CN100389249C - Support seal pad - Google Patents
Support seal pad Download PDFInfo
- Publication number
- CN100389249C CN100389249C CNB2005100860742A CN200510086074A CN100389249C CN 100389249 C CN100389249 C CN 100389249C CN B2005100860742 A CNB2005100860742 A CN B2005100860742A CN 200510086074 A CN200510086074 A CN 200510086074A CN 100389249 C CN100389249 C CN 100389249C
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- China
- Prior art keywords
- seal pad
- catalyst carrier
- support seal
- support
- metallic case
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- Expired - Lifetime
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- 239000003054 catalyst Substances 0.000 claims abstract description 96
- 239000012784 inorganic fiber Substances 0.000 claims abstract description 25
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 24
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 abstract description 17
- 238000007789 sealing Methods 0.000 abstract description 10
- 238000004080 punching Methods 0.000 abstract description 4
- 230000003197 catalytic effect Effects 0.000 abstract 2
- 239000003566 sealing material Substances 0.000 description 23
- 238000000034 method Methods 0.000 description 22
- 239000002912 waste gas Substances 0.000 description 17
- 238000009434 installation Methods 0.000 description 11
- 239000000835 fiber Substances 0.000 description 9
- 238000001914 filtration Methods 0.000 description 9
- 239000003795 chemical substances by application Substances 0.000 description 8
- 239000007789 gas Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 239000000470 constituent Substances 0.000 description 6
- 238000012856 packing Methods 0.000 description 6
- 238000003825 pressing Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 229910052573 porcelain Inorganic materials 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 238000005470 impregnation Methods 0.000 description 3
- 238000001802 infusion Methods 0.000 description 3
- 229920000126 latex Polymers 0.000 description 3
- 239000004816 latex Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229940074869 marquis Drugs 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- VBUNOIXRZNJNAD-UHFFFAOYSA-N ponazuril Chemical compound CC1=CC(N2C(N(C)C(=O)NC2=O)=O)=CC=C1OC1=CC=C(S(=O)(=O)C(F)(F)F)C=C1 VBUNOIXRZNJNAD-UHFFFAOYSA-N 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
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- Exhaust Gas After Treatment (AREA)
- Catalysts (AREA)
- Processes For Solid Components From Exhaust (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The present invention intends to provide a catalytic converter containing a holding and sealing mat material which facilitates work for mounting a catalyst carrier into a metallic shell and has an excellent cushioning performance and further, a diesel particulate filter system containing a holding and sealing mat material which facilitates work for mounting a diesel particulate filter into the metallic shell and has an excellent cushioning performance. Accordingly, the present invention provides a catalytic converter comprises a catalyst carrier, a metallic shell covering the outer face of the catalyst carrier and a holding and sealing mat material disposed between the catalyst carrier and the metallic shell, wherein the holding and sealing mat material comprises inorganic fiber mat subjected to needle punching in the density of 50-3,000 per 100 cm2 thereof, and organic component which is largely over 0 and not more than 2 weight %, and wherein the holding and sealing mat material generates a surface pressure of 5-500 kPa when heated to 300-1,000 DEG C. under the filling bulk density of 0.15-0.45 g/cm3. This holding and sealing mat material can also be used for a holding and sealing mat material for holding the diesel particulate filter.
Description
The present invention is dividing an application of application number 01806905.3, the March 21 calendar year 2001 applying date, denomination of invention " catalyst converter and diesel particulate filter system ".
Technical field
The present invention relates to a kind of waste gas cleaning plant, particularly relate to the support seal pad that the support seal pad that is used for the support catalyst carrier in the catalyst converter and diesel particulate filter system are used to support diesel particulate filter.
Background technique
In the vent systems of motor car engine,, waste gas cleaning plant is housed for the purifying exhaust air composition.As waste gas cleaning plant, catalyst converter, diesel particulate filter (below, also can claim the DP filter) system etc. is arranged.
