CN102072050A - Filtering system for EGR gases - Google Patents
Filtering system for EGR gases Download PDFInfo
- Publication number
- CN102072050A CN102072050A CN2010105071132A CN201010507113A CN102072050A CN 102072050 A CN102072050 A CN 102072050A CN 2010105071132 A CN2010105071132 A CN 2010105071132A CN 201010507113 A CN201010507113 A CN 201010507113A CN 102072050 A CN102072050 A CN 102072050A
- Authority
- CN
- China
- Prior art keywords
- filter
- foam metal
- exhaust gas
- metal filter
- filter system
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/35—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with means for cleaning or treating the recirculated gases, e.g. catalysts, condensate traps, particle filters or heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/022—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/08—Other arrangements or adaptations of exhaust conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy
- F01N5/02—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Exhaust-Gas Circulating Devices (AREA)
- Filtering Materials (AREA)
Abstract
The invention provides an EGR gas filtering system for filtering exhaust gas recirculation (EGR) gases, the filtering system comprises: an EGR pipeline mixing the exhaust gases with external air after receiving of exhaust gases by an engine, and then supplying the mixed gases to the engine; a filter housing disposed on the EGR pipeline; and a foam metal filter disposed in the filter housing.
Description
Technical field:
The present invention relates to a kind of exhaust gas recirculatioon (EGR, exhaust-gas recirculation) gas filter system, particularly a kind of EGR gas filter system that possesses the foam metal filter.
Background technique:
Environmental problem is on the rise recently, therefore more and more strengthens the restriction to vehicle exhaust.
HC in the vehicle exhaust (Hydro Carbon), CO, particulate (PM, Particulate Matter), the content of NOx (nitrogen oxide) etc. is higher, and diesel vehicle is for decomposing H C and CO employing diesel oil catalyst converter (DOC, Diesel Oxidation Catalyst), for decomposing N Ox adopts selective catalytic reduction (SCR, Selective Catalytic Reduction), and adopt diesel particulate filter technology such as (DPF, Diesel Particulate Filter trap) in order to decompose particulate material.
In internal-combustion engine, the growing amount of the high more NOx of the firing temperature of fuel is also just many more, and also increases by the use of exhaust being introduced again exhaust gas recirculatioon (EGR, the exhaust gas recirculation) system that reduces delivery temperature in the motor thereupon.
Yet when adopting egr system,,, can increase particulate (PM) on the contrary owing to low-temperature burning though can reduce the growing amount of NOx if increase the air displacement of recirculation.
And in EGR repeatedly, the particulate in the exhaust can stick on the heat exchanger surface of cooler for recycled exhaust gas, therefore can reduce the working efficiency of devices such as cooler or heat exchanger, causes the increase (dirt of NOx in the exhaust; Fouling).
Summary of the invention:
The present invention proposes in order to solve the as above problem that exists in the prior art.The purpose of this invention is to provide a kind of EGR gas filter system that can filter the particulate in the EGR gas effectively, this system possesses the foam metal filter.
In order to achieve the above object, EGR gas filter system of the present invention comprises: the EGR pipeline, the exhaust that will receive from motor with supply to motor again after outside air mixes; The filter casing is arranged on the described EGR pipeline; The foam metal filter is arranged in the described filter casing.
Can be provided with the cooler for recycled exhaust gas that is used to cool off EGR gas on the rear end of described filter casing.
Described foam metal filter can be the club shaped structure that tilts and be provided with in the blast air direction.
Described foam metal filter can be a plurality of, and on described blast air direction mutual intercross arrangement.
Described foam metal filter can be that an end is by the tubular structure of shutoff.
The inside of described foam metal filter can possess the perforated tube that is used to support described foam metal filter, and described foam metal filter coats described perforated tube with multi-layer structure.
Described foam metal filter can be the hollow cone body structure.
Described foam metal filter can be pressed in the described filter casing, and is filled in an end of described filter casing.
Described foam metal filter can be made of a plurality of slab foam metal stack.
Described foam metal filter can be the laciniation that forms on the blast air direction.
Can be coated with the catalyzer that is used to remove particulate on the described foam metal filter.
The pore opening of described foam metal filter can be 10 μ m-1000 μ m.
Described EGR pipeline can directly receive exhaust from motor.
EGR gas filter system of the present invention has improved the filter efficiency of EGR gas by adopting foam metal, and prevents that particulate from sticking on the device such as cooler, and keeps the reduction effect of harmful exhaust gas.
Description of drawings:
Fig. 1 is EGR gas filter system one an embodiment's of the present invention structural representation.
Fig. 2 is the sectional view that is used for representing first embodiment of the present invention foam metal filter shape.
Fig. 3 is the sectional view that is used for representing second embodiment of the present invention foam metal filter shape.
Fig. 4 is the sectional view that is used for representing third embodiment of the present invention foam metal filter shape.
Fig. 5 is the sectional view that is used for representing fourth embodiment of the present invention foam metal filter shape
Fig. 6 is the sectional view that is used for representing fifth embodiment of the present invention foam metal filter shape.
Fig. 7 is the sectional view that is used for representing sixth embodiment of the present invention foam metal filter shape.
Fig. 8 is the sectional view that is used for representing seventh embodiment of the present invention foam metal filter shape.
Fig. 9 is the sectional view that is used for representing eighth embodiment of the present invention foam metal filter shape.
Embodiment:
Below, be described with reference to the accompanying drawings the preferred embodiments of the present invention.
Fig. 1 is EGR gas filter system one an embodiment's of the present invention structural representation.
As shown in Figure 1, the EGR gas filter system 10 that one embodiment of the invention provided is as follows: enter in the filter casing 100 along EGR pipeline 60 from the part exhaust of gas exhaust manifold (manifold) 24 discharging of motor 20, and filtered by the filters in the described filter casing 100.
Exhaust through described filter casing 100 is cooled off in cooler for recycled exhaust gas 70, and according to electronic control unit (the electronic control unit that is subjected to not representing among the figure, call " ECU " in the following text) aperture of EGR valve 80 of control and the fresh air (fresh air) that enters from the outside conflux.Then, the EGR gas that confluxes with fresh air enters described motor 20 by induction mnifold 22.
At this, the EGR gas filter system in the present embodiment also can not possess described cooler for recycled exhaust gas 70.
And,, discharge after the after-treatment device by particulate filter (DPF) 92 or other types filters through after being arranged on the turbocharger 30 on the outlet pipe 90 from the part exhaust of described motor 20 dischargings.
And described fresh air enters sucking pipe 40 backs by described turbocharger 30 compressions, and by air-cooler 50 cooling backs and described EGR mixed gases.
At this, the EGR gas filter system 10 in the present embodiment can possess among the figure temperature transducer, pressure transducer of not expression etc., and whereby and by the described EGR valve 80 of ECU (not shown) control.And various sensors and ECU structure and working method are the those of ordinary skill content according to the present invention contents easy to implement of technical field of the present invention, therefore do not repeat them here.
Foam metal filter (210,220,230,240 among the embodiment who describes below, 250,260,270,280) compare with the filter of other types, it is in light weight, and its shape is more easily deformable, the damage that can avoid porcelain filter in the past to cause owing to concussion and thermal change extremely.In addition, this filter does not have (Blow-off) characteristic of losing heart that particulate that the three-dimensional air hole structure with complexity traps is discharged from the filter rear end simultaneously, so its harmful gas reduced rate is comparatively stable.
Therefore and the foam metal filter in the present embodiment is anti-comparatively speaking in High Temperature High Pressure, even if having exhaust to be directly delivered to filter, described filter is not yielding and be easy to remove particulate.Therefore, can directly after receiving exhaust, filter by motor it.
Below, describe the foam metal filter of present embodiment in detail with reference to Fig. 2 to Fig. 9.
