CN103670605B - A kind of diesel engine and particulate matter trap regenerating unit thereof - Google Patents
A kind of diesel engine and particulate matter trap regenerating unit thereof Download PDFInfo
- Publication number
- CN103670605B CN103670605B CN201310566777.XA CN201310566777A CN103670605B CN 103670605 B CN103670605 B CN 103670605B CN 201310566777 A CN201310566777 A CN 201310566777A CN 103670605 B CN103670605 B CN 103670605B
- Authority
- CN
- China
- Prior art keywords
- particulate matter
- air
- regenerating unit
- matter trap
- flow
- 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.)
- Active
Links
Abstract
The invention discloses a kind of particulate matter trap regenerating unit, including: particulate matter trap; Oxidation catalytic converter; Described particulate matter trap and the longitudinally perpendicular layout of oxidation catalytic converter, described oxidation catalytic converter be connected with air-flow revolving gear (2); Described air-flow revolving gear (2) is provided with Particulate Filter (3). This device can ensure that the particulate matter load within DPF is in relatively low state all the time, it is not necessary to uses DPF active regeneration system and artificial deashing can meet after-treatment system demand. The invention also discloses the diesel engine being provided with described regenerating unit.
Description
Technical field
The present invention relates to technical field of engines, be especially applicable to the particulate matter trap regenerating unit of tail gas treatment system of diesel engine. The invention still further relates to the diesel engine being provided with described regenerating unit.
Background technology
Recently as China, environmental conservation increasingly being paid attention to, tightened up emission control regulations are put into effect in succession, are made for current motor vehicle emission for the control of diesel engine of vehicle particulate emission pollutant and realize the subject matter in Europe VI.
The exhaust particulate of diesel engine mainly comprises three kinds of compositions: unburned soot (Soot), the organic soluble materials (SolubleOrganicFractions of Adsorption on Surface, SOF) and sulfate, wherein particulate emission material major part is that the molecule of carbon and carbide forms.
DPF(DieselParticulateFilter) being the particulate matter trap of granule (PM) in a kind of elimination diesel exhaust gas, carry out the microgranule in trap filter diesel exhaust gas mainly through diffusion, deposition and shock mechanism, arresting efficiency is up to more than 90%.
DOC(DieselOxidationCatalysis) it is the oxidation catalytic converter of a kind of particulate matter, it is noble metal-coating catalyst (such as Pt etc.) on honeycomb ceramic carrier, in order that the chemical reaction activation capacity of HC in reduction diesel engine vent gas, CO and SOF, make these materials can carry out oxidation reaction with the oxygen in tail gas at a lower temperature and be eventually converted into CO2And H2O��
DPF and DOC is used in combination and may make up particle collection system, and its basic functional principle is: when diesel exhaust gas flows through DOC, and under 200-400 DEG C of temperature conditions, CO and HC is first almost all oxidized to CO2And H2O, NO is converted to NO simultaneously2, after aerofluxus exits into DPF from DOC, wherein microgranule is trapped in the filter element of filtering bodies, and the remaining aerofluxus relatively cleaned enters in air.
Lengthening along with the working time, the granule piled up in DPF filtering bodies gets more and more, not only affect the filter effect of catcher, also can increase exhaust back pressure, thus affecting ventilation and the burning of diesel engine, causing that power output reduces, oil consumption increases, and so how in time the granule processed on catcher is the key of DPF technology.
DPF is by repeating regeneration PM(particulate matter) control and maintain pressure reduction before and after certain DPF, regeneration has initiative regeneration and two kinds of methods of passive regeneration: initiative regeneration refers to the temperature utilizing outside energy to improve in catcher, makes microgranule ignition. When the temperature in filter reaches 600 DEG C, the particulate matter of deposition will oxidizing fire, if temperature does not reach 600 DEG C, too much deposit will blocking filter, at this moment it is accomplished by utilizing external energy (such as electric heater, the change of burner or engine operating condition) improve the temperature in DPF, make particulate matter burn.
