WO2006008855A1 - 触媒コンバータの製造方法および触媒コンバータ並びに触媒コンバータの管理方法 - Google Patents
触媒コンバータの製造方法および触媒コンバータ並びに触媒コンバータの管理方法 Download PDFInfo
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- WO2006008855A1 WO2006008855A1 PCT/JP2005/004753 JP2005004753W WO2006008855A1 WO 2006008855 A1 WO2006008855 A1 WO 2006008855A1 JP 2005004753 W JP2005004753 W JP 2005004753W WO 2006008855 A1 WO2006008855 A1 WO 2006008855A1
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- WIPO (PCT)
- Prior art keywords
- catalyst
- diameter
- outer cylinder
- press
- pressing force
- Prior art date
Links
- 230000003197 catalytic effect Effects 0.000 title claims abstract description 81
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims description 46
- 239000003054 catalyst Substances 0.000 claims abstract description 238
- 238000003825 pressing Methods 0.000 claims abstract description 197
- 230000009467 reduction Effects 0.000 claims description 126
- 238000001514 detection method Methods 0.000 claims description 54
- 238000004364 calculation method Methods 0.000 claims description 24
- 238000007726 management method Methods 0.000 claims description 20
- 230000008569 process Effects 0.000 claims description 18
- 238000012856 packing Methods 0.000 claims description 17
- -1 polypropylene Polymers 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 238000003780 insertion Methods 0.000 claims description 8
- 230000037431 insertion Effects 0.000 claims description 8
- 239000004743 Polypropylene Substances 0.000 claims description 7
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 7
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 7
- 229920001155 polypropylene Polymers 0.000 claims description 5
- 238000012545 processing Methods 0.000 description 23
- 210000004027 cell Anatomy 0.000 description 12
- 238000005259 measurement Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 5
- 239000011230 binding agent Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000011946 reduction process Methods 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 238000009987 spinning Methods 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 210000002421 cell wall Anatomy 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000012210 heat-resistant fiber Substances 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229910052902 vermiculite Inorganic materials 0.000 description 1
- 239000010455 vermiculite Substances 0.000 description 1
- 235000019354 vermiculite Nutrition 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for
- B23P11/005—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for by expanding or crimping
-
- 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
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J33/00—Protection of catalysts, e.g. by coating
-
- 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
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
- B23P2700/03—Catalysts or parts thereof
-
- 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
- F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
- F01N2450/02—Fitting monolithic blocks into the housing
-
- 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
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2839—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
- F01N3/2853—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration using mats or gaskets between catalyst body and housing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49345—Catalytic device making
Definitions
- Catalytic converter manufacturing method catalytic converter, and catalytic converter management method
- the present invention relates to a method for manufacturing a catalytic converter in which a catalyst is held in an outer cylinder via a buffer mat, a catalytic converter, and a method for managing the catalytic converter.
- a catalytic converter for purifying exhaust gas have been provided in exhaust systems of various engines including automobile engines.
- a catalytic converter basically has a structure composed of a columnar catalyst, a mat wound around the catalyst, and an outer cylinder that accommodates the catalyst wound around the mat.
- the catalyst is held in the outer cylinder by compressing the mat by reducing the diameter of the cylinder.
- the mat wound around the catalyst is made of heat-resistant fiber material and is interposed between the catalyst and the outer cylinder to ensure a sealing property that prevents unpurified exhaust gas from passing between the catalyst and the outer cylinder.
- it has various functions such as elastic retention of the catalyst and heat insulation between the catalyst and the outer cylinder.
- the mat plays a very important role in maintaining the performance of the catalytic converter for a long period of time.
- the wall constituting the catalyst is a thin wall. Therefore, in order to prevent problems such as damage from high heat and vibration during use. In addition, it is necessary to provide the mat with a uniform surface pressure.
- the catalyst has a variation in the outer diameter of each product, if the outer cylinder diameter is made uniform by reducing the diameter, the surface pressure of the mat is reduced. Cannot be made uniform. Therefore, conventionally, as a general manufacturing method for making the surface pressure of the mat uniform, the outer diameter of the catalyst is measured, and a desired target diameter reduction amount is determined based on the measured value. When the outer cylinder was reduced in diameter based on the amount of diameter reduction, the ⁇ ⁇ method was adopted. [0005] As another method, as disclosed in Japanese Patent Laid-Open No. 2003-343255 (paragraphs 0019-0023, FIGS. 2 and 3), for example, the surface pressure of a mat wound around a catalyst is adjusted.
- the distance between the shaft center of the catalyst and the sensor when this surface pressure becomes a predetermined value is detected by the sensor, and the distance between the catalyst core force and the outer cylinder is reduced during the subsequent diameter reduction processing. If the amount of diameter reduction is adjusted so that the measured distance is obtained, a wafer is proposed.
- a general manufacturing method for making the surface pressure of the mat uniform is to adjust the amount of reduction in diameter based on the measured value of the outer diameter of the catalyst. Variations in the mat wound around the catalyst, such as weight per area (BW) and density, were not considered. For this reason, there has been a problem that the surface pressure cannot be made uniform under the influence of variations in mats.
- BW weight per area
- the manufacturing method for detecting the surface pressure of the conventional mat and adjusting the diameter reduction processing amount in the manufacturing method for detecting the surface pressure of the conventional mat and adjusting the diameter reduction processing amount, the distance between the catalyst core and the sensor when the surface pressure of the mat becomes a predetermined value. Based on this, the diameter reduction check is performed, and therefore it is possible to perform the diameter reduction process reflecting the characteristics of the mat.
- the measurement work for measuring the distance has to be performed by separating a series of work forces in the manufacturing process, which is complicated and inferior in productivity.
- the distance to the catalyst force sensor when the surface pressure becomes a predetermined value is simulated as the same distance when the catalyst is mounted on the outer cylinder in a suitable state. For this reason, there is a problem that it is difficult to maintain a stable catalyst.
- the catalyst has a variation in the outer diameter as described above, and also has a twist and a bend.
- the mat has a variation in density distribution, it was difficult to measure the distance to the outer cylinder uniformly in the axial measurement of the catalyst in a partial measurement.
- an object of the present invention is to provide a catalytic converter manufacturing method that can make the surface pressure of the mat uniform, hold the catalyst in a stable state, and improve productivity. And providing a catalytic converter and a management method of the catalytic converter Objective.
- the method for producing a catalytic converter according to one aspect of the present invention is a method for producing a catalytic converter in which a catalyst having a mat wound on its outer peripheral surface is held inside a reduced diameter outer cylinder.
- a detecting step for detecting a pressing force when the pressing device presses the catalyst, and a gap value between the outer cylinder and the catalyst is determined based on the pressing force detected by the detecting step.
- detecting the pressing force includes detecting a force received by the outer cylinder in addition to detecting a reaction force of the pressing force. Specifically, when the reaction force of the pressing force is detected by a load cell or the like, or when the catalyst is pressed, the receiving side, for example, the outer cylinder or the side of the member that guides the press-fitting receives the pressing pressure, Including detecting the force when receiving or receiving.
- the catalytic converter manufacturing method described above is characterized in that the outer cylinder is reduced in diameter after the catalyst is press-fitted into the outer cylinder.
- the above-described method for manufacturing a catalytic converter is characterized in that after the diameter of the outer cylinder is reduced, the catalyst is press-fitted into the outer cylinder.
- the detection step detects the pressing force when the pressing device presses the catalyst
- the calculation step detects the gap between the outer cylinder and the catalyst based on the detected pressing force.
- the amount of diameter reduction for setting the gap value to a desired target value is calculated. Thereby, the diameter reduction amount is calculated based on the pressing force.
- the catalyst has variations in outer diameter
- the mat has variations in weight (BW) and density per area for each product.
- BW weight
- density per area for each product.
- the pressing force when pressing the catalyst also appears as a different value for each because of these variations.
- the pressing force by the pressing device appears as a value reflecting the variation of the catalyst and the mat, and this value force can also form a gap appropriately if the amount of diameter reduction is uniformly derived.
- the pressing force tends to increase.
- the outer diameter size of the catalyst and the weight (BW) and density per area of the mat are small. Sometimes the pressing force tends to decrease.
- the outer cylinder is reduced in diameter reduction step.
- the outer cylinder is reduced in diameter by a predetermined amount, the mat wound around the catalyst is compressed, and a gap between the catalyst and the outer cylinder is formed at a desired target value.
- a catalytic converter in which the surface pressure of the mat is uniform can be obtained.
- the “desired target value” is a mat packing density that generates a surface pressure necessary to hold the catalyst in a state where the catalyst performance can be maximized in a stable state over a long period of time. This is the size of the gap between the outer cylinder and the catalyst.
- the gap can be made appropriate despite the variation for each product.
- the catalyst is press-fitted through a funnel-shaped enlarged-diameter portion, and the detection of the pressing force by the detection step is performed on the enlarged-diameter portion. It is characterized by detecting the pressing force at the time of press-fitting.
- the catalyst since the catalyst is press-fitted through the funnel-shaped enlarged diameter portion, the catalyst can be smoothly pressed into the outer cylinder.
- the detection of the pressing force by the detection step is performed by detecting the pressing force when the catalyst is press-fitted into the funnel-shaped enlarged diameter portion.
- a funnel-shaped enlarged diameter portion can be formed integrally with the outer cylinder, and the catalyst can be press-fitted therethrough. In this case, a separate enlarged diameter portion is used. Thus, it is not necessary to attach this to the outer cylinder, and the work at the time of press-fitting can be simplified.
- the funnel-shaped enlarged diameter portion includes an inclined portion and a cylindrical portion having a linear inner surface provided continuously to the inclined portion, and the detection of the pressing force by the detecting step is performed by press-fitting the catalyst. It is desirable to perform the test at a position just before the rear end of the mat enters the cylindrical part from the inclined part.
- the pressing force is detected at a position where the pressing force reaches an appropriate peak value when being pressed by the funnel-shaped enlarged diameter portion. Therefore, by calculating the amount of diameter reduction based on the pressing force at this time, the diameter reduction processing can be performed so that the gap becomes a desired target value.
- the peak value of the pressing force appears when the catalyst passes through substantially the same position. Therefore, it is possible to detect an appropriate pressing force by specifying this position and detecting the pressing force. Therefore, this can reduce the cost.
- a cylindrical portion is formed at a length at which the entire catalyst is held at least, and the detection step is performed.
- the pressing force can be detected at the position immediately before the rear end portion of the mat inclines into the cylindrical portion in the direction in which the catalyst is pressed.
- the catalyst when the pressing force is detected, the catalyst is held in the cylindrical portion of the funnel-shaped enlarged diameter portion, and is prevented from entering the outer cylinder.
- the pressing force can be detected in the cylindrical portion of the expanded diameter portion, which makes it possible to relatively accurately detect variations in the catalyst and mat that are not easily affected by variations in the outer cylinder shape and surface roughness.
- the pressing force reflected in can be obtained. Accordingly, a highly accurate diameter reduction can be obtained.
- the detection of the pressing force in the detection step can be performed by detecting the pressing force of the catalyst after being press-fitted into the outer cylinder.
- the pressing force is detected in a state in which the characteristics of the actually stored outer cylinder are reflected. be able to. Thereby, the amount of diameter reduction close to a mounting state can be obtained. Further, since it is no longer necessary to detect the pressing force at the funnel-shaped enlarged diameter portion, the press-fitting can be performed smoothly, and the press-fitting operation time can be shortened.
- the reduced diameter portion is formed in the outer cylinder by carrying out the reduction diameter check with a reduction diameter amount smaller than the reduction diameter amount in the diameter reduction step, and between the reduced diameter portion and the non-reduced diameter portion, A pre-diameter step that forms an inclined step portion between them, and the detection of the pressing force by the detection step is performed at a position immediately before the rear end portion of the mat enters the reduced-diameter portion from the step portion in the catalyst press-in direction.
- the portion where the catalyst in the outer cylinder is fixed by the preliminary reduction step has a reduction amount smaller than the reduction amount in the reduction step before the catalyst is press-fitted. Since the diameter reduction processing is performed, the time required for the diameter reduction processing after the catalyst press-fitting is shortened. Further, since the catalyst is press-fitted into the outer cylinder which is in a state close to that after the diameter reduction processing, it is possible to detect the pressing force assuming a state where the catalyst is actually fixed. Since the detection of the pressing force in the detection step is performed at a position immediately before the rear end portion of the catalyst enters the reduced diameter portion from the step portion formed by the preliminary diameter reducing step, the pressing force has an appropriate peak. At the position where the value is obtained, the pressing force is detected. Gatsutsu As a result, it is possible to reduce the cost.
- the method for manufacturing the catalytic converter described above includes a press-fitting step in which the press-fitting operation is stopped after press-fitting the entire catalyst into the outer cylinder, and a press-fitting operation in which the press-fitting step is stopped. And a reinjection step of reinjecting the catalyst again, and the detection of the pressing force by the detection step is performed during the reinjection step.
- the method for manufacturing the catalytic converter described above is characterized in that the calculation of the diameter reduction amount in the calculation step is performed based on data set in advance for each type of the mat, the catalyst, and the outer cylinder. .
- the diameter reduction amount in the calculation step is calculated based on data set in advance for each type of mat, catalyst, and outer cylinder.
- the amount of diameter reduction reflecting the characteristics of each cylinder type can be calculated, and the gap with the catalyst can be made closer to the desired target value.
- the catalytic converter manufacturing method described above is characterized in that the calculation of the diameter reduction amount in the calculation step is performed based on a peak value at a predetermined insertion position of the pressing force detected in the detection step.
- the peak value refers to the maximum peak value or the peak value obtained under a predetermined setting condition.
- the method for manufacturing a catalytic converter described above is characterized in that a polypropylene or polyethylene terephthalate sheet is attached to the outer surface of the mat.
- a catalytic converter according to another aspect of the present invention is a catalytic converter that holds a catalyst having a mat wound around its outer peripheral surface inside a reduced diameter outer cylinder, and a pressing device presses the catalyst.
- a pressing force is detected, and a diameter reduction amount for setting the gap value between the outer cylinder and the catalyst to a desired target value is determined from the detected pressing force, and the determined reduction amount is Based on V, the outer cylinder is reduced in diameter.
- the gap between the outer cylinder and the catalyst can be set to an optimum gap (desired target value) that matches the size of the catalyst and the characteristics of the mat, and the surface pressure of the mat can be made uniform. As a result, it is possible to obtain a catalyst compact that has durability that can withstand long-term use and high product performance.
- a management method for a catalytic converter is a management method for performing pass / fail judgment of a catalytic converter that holds a catalyst with a mat wound around an outer peripheral surface inside a reduced diameter outer cylinder. And a detection step for detecting a pressing force when the pressing device press-fits the catalyst, and a gap value between the outer cylinder and the catalyst based on the pressing force detected by the detection step.
- the catalyst held in the outer cylinder reduced in diameter based on the reduction amount calculated based on the detection step and the calculation step, the mat packing density within a predetermined range. It is possible to check whether it is within the standard that is the limit value of the mat packing density in product management.
- the catalyst Since there is a correlation between the pressing force when the pressing device presses the catalyst and the mat filling density at that time, the catalyst is removed from the mat filling density calculated based on the pressing force by the pressing device.
- the amount of diameter reduction for maintaining the packing density can be calculated.
- the mat packing density after the diameter reduction can be determined, and management can be performed based on this calculated value.
- the determination step may be performed after the catalyst is press-fitted into the outer cylinder.
- the determination step can be performed in the process of press-fitting the catalyst into the outer cylinder after the outer cylinder is reduced in diameter.
- the management method of the catalytic converter described above is characterized in that a polypropylene or polyethylene terephthalate sheet is attached to the outer surface of the mat.
- the sheet covers the outer surface of the mat, it is possible to prevent the friction coefficient from being varied when the pressing force is detected due to adhesion of the nodding contained in the mat. Can do. Further, since the mat to which the sheet is attached is not easily affected by humidity, the pressing force can be detected in a more stable state. In addition, the determination of whether or not the catalyst is held at a predetermined mat packing density also has no variation in the friction coefficient.
- V can be performed in a more stable state.
- FIG. 1 is a cross-sectional view of a catalytic converter manufactured using a method for manufacturing a catalytic converter according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional view of the catalytic converter in the same manner before spinning gear.
- FIG. 3 is a perspective view for explaining a catalyst press-fitting process when manufacturing a catalytic converter.
- FIG. 4 (a) is a schematic end view showing a state when a catalyst is press-fitted by a diameter-expanding member, and (b) is a partially enlarged end view.
- FIG. 5 (a) to (d) are schematic cross-sectional views for explaining a press-fitting process.
- FIG. 6 A diagram for explaining the diameter reduction processing in the production of a catalytic converter.
- (A) is a schematic view of the catalytic converter during lateral reduction, and (b) is the same catalyst.
- FIG. 3 is a conceptual diagram showing a cross section of a compressor.
- FIG. 7 is a perspective view for explaining a catalyst press-fitting process when manufacturing a catalytic converter.
- FIG. 8 (a) to (d) are schematic cross-sectional views showing a press-fitting process.
- FIG. 9 (a) to (d) are schematic cross-sectional views showing other press-fitting processes.
- FIG. 10 (a) to (d) are schematic cross-sectional views showing other press-fitting processes.
- FIG. 11 is a schematic cross-sectional view for explaining detection of other pressing forces.
- FIG. 12 is a schematic cross-sectional view for explaining detection of other pressing forces.
- FIG. 13 is a schematic sectional view for explaining detection of other pressing forces.
- FIG. 14 is a schematic cross-sectional view showing a modified example in the detection of the pressing force shown in FIG.
- FIG. 15 is a graph showing the relationship between the target, outer diameter and pressing force.
- the catalytic converter 10 of the present embodiment includes a columnar catalyst carrier (hereinafter referred to as catalyst) 11 having a high cell density, and a mat wound around the periphery thereof. 12 and an outer cylinder 13 covering the catalyst 11 in a state in which the mat 12 is wound. Then, the catalyst 11 has an outer cylinder 13 having a predetermined gap S formed by the thickness of the mat 12. Will be held inside.
- catalyst columnar catalyst carrier
- the catalyst 11 is a substantially cylindrical cordierite monolith carrying an exhaust gas purifying catalyst such as platinum. As shown in FIG. -Cam-shaped passage 11a is formed. The exhaust gas is contained in the exhaust gas when passing through the hermetic passage 11a, and the exhaust gas component forms the hermetic passage 1la and is purified through the porous cell wall. I'm getting caught! /
- the mat 12 is formed into a sheet shape from silica'alumina ceramic fiber, unexpanded vermiculite, binder, inorganic fiber and a mixture thereof, or a combination thereof.
- 13 has a role of holding the gas in the inside of the cylinder 13 and also has a role of preventing the exhaust gas from leaking between the catalyst 11 and the outer cylinder 13.
- the mat 12 holds the catalyst 11 with a constant surface pressure by the diameter reduction processing described later. In the present embodiment, it can be expected that the holding force sufficient to hold the catalyst 11 in the outer cylinder 13 is exhibited by the diameter reduction processing described later.
- the mat 12 may be one that does not use a binder or one that is formed in a cylindrical shape.
- the outer cylinder 13 is formed in a substantially circular cylindrical shape with an iron-based material such as stainless steel, and has a barrel shape that can accommodate the catalyst 11 wound around the mat 12 therein. Yes.
- cone-shaped exhaust passages 13a and 13b are formed in openings on both sides of the outer cylinder 13 after the diameter reduction processing described later.
- the catalyst 11 wound around the mat 12 is inserted into the outer cylinder 13 by press-fitting.
- a diameter-expanding member 30 as a funnel-shaped diameter-expanding portion is used for press-fitting the catalyst 11.
- the diameter-expanding member 30 is a cylindrical guide jig used when the catalyst 11 having the mat 12 wound around the outer peripheral surface thereof is press-fitted into the outer cylinder 13, and at least the inner surface 31b is formed in a funnel shape. It has an inclined portion 31 and a cylindrical portion 32 having a linear inner surface 32a (see FIG. 4 (a)) provided continuously to a lower portion 31a of the inclined portion 31.
- the inclined portion 31 is formed with a certain angle ⁇ , and the inclined surface 31a is formed so as to be continuous with the inner surface 32a of the lower cylindrical portion 32 without a step.
- the inner diameter D1 of the upper end of the inclined portion 31 is larger than the outer diameter D of the catalyst 11 (including the mat 12 (see FIG. 3)). It is formed so that the catalyst 11 can be smoothly introduced when the catalyst 11 is press-fitted.
- a step 32b into which the upper portion 13c of the outer tube 13 is fitted is provided around the lower inner periphery of the cylindrical portion 32. ing.
- the inner diameter of the cylindrical portion 32 is formed slightly smaller than the inner diameter of the outer cylinder 13. As a result, as shown in FIGS.
- the inner surface 32a of the cylindrical portion 32 is directed inward in a state where the diameter-expanding member 30 is attached to the upper portion 13c of the outer cylinder 13. It will be in a slightly protruding state. It should be noted that the minimum fit that can be fitted between the inner diameter of the step 32b and the outer cylinder 13 is set to a tolerance so that there is almost no backlash.
- the inclined surface 31a and the inner surface 32a of the diameter-expanding member 30 are smooth so that the catalyst 11 can be press-fitted smoothly.
- the catalyst 11 wound around the mat 12 can be smoothly press-fitted into the outer cylinder 13 from the inclined portion 31 of the enlarged member 30 through the cylindrical portion 32. .
- the catalyst 11 wound around the mat 12 is inserted while the portion of the mat 12 is gradually compressed by the inclined portion 31 of the diameter expanding member 30 and further compressed by the cylindrical portion 32 to enter the outer cylinder 13. It will be inserted.
- a press-fitting device (not shown) is used for the press-fitting work.
- a catalyst 11 in which a diameter expanding member 30 is attached to the upper portion 13c of the outer cylinder 13 and the mat 12 is wound from the opening of the inclined portion 31 of the diameter expanding member 30 is For example, it is manually inserted into the diameter-expanding member 30.
- the pressing member A of the press-fitting device (not shown) is moved downward toward the catalyst 11 inserted into the diameter-expanding member 30 and is brought into close contact with the upper surface of the catalyst 11 at the bottom surface of the pressing member A.
- the pressing member A is further moved downward.
- the catalyst 11 is pressed and moved downward, and is press-fitted into the outer cylinder 13 as shown in FIG. 5 (c). Thereafter, as shown in FIG. 5 (d), the diameter-expanding member 30 is removed from the upper portion 13c of the outer cylinder 13, and the press-fitting operation is completed.
- the pressing force at the time of press-fitting by the pressing member A is detected during such press-fitting work.
- the detected pressing force data is handled as data for calculating the diameter reduction amount of the outer cylinder 13 during the diameter reduction processing described later.
- the pressing force of the pressing member A is detected above the pressing member A.
- a load cell B is provided, and the pressure of the pressing member A is detected by using the load cell B.
- the reaction force when the catalyst 11 wound around the mat 12 is pressed by the pressing member A is detected by the load cell B as the surface pressure against the catalyst 11. Will be.
- a detection signal representing the pressing force detected by the load cell B is input to a control device C such as a computer provided integrally or separately with the press-fitting device.
- the detection signal from the load cell B is stored in a built-in memory.
- it is stored in the maximum peak value memory of the detection signal.
- the surface pressure value stored in the memory is not limited to the maximum peak value, for example, the peak value in a specific stroke region by detecting the stroke amount of the pressing member A at the time of press-fitting described later ( A peak value at a predetermined insertion position) may be detected.
- the control device C calculates a diameter reduction amount for setting the gap value between the outer cylinder 13 and the catalyst 11 to a desired target value (calculation step) C 1 have.
- the calculation unit C1 includes data defining the amount of diameter reduction (specifically, the ram stroke drive amount of the swaging die 21 of the slider 23 described later) corresponding to the detected value (surface pressure value) of the pressing force.
- a table is stored, and a surface pressure value stored in the memory is input, and a diameter reduction amount based on the surface pressure value is calculated.
- the data table stores data for each type of catalyst 11 and mat 12 (for each product).
- the rotary encoder detects the advance / retreat amount and stop position of the pressing member A as rotation information of a ball screw (not shown), and the detected information is also input to the control device C.
- the detection signal of the rotary encoder is converted as the advance / retreat amount and stop position value of the pressing member A and stored in a memory (not shown).
- the advance / retreat amount and stop position value of the pressing member A and the surface pressure value are stored in association with the memory. That is, the positional relationship of the pressing member A when the peak value of the surface pressure value is detected can be grasped. This is used when calculating the diameter reduction described later.
- FIG. 6 is a diagram for explaining a diameter reduction process performed after the press-fitting process.
- A is a schematic view of the catalytic converter as viewed from the side during the diameter reduction, and (b) Also catalytic converter It is the conceptual diagram which represented the circumference with the cross section.
- the diameter reduction performed by swaging will be described.
- the adjustment of the diameter reduction amount by the swaging device 20 is configured to be performed based on the detection result of the pressing force (repulsive force) detected in the press-fitting process.
- the swaging device 20 includes a swaging die 21 having a plurality of fingers 21a, and an inner wall surface 22b on which the fingers 21a of the swaging die 21 are in sliding contact.
- the swaging collar 22 and at least a slider 23 for causing the swaging die 21 to make a ram stroke are provided.
- the sliding surface 21b of each finger 21a with respect to the swaging collar 22 is squeezed toward the ram stroke direction of the swaging die 21 (arrow X direction in FIG. 6 (b): insertion direction). It is formed in an inclined shape so as to be round.
- the swaging collar 22 has a shape that matches the sliding contact surface 21b of the swaging die 21, so that the swaging die 21 is inserted into the swaging collar 22. It is configured to move in the direction of diameter reduction (indicated by the arrow Y in Fig. 6 (a)) when pressed by the swaging collar 22.
- a swaging die 21 composed of a total of 12 fingers 21a that can wrap the entire periphery of the outer cylinder 13 is used. Note that the number of fingers 21a may be appropriately adjusted depending on the size of the outer cylinder 13 or the like.
- Such a swaging die 21 is configured to slide in the ram stroke direction or the counter ram stroke direction by the slider 23.
- the drive control of the slider 23 is performed by the drive control unit 24.
- the drive control of the slider 23 by the drive control unit 24 is based on the detection result of the pressing force (repulsive force) detected in the press-fitting process. This is configured to be performed (reducing step). That is, the diameter reduction data obtained by the control device C in the press-fitting process is input, and the slider 23 is driven and controlled by the drive control amount corresponding to the diameter reduction.
- the drive control amount of the slider 23 is a value that takes into account the influence of the spring back of the outer cylinder 13 while avoiding the risk of damage to the catalyst 11 and the mat 12 by manual input or the like. It can also be set in consideration of the diameter reduction data from the control device C (see Fig. 5 (b)). it can.
- the drive control unit 24 drives the slider 23 to move backward in the anti-ram stroke direction after the diameter reduction processing, and sends a signal for releasing the holding state by the swaging device 20 to the swaging device 20. It has become.
- the mat 12 Prior to swaging, the mat 12 is wound around the outer periphery of the catalyst 11. Then, the ends of the wound mat 12 are stuck with a tape material or the like (not shown). Note that it is not always necessary to perform the sticking with a tape material. Further, when the mat 12 is cylindrical, such a sticking work is not necessary.
- the mat 12 is configured so that convex portions and concave portions (not shown) that engage with each other are formed in advance at both ends, and are wound so that they are engaged during winding. It's okay. Further, it is also possible to wrap the wound mat 12 with a metal sealing material or the like to reduce the thickness of the mat 12 and improve the sealing performance.
- the catalyst 11 wound around the mat 12 is press-fitted into the outer cylinder 13 and inserted in the press-fitting process.
- a diameter-expanding member 30 as shown in FIGS. 3 and 4 is used for insertion.
- the catalyst 11 can be smoothly inserted into the outer cylinder 13, and the mat 12 can be damaged during the insertion, for example, by being caught on the edge of the outer cylinder 13. Can be prevented.
- the pressing force of the pressing member A is detected by the load cell B as shown in FIG.
- the peak value of the pressing force is stored in the memory by the control device C.
- the rear end of the mat 12 wound around the catalyst 11 is expanded. It has been obtained by an experiment by the present inventor that detection is performed at a position immediately before entering the cylindrical portion 32 from the inclined portion 31 of the diameter member 30.
- the pressing force can be detected only when the catalyst 11 passes through the vicinity of the pressure member A. In this case, there is no need to always detect the pressing force, so that the pressing member A can smoothly press-fit, and the time spent on the pressing-in process can be shortened.
- the pressing force at the time of press-fitting tends to increase when the mass and density of the mat 12 are large, and conversely, the outer diameter size of the catalyst 11 and the weight per area of the mat 12 (BW) and density are small! / Sometimes it tends to be small.
- the catalyst 11 and the mat 12 are arranged at a substantially central position in the axial direction of the outer cylinder 13, as shown in FIG. 5 (d).
- the diameter reduction amount is obtained based on the detected pressure data (calculation step), and the data is input to the drive control unit 24 (see FIG. 6B). Then, the drive control unit 24 prepares to perform drive control of the slider 23 in the swaging device 20 based on the input diameter reduction data.
- each finger of the swaging die 21 is placed as shown in FIGS. 6 (a) and 6 (b). 21a is brought into contact with the outer peripheral wall of the outer cylinder 13.
- drive control of the slider 23 is performed by the drive control unit 24, and the slider 23 is ram-stroked by a predetermined amount.
- each finger 21a of the swaging die 21 is driven by a predetermined amount in the diameter reducing direction, and a predetermined amount of diameter reduction by the swaging die 21 and the swaging collar 22 is performed.
- cone-shaped exhaust passages 13 a and 13 b are formed by performing a spinning check on the opening portions on both sides of the outer cylinder 13 of the catalytic converter 10. This A catalytic converter 10 is formed.
- the amount of diameter reduction for setting the gap value between the outer cylinder 13 and the catalyst 11 to a desired target value based on the pressing force at the time of press-fitting. Is calculated, and the reduced diameter check is performed based on the calculated reduced diameter amount.
- the catalyst 11 has a variation in outer diameter
- the mat 12 has a variation in weight (BW) and density per area.
- BW weight
- density per area there are different values. Accordingly, by obtaining the amount of diameter reduction based on such pressing force, it is possible to perform diameter reduction processing that reflects the outer diameter size of the catalyst 11 and the characteristics of the mat 12.
- the pressing force at the time of press-fitting appears as a value reflecting the variation of the catalyst 11 and the mat 12, and if the amount of diameter reduction is uniformly derived from this value, the gap S can be formed appropriately. It becomes possible.
- the gap S (see Fig. 2) is appropriately set despite the variation among products. It can be.
- the problem that occurs when the gap S is not appropriate, such as the catalyst 11 rattling in the outer cylinder 13 or the catalyst 11 being strongly pressed by the surface pressure of the mat 12, is actively avoided.
- the catalytic converter 10 having durability that can withstand long-term use and high product performance can be obtained.
- the diameter reduction processing is performed by obtaining the diameter reduction amount from the detected pressing force. It can be held in the outer cylinder 13 with an appropriate surface pressure and is prevented from being damaged.
- the catalyst 11 since the calculation of the diameter reduction is performed based on the peak value of the pressing force, the catalyst 11 is not strongly held in the outer cylinder with an inappropriate surface pressure, and damage or the like is prevented. It is prevented from occurring. At this time, it is also possible to specify a setting range for detecting the peak value, detect the peak value in the specific range, and calculate the amount of diameter reduction based on this. As a result, it is possible to calculate a reduced diameter amount with less noise and high reliability.
- the diameter reduction processing is not limited to that performed by the swaging device 20, and various methods such as a spinning cage can be employed.
- the diameter reduction process may be performed several times or may be controlled so as to be performed gradually after a good stage.
- a reduced diameter portion 16 is formed at a portion where the catalyst 11 is fixed, which becomes a preliminary reduced diameter for the diameter reduction processing.
- the reduced diameter portion 16 and the non-reduced diameter portions 15a and 15b are formed in the outer cylinder 15, and a funnel-shaped inclined surface is formed between the reduced diameter portion 16 and the non-reduced diameter portion 15a.
- a stepped portion 17 is formed.
- the press-fitting of the catalyst 11 into the outer cylinder 15 is performed by the following procedure. It should be noted that the diameter-expanding member 30 as described above can be press-fitted without being used in the main press-fitting process.
- the catalyst 11 in which the mat 12 is wound is inserted manually from the opening of the outer cylinder 15, for example.
- the pressing member A of the press-fitting device (not shown) is moved downward toward the catalyst 11, and the bottom surface of the pressing member A is brought into close contact with the upper surface of the catalyst 11.
- FIG. 8B the pressing member A is moved downward.
- the catalyst 11 is pressed and moves downward in the outer cylinder 15, and as shown in FIG.
