CN205445740U - It filters diesel particulate trap of body to become aperture - Google Patents
It filters diesel particulate trap of body to become aperture Download PDFInfo
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- CN205445740U CN205445740U CN201620257115.3U CN201620257115U CN205445740U CN 205445740 U CN205445740 U CN 205445740U CN 201620257115 U CN201620257115 U CN 201620257115U CN 205445740 U CN205445740 U CN 205445740U
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- inlet port
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Abstract
The utility model provides an it filters diesel particulate trap of body to become aperture, its characterized in that filters body filter core pore including filtering wall (1), the pore of admitting air (2), the pore of giving vent to anger (3) to and the inlet port blocks up piece (4) and the venthole blocks up piece (5), the thickness axial ladder that filters wall (1) reduces, and the aperture axial ladder of the pore of admitting air (2) increases, and the aperture axial of the pore of giving vent to anger (3) remains unchanged. The utility model discloses can effectively increase and filter the interior ashes bearing capacity of body opening way, improve its internal flow and distribute, it is long when extension particle trap ashes block up, and its simple structure, the production application of being convenient for.
Description
Technical field
This utility model belongs to diesel engine vent gas Particulate Emission and controls technical field, is specifically related to the diesel engine particle catcher of a kind of variable orifice footpath filtering bodies.
Background technology
Diesel engine particle catcher (DieselParticulateFilter, DPF) is maximally efficient diesel particle post processing purification techniques recognized in the world, is also one of Diesel Engine After-treatment Technology that at present commercial prospect is best.The porous media filtering bodies that particle trapper uses is the critical component in whole after-treatment system, the performance of trapping and regeneration of particle is not only had a great impact by its material and architectural characteristic, deposition characteristics and the bearing capacity of the non-combustible ash particles in arrested particles are also had a great impact by the pore passage structure of filtering bodies filter element simultaneously, and affect maintenance and the service life of diesel engine particle catcher.
The noncombustible matter can not removed by regeneration during ashes are microgranule in diesel engine particle catcher, its chemical composition mainly includes all kinds of sulfate, phosphate, metal and metal-oxide etc., it is mainly derived from each parts wear of lube oil additive, diesel fuel additives, and diesel engine and the metal fragment of exhaust system corrosion generation.Ash material ratio shared by diesel particle is the most small, but along with periodically trapping and regeneration of particle in particle trapper system work process, ash material is because can not remove by regeneration, thus is deposited in particle trapper filtering bodies duct.
Present stage has tended to ripe about particle trapper trapping mechanism and the research of regeneration techniques, diesel engine particle catcher system as a kind of after-treatment device Successful utilization in automotive field.But along with the increase of on-board running time, in duct, the ashes of accumulation can cause filtering bodies duct to block, and causes particle trapper operational failure, even affects engine work.For diesel engine particle catcher, in filtering bodies duct, the deposition quality of ashes and deposition position can have a strong impact on trapping and the reproducing characteristic of particle trapper, if filtering bodies air inlet port is blocked by ashes, gas extraction system can be caused to be sharply increased by pressure, regeneration duties particle mass and position change, regenerative process is out of control, and regeneration temperature is too high, there will be the situation of porous media Filter Core Failure or scorification time serious.
At present, the endurance issues of diesel engine particle catcher has become the bottleneck of its popularization and application.The problems such as filtering bodies blocking, breakage and scorification that during particle trapper use, ash accumulation causes, severely impact its service life, causing distance travelled and the time that can not reach regulation its service life, this will certainly affect the further genralrlization application of diesel engine particle catcher.The characteristic that this utility model is incremented by vertically for ashes deposition in filtering bodies air inlet port, a kind of air inlet port aperture of design axial step increases, the filter structure that filter wall face thickness axial step reduces, increase inlet port aperture simultaneously, reduce aperture, duct of giving vent to anger, thus in the case of filtering bodies swept volume and system pressure drop loss are constant, increase diesel engine particle catcher ashes bearing capacity, solve the endurance issues during particle trapper uses.
Utility model content
The purpose of this utility model is to solve the endurance issues such as blocking, breakage and the scorification that above-mentioned diesel engine particle catcher porous media filtering bodies in use exists, according to ashes deposition position and deposition quality in porous media filtering bodies duct, design the diesel engine particle catcher of a kind of variable orifice footpath filtering bodies, increase particle trapper ashes bearing capacity, extend its service life to extend, reach regulation distance travelled target, optimize duct flow field distribution simultaneously, improve the trapping in filtering bodies duct and reproducing characteristic.
For reaching above-mentioned purpose, the technical solution adopted in the utility model is to provide the diesel engine particle catcher of a kind of variable orifice footpath filtering bodies, it is characterized in that, filtering bodies filter element duct includes filtering wall, air inlet port, give vent to anger duct, and air inlet blocking sheet and venthole block sheet, the thickness axial step of described filtration wall reduces, the aperture axial step of air inlet port increases, the give vent to anger aperture in duct axially retains constant, and air inlet blocking sheet is arranged on one end of air inlet port, and venthole blocking sheet is arranged on the one end in duct of giving vent to anger.
Further, described air inlet port aperture is reduced with filter wall face thickness and is increased, and the size of air inlet port and filtration wall stepped change in the axial direction can be divided into one section or multistage.
Further, air inlet port aperture is more than giving vent to anger duct
This utility model is accessible to be provided the benefit that:
(1) increase filtering bodies air inlet port aperture, can increase the bearing capacity of filtering bodies ashes and microgranule, extend the time of ashes blocking filtering bodies, increase particle trapper service life；
(2) in filtration physical ability in variable orifice footpath makes air inlet port, the distribution of accumulation ashes is more reasonable, it is to avoid ashes first block air inlet port end, cause filtering bodies swept volume to reduce；
(3) heat being designed with in the beneficially microgranule regenerative process diffusion of ladder air inlet port, it is to avoid regenerative process is out of control and the hot injury of filtering bodies；
(4) in the change in air inlet port aperture can make duct, gas flow shape changes in local, the beneficially trapping of microgranule in filtering bodies；
(5) loss of gas extraction system overall pressure drop keeps constant or slightly reduces, and will not deteriorate dynamic property and the economy of electromotor；
(5) suitability is wide, the regenerative system not requirement to particle trapper, it is adaptable to the particle trapper of various regenerative systems；
(6) diesel engine particle catcher of the variable orifice footpath filtering bodies of this utility model design, in not only making the air inlet port of filtering bodies, ashes distribution is more reasonable, add ashes load capacity, extend the time of ashes blocking filtering bodies, improve particle trapper service life, and the trapping of beneficially microgranule, eliminate regeneration localized hyperthermia in filtering bodies, it is to avoid filtering bodies hot injury；Meanwhile, this utility model design is simple and practical, it is adaptable to the transformation of existing particle trapper system, in the case of not increasing particle trapper filtering bodies swept volume and changing external dimensions, can improve particle trapper and use mileage and time.The design of this utility model structure is simple and practical, in the case of not changing filtering bodies swept volume and the pressure loss, can increase filtering bodies ashes bearing capacity, makes ashes deposition position more reasonable, thus extends particle trapper system service life.
Accompanying drawing explanation
Fig. 1 is vertical section, filtering bodies 1/2 duct, variable orifice footpath schematic diagram；
Fig. 2 is A-A sectional view in Fig. 1；
Fig. 3 is B-B sectional view in Fig. 1.
Wherein: 1-filters wall, 2-air inlet port, 3-gives vent to anger duct, 4-air inlet blocking sheet, 5-venthole blocking sheet, 6-engine exhaust, 7-ash particles, 8-air inlet axis of symmetry, 9-venthole axis of symmetry.
Detailed description of the invention
This utility model is described in further detail by 1-3 below in conjunction with the accompanying drawings.
As it is shown in figure 1, this utility model one design air inlet port aperture ladder increases, filter body walls face thickness is with varying aperture stairway degression, and the Novel filtration body filter element that aperture, duct of giving vent to anger is constant, air inlet port front end face aperture is more than giving vent to anger duct simultaneously.
As shown in Figure 1, a kind of diesel engine particle catcher of variable orifice footpath filtering bodies, filtering bodies filter element duct includes filtering wall 1, air inlet port 2, give vent to anger duct 3, and air inlet blocking sheet 4 and venthole blocking sheet 5, the thickness axial step of described filtration wall 1 reduces, the aperture axial step of air inlet port 2 increases, and the aperture in duct 3 of giving vent to anger axially retains constant.Engine exhaust 6 flows into from the air inlet port 2 of filtering bodies, and after filtering wall 1 and filtering, flows into duct 3 of giving vent to anger, eventually enter into air.
Ash particles 7 in engine exhaust 6 is deposited on filtration wall 1, and is incremented by vertically.Therefore, air inlet port, 2 apertures increase with filtering the minimizing of wall 1 thickness, and the size of air inlet port 2 and filtration wall 1 stepped change in the axial direction can be divided into one section or multistage.
The volume of the air inlet port 2 that aperture is incremented by axially is continuously increased, be conducive to air inlet port latter end and the utilization in space, stage casing, increase filtering bodies latter end and the ashes bearing capacity in stage casing, it is thus possible to extend particle trapper end and stage casing duration of congestion, increase particle trapper service life.
In the reducing stage of air inlet port 2, aerofluxus is when by expansion duct, and its nowed forming can change, and forms local turbulence, and the change of gas flow shape can cause particle movement track to change, therefore the beneficially trapping of microgranule in filtering bodies.
Such as Fig. 1, filter wall 1 thickness to reduce along with the increase in air inlet port 2 aperture, during soot particle regeneration, local (air inlet port latter end) burning that particulate layer is thicker is the most violent, temperature can be higher, the minimizing of latter end wall thickness, is conducive to the diffusion of amount of localized heat during regeneration, avoid filtering bodies damaged and scorification under regeneration high-temp in regenerative process, increase particle trapper durability.Meanwhile, filter the minimizing of wall 2 thickness, the droop loss of filtering bodies can be reduced so that particle trapper entirety droop loss is basically unchanged, it is ensured that droop loss is in the range of the reasonable request of electromotor.
Fig. 2 is the close-up schematic view of particle trapper front elevational sectional A, it can be seen that aperture, front end face air inlet 2 duct is more than giving vent to anger duct 3, concrete size Selection is with engine exhaust volume and filtering bodies swept volume as foundation.By increasing air inlet port 2 aperture, the effective swept volume making air inlet port 2 increases, and the bearing capacity of ash particles is consequently increased by it, takes full advantage of filtering bodies inlet channels space, can extend the overall duration of congestion of particle trapper, increase particle trapper service life.
Fig. 3 show the close-up schematic view of end section B after particle trapper, and comparison diagram 2 is significantly greater than rear end face it can be seen that filter wall at the thickness of front end face.
In this embodiment, the axially increased gradient of air inlet port shown in Fig. 1 can be divided into one section or multistage, its concrete scheme can determine according to the feature of ashes deposition, and duct increases the size of flesh and also can adjust according to filtering bodies size and engine model in example, selects the most reasonably scheme to implement.
Operation principle of the present utility model is described as follows: use the diesel engine particle catcher of variable orifice footpath filtering bodies to be placed in inside particle trapper system casing, exhaust micro particle enters filtering bodies, it is deposited on filtering bodies wall, ash material after regeneration travels forward along duct with airflow direction, and progressively it being deposited on air inlet port wall, wall deposition ashes are axially increased along duct.Depositing the starting stage at ashes, first ashes are deposited on air inlet port back segment wall, and along with the increase of the time of operation, the ashes of air inlet port wall accumulation are the most slowly incremented by.Physical ability is filtered in variable orifice footpath increases air inlet port back segment volume, increases ashes bearing capacity, it is thus possible to prevent the air inlet port of ashes blocking filtering bodies back segment.
It addition, tail gas can be changed by air velocity behind expansion duct, and form local turbulence, exacerbate the microgranule motion in duct, the beneficially filtering bodies trapping to exhaust gas particulate.