Fig. 2 is the sectional view that is used for representing first embodiment of the invention foam metal filter shape.
As shown in Figure 2, the foam metal filter 210 in the first embodiment of the invention is arranged in the filter casing 100, and it has club shaped structure, and in the setting that tilts of blast air direction.
The simple shape of described foam metal filter 210 and described filter casing 100, so it makes easily structural stability.And because in settings that tilt of blast air direction, the section that the confession blast air is crossed diminishes gradually, so exhaust can pass through integral foam metallic filter 210 equably, and improves the filter efficiency of described foam metal filter 210 therefrom.
At this, no matter the blast air direction be among the figure left or to the right, can expect has same filter efficiency.
Fig. 3 is the sectional view that is used for representing second embodiment of the present invention foam metal filter shape.
As shown in Figure 3, foam metal filter 220 is arranged on the inside of described filter casing 100 in the second embodiment of the present invention, can be made of two club shaped structures, and described two club shaped structures tilt and are symmetrical arranged in the blast air direction.
With first embodiment in the same manner, therefore the foam metal filter 220 in the second embodiment of the invention and the simple shape of described filter casing 100 are made easily structural stability.And the section of crossing for blast air diminishes gradually, so exhaust can flow through integral foam metallic filter 220 equably, and improves the filter efficiency of described foam metal filter 220 therefrom.
At this, no matter the blast air direction be among the figure left or to the right, can expect has same filter efficiency.
Fig. 4 is the sectional view that is used for representing third embodiment of the present invention foam metal filter shape.
As shown in Figure 4, the foam metal filter 230 in the third embodiment of the invention is arranged on described filter casing 100 inside, can be made of a plurality of club shaped structures of the configuration that tilts in the blast air direction.
With first embodiment in the same manner, therefore the foam metal filter 230 in the third embodiment of the invention and the simple shape of described filter casing 100 are made easily structural stability.And the section of crossing for blast air diminishes gradually, so exhaust can pass through integral foam metallic filter 230 equably, and improves the filter efficiency of described foam metal filter 230 therefrom.
At this, no matter the blast air direction be among the figure left or to the right, also can expect to have same filter efficiency.
In described first, second, third embodiment, described foam metal filter 210,220,230 can be provided with the pore of different sizes on the blast air direction.Be that described foam metal filter 210,220,230 can be made of a plurality of foam metal laminations, and each foam metal is provided with pore not of uniform size, therefore can improves filter efficiency.
Fig. 5 is the sectional view that is used for representing fourth embodiment of the present invention foam metal filter shape.
As shown in Figure 5, the foam metal filter 240 in the fourth embodiment of the invention is end tubular structures by dividing plate 242 shutoff, is arranged in the round barrel shape filter casing 110.
The inside of described foam metal filter 240 is provided with the perforated tube 244 that is used for supporting described foam metal filter 240, and described foam metal filter 240 coats described perforated tube 244 with multi-layer structure.The pore of each layer can be different in the described foam metal filter 240, and can improve filter efficiency by dwindle pore opening on the blast air direction.
At this, no matter the blast air direction be among the figure left or to the right, also can expect to have same filter efficiency.
Fig. 6 is the sectional view that is used for representing fifth embodiment of the present invention foam metal filter shape.
As shown in Figure 6, foam metal filter 250 can be the conical structure that inside has hollow 252 in the fifth embodiment of the present invention, it is arranged in the cylinder-shaped filter casing 110, and its structural stability, can allow blast air cross integral foam metallic filter 250, therefore can improve filter efficiency.
At this, no matter the blast air direction be among the figure left or to the right, also can expect to have same filter efficiency.
Fig. 7 is the sectional view that is used for representing sixth embodiment of the present invention foam metal filter shape.
As shown in Figure 7, foam metal filter 260 is pressed in the filter casing 110 in the sixth embodiment of the present invention, and is filled in an end of described filter casing 110.
The foam metal filter 260 in the sixth embodiment of the invention and the simple shape of described filter casing 110 are made easily, and its structural stability.
