm.This content is far below the maximum value (CO is 5%, and CH is 2500ppm) of the corresponding index of GB3842-83 defined.In addition, test result also shows, the utility model engine speed less than 1200 rev/mins before the noise elimination effect fairly obvious.Cleaning catalyst adopts metallic catalyst and rare earth honeycomb catalyst to combine, and is lower than simple cost with metallic catalyst.
Concrete structure of the present utility model is provided by following examples and accompanying drawing thereof.
Accompanying drawing is the generalized section according to the automobile exhaust gas purifying silencing apparatus that the utility model proposes.Do not draw installation clip among the figure.
This purifier comprises a suction tude (1), urceolus (3), inner core (4), outlet pipe (18), hush tube (5), (8) and metallic catalyst (13) is housed and the purification chamber of rare earth honeycomb catalyst (14).Can have sound attenuation hole (2) and (19) on suction tude (1) and the outlet pipe (18).The quantity of sound attenuation hole (2) can be 42, and the quantity of sound attenuation hole (19) can be 60.Above-mentioned metallic catalyst (13) is corrugation shape, can adopt ABO
8The metal purification catalyzer.And rare earth honeycomb catalyst (14) can adopt cordierite porous ceramics catalyzer.Metallic catalyst (13) is positioned between inner core (4) and the rare earth honeycomb catalyst (14).It is hush tube (5) and hush tube (8) that hush tube adopts 2.Have sound attenuation hole (7), (10) on the hush tube, and be installed on the muffler plate (9).Muffler plate (9) is welded on the inner core (4).This purifier also has a muffler plate (16) at the end near outlet pipe (18), and muffler plate (16) is welded on the urceolus (3).Metal purification catalyzer and rare earth honeycomb catalyst rely on framework (12) fixing.Purifier has 4 noise elimination cavities i.e. (6), (11), (15) and (17), and their length is respectively 220,86,18 and 175 millimeters.The length that stretch out in noise elimination cavity (6) hush tube (5), (8) is 1/2 and 1/4 of noise elimination cavity (6) length.The length of hush tube (5), (8) is respectively 134 and 100 millimeters.Suction tude (1), hush tube (5), (10), purification chamber, outlet pipe (18) are arranged successively in order.The internal diameter of suction tude (1) is 64 millimeters; The internal diameter of hush tube (5), (8) is 30 millimeters; The internal diameter of outlet pipe (18) is 50 millimeters.Steel plate with holes can be adopted in muffler plate (9), (16), and its thickness is 2 millimeters.Can open 43 holes on the muffler plate (9), the aperture is 10 millimeters, can open 139 holes on the muffler plate (16), and the aperture is 7 millimeters.The exhaust of motor car engine flows into from suction tude (1), and wherein a part is directly passed in muffler plate (9) the arrival noise elimination cavity (11), and another partly then passes hush tube (5) and (8) and arrives in the noise elimination cavities (11).The exhaust of motor car engine is filtered CO and CH by metallic catalyst and rare earth honeycomb catalyst after eliminating the noise through noise elimination cavity (6), (11) muffler plate (9) in purifying the chamber, then, in noise elimination cavity (15), muffler plate (16) and noise elimination cavity (17), eliminate the noise once more, from outlet pipe (18), discharge.This embodiment is particularly useful for the CA20 motor, is applicable to that also other is using car.
Claims (7)
1, automobile exhaust gas purifying silencing apparatus, it comprises suction tude, urceolus, inner core, outlet pipe, noise elimination cavity, hush tube and the purification chamber of cleaning catalyst is housed, it is characterized in that:
The A cleaning catalyst is made of metallic catalyst (13) and rare earth honeycomb catalyst (14);
Muffler plate (9), (16) also are housed between B suction tude and the outlet pipe;
The C noise elimination cavity has 4 (6), (11), (15), (17) at least, and their volume ratio all is not an integer;
D has at least 2 hush tubes to be installed in noise elimination cavity (6), (11), and the length that they are stretched out in noise elimination cavity (6), (11) is unequal.
2, purifying muffler according to claim 1 is characterized in that metallic catalyst (13) is ABO
8Metal purification catalyzer, rare earth honeycomb catalyst are cordierite porous ceramics catalyzer.
3, purifying muffler according to claim 2 is characterized in that metallic catalyst (13) is positioned between inner core (4) and the rare earth honeycomb catalyst (14), and metallic catalyst (13) is corrugation shape.
4,, it is characterized in that all having on suction tude and the outlet pipe sound attenuation hole (2), (19) according to claim 1,2 or 3 described purifying mufflers.
5,, it is characterized in that hush tube is 2 (5), (8), has sound attenuation hole (7), (10) on it according to claim 1,2 or 3 described purifying mufflers.
6, purifying muffler according to claim 5 is characterized in that hush tube (5), (8) are installed on the muffler plate (9), and the length that stretch out in noise elimination cavity (6) hush tube (5), (8) is 1/2 and 1/4 of noise elimination cavity (6) length.
7, purifying muffler according to claim 6 is characterized in that the arrangement in order successively of suction tude (1), hush tube (5), (10), purification chamber, outlet pipe (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN198888201252U CN88201252U (en) | 1988-02-09 | 1988-02-09 | Silencing & purifing exhaust pipe for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN198888201252U CN88201252U (en) | 1988-02-09 | 1988-02-09 | Silencing & purifing exhaust pipe for automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN88201252U true CN88201252U (en) | 1988-08-17 |
Family
ID=4836498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN198888201252U Withdrawn CN88201252U (en) | 1988-02-09 | 1988-02-09 | Silencing & purifing exhaust pipe for automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN88201252U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104246155A (en) * | 2012-04-23 | 2014-12-24 | 株式会社三和制作所 | Muffler for automobile |
-
1988
- 1988-02-09 CN CN198888201252U patent/CN88201252U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104246155A (en) * | 2012-04-23 | 2014-12-24 | 株式会社三和制作所 | Muffler for automobile |
| CN104246155B (en) * | 2012-04-23 | 2017-06-30 | 株式会社三和制作所 | Noise reducer for motor vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |