CN201486625U - Novel diesel engine particulate trapping device - Google Patents
Novel diesel engine particulate trapping device Download PDFInfo
- Publication number
- CN201486625U CN201486625U CN2009200175104U CN200920017510U CN201486625U CN 201486625 U CN201486625 U CN 201486625U CN 2009200175104 U CN2009200175104 U CN 2009200175104U CN 200920017510 U CN200920017510 U CN 200920017510U CN 201486625 U CN201486625 U CN 201486625U
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- filter core
- diesel engine
- exhaust gas
- center hole
- exhaust
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- Exhaust Gas After Treatment (AREA)
Abstract
The utility model relates to a diesel engine particulate trapping device, which is connected with a diesel engine exhaust pipe and comprises a shell, a filter core, a filter core clamping device, an exhaust gas flow pipe, an exhaust gas bypass pipe and a regenerative air supply pipe. The diesel engine particulate trapping device is characterized in that the filter core is made into a cylinder shape by a metal wire net and is clamped and arranged in the shell by the filter core clamping device; the exhaust gas flows into a filter center hole by the exhaust gas flow pipe, then outflows from inside to outside along the radial direction of the filter core, carries out particulate trapping and eliminates noise; the regenerative air supply pipe is arranged in the filter core center hole, is provided with holes on the pipe wall so as to lead regenerative high-temperature air flow to flow into the filter core center hole in a radial shape, then outflows from inside to outside along the radial direction of the filter core, and carries out regeneration; and if the diesel engine particulate trapping device does not regenerate in time after working for a certain time so as to cause the blocking of the filter core, and after the exhaust gas is pressed to rise, the exhaust gas bypass pipe can be opened, and the exhaust gas can outflow directly by the exhaust gas bypass pipe.
Description
1. technical field
The application has proposed a kind of novel diesel engine particulate trap device, and this device is the particulate (PM) in the rapid acquiring diesel engine vent gas efficiently, does not use catalyzer, not influenced by the diesel oil sulphur content, is fit to the fuel qualities of China's diesel oil.This device adopts the high desnity metal silk screen as the filter core main body, thereby has improved the toughness and the capture rate of device.Cooperate a kind of liquefied petroleum gas (LPG) (LPG) blowback heating equipment, the PM of capture is burnt rapidly, realize regeneration, be particularly suitable for the fixing city bus vehicle of travel route every day thereby can make filter core inside temperature after the capture reach 800 ℃ rapidly.
2. technical background
Along with the development and progress of society, vehicle has become indispensable transport facility in the daily life, particularly eighties of last century since the nineties, and diesel engine is being played the part of more and more important role in vehicle power.In, heavy-duty car power field, diesel engine occupies the status of governance, in Light-duty Vehicle power field, diesel engine is also constantly enlarging its application area with its good and economic, and low oil consumption, oligosaprobic diesel-powered car are all developed by leaps and bounds in the whole world.People more and more recognize and adopt diesel powered in the advantage that reduces aspects such as fuel consume and reduction CO2 emission.But on the other hand, the mixed gas of diesel engine forms and adopts diffusion combustion mode to determine to produce inevitably the discharging of PM, therefore is that the truck of fuel and the black smoke of city bus discharge have become one of primary pollution source of city atmospheric environment with diesel oil.
Because diesel engine nitrogen oxide (NO
x) and PM between Trade-off relation, therefore two kinds of technology paths have appearred in the purified treatment at two big pollutants of diesel engine.Adopt of Europe reduced PM more in machine, install selective catalytic reduction (SCR) after-treatment device then additional and purify NO outside machine
xThe U.S., Japan then adopt and reduce NO in cylinders
x, outside machine, install diesel engine particulate trap device (DPF) then additional and purify PM.Because national diesel oil sulphur content such as U.S., day are very low, therefore can adopt the wall-flow type DPF that contains catalyst coat to realize the cyclic regeneration of DPF with the combustion temperature that reduces PM.And China is at present except that minority big cities such as Beijing, Shanghai, Guangzhou, the Sulpher content severe overweight of the diesel oil of other most of city and area supply, perplex always and limited the real enforcement of China state III Abgasgesetz, more can't use the DPF that contains catalyzer.
All bag-type smoke-reducing devices of domestic report and adopt the DPF etc. of ceramic element all also to have all deficiencies before key makes eye bright, and also do not see these DPF products of really putting into operation on the Domestic market.For this reason, the application has carried a kind of novel diesel engine particulate trap device (DPF), and it adopts the high desnity metal silk screen as capturing filter core, cooperates a kind of heating equipment to realize regeneration, guarantees continuous operation.