Catalyst converter purifies from the exhaust gas constituents (hydro carbons, carbon monoxide, nitrogen oxide etc.) of petrol engine or diesel engine discharge.Catalyst converter is made up of with the metallic case that holds this carrier the porcelain catalyst carrier of the catalyzer of load purifying exhaust air composition.Be folded with the support seal pad that is used for the support catalyst carrier between catalyst carrier and the metallic case.Catalyst carrier is contained in the metallic case with the state of the support seal pad of reeling.Because metallic case is different with the thermal expansion coefficient of porcelain catalyst carrier, so produce coefficient of thermal expansion differences during high temperature.Therefore, wish that exploitation has the support seal pad of the resiliency that can absorb thermal expansion difference.
In addition, thus the DP filtration system is the device of catching the diesel particulate purifying exhaust air of discharging from diesel engine.The DP filtration system is made up of porcelain DP filter of catching diesel particulate and the metallic case that holds this filter.Between DP filter and metallic case,, be provided with support seal pad in order to support the DP filter.The DP filter is contained in the metallic case with the state of the support seal pad of reeling.Because metallic case is different with the thermal expansion coefficient of porcelain DP filter, so produce coefficient of thermal expansion differences during high temperature.Therefore, the same with above-mentioned catalyst converter, wish that exploitation has the support seal pad of the resiliency that can absorb thermal expansion difference.
Here, the support seal pad of the support seal pad of said catalyst carrier and above-mentioned DP filter all has resiliency and big volume.Therefore, in the time of in the metallic case of packing into, the fitting operation of seal Backing material is bad.
In view of these existing problems, the invention provides a kind of catalyst converter, it comprises the support seal pad that the support catalyst carrier is used, when in metallic case, packing catalyst carrier into, this support seal pad makes processing ease and shock-absorbing capacity good, a kind of diesel particulate filter system that comprises support seal pad also is provided, and when packing the DP filter in metallic case, this support seal pad makes processing ease and shock-absorbing capacity good.
Summary of the invention
According to a first aspect of the present invention, a kind of catalyst converter is provided, it is made of the support seal pad that disposes between catalyst carrier, the metallic case that is overlayed on the outside of said catalyst carrier, said catalyst carrier and the above-mentioned metallic case.
It is characterized in that above-mentioned support seal pad is by with 50～3000/100cm
2Density is carried out the inorganic fiber mat formation that the pin perforation is handled.
And the content of organic principle is greater than 0 and is less than or equal to 2 weight %, is 0.15～0.45g/cm in filling density
3, when 300～1000 ℃ of heating, produce the surface pressure of 5～500kPa.
According to a first aspect of the present invention, the content of supporting the organic principle in the sealing material is greater than 0 and be less than or equal to 2 weight %.The effect of the tackiness agent of organic principle performance support seal pad, fiber disperses in the inhibition support seal pad.Also can suppress to support the large volume of sealing material in addition to a certain extent.Therefore, improve the installation of the support seal pad when in metallic case, catalyst carrier being installed.
On the other hand, when surpassing 2 weight %,, after support seal pad is contained in the metallic case, need to burn down the roasting technique of organic principle in order to reduce the amount of exhaust gas constituents.As a result, manufacturing process becomes complicated.
In addition, the content of the organic principle in the support seal pad is 0, and when just not containing organic principle, fiber will disperse from support sealing material.Operation when therefore, hindering catalyst carrier in metallic case, to install.
Handle because carried out the pin perforation in inorganic fiber mat, it is many that the entanglement between the fiber becomes, and rigidity power is big.Therefore, the holding power of support seal pad is big.In addition, suppress the volume of support seal pad, improve the installation of catalyst carrier in metallic case.
As mentioned above, according to a first aspect of the present invention, the catalyst converter of the support seal pad that the good support catalyst carrier of operation, resiliency that can provide a kind of use to help installation catalyst carrier in metallic case is used.
According to a second aspect of the present invention, a kind of diesel particulate filter system is provided, and it is to be made of the support sealing material that disposes between diesel particulate filter, the metallic case of outside that is coated on this diesel particulate filter and above-mentioned diesel particulate filter and the above-mentioned metallic case.
It is characterized in that above-mentioned support seal pad is 50～3000/100cm by density
2Carried out the inorganic fiber mat formation that the pin perforation is handled.
And the content of organic principle is greater than 0 and is less than or equal to 2 weight %, is 0.15～0.55g/cm in filling density
3, the surface pressure of generation 5～1000kPa when 300～500 ℃ of heating.
According to a second aspect of the present invention, the content of the organic principle in the support seal pad is greater than 0 and be less than or equal to 2 weight %.Organic principle works to support the tackiness agent of sealing material, suppresses the volume of support seal pad to a certain extent.The installation of the support seal pad in the time of therefore, can improving the DP filter and in metallic case, install.
In addition, the organic principle of above-mentioned certain content can prevent dispersing of fiber in the support seal pad.
On the other hand, when surpassing 2 weight %,, after support seal pad is contained in the metallic case, need to burn down the roasting technique of organic principle in order to reduce the amount of exhaust gas constituents.As a result, manufacturing process becomes complicated.
In addition, the content of the organic principle in the support seal pad is 0, and when just not containing organic composition, fiber will disperse from support sealing material, the operating environment deterioration when the DP filter is installed in metallic case.
Handle because carried out the pin perforation in the inorganic fiber mat material, it is many that the entanglement between the fiber becomes, rigidity power height.Therefore, the power of the support DP filter of support seal pad is big.In addition, suppress the volume of support seal pad, improve the installation of catalyst carrier in metallic case.
As mentioned above, according to a second aspect of the present invention, can provide a kind of diesel particulate filter system that comprises in metallic case the good support seal pad of processing ease when the DP filter is installed, resiliency.
The simple declaration of accompanying drawing
Fig. 1 is a sectional drawing of implementing the catalyst converter of side 1,
Fig. 2 is the explanatory drawing of mounting point of the catalyst converter of illustrated embodiment 1 and embodiment's 4 DP filtration system,
Fig. 3 is the explanatory drawing of embodiment 1 pin punching machine,
Fig. 4 is the explanatory drawing (a)～(c) of manufacture method of the catalyst converter of illustrated embodiment 1,
Fig. 5 is the sectional drawing of embodiment 4 catalyst converter.
The embodiment of invention
According to a first aspect of the present invention, the content of the organic principle in the above-mentioned support seal pad is preferably greater than 0 and be less than or equal to 1 weight %.When surpassing 1 weight %,, after the support sealing material is installed, may need to burn down the roasting technique of organic principle in metallic case in order to reach the waste gas emission standard of regulation.
As the organic principle that contains in the support seal pad, as long as the function of tackiness agent is arranged, have no particular limits, can exemplify latex etc.
When in inorganic fiber mat, adding organic principle, available infusion process, spray-on process, rolling method etc.
Above-mentioned support seal pad preferably is made of the inorfil that contains aluminium oxide or silica at least, can improve heat resistance like this.
Above-mentioned support seal pad preferably contains more than the aluminium oxide 70 weight %.Can improve heat resistance like this.In addition, the elastic force when improving high temperature can absorb the thermal expansion difference of metallic case and catalyst carrier, the power of raising support catalyst carrier.Therefore, can prevent rocking of catalyst carrier, suppress the increase of vibrating noise.In addition,, also can give full play to their performance, can fully adapt to the high temperature trend of internal-combustion engine in recent years even under 950～1000 ℃ high temperature.
Handling in the enterprising hand-manipulating of needle perforation of above-mentioned inorganic fiber mat, is every 100cm thereby form density
2In 50～3000 pin perforation vestige is arranged.During less than 50, the volume of support seal pad is big, can not pack into together in the metallic case with catalyst carrier, and when surpassing 3000, the performance of support catalyst carrier is low, and the disengaging of catalyst carrier may take place.
A first aspect of the present invention is to the preferred 0.15～0.45g/cm of the filling density of support seal pad in the metallic case
3Not enough 0.15g/cm
3The time, the power of support catalyst carrier may be lower, surpasses 0.45g/cm
3The time, may destroy catalyst carrier.