Passive regeneration refers at a certain temperature, and internal NO2 and the C reaction of DPF eliminates a kind of regeneration techniques of carbon granule. NO2The granule being captured there is is very strong oxidability, utilizes the NO that DOC produces2Remove the microgranule in DPF as oxidant and generate CO2, and NO2It is reduced to again NO, thus reaching to remove the purpose of microgranule.
Traditional dpf regeneration mode needs to spray into a certain amount of fuel oil at tailpipe, is burnt by particulate matter by DOC temperature raising to 600 DEG C, and this method needs the device of a set of complexity and controls system, and needs extra oil spout, can increase the oil consumption of electromotor.
And, regeneration is merely able to burn the carbon granule within DPF, but the ash of DPF caught inside does not burn, and can cause that ash is accumulated in DPF. Although the accumulative speed of ash is very slow, but it eventually results in pressure reduction before and after DPF and rises, thus affecting the working life of DPF, so after DPF is arranged on vehicle, after certain distance travelled, along with the increase of ash accumulating value, it is necessary to DPF is carried out artificial deashing. General ash removal method is to be disassembled by DPF, is distinguished by the ash within DPF by gases at high pressure blowback or with water cleaning, very inconvenient.
Therefore, how to improve the regeneration of DPF, eliminate the DPF dependence to oil spout initiative regeneration and artificial deashing, be those skilled in the art's technical issues that need to address.
Summary of the invention
The first object of the present invention is to provide a kind of particulate matter trap regenerating unit. This device can ensure that the particulate matter load within DPF is in relatively low state all the time, it is not necessary to uses DPF active regeneration system and artificial deashing can meet after-treatment system demand.
The second object of the present invention is to provide a kind of diesel engine being provided with described particulate matter trap regenerating unit.
For realizing above-mentioned first purpose, the present invention provides a kind of particulate matter trap regenerating unit, including:
Particulate matter trap;
Oxidation catalytic converter;
Described particulate matter trap and the longitudinally perpendicular layout of oxidation catalytic converter, described oxidation catalytic converter be connected with air-flow revolving gear;
Described air-flow revolving gear is provided with Particulate Filter.
Preferably, described air-flow revolving gear includes housing;
Described housing is rounded on cross section, and the channel connection of its upper end and described oxidation catalytic converter, lower end closed, side is tangentially provided with air inlet pipe, is internally formed air-flow raceway zone.
Preferably, described Particulate Filter includes the collecting box for holding particulate matter;
Described air-flow raceway zone is connected with described collecting box by the collection mouth on its side.
Preferably, the inner bottom surface of described collecting box is lower than the plane at the place, bottom of described air-flow raceway zone.
Preferably, described collection mouth place is provided with particulate matter drainage screen.
Preferably, the bottom center place of described air-flow raceway zone is provided with the deflection cone raised up.
Preferably, the bottom of described air-flow raceway zone and side seamlessly transit in circular arc.
Preferably, described Particulate Filter is connected by demountable structure or parts with air-flow revolving gear.
Preferably, described air-flow revolving gear is integral type structure with the housing of described particulate matter trap and oxidation catalytic converter.
For realizing above-mentioned second purpose, the present invention provides a kind of diesel engine, and including engine body and exhaust-gas treatment system, described exhaust-gas treatment system is provided with the particulate matter trap regenerating unit described in any of the above-described item.
Particulate matter trap regenerating unit provided by the invention mainly includes particulate matter trap and the oxidation catalytic converter of longitudinally perpendicular layout, it is positioned at the air-flow revolving gear below oxidation catalytic converter, and it is located at the Particulate Filter of air-flow revolving gear, it can utilize the vibration of vehicle, such as vehicle travels when rough road surface at speed operation, waste gas flow velocity is little, electromotor that DPF traps produces the bulky grain thing that bigger particulate matter or small particle become at DPF accumulated inside and can come off because of the effect of automobile vibration and gravity, air-flow revolving gear is entered after DOC, and engine exhaust can be formed the air-flow of convolution disturbance by air-flow revolving gear, under the effect of aerofluxus convolution, the bulky grain thing come off from DPF is collected in Particulate Filter, there is the passive regeneration of particulate matter in the DPF internal moment simultaneously, ensure that the particulate matter load within DPF is in relatively low state all the time through both regeneration combineds effect, such that it is able to reduce initiative regeneration and the artificial deashing number of times of DPF or do not adopt initiative regeneration or artificial deashing, thus reducing the oil consumption of diesel engine, improve the reliability of DPF.
In a kind of preferred version, the inner bottom surface of described collecting box is lower than the plane at the place, bottom of described air-flow raceway zone. In this manner it is ensured that the carbon soot particles dropped enters collecting box under the effect of rotary centrifugal force, make granule enter in collecting box simultaneously and will not be again introduced in aerofluxus.
In another kind of preferred version, the bottom center place of described air-flow raceway zone is provided with the deflection cone raised up. This deflection cone can pass through bottom and the side formation annular air-flow path of its conical surface and air-flow raceway zone on the one hand, thus being beneficial to aerofluxus to form the air-flow of convolution disturbance, the evengranular circumferential distribution to gyration airflow that its conical surface can will fall off on the other hand, so that the entrance Particulate Filter that granule can be more prone to.
Diesel engine provided by the invention is provided with described particulate matter trap regenerating unit, and owing to described particulate matter trap regenerating unit has above-mentioned technique effect, the diesel engine being provided with this particulate matter trap regenerating unit also possesses corresponding technique effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of detailed description of the invention of particulate matter trap regenerating unit provided by the present invention;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is the A-A view of Fig. 1;
Fig. 4 is the B-B view of Fig. 3;
Fig. 5 is the axonometric chart of air-flow revolving gear shown in Fig. 1;
Fig. 6 is the operation principle schematic diagram of particulate matter trap regenerating unit shown in Fig. 1;
Fig. 7 is the structural representation of another kind of Particulate Filter.
In figure:
1. air inlet pipe 2. air-flow revolving gear 2-1. air-flow raceway zone 2-2. deflection cone 3. Particulate Filter 3-1 collecting box 3-2 particulate matter drainage screen 4.DOC5.DPF6. escape pipe
Detailed description of the invention
In order to make those skilled in the art be more fully understood that the present invention program, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Refer to the structural representation of a kind of detailed description of the invention that Fig. 1 to Fig. 5, Fig. 1 are particulate matter trap regenerating unit provided by the present invention; Fig. 2 is the top view of Fig. 1; Fig. 3 is the A-A view of Fig. 1; Fig. 4 is the B-B view of Fig. 3; Fig. 5 is the axonometric chart of air-flow revolving gear shown in Fig. 1.
In a kind of detailed description of the invention, diesel particulate catcher regeneration device provided by the invention, mainly being made up of air inlet pipe 1, air-flow revolving gear 2, Particulate Filter 3, DOC4, DPF5 and escape pipe 6, wherein DPF5 can adopt honeycomb ceramic filter filter.
The housing of air-flow revolving gear 2 and DOC4, DPF5 is integral type structure, cylindrical on the whole, the longitudinally perpendicular layout of three, and DPF5 is positioned at top, and DOC4 is centrally located, and air-flow revolving gear 2 is positioned at bottom, and is provided with Particulate Filter 3.
The housing of air-flow revolving gear 2 is rounded on cross section, the channel connection of its upper end and DOC4, lower end closed, side is tangentially provided with air inlet pipe 1, is internally formed air-flow raceway zone 2-1, and air-flow tangentially enters housing through air inlet pipe 1 under pressure, gyration is done in shell, particulate matter in air-flow is in the periphery of rotary current because being subject to bigger centrifugal force, eventually enters into Particulate Filter 3, and escape pipe 6 is tangentially located at the exhaust end of DPF5.
The bottom of air-flow raceway zone 2-1 and side seamlessly transit in circular arc, and are provided with the deflection cone 2-2 raised up in centre. This deflection cone 2-2 mono-aspect can pass through bottom and the side formation annular air-flow path of its conical surface and air-flow raceway zone 2-1, thus being beneficial to aerofluxus to form the air-flow of convolution disturbance, the evengranular circumferential distribution to gyration airflow that its conical surface can will fall off on the other hand, so that the entrance Particulate Filter 3 that granule can be more prone to.
Particulate Filter 3 adopts the collecting box 3-1 that can hold particulate matter, and air-flow raceway zone is connected with collecting box by the collection mouth on its side, and is provided with particulate matter drainage screen 3-2 collecting mouth place.
The plane at the inner bottom surface of the collecting box 3-1 place, bottom lower than air-flow raceway zone 2-1. In this manner it is ensured that the carbon soot particles dropped enters collecting box 3-1 under the effect of rotary centrifugal force, make granule enter in collecting box 3-1 simultaneously and will not be again introduced in aerofluxus.
Additionally, collecting box 3-1 is connected by demountable structure or parts with air-flow revolving gear 2. When carbon soot particles is collected after to a certain degree, collecting box 3-1 is conveniently detachable carries out cleaning work.
It is of course also possible to clear up by offering the mode of floss hole on collecting box 3-1, without dismounting deashing.
Refer to the operation principle schematic diagram that Fig. 6, Fig. 6 are particulate matter trap regenerating unit shown in Fig. 1.
As it can be seen, the tail gas that engine emission goes out enters in diesel filter device through air inlet pipe 1, initially enter air-flow revolving gear 2, form the air-flow of convolution disturbance immediately, subsequently in DOC4, noble metal-coating catalyst on DOC4 carrier, it is possible to NO in tail gas is oxidized to NO2; Waste gas enters in DPF5 after DOC4, and DPF5 carrier is one end perforate, and the ceramic monolith that the other end is closed, air-flow passes through from wall, and the particulate matter in waste gas is owing to cannot be deposited on wall by wall, thus playing the effect of trap particulate matter.
Along with particle collection getting more and more at DPF5 accumulated inside, it is necessary in real time the carbon carrying capacity of DPF5 inner accumulation is eliminated.Diesel filter system and the device of present invention design can realize two kinds of regenerations:
1.DPF5 passive regeneration: by the internal NO of DPF52Eliminating carbon granule with the C chemical reaction occurred, this regeneration is in real time at DPF5 internal-response.
2. in vehicle traveling process, DPF5 vibrates because of the excitation on electromotor and road surface, in DPF5, the particulate matter of trapping can because vibration comes off from catcher, drop to from the passage of DOC4 under gravity in air-flow revolving gear 2, now aerofluxus drives the granule dropped to rotate in air-flow revolving gear high speed, and granule enters in Particulate Filter 3 under the influence of centrifugal force.
Both the above regeneration occurs simultaneously, and combined effect ensures that the particulate matter load within DPF5 is in relatively low state all the time, it is not necessary to use DPF active regeneration system can meet after-treatment system regeneration requirements.
It should be noted that, in order to ensure that the present invention can realize the 2nd kind of regeneration, said apparatus must vertically fixedly mount, the layout design of DOC4 and DPF5 to meet arrangement requirement, guarantee system is under the premise not being vibrated destruction, the oscillation intensity of raising system as far as possible, to improve particulate collection efficiency.
Ash within DPF5 can be shaken off by vibration by this device, collect in Particulate Filter 3 under the effect of air-flow, without DPF oil spout initiative regeneration, it is absent from above-mentioned oil spout regeneration Problems existing, without periodic cleaning ash, avoid regular deashing and bring the inconvenience in use, have great convenience for the user to use.
Certainly, above-described embodiment is only the preferred version of the present invention, is specifically not limited thereto, and can make pointed adjustment on this basis according to actual needs, thus obtaining different embodiments. As shown in Figure 7, collecting box 3-1 can be divided into lateral part and longitudinal component, collect mouth and be positioned at the left end of its lateral part, the longitudinal component right-hand member in lateral part is attached thereto logical, make collection mouth and particulate matter deposition portion stagger certain distance, the particulate matter collected so significantly more efficient can be prevented to be again introduced in aerofluxus; Or, according to needing of installing, the Particulate Filter 3 position on air-flow revolving gear side is adjusted, etc. Owing to mode in the cards is more, just no longer illustrate one by one here.
Except above-mentioned particulate matter trap regenerating unit, the present invention also provides for a kind of diesel engine, and including engine body and exhaust-gas treatment system, described exhaust-gas treatment system is provided with particulate matter trap regenerating unit mentioned above, all the other structures refer to prior art, repeats no more herein.