Aperture, duct minimizing of giving vent to anger will cause the filtering bodies pressure loss to increase, and the design that ladder section filters wall decreases wall average thickness, will effectively reduce the particle trapper pressure loss, so that the loss of gas extraction system total pressure is constant or slightly reduces.
Description of the present utility model will combine exemplary specific embodiments, it is understood that this utility model is not merely limited in those exemplary specific embodiments by current description.On the contrary, this utility model is intended to cover exemplary specific embodiments, includes the various equivalents in the range of this utility model defined in the appended claims and alternative form simultaneously.
Claims (3)
1. the diesel engine particle catcher of a variable orifice footpath filtering bodies, it is characterized in that, the filtering bodies filter element duct of diesel engine particle catcher includes filtering wall (1), air inlet port (2), give vent to anger duct (3), air inlet blocking sheet (4) and venthole blocking sheet (5), the thickness axial step of described filtration wall (1) reduces, the aperture axial step of air inlet port (2) increases, the give vent to anger aperture in duct (3) axially retains constant, air inlet blocking sheet (4) is arranged on one end of air inlet port (2), venthole blocking sheet (5) is arranged on one end of duct of giving vent to anger (3).
A kind of diesel engine particle catcher of variable orifice footpath filtering bodies, it is characterized in that, described air inlet port (2) aperture increases with filtering the minimizing of wall (1) thickness, and the size of air inlet port (2) and filtration wall (1) stepped change in the axial direction can be divided into one section or multistage.
The diesel engine particle catcher of a kind of variable orifice footpath filtering bodies, it is characterised in that air inlet port (2) aperture is more than giving vent to anger duct (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620257115.3U CN205445740U (en) | 2016-03-30 | 2016-03-30 | It filters diesel particulate trap of body to become aperture |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620257115.3U CN205445740U (en) | 2016-03-30 | 2016-03-30 | It filters diesel particulate trap of body to become aperture |
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| CN205445740U true CN205445740U (en) | 2016-08-10 |
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| CN201620257115.3U Active CN205445740U (en) | 2016-03-30 | 2016-03-30 | It filters diesel particulate trap of body to become aperture |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108795723A (en) * | 2017-04-26 | 2018-11-13 | 株式会社村田制作所 | Filter for filtering karyocyte and its filter method is used |
| CN109415674A (en) * | 2017-03-10 | 2019-03-01 | 株式会社村田制作所 | Cell filtration stripper |
| CN110608078A (en) * | 2018-06-14 | 2019-12-24 | 保时捷股份公司 | Method for producing at least one ash formation of a particle filter of an exhaust system of an otto engine |
-
2016
- 2016-03-30 CN CN201620257115.3U patent/CN205445740U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109415674A (en) * | 2017-03-10 | 2019-03-01 | 株式会社村田制作所 | Cell filtration stripper |
| CN109415674B (en) * | 2017-03-10 | 2021-10-26 | 株式会社村田制作所 | Cell filtering filter |
| CN108795723A (en) * | 2017-04-26 | 2018-11-13 | 株式会社村田制作所 | Filter for filtering karyocyte and its filter method is used |
| CN108795723B (en) * | 2017-04-26 | 2022-06-10 | 株式会社村田制作所 | Filter for filtering nucleated cells and filtering method using the same |
| CN110608078A (en) * | 2018-06-14 | 2019-12-24 | 保时捷股份公司 | Method for producing at least one ash formation of a particle filter of an exhaust system of an otto engine |
| CN110608078B (en) * | 2018-06-14 | 2021-06-04 | 保时捷股份公司 | Method for producing at least one ash formation of a particle filter of an exhaust system of an otto engine |
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Address after: 430056 No. 55 Chaoyang Avenue, Wuhan Economic and Technological Development Zone, Wuhan City, Hubei Province Patentee after: China Auto Research Automobile Inspection Center (Wuhan) Co., Ltd. Address before: 430056 No. 55 Chaoyang Avenue, Wuhan Economic and Technological Development Zone, Wuhan City, Hubei Province Patentee before: Wuhan China prestige special purpose vehicle detects Ltd |