The above-mentioned support seal pad of filling in the above-mentioned metallic case is at filling density 0.15～0.45g/cm
3, when 300～1000 ℃ of heating, produce the surface pressure of 5kPa～500kPa.Like this, the power of support catalyst carrier increases, and catalyst carrier is rocked, and can stably support.During deficiency 5kPa, the power of support catalyst carrier may be too low, when surpassing 500kPa, and may breaking catalyst carrier.
The temperature of measuring surface pressure is 300～1000 ℃, and this is because the temperature that this temperature is a catalyst carrier is born when being installed on the automobile.
According to the first aspect of invention, the preferred pressing structure of above-mentioned metallic case.Said pressing structure is meant, when configuration catalyst carrier in metallic case, by exerting pressure, the catalyst carrier of lining support seal pad is pressed into the type that is pressed in the metallic case.The concrete shape of this metallic case for example is a tubular.Above-mentioned pressing structure can prevent to install rocking of rear catalyst carrier.
The preferred clam shell design of above-mentioned metallic case.This clam shell design for example is made up of 2 independent case members, wherein, the catalyst carrier of lining support seal pad is housed, and is bonded on the contact of case member with welding, tackiness agent etc. then.This structure can easily be installed catalyst carrier in metallic case.
Above-mentioned metallic case, preferred convoluted structure.Said convoluted structure is meant, prepares the catalyst carrier by the support seal pad lining, forms the metallic case structure it reeling sheetmetal on every side.According to this structure,, can easily in metallic case, install regardless of the shape of catalyst carrier.
Next, in a second aspect of the present invention, the content of organic principle is preferably greater than 0 and be less than or equal to 1 weight % in the above-mentioned support seal pad.When surpassing 1 weight %,, after the support sealing material is installed, may need to burn down the roasting technique of organic principle in metallic case in order to reach the emission standard of regulation.
As the organic principle that contains in the support seal pad, as long as the function of tackiness agent is arranged, have no particular limits, can exemplify latex, polyvinyl alcohol etc.
When in inorganic fiber mat, adding organic principle, available infusion process, spray-on process, rolling method etc.
Above-mentioned inorganic fiber mat material preferably is made of the inorfil that contains aluminium oxide or silica at least, can improve heat resistance.
Above-mentioned support sealing material preferably contains more than the aluminium oxide 70 weight %, can improve heat resistance like this.In addition, the elastic force when improving high temperature can absorb the thermal expansion difference of metallic case and DP filter, improves the ability of support DP filter.Therefore, can prevent rocking of DP filter, suppress the increase of vibrating noise.In addition, even under 500 ℃ high temperature, also can give full play to their performance.The high temperature trend that can fully adapt to internal-combustion engine in recent years.
Handling in the enterprising hand-manipulating of needle perforation of above-mentioned inorganic fiber mat, is every 100cm thereby form density
2In 50～3000 pin perforation vestige is arranged.During less than 50, support that the sealing material volume is big, can not pack into together in the metallic case that when surpassing 3000, the performance of support catalyst carrier is low, and the disengaging of catalyst carrier may take place with catalyst carrier.
Preferred 0.15～the 0.55g/cm of filling density of support seal pad in the metallic case
3Not enough 0.15g/cm
3The time, support that the power of DP filter may be too low, surpass 0.55g/cm
3The time, may destroy the DP filter.
The above-mentioned support seal pad of filling in the above-mentioned metallic case is at filling density 0.15～0.55g/cm
3, when 300～500 ℃ of heating, produce the surface pressure of 5kPa～1000kPa.Like this, support the power of DP filter to increase, do not make the jolting of DP filter, can stably support.During deficiency 5kPa, support that the power of DP filter may be too low, when surpassing 1000kPa, may destroy the DP filter.
The temperature of measuring surface pressure is 300～500 ℃, and this is because the temperature that this temperature is the DP filter is born when being installed on the automobile.
The preferred pressing structure of above-mentioned metallic case.Said pressing structure is meant, when configuration catalysis DP filter in metallic case, and the type that is pressed into that in metallic case, is pressed into by the DP filter of exerting pressure the support seal pad lining.The concrete shape of this metallic case for example is a tubular.Catalyzer folder supporting body can prevent to install the rear catalyst carrier by above-mentioned pressing structure jolting.
The preferred clam shell design of above-mentioned metallic case.This clam shell design for example is made up of 2 independent case members, wherein, the DP filter of lining support seal pad is housed, and is bonded on the contact of case member with welding, tackiness agent etc. then.According to this structure, can be easy in metallic case, install the DP filter.
Above-mentioned metallic case, preferred convoluted structure.Said convoluted structure is meant, prepares the DP filter that sealing material is supported in lining, forms the structure of metallic case it reeling sheetmetal on every side.According to this structure,, can easily in metallic case, install regardless of the shape of DP filter.
Below, provide embodiment, first, second aspect of inventing is elaborated.First, second aspect of the present invention is not limited to this embodiment.
To the catalyst converter of the form of implementation of a first aspect of the present invention, with Fig. 1～Fig. 4 explanation.
This routine catalyst converter 5, as shown in Figure 1, by the catalyst carrier 3 of the catalyzer of load purifying exhaust air composition, be coated on the metallic case 2 of catalyst carrier 3 sides, support seal pad 1 that the inorganic fiber mat of configuration between catalyst carrier 3 and metallic case 2 forms forms.The content of the organic principle in the support seal pad 1 is at 0～8 weight %.The inorganic fiber mat that constitutes support seal pad 1 is made up of the aluminium oxide of 70 weight % and the silica of 30 weight %, carries out the pin perforation and handles.The filling density of the support sealing material 1 in the metallic case 2 is 0.35g/cm
3
Catalyst carrier is to be made by a kind of steinheilite as pottery.As shown in Figure 1, catalyst carrier 3 is honeycomb molded bodies of forming at the aggregate of a plurality of perforates 30 of the upstream side of outlet pipe 91 and downstream side opening.A plurality of opening micropores are arranged, herein the catalyzer of load purifying exhaust air composition (for example, platinum, rhodium etc.) on the hole wall of perforate 30.Therefore, waste gas is during by perforate 30, and the exhaust gas constituents that contains in waste gas is cleaned by the catalyst action of hole wall internal burden.
Next, the manufacture method to this routine catalyst converter describes.
At first, will form coiled material by the inorfil that the silica of the aluminium oxide of 70 weight % and 30 weight % is formed.Carrying out the pin perforation with the pin punching machine on coiled material handles.The pin punching machine, as shown in Figure 3, have the perforation direction can reciprocating needle plate 51, support a pair of supporting plate 52 of the inner and outer surface of net 10.
Be fixed with a plurality of pins 53 that are used for perforation on coiled material 10 on the needle plate 51.Pin 53 fixing density are 100cm
2There are 500 on the needle plate.In addition, on the supporting plate 52, be provided with the through hole 520 that pin is used.If in the time of by the coiled material between a pair of supporting plate 52 10, make needle plate 51 to-and-fro motion, just just perforation on coiled material 10 of pin 53 forms entanglement between the fiber of coiled material 10.Like this, inorganic fiber mat forms 100cm
2The middle pinprick vestige that has 500.
Next step makes its impregnation organic principle by infusion process in inorganic fiber mat.The impregnation amount of organic principle is 1.5 weight % in the inorganic fiber mat.Use latex as organic principle.Like this, supported seal Backing material.
Next step shown in Fig. 4 (a), cuts off processing support seal pad 1, makes long body, simultaneously, and intermeshing recess 11 and protuberance 12 when forming the periphery that is wound on catalyst carrier 3 at its two ends.
Next step shown in Fig. 4 (b), is wound on support seal pad 1 on the catalyst carrier 3, recess 11 is meshing with each other with protuberance 12 is in the same place.
Next step supports the catalyst carrier 3 of sealing material 1 to be installed in the metallic case 2 cylindraceous with being wound with.
By more than, shown in Fig. 4 (c), obtain this routine catalyst converter 5.
When measure supporting the surface pressure of sealing material, be warmed up to 1000 ℃ with 30 minutes, in 1000 ℃ of maintenances 10 minutes.Keeping making the temperature of support seal pad in 10 minutes is 1000 ℃.Measure to measure the thermal expansion of anchor clamps etc. in advance, after the correction, measure the loading (compressive load) that keeps after 10 minutes.The sample size of support seal pad is 25mm * 25mm.
With the result that this method is measured, support that the surface pressure of sealing material is 110kPa.
Next step carries catalyst converter on automobile, the testing experiment of driving a vehicle, and the result, even vibration during driving, catalyst carrier is not rocked yet, and keeps stable.Rattle as the catalyst converter of waste gas cleaning plant does not almost have.
Hence one can see that, and support seal pad can be brought into play the power of support catalyst carrier at high temperature.
In this example, support to contain a spot of organic principle in the sealing material.The tackiness agent effect of sealing material is supported in the organic principle performance, can suppress to support the volume of sealing material to a certain extent.Therefore, the installation that is wound with the catalyst carrier of supporting sealing material being installed in metallic case improves.
In addition, as mentioned above, because support that the content of the organic principle in the sealing material is few, so the combustion gas that produce when heating can not make the exhaust gas constituents amount worsen.
In this routine catalyst converter relevant with the first aspect of invention, what catalyst carrier was used is the cellular steinheilite system integral body of external diameter as 130mm, long 100mm.This catalyst carrier is provided with a plurality of square holes along axle direction, the porous wall of catalyst component such as configuration load platinum between each hole.
In addition, metallic case is made by SUS304, has clam shell design.
When making this routine catalyst converter, the same with embodiment 1, at catalyst carrier surface coiling support seal pad, attach it to then in the case member divided into two parts, the case member sealing is fused into metallic case cylindraceous.
Other are identical with embodiment 1.Also can obtain the effect identical in this example with embodiment 1.
The metallic case of this routine catalyst converter relevant with the first aspect of invention is convoluted structure.
Behind the coiling support seal pad of the surface of catalyst carrier, a few the thickness of slab 1.5mm that reels on its surface, the metal sheet of wide 141mm, long 120mm.
Other are with embodiment 1.This example also can obtain the effect identical with embodiment 1.
Test example 1
In this example relevant with the first aspect of invention, content, the density of pinprick vestige and the filling density of inorganic fiber mat of organic principle in the support seal pad that the change catalyst carrier is used, surface pressure, stack mounting, the catalyst carrier of measuring support seal pad have crack-free and have or not disengaging, in addition, carry out the waste gas test.The result is as shown in table 1.
When measuring the surface pressure of support seal pad, use the determining method of the surface pressure among the embodiment 1.
Catalyst carrier had or not estimate, be expressed as when the crack is arranged *, when not producing, be expressed as zero.
Have or not disengaging to estimate to catalyst carrier, be expressed as when disengaging is arranged *, when not producing, be expressed as zero.
In the waste gas test, evaluation utilizes the waste gas control of the upstream side of catalyst converter and the lambda sensor that the downstream side disposes to have no abnormal.Organic principle in the inorganic fiber mat for a long time, waste gas control will produce unusual, the result produces harmful gas.Thus, produce the unusual time marquis of waste gas control, be expressed as *, do not produce and be expressed as zero when unusual.
The result of Ce Dinging as known from Table 1, in inorganic fiber mat, the content of organic principle is 0.1～2 weight %, and with 100cm
2In have 50～3000 density to carry out the pin perforation to handle, in addition, filling density is 0.15～0.45g/cm
3The time, it is good that modularity is installed, and, can not produce the waste gas that causes by support seal pad yet.
On the other hand, do not illustrate in the table, but when organic composition was 0, the fiber of support seal pad dispersed the deterioration of installation property.
With the mode of execution relevant DP filter of Fig. 5 explanation with the second aspect of invention.
The content of organic principle is 1 weight % in the support seal pad 7.The inorganic fiber mat that constitutes support seal pad is made up of 70 weight % aluminium oxide and 30 weight % silica, carries out the pin perforation and handles.The filling density of the support seal pad 7 in the metallic case 8 is 0.35g/cm
3
The DP filter is to be made by a kind of-steinheilite of pottery.As shown in Figure 5, DP filter 6 is by in the upstream of outlet pipe 91 or a side opening in downstream and the honeycomb molded body formed at the aggregate in a plurality of holes of opposite side sealing.DP filter 6 can make waste gas pass through via porous hole wall to downstream side perforate 62 from 61 of upstream side perforate.At this moment, the diesel particulate that contains in the exhaust gas constituents is hunted down on hole wall, and then waste gas is cleaned.
The diesel particulate of catching is burnt by not shown ignition mechanism.
Next, the manufacture method to this routine DP filtration system describes.
At first, make support seal pad with similarly to Example 1 method and condition.Just, the impregnation amount of organic principle is 1 weight % in the inorganic fiber mat.
Next,,, support seal pad 7 is cut off the shape that is processed into regulation, be wound on the DP filter 6, in the columnar metallic case 8 of packing into by method shown in Figure 4 with embodiment 1.According to above-mentioned, as shown in Figure 5, obtain this routine DP filtration system 5.
When measure supporting the surface pressure of sealing material, be warmed up to 500 ℃ with 30 minutes, keep 500 ℃ 10 minutes.Keeping making the temperature of support seal pad in 10 minutes is 500 ℃.Measure to measure the thermal expansion of anchor clamps etc. in advance, after the correction, measure the loading (compressive load) that keeps after 10 minutes.The sample size of support seal pad is 25mm * 25mm.
With the measurement result of this method, support that the surface pressure of sealing material is 180kPa.
The filling density of support seal pad is 0.35g/cm in the metallic case
3, thickness is 6mm.
In addition, according to method with embodiment 1, with the DP filtration system that above-mentioned DP filter and support seal pad the are installed testing experiment of driving a vehicle, the result, even vibration during driving, the DP filter does not rock yet, and keeps stable.Almost do not have from the rattle that sends as the DP filtration system of waste gas cleaning plant.
Hence one can see that, and support seal pad can be brought into play the holding power of at high temperature supporting the DP filter.
In this example, contain a spot of organic principle in the support seal pad.Organic principle is brought into play the effect of the tackiness agent of support seal pad, suppresses the large volume of support seal pad to a certain extent.Therefore, improve the installation that the DP filter of coiling support seal pad is installed in metallic case.
In addition, as described above,,, support that the power of DP filter is also good so can keep the resiliency of support seal pad because support that the content of the organic principle in the sealing gasket is few.
Test example 2
In this example relevant with the second aspect of invention, the content of organic principle in the support seal pad that change support DP filter is used, the density of pinprick vestige and the filling density of inorganic fiber mat, measuring surface pressure, installation complexity, the DP filter of supporting sealing material has crack-free, has or not disengaging.And carry out exhaust system test.Adopt the method for the foregoing description 4, measure the surface pressure of support seal pad.The mensuration of sundry item is with embodiment 1.The results are shown in Table 2.
The result of Ce Dinging as known from Table 2, in inorganic fiber mat, the content of organic principle is at 0.1～2 weight %, and, with 100cm
2In have 50～3000 density to carry out the pin perforation to handle, and filling density is 0.15～0.55g/cm
3, especially be 0.15～0.45g/cm
3The time, installation property is good, in addition, the waste gas that is caused by support seal pad can not take place yet.
On the other hand, do not illustrate in the table 2, but when organic composition was 0, the fiber of support seal pad dispersed the deterioration of installation property.
As mentioned above, according to the present invention, a kind of catalyst converter that comprises the support seal pad that processing ease when packing catalyst carrier in metallic case, support catalyst carrier that shock-absorbing capacity is good use is provided, a kind of diesel particulate filter system that comprises processing ease when packing the DP filter in metallic case, support seal pad that shock-absorbing capacity is good also is provided.
Claims (2)
1. support seal pad, this support seal pad be configured in catalyst carrier and the metallic case of this catalyst carrier outside that is covered between or between the metallic case of diesel particulate filter and this diesel particulate filter outside that is covered, it is characterized in that above-mentioned support seal pad is by with 50～3000/100cm
2Density carried out the inorganic fiber mat that the pin perforation handles and constituted, and organic bond content is greater than 0 and be less than or equal to 2 weight %,
With 0.45g/cm
3Filling density in 1000 ℃ of whens heating, above-mentioned support seal pad produces the surface pressure of 266～466kPa.
2. the support seal pad of claim 1 is characterized in that, above-mentioned inorganic fiber mat is made of the inorfil that contains aluminium oxide or silica at least.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000080376 | 2000-03-22 | ||
| JP2000079881A JP2001263041A (en) | 2000-03-22 | 2000-03-22 | Diesel particulate filter system |
| JP2000079881 | 2000-03-22 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB018069053A Division CN100386507C (en) | 2000-03-22 | 2001-03-21 | Catalyst converter and diesel particulate filter system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1749538A CN1749538A (en) | 2006-03-22 |
| CN100389249C true CN100389249C (en) | 2008-05-21 |
Family
ID=18597069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100860742A Expired - Lifetime CN100389249C (en) | 2000-03-22 | 2001-03-21 | Support seal pad |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2001263041A (en) |
| CN (1) | CN100389249C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007292040A (en) | 2006-03-31 | 2007-11-08 | Ibiden Co Ltd | Sheet member and exhaust gas processing device and manufacturing method of the same |
| JP2011214195A (en) * | 2010-03-31 | 2011-10-27 | Ibiden Co Ltd | Mat, method for manufacturing the mat, and apparatus for purifying exhaust gas |
| JP2012077399A (en) * | 2010-09-30 | 2012-04-19 | Ibiden Co Ltd | Mat, holding sealer, method of manufacturing mat and exhaust gas purification apparatus |
| JP5926084B2 (en) * | 2012-03-27 | 2016-05-25 | イビデン株式会社 | Holding sealing material, exhaust gas purification device, and manufacturing method of holding sealing material |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5290522A (en) * | 1993-01-07 | 1994-03-01 | Minnesota Mining And Manufacturing Company | Catalytic converter mounting mat |
| JPH07286514A (en) * | 1994-04-15 | 1995-10-31 | Mitsubishi Chem Corp | Gripping material for exhaust emission control device |
| US5882608A (en) * | 1996-06-18 | 1999-03-16 | Minnesota Mining And Manufacturing Company | Hybrid mounting system for pollution control devices |
| JPH11173140A (en) * | 1997-12-11 | 1999-06-29 | Ibiden Co Ltd | Manufacture of converter for exhaust emission control |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9723111D0 (en) * | 1997-11-03 | 1998-01-07 | Ici Plc | Composite mat |
| JP2000034918A (en) * | 1998-07-16 | 2000-02-02 | Honda Motor Co Ltd | Catalytic converter and manufacture thereof |
-
2000
- 2000-03-22 JP JP2000079881A patent/JP2001263041A/en active Pending
-
2001
- 2001-03-21 CN CNB2005100860742A patent/CN100389249C/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5290522A (en) * | 1993-01-07 | 1994-03-01 | Minnesota Mining And Manufacturing Company | Catalytic converter mounting mat |
| JPH07286514A (en) * | 1994-04-15 | 1995-10-31 | Mitsubishi Chem Corp | Gripping material for exhaust emission control device |
| US5882608A (en) * | 1996-06-18 | 1999-03-16 | Minnesota Mining And Manufacturing Company | Hybrid mounting system for pollution control devices |
| JPH11173140A (en) * | 1997-12-11 | 1999-06-29 | Ibiden Co Ltd | Manufacture of converter for exhaust emission control |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1749538A (en) | 2006-03-22 |
| JP2001263041A (en) | 2001-09-26 |
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