CN203547849U - Exhaust and noise reduction purifier of diesel oil engine - Google Patents
Exhaust and noise reduction purifier of diesel oil engine Download PDFInfo
- Publication number
- CN203547849U CN203547849U CN201320374544.5U CN201320374544U CN203547849U CN 203547849 U CN203547849 U CN 203547849U CN 201320374544 U CN201320374544 U CN 201320374544U CN 203547849 U CN203547849 U CN 203547849U
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- Prior art keywords
- noise reduction
- exhaust
- purifier
- engine exhaust
- diesel engine
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- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The utility model provides an exhaust and noise reduction purifier of a diesel oil engine. The purifier comprises a pre-heater and an exhaust and noise reduction purifier connected with the pre-heater, wherein a heating device is arranged in the pre-heater; an oxidation catalytic purification layer and a particle oxidation purification layer are arranged in the exhaust and noise reduction purifier at internals from an air inlet direction. The exhaust and noise reduction purifier of diesel oil engine is simply structured with low cost; and by the use of the exhaust and noise reduction purifier, exhaust of the diesel oil purifier cannot only be purified with great effect, but noise of the engine can be reduced with excellent effect.
Description
Technical field
The utility model relates to diesel motor exhaust purification plant, particularly a kind of diesel engine exhaust noise reduction purification plant.
Background technique
Diesel engine is compression ignition engine, has higher compression ratio, and its cylinder combustion temperature is lower, therefore causes the easy polymerization of imperfect combustion HC to form high molecular particulate matter (PM), is also usually said ' carbon deposit '; Meanwhile, in fuel oil, higher Sulpher content is also the important component part of particulate matter.In diesel engine vent gas purifies, must process particulate matter.
DOC(Diesel Oxidation Catalyst take (Pt, Pd) precious metal as active component) up to the present catalyzer be still diesel motor exhaust and purify the most effectively commercialization catalyzer; Its basic comprising is to select suitable carrier, support noble coatings material; This type of catalyzer, in the chemical reaction of particulate matter oxidation removal, has the advantages that ignition is fast, reaction velocity is high, the life-span is long, is that other tai-gas clean-up catalyst is irreplaceable.
The purification of prior art to particulate matter in diesel engine exhaust, generally to filter or diesel motor black smoke catalyst filter (CDPF) catalytic combustion filtration treatment by diesel particulate filter (DPF), but due to the high sulfur content of diesel oil on all many-sided reason, especially market, DPF is very easily blocked, and active dpf regeneration does not have effective technology to break through all the time.
Engine noise is the Main Noise Sources of automobile.Engine noise can be divided into again air power noise, mechanical noise and combustion noise.Air power noise mainly comprises intake and exhaust noise and fan noise.This is the noise that has caused that the vibration of air produces during due to air inlet, exhaust and fan rotation, and radiation in the direct peripherad air of this part noise, has formed our usual said noise.
Model utility content
Model utility object: the purpose of this utility model is to provide the diesel engine exhaust noise reduction purification plant of a kind of good tail gas purification effect, good muffling effect.
Technological scheme: a kind of diesel engine exhaust noise reduction purification plant that the utility model provides, comprise interconnected preheater (1) and exhausting silencer purifier (2), in described preheater (1), be provided with heating equipment (3), in described exhausting silencer purifier (2), from airintake direction, keep at a certain distance away and set gradually oxidation catalysis purifying layer (4) and particulate oxidation purifying layer (5).
As preferably, described preheater (1) is metallic netted structural.
Preferred as another kind, described oxidation catalysis purifying layer (4) is the straight-through type honeycomb ceramic carrier of the aluminum oxide coating layer of carrying metal platinum.More preferably, the order of the straight-through type honeycomb ceramic carrier of described oxidation catalysis purifying layer (4) is counted 200mesh.The straight-through type honeycomb ceramic carrier of the aluminum oxide coating layer of described carrying metal platinum is that metal platinum particles is scattered in aluminum oxide coating layer.
Preferred as another kind, described particulate oxidation purifying layer (5) is the straight-through type honeycomb ceramic carrier of the aluminum oxide coating layer of carrying metal platinum and Metal Palladium.More preferably, the order of the straight-through type honeycomb ceramic carrier of described particulate oxidation purifying layer (5) is counted 300mesh.The straight-through type honeycomb ceramic carrier of the aluminum oxide coating layer of described carrying metal platinum and Metal Palladium is that metal platinum and Metal Palladium particle are scattered in aluminum oxide coating layer.
Preferred as another kind, the quantity of described particulate oxidation purifying layer (5) is 2 to 3.
Preferred as another kind, span is 40-60mm.
Beneficial effect: the diesel engine exhaust noise reduction purification plant that the utility model provides is simple in structure, with low cost, not only can purification of diesel engine exhaust, good purification, and can greatly reduce engine noise, noise reduction is good.
The utility model sets gradually oxidation catalysis purifying layer and particulate oxidation purifying layer by keeping at a certain distance away, not only can improve purifying effect, and can play good noise reduction.After engine exhaust enters in exhausting silencer purifier, regular expansion in the interval of waste gas between oxidation catalysis purifying layer and particulate oxidation purifying layer, contraction and mixing, the aluminum oxide coating layer that simultaneously supports precious metal has certain noise reduction, therefore can eliminate most of acoustic energy of engine exhaust, thereby reach obvious noise reduction; Also can carry out ' gully ' to coating surface and process, thereby further improve noise reduction.Use the device of the present utility model can be by more than reducing noise 30dB (A), alternative traditional silencing apparatus, significantly saves cost.
This device exceedes 60% to the purifying effect of tail gas particulate matter (PM), and general straight-through type POC is no more than 40% to the purifying effect of PM; The exhaust of this device is no more than 7kPa by pressure, and its long service life, more than can reaching 1000h.
Accompanying drawing explanation
Fig. 1 is the utility model diesel engine exhaust noise reduction purification plant structural representation.
Embodiment
Below in conjunction with accompanying drawing, the utility model diesel engine exhaust noise reduction purification plant is further illustrated.
Diesel engine exhaust noise reduction purification plant, see Fig. 1, comprise interconnected preheater 1 and exhausting silencer purifier 2, in preheater 1, be provided with heating equipment 3, in exhausting silencer purifier 2, from airintake direction interval 50mm distance, set gradually oxidation catalysis purifying layer 4 and particulate oxidation purifying layer 5.In the utility model, the quantity of particulate oxidation purifying layer 5 is 2; Alternatively, also choose reasonable as required of its number, preferably 2-3; Also choose reasonable as required of span, preferably 40-60mm.
Wherein, preheater 1 is metallic netted structural; Oxidation catalysis purifying layer 4 is the straight-through type honeycomb ceramic carrier that order is counted the aluminum oxide coating layer that supports precious metal of 200mesh; Particulate oxidation purifying layer 5 is the straight-through type honeycomb ceramic carrier that order is counted the aluminum oxide coating layer that supports precious metal of 300mesh;
During use, engine exhaust containing particulate matter (PM) enters preheater 1, utilize the heating equipment 3 of preheater 1 that engine exhaust temperature is improved to 60-200 ℃, thereby can improve the removing pollutant problem in engine cold-start stage, simultaneously also guaranteed that catalyzer ignition reaches sooner, rapidly desirable working state; Engine exhaust after heating enters exhaust noise silencing purifier 2, successively by oxidation catalysis purifying layer 4 and particulate oxidation purifying layer 5, discharges after the particulate matter of part and the polymerization completely of unburned in exhaust is oxidized to carbon dioxide and water.
Claims (4)
1. a diesel engine exhaust noise reduction purification plant, it is characterized in that: comprise interconnected preheater (1) and exhausting silencer purifier (2), in described preheater (1), be provided with heating equipment (3), in described exhausting silencer purifier (2), from airintake direction, keep at a certain distance away and set gradually oxidation catalysis purifying layer (4) and particulate oxidation purifying layer (5).
2. a kind of diesel engine exhaust noise reduction purification plant according to claim 1, is characterized in that: described preheater (1) is metallic netted structural.
3. a kind of diesel engine exhaust noise reduction purification plant according to claim 1, is characterized in that: the quantity of described particulate oxidation purifying layer (5) is 2 to 3.
4. a kind of diesel engine exhaust noise reduction purification plant according to claim 1, is characterized in that: span is 40-60mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320374544.5U CN203547849U (en) | 2013-06-26 | 2013-06-26 | Exhaust and noise reduction purifier of diesel oil engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320374544.5U CN203547849U (en) | 2013-06-26 | 2013-06-26 | Exhaust and noise reduction purifier of diesel oil engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203547849U true CN203547849U (en) | 2014-04-16 |
Family
ID=50465978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320374544.5U Expired - Lifetime CN203547849U (en) | 2013-06-26 | 2013-06-26 | Exhaust and noise reduction purifier of diesel oil engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203547849U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022166A (en) * | 2019-12-29 | 2020-04-17 | 广西辉煌朗洁环保科技有限公司 | Metal foam catalytic purification silencer of automobile engine |
-
2013
- 2013-06-26 CN CN201320374544.5U patent/CN203547849U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022166A (en) * | 2019-12-29 | 2020-04-17 | 广西辉煌朗洁环保科技有限公司 | Metal foam catalytic purification silencer of automobile engine |
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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 |
Granted publication date: 20140416 |
|
| CX01 | Expiry of patent term |