At this, no matter the blast air direction be among the figure left or to the right, also can expect to have same filter efficiency.
Fig. 8 is the sectional view that is used for representing seventh embodiment of the present invention foam metal filter shape.
As shown in Figure 8, foam metal filter 270 can be piled up by tabular a plurality of foam metals and constitute mutually in the seventh embodiment of the present invention.Foam metal filter 260 is made of the foam metal of single structure in the sixth embodiment of the present invention, therefore can save manufacturing cost.And the foam metal filter 270 in the seventh embodiment of the invention is piled up by tabular a plurality of foam metals and constitutes, and can make the foam metal that is piled up with different shapes, to adapt to the circuit blast air.
Fig. 9 is the sectional view that is used for representing eighth embodiment of the present invention foam metal filter shape.
As shown in Figure 9, foam metal filter 280 can be the saw tooth structure that forms on the blast air direction in the eighth embodiment of the present invention, and it is folded in the filter casing.This shape according to described foam metal filter 280, even the making of foam metal filter and filter casing is meticulous inadequately, also can be convenient to install, and exhaust can flow through the whole surface of described foam metal filter 280, therefore can improve filter efficiency.
Foam metal filter in the various embodiments of the present invention can be coated with the catalyzer that is used to remove particulate on (210,220,230,240,250,260,270,280), therefore can improve filter efficiency, and can remove particulate.
And the pore opening among each embodiment can be 10 μ m-1000 μ m, and available different modes is arranged on the blast air direction, thereby improves filter efficiency.
Above-described is the preferred embodiments of the present invention, but the present invention is not restricted to the described embodiments, any change of being done under the situation that does not break away from spirit of the present invention or modify and all belong to protection scope of the present invention.
Claims (13)
1. exhaust gas recirculatioon gas filter system comprises:
Exhaust gas recirculation line receives exhaust from motor, and with its with supply to motor again after outside air mixes;
The filter casing is arranged on the described exhaust gas recirculation line; And
The foam metal filter is arranged in the described filter casing.
2. exhaust gas recirculatioon gas filter system according to claim 1 is characterized in that: described filter casing rear end is provided with the exhaust gas recirculation cooler that is used for cooled exhaust gas recirculation gas.
3. exhaust gas recirculatioon gas filter system according to claim 1 and 2 is characterized in that: described foam metal filter is a club shaped structure, in the setting that tilts of blast air direction.
4. exhaust gas recirculatioon gas filter system according to claim 3 is characterized in that: described foam metal filter is a plurality of, and on described blast air direction mutual intercross arrangement.
5. exhaust gas recirculatioon gas filter system according to claim 1 and 2 is characterized in that: described foam metal filter is that an end is by the tubular structure of shutoff.
6. exhaust gas recirculatioon gas filter system according to claim 5, it is characterized in that: the inside of described foam metal filter possesses the perforated tube that is used to support described foam metal filter, and described foam metal filter coats described perforated tube with multi-layer structure.
7. exhaust gas recirculatioon gas filter system according to claim 1 and 2 is characterized in that: described foam metal filter is the hollow cone body structure.
8. exhaust gas recirculatioon gas filter system according to claim 1 and 2 is characterized in that: described foam metal filter is pressed in the described filter casing, and is filled in an end of described filter casing.
9. exhaust gas recirculatioon gas filter system according to claim 1 and 2 is characterized in that: described foam metal filter is made of a plurality of slab foam metal stack.
10. exhaust gas recirculatioon gas filter system according to claim 1 and 2 is characterized in that: described foam metal filter is the laciniation that forms on the blast air direction.
11. exhaust gas recirculatioon gas filter system according to claim 1 and 2 is characterized in that: be coated with the catalyzer that is used to remove particulate on the described foam metal filter.
12. exhaust gas recirculatioon gas filter system according to claim 1 and 2 is characterized in that: the pore opening of described foam metal filter is 10 μ m-1000 μ m.