3. summary of the invention
The utility model proposes a kind of diesel engine particulate trap device, be used for reducing the content of exhaust emissions of diesel engine PM.This device is connected with Diesel Engine Exhaust Pipe, is made up of housing, filter core, filter core holding device, exhaust flow siphunculus, exhaust gas bypass pipe, regeneration ajutage.
Filter core is made tubular by wire gaze, and along filter core radially from inside to outside wire net mesh number and porosity ratio change gradually.Filter core is placed in the housing by the clamping of filter core holding device.
Exhaust flow siphunculus front end is connected with Diesel Engine Exhaust Pipe, and the rear end is connected with the filter core center hole, and waste gas flows into the filter core center hole through the exhaust flow siphunculus, radially flows out along filter core from inside to outside then, carries out micro particle catching in this process.
Regeneration ajutage front end is connected with reclaimer, and back segment passes the exhaust flow circulation passage and places in the filter core center hole, endcapped.The regeneration ajutage tube wall that is positioned at filter core center hole part evenly has aperture all around, and the diameter in hole flows to increase gradually along regeneration air stream.The regeneration high temperature gas flow that is produced by reclaimer flows out radially by aperture, radially flows out along filter core from inside to outside then.When high temperature gas flow is flowed through filter core, to trapping to such an extent that PM heats, make its burning, products of combustion is taken away by air-flow, realizes dpf regeneration.
If behind this catching device work certain hour, not regeneration in time causes filter core to stop up, and exhaust can be closed the exhaust flow siphunculus after being pressed and rising, and opens the exhaust gas bypass pipe, and waste gas directly flows out via the exhaust gas bypass pipe.
The utility model is the PM in the rapid acquiring diesel engine vent gas efficiently, does not use catalyzer, not influenced by the diesel oil sulphur content, is fit to the fuel qualities of China's diesel oil.And the utility model adopts the high desnity metal silk screen as the filter core main body, thereby has improved the durability and the capture rate of device.
4. description of drawings
Fig. 1 is microparticles collection device (DPF) structural drawing;
Description of reference numerals:
The 1-filter core; The 2-ajutage; The 3-housing; 4-exhaust flow siphunculus; 5-filter core center hole; The 6-aperture; The 7-ajutage of regenerating; 8-exhaust flow siphunculus; The 9-valve; 10-exhaust flow siphunculus; 11-exhaust gas bypass pipe.
5. embodiment
Below in conjunction with accompanying drawing the technical solution of the utility model is further described.
Fig. 1 is the structural representation of a kind of diesel engine particulate trap device that the utility model proposes.This device is connected with Diesel Engine Exhaust Pipe, is made up of housing (3), filter core (1), filter core holding device (2), exhaust flow siphunculus (4), exhaust flow siphunculus (8), exhaust flow siphunculus (10), exhaust gas bypass pipe (11), regeneration ajutage (7).Wherein filter core (1) is clamped in the housing (3) by filter core holding device (2).Exhaust flow siphunculus (4) front end links to each other with the diesel exhaust gas pipeline, and the rear end links to each other with housing (3) and inserts in the filter core center hole (5), works to support filter core.Exhaust flow siphunculus (8) leading portion links to each other with housing (3), and inserts and work to support filter core in the filter core center hole (5).Exhaust flow siphunculus (8) rear end links to each other with exhaust gas bypass pipe (11) front end by valve (9).Exhaust gas bypass pipe (11) rear end links to each other with exhaust flow siphunculus (10).Exhaust flow siphunculus (10) front end links to each other with housing (3), and the rear end links to each other with the diesel exhaust gas pipeline.Regeneration ajutage (7) front end links to each other with reclaimer, back segment passes exhaust flow siphunculus (8) and inserts in the filter core center hole (5), back-end closure, and evenly open aperture (6) around regeneration ajutage (7) tube wall that is positioned at filter core center hole (5), and aperture (6) diameter flows to increase gradually along regeneration air stream.
When this device carried out the PM capture, the diesel exhaust air-flow was flowed in the filter core center hole (5) by exhaust flow siphunculus (4), radially flows through filter core (1) from inside to outside along filter core (1) then.In this flow process, the PM in the diesel exhaust is captured by filter core (1) and attached to the wire surface of filter core (1), the diesel exhaust air-flow is purified; And because filter core (1) is equivalent to porous medium, have the noise elimination effect, when off-gas flows was purified, diesel exhaust noise also had decline.Diesel exhaust air-flow after the purification by the space inflow exhaust gas runner pipe (10) between filter core (1) and the housing (3), flows out through exhaust flow siphunculus (10) after flowing out filter core (1) then.
If this device stream time is long, and does not obtain regeneration, owing to too much making the diesel exhaust flow resistance, the PM that adheres on the filter core (1) increases, cause diesel exhaust gas to be pressed and rise to surpass limit value.At this moment, can open valve (9), the diesel exhaust air-flow is directly flowed out by exhaust flow siphunculus (4), filter core center hole (5), exhaust flow siphunculus (8), valve (9) exhaust gas bypass pipe (11), exhaust flow siphunculus (10).Though this moment, diesel exhaust directly flowed out, because the filter core center hole (5) of flowing through still has the part air-flow radially to flow out along filter core (1), therefore, this device still has the noise elimination effect.
When this device is regenerated, first throttle down (9), the high temperature gas flow that is produced by reclaimer flows into filter core center hole (5) by the aperture (6) on the regeneration ajutage (7).Aperture (6) diameter flows to gradually along regeneration air stream to be increased, and the high temperature gas flow that helps regenerating evenly flows into filter core center hole (5), improves regeneration efficiency.When filter core (1) radially flows through filter core (1) from inside to outside, the regeneration high temperature gas flow will make its burning attached to the heating of the PM on filter core (1) wire surface to the regeneration high temperature gas flow from filter core center hole (5), and products of combustion is taken away by the regeneration high temperature gas flow.Filter core (1) obtains regeneration.After the regeneration high temperature gas flow flows out filter core (1),, flow out through exhaust flow siphunculus (10) then by the space inflow exhaust gas runner pipe (10) between filter core (1) and the housing (3).
Claims (5)
1. diesel engine particulate trap device, comprise housing (3), filter core (1), filter core holding device (2), exhaust flow siphunculus (4,8,10), exhaust gas bypass pipe (11), regeneration ajutage (7), it is characterized in that: filter core (1) is placed in the housing (3) by filter core holding device (2) clamping; Exhaust flow siphunculus (4) front end connects Diesel Engine Exhaust Pipe, and back segment inserts in the filter core center hole (5); Regeneration ajutage (7) front end is connected with reclaimer, and back segment passes exhaust flow siphunculus (8) and inserts in the filter core center hole (5); Exhaust gas bypass pipe (11) front end is connected with exhaust flow siphunculus (8) and is separated by valve (9), and exhaust gas bypass pipe (11) rear end is connected with exhaust flow siphunculus (10).
2. diesel engine particulate trap device according to claim 1 is characterized in that: filter core (1) structure is tubular, is made by wire gaze.
3. diesel engine particulate trap device according to claim 2 is characterized in that: along filter core (1) radially from inside to outside wire net mesh number and porosity ratio change gradually.
4. diesel engine particulate trap device according to claim 1 is characterized in that: regeneration ajutage (7) diameter is less than filter core center hole (5) diameter, endcapped.
5. diesel engine particulate trap device according to claim 1 is characterized in that: the tube wall that is positioned at filter core center hole (5) part evenly has aperture (6) all around, and the diameter of aperture (6) flows to gradually along regeneration air stream and increases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200175104U CN201486625U (en) | 2009-01-08 | 2009-01-08 | Novel diesel engine particulate trapping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200175104U CN201486625U (en) | 2009-01-08 | 2009-01-08 | Novel diesel engine particulate trapping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201486625U true CN201486625U (en) | 2010-05-26 |
Family
ID=42425505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200175104U Expired - Fee Related CN201486625U (en) | 2009-01-08 | 2009-01-08 | Novel diesel engine particulate trapping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201486625U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196598A (en) * | 2014-03-17 | 2014-12-10 | 威海市天罡仪表股份有限公司 | Automobile exhaust filtering silencer |
| CN105736108A (en) * | 2016-04-17 | 2016-07-06 | 阮居高 | Smoke tube for agricultural machinery |
| CN106894862A (en) * | 2015-12-18 | 2017-06-27 | 乔英电机有限公司 | Intelligent smoke exhaust improving device |
| CN108087078A (en) * | 2017-12-01 | 2018-05-29 | 陈孜然 | A kind of exhaust pipe for vehicle |
-
2009
- 2009-01-08 CN CN2009200175104U patent/CN201486625U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196598A (en) * | 2014-03-17 | 2014-12-10 | 威海市天罡仪表股份有限公司 | Automobile exhaust filtering silencer |
| CN106894862A (en) * | 2015-12-18 | 2017-06-27 | 乔英电机有限公司 | Intelligent smoke exhaust improving device |
| CN106894862B (en) * | 2015-12-18 | 2019-04-02 | 乔英电机有限公司 | Intelligent smoke exhaust improving device |
| CN105736108A (en) * | 2016-04-17 | 2016-07-06 | 阮居高 | Smoke tube for agricultural machinery |
| CN108087078A (en) * | 2017-12-01 | 2018-05-29 | 陈孜然 | A kind of exhaust pipe for vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100526 Termination date: 20110108 |