CN2537825Y - Hollow throat type secondary air supply device - Google Patents
Hollow throat type secondary air supply device Download PDFInfo
- Publication number
- CN2537825Y CN2537825Y CN02227041U CN02227041U CN2537825Y CN 2537825 Y CN2537825 Y CN 2537825Y CN 02227041 U CN02227041 U CN 02227041U CN 02227041 U CN02227041 U CN 02227041U CN 2537825 Y CN2537825 Y CN 2537825Y
- Authority
- CN
- China
- Prior art keywords
- secondary air
- trunnion
- utility
- model
- exhaust gas
- 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.)
- Expired - Fee Related
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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 Venturi type secondary air supplying device. The utility model is composed of a Venturi tube and a secondary air drainage tube, which are mutually connected, therein, the Venturi tube is respectively connected with the air intake pipe and the exhaust gas pipe, a plurality of slant small holes are arranged on the Venturi tube, the secondary air drainage tube is wrapped on the outside of the Venturi tube, a rear separating plate is closed at the end in the exhaust gas pipe direction, a front separating plate is closed at the end of the air intake pipe direction, and air intake holes are arranged on the front separating plate. The utility model can be installed at the appropriate position in the exhaust gas pipeline or the exhaust gas purifying device of various vehicles, the utility model is used to provide secondary air to the vehicle exhaust gas purifying device, and CO and HC in the exhaust gas are purified through the oxidation reaction purifying. The structure of the utility model is simple, the manufacture is easy, the price is cheap, and the utility model is reliable and durable.
Description
(1) technical field
The utility model relates to automobile exhausting cleaning of emissions technical field, specifically is a kind of hollow throat type secondary air-supply device.
(2) background technique
In order to pass through CO, the HC in the oxidation reaction purifying exhausted gas of motor vehicle, must be to Exhaust gas purifying device air supplies such as thermal reactor or catalytic converters, up to now, the secondary air-supply device that is used for purifying vehicle exhaust gas both at home and abroad mainly contains two kinds: a kind of is secondary air injection system, adopts secondary air pump, secondary air control valve and injection apparatus that secondary air is sprayed in the automobile exhausting pipeline; Another kind is a pulsating air system, utilizes exhaust gas pressure pulse to pass through air-strainer, Reed Valve and control valve secondary air is sucked in the gas exhaust piping.Said apparatus all exist part more, install to be difficult for and price than problems such as height, be difficult to popularization and application in home-made machine motor vehicle exhausting gas purification field.
(3) summary of the invention
The purpose of this utility model is exactly the defective that exists in the above-mentioned prior art in order to solve, a kind of hollow throat type secondary air-supply device is provided, this device can be regulated the delivery volume of secondary air automatically according to the Motor Vehicle operation conditions, and the secondary air that sucks passed through preheating, can further improve the purification efficiency of purifying vehicle exhaust gas device to HC, CO.
The utility model is achieved by the following technical solution: it is interconnected by trunnion and secondary air drainage tube forms, wherein, trunnion is connected with suction tude and outlet pipe respectively, on trunnion, have a plurality of oblique apertures, the secondary air drainage tube is coated on the trunnion outside, it is closed with rear bulkhead at outlet pipe direction one end, is closed with preceding dividing plate at suction tude direction one end, has inlet hole on preceding dividing plate.
In order to realize the utility model better, be fixed with dust guard in the preceding dividing plate outside.
The utility model compared with prior art, have following advantage and beneficial effect: the utility model is simple in structure, and is easy to manufacture, can install to the suitable position in the automobile exhausting pipeline easily, also can directly place Exhaust gas purifying device, and low price, reliability and durability.
(4) description of drawings
Fig. 1 is a structural representation of the present utility model.
(5) embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
As shown in Figure 1, trunnion 3 is connected with suction tude 5 and outlet pipe 1 respectively, on trunnion, have 4～8 oblique apertures, secondary air drainage tube 4 is coated on trunnion 3 outsides, it is closed with rear bulkhead 2 at outlet pipe 1 direction one end, dividing plate 6 before suction tude 5 directions one end is closed with has inlet hole on preceding dividing plate 6, be fixed with dust guard 7 in preceding dividing plate 6 outsides.Trunnion is made with refractory steel, and remaining parts adopts ordinary low-carbon steel, in the trunnion everywhere the size of circulation area according to concrete vehicle and decide,
When automobile exhausting was flowed through trunnion, minimum place produced negative pressure because of the exhaust flow velocity rises suddenly at trunnion neck sectional area, thereby sucked secondary air.Because the intake of secondary air depends on that trunnion neck pressure falls and the automobile exhausting flow, when motor car engine moves under high load working condition, the intake and exhaust flow is big, the pressure of trunnion neck falls to increase and makes the secondary air amount of suction many, and the discharge amount of CO, HC is also more in exhaust this moment, just needing enough air to supply with oxidation reaction to purify CO, HC, so the utility model can also be regulated the secondary air delivery volume automatically according to the Motor Vehicle operating conditions.In addition, in the pipeline and the trunnion outside that exhaust flows into, form a mezzanine space with secondary air drainage tube and forward and backward dividing plate, this space plays a part the secondary air of inspiration is carried out preheating and the exhaust of the trunnion of flowing through is incubated, and delivery temperature is high more, oxygen is many more, it is good more to purify the effect of CO, HC by oxidation reaction, so the utility model has better function and practicability than existing secondary air-supply device.
During the utility model work, automobile exhausting flows into from suction tude, discharge by trunnion and outlet pipe, trunnion and outlet pipe, the weld seam of rear bulkhead and suction tude will guarantee to seal air tight, before the trunnion, the passage of rear section is inner conical, the centre is cylinder type, at the minimum place of neck circulation area, its sectional area is about 1/2～3/5 of the interior circulation area of outlet pipe, trunnion, suction tude, preceding dividing plate, form an insulating between rear bulkhead and the secondary air drainage tube, the secondary air that flows into through preceding dividing plate inlet hole is carried out preheating, dust guard is used to prevent a dust, particulate sucks in the blast air, when automobile exhausting was flowed through trunnion, secondary air just was inhaled in the gas exhaust piping by a plurality of oblique apertures in trunnion neck top.
Claims (4)
1. hollow throat type secondary air-supply device, it is characterized in that, it is interconnected by trunnion and secondary air drainage tube forms, wherein, trunnion is connected with suction tude and outlet pipe respectively, has a plurality of oblique apertures on trunnion, the secondary air drainage tube is coated on the trunnion outside, it is closed with rear bulkhead at outlet pipe direction one end, is closed with preceding dividing plate at suction tude direction one end, has inlet hole on preceding dividing plate.
2. hollow throat type secondary air-supply device according to claim 1 is characterized in that, is fixed with dust guard in the preceding dividing plate outside.
3. hollow throat type secondary air-supply device according to claim 1 is characterized in that the passage of the forward and backward part of trunnion is inner conical, and the centre is cylinder type.
4. hollow throat type secondary air-supply device according to claim 1 is characterized in that, the sectional area at the minimum place of trunnion neck circulation area is about 1/2～3/5 of the interior circulation area of outlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02227041U CN2537825Y (en) | 2002-04-24 | 2002-04-24 | Hollow throat type secondary air supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02227041U CN2537825Y (en) | 2002-04-24 | 2002-04-24 | Hollow throat type secondary air supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2537825Y true CN2537825Y (en) | 2003-02-26 |
Family
ID=33703909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02227041U Expired - Fee Related CN2537825Y (en) | 2002-04-24 | 2002-04-24 | Hollow throat type secondary air supply device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2537825Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102661186A (en) * | 2011-12-09 | 2012-09-12 | 东莞市祥和电子科技有限公司 | Zero point energy automobile ultralow emission device |
| CN104912626A (en) * | 2015-05-20 | 2015-09-16 | 黄钦生 | Automobile ultra-low emission device |
-
2002
- 2002-04-24 CN CN02227041U patent/CN2537825Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102661186A (en) * | 2011-12-09 | 2012-09-12 | 东莞市祥和电子科技有限公司 | Zero point energy automobile ultralow emission device |
| CN104912626A (en) * | 2015-05-20 | 2015-09-16 | 黄钦生 | Automobile ultra-low emission device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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 |