13. exhaust gas recirculatioon gas filter system according to claim 1 and 2 is characterized in that: described exhaust gas recirculation line directly receives exhaust from motor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020090112833A KR20110056137A (en) | 2009-11-20 | 2009-11-20 | EV gas filter system |
| KR10-2009-0112833 | 2009-11-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102072050A true CN102072050A (en) | 2011-05-25 |
Family
ID=44030761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105071132A Pending CN102072050A (en) | 2009-11-20 | 2010-09-24 | Filtering system for EGR gases |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR20110056137A (en) |
| CN (1) | CN102072050A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014707A (en) * | 2016-08-04 | 2016-10-12 | 广西玉柴机器股份有限公司 | EGR (Exhaust Gas Recirculation) system |
| CN107956606A (en) * | 2017-11-22 | 2018-04-24 | 无锡沃尔福汽车技术有限公司 | A kind of EGR air inlet pipe with filtration apparatus |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013208436A1 (en) * | 2013-05-08 | 2014-11-13 | MAHLE Behr GmbH & Co. KG | exhaust gas cooler |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05187329A (en) * | 1992-01-14 | 1993-07-27 | Mazda Motor Corp | Exhaust gas circulation device for engine with supercharger |
| CN1693682A (en) * | 2005-06-29 | 2005-11-09 | 清华大学 | Reverse Jet Regeneration Wall Flow Metal Mesh Diesel Vehicle Exhaust Particulate Filter |
| CN1865669A (en) * | 2005-05-20 | 2006-11-22 | 中国科学院金属研究所 | Carbon black filtering and electric direct-heating type regeneration device for diesel truck |
| KR20070000044A (en) * | 2005-06-27 | 2007-01-02 | 코리아 니켈 주식회사 | Filter for an apparatus for purifying exhaust gas from a diesel engine |
| KR20080017575A (en) * | 2006-08-21 | 2008-02-27 | 현대자동차주식회사 | Heterogeneous catalyst distribution multilayer filter |
| JP2009019556A (en) * | 2007-07-11 | 2009-01-29 | Hino Motors Ltd | Exhaust purification device |
| CN101439250A (en) * | 2008-11-28 | 2009-05-27 | 同济大学 | Air filter for fuel cell |
-
2009
- 2009-11-20 KR KR1020090112833A patent/KR20110056137A/en not_active Ceased
-
2010
- 2010-09-24 CN CN2010105071132A patent/CN102072050A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05187329A (en) * | 1992-01-14 | 1993-07-27 | Mazda Motor Corp | Exhaust gas circulation device for engine with supercharger |
| CN1865669A (en) * | 2005-05-20 | 2006-11-22 | 中国科学院金属研究所 | Carbon black filtering and electric direct-heating type regeneration device for diesel truck |
| KR20070000044A (en) * | 2005-06-27 | 2007-01-02 | 코리아 니켈 주식회사 | Filter for an apparatus for purifying exhaust gas from a diesel engine |
| CN1693682A (en) * | 2005-06-29 | 2005-11-09 | 清华大学 | Reverse Jet Regeneration Wall Flow Metal Mesh Diesel Vehicle Exhaust Particulate Filter |
| KR20080017575A (en) * | 2006-08-21 | 2008-02-27 | 현대자동차주식회사 | Heterogeneous catalyst distribution multilayer filter |
| JP2009019556A (en) * | 2007-07-11 | 2009-01-29 | Hino Motors Ltd | Exhaust purification device |
| CN101439250A (en) * | 2008-11-28 | 2009-05-27 | 同济大学 | Air filter for fuel cell |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014707A (en) * | 2016-08-04 | 2016-10-12 | 广西玉柴机器股份有限公司 | EGR (Exhaust Gas Recirculation) system |
| CN107956606A (en) * | 2017-11-22 | 2018-04-24 | 无锡沃尔福汽车技术有限公司 | A kind of EGR air inlet pipe with filtration apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20110056137A (en) | 2011-05-26 |
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Application publication date: 20110525 |