Above particulate matter trap regenerating unit provided by the present invention and diesel engine are described in detail. Principles of the invention and embodiment are set forth by specific case used herein, and the explanation of above example is only intended to help to understand the core concept of the present invention. It should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention, it is also possible to the present invention carries out some improvement and modification, these improve and modify in the protection domain also falling into the claims in the present invention.
Claims (8)
1. a particulate matter trap regenerating unit, including:
Particulate matter trap;
Oxidation catalytic converter;
It is characterized in that, described particulate matter trap and the longitudinally perpendicular layout of oxidation catalytic converter, described oxidation catalytic converter be connected with air-flow revolving gear (2);
Described air-flow revolving gear (2) is provided with Particulate Filter (3);
Described air-flow revolving gear (2) includes housing;
Described housing is rounded on cross section, the channel connection of its upper end and described oxidation catalytic converter, lower end closed, and side is tangentially provided with air inlet pipe (1), is internally formed air-flow raceway zone (2-1);
The bottom center place of described air-flow raceway zone (2-1) is provided with the deflection cone (2-2) raised up.
2. particulate matter trap regenerating unit according to claim 1, it is characterised in that described Particulate Filter (3) includes the collecting box (3-1) for holding particulate matter;
Described air-flow raceway zone (2-1) is connected with described collecting box (3-1) by the collection mouth on its side.
3. particulate matter trap regenerating unit according to claim 2, it is characterised in that the inner bottom surface of described collecting box (3-1) is lower than the plane at the place, bottom of described air-flow raceway zone (2-1).
4. particulate matter trap regenerating unit according to claim 3, it is characterised in that described collection mouth place is provided with particulate matter drainage screen (3-2).
5. the particulate matter trap regenerating unit according to any one of Claims 1-4, it is characterised in that the bottom of described air-flow raceway zone (2-1) and side seamlessly transit in circular arc.
6. the particulate matter trap regenerating unit according to any one of Claims 1-4, it is characterised in that described Particulate Filter (3) is connected by demountable structure or parts with air-flow revolving gear (2).
7. particulate matter trap regenerating unit according to claim 6, it is characterised in that the housing of described air-flow revolving gear (2) and described particulate matter trap and oxidation catalytic converter is integral type structure.
8. a diesel engine, including engine body and exhaust-gas treatment system, it is characterised in that described exhaust-gas treatment system is provided with the particulate matter trap regenerating unit described in any one of the claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310566777.XA CN103670605B (en) | 2013-11-14 | 2013-11-14 | A kind of diesel engine and particulate matter trap regenerating unit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310566777.XA CN103670605B (en) | 2013-11-14 | 2013-11-14 | A kind of diesel engine and particulate matter trap regenerating unit thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103670605A CN103670605A (en) | 2014-03-26 |
| CN103670605B true CN103670605B (en) | 2016-06-08 |
Family
ID=50309267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310566777.XA Active CN103670605B (en) | 2013-11-14 | 2013-11-14 | A kind of diesel engine and particulate matter trap regenerating unit thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103670605B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104343503A (en) * | 2014-10-25 | 2015-02-11 | 陈建红 | Automobile tail gas filtering device adopting cold air |
| CN105134345B (en) * | 2015-08-31 | 2018-04-06 | 洛阳市华宝非金属材料有限公司 | A kind of particle trap for diesel engine |
| CN105833645B (en) * | 2016-05-05 | 2022-07-29 | 深圳市威尔仕机电有限公司 | Waste gas treatment equipment and method |
| TWI762502B (en) * | 2016-08-08 | 2022-05-01 | 美商淨化空氣工程海事股份有限公司 | Emissions reduction systems and emissions reduction methods |
| CN109187932A (en) * | 2018-09-29 | 2019-01-11 | 潍柴动力股份有限公司 | A kind of machine oil quality detecting method and device |
| CN114738096B (en) * | 2022-04-13 | 2023-06-09 | 淄博青禾检测科技有限公司 | Carbon loading calculation system of heavy diesel vehicle particle catcher |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2719786A1 (en) * | 1994-05-13 | 1995-11-17 | Peugeot | Combustion reactor for soot in a compression-ignition engine exhaust filter |
| FR2893667A1 (en) * | 2005-11-24 | 2007-05-25 | Renault Sas | Particle trapping filter, for e.g. diesel engine, has cylindrical shaped body, inlet pipe, and exhaust pipe in which exhaust gas is set in rotation at inlet in inlet pipe, where inlet pipe is helical in shape |
| CN202596844U (en) * | 2012-03-16 | 2012-12-12 | 南通海升船舶设备制造有限公司 | Marine diesel engine exhaust purification silencer |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5218334Y2 (en) * | 1972-07-31 | 1977-04-25 | ||
| JP2002242658A (en) * | 2001-02-21 | 2002-08-28 | Isuzu Motors Ltd | Particulate removing device for diesel engine |
| WO2011031192A1 (en) * | 2009-09-14 | 2011-03-17 | Volvo Lastvagnar Ab | Particle trap and filter device comprising a particle trap |
| JP2013221463A (en) * | 2012-04-17 | 2013-10-28 | Daiko Sangyo:Kk | Denitration catalyst unit inserted type muffler |
-
2013
- 2013-11-14 CN CN201310566777.XA patent/CN103670605B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2719786A1 (en) * | 1994-05-13 | 1995-11-17 | Peugeot | Combustion reactor for soot in a compression-ignition engine exhaust filter |
| FR2893667A1 (en) * | 2005-11-24 | 2007-05-25 | Renault Sas | Particle trapping filter, for e.g. diesel engine, has cylindrical shaped body, inlet pipe, and exhaust pipe in which exhaust gas is set in rotation at inlet in inlet pipe, where inlet pipe is helical in shape |
| CN202596844U (en) * | 2012-03-16 | 2012-12-12 | 南通海升船舶设备制造有限公司 | Marine diesel engine exhaust purification silencer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103670605A (en) | 2014-03-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103670605B (en) | A kind of diesel engine and particulate matter trap regenerating unit thereof | |
| JP4413777B2 (en) | System for reducing pollutants in diesel engine exhaust gas | |
| JP4659981B2 (en) | Improvements in emission control | |
| KR101583540B1 (en) | Particulate exhaust reduction device for generator | |
| CN105402007A (en) | Box type post processing assembly for diesel vehicle | |
| CN204457948U (en) | Exhaust aftertreatment assembly device | |
| KR20110117323A (en) | Diesel engine exhaust gas purification device having ammonia decomposition module | |
| CN106401703A (en) | Tail gas purification system and tail gas purification method for diesel generator set | |
| CN103883380A (en) | Method and system for controlling exhaust gas temperature of engine | |
| CN203925695U (en) | The control system of engine exhaust temperature | |
| JP3959611B2 (en) | Exhaust gas purification device for internal combustion engine | |
| JP4762560B2 (en) | Filter for removing particulate matter in exhaust gas and exhaust gas purification method | |
| CN205445736U (en) | Electrostatic tail -gas clean -up entrapment device | |
| KR20110101277A (en) | An emission apparatus for diesel engine exhaust gas | |
| JP6020105B2 (en) | Diesel engine exhaust gas purification method and exhaust gas purification system | |
| CN208010431U (en) | A kind of diesel engine exhaust gas purification device | |
| CN112901312B (en) | Diesel engine exhaust purification treatment device and method | |
| CN206477898U (en) | Heating-type diesel tailstock Flash Gas Compression Skid System | |
| JP2005288362A (en) | Diesel engine exhaust gas purification apparatus | |
| CN205605284U (en) | Drip irrigation formula reduction catalyst blast pipe | |
| JP3600582B2 (en) | Method and apparatus for treating engine exhaust gas | |
| JP4220142B2 (en) | Exhaust gas treatment equipment | |
| KR101316878B1 (en) | Exhaust gas filter | |
| CN204024776U (en) | A kind of exhaust gas post-treatment device with waste gas ejecting | |
| KR102403943B1 (en) | Particulate exhaust reduction device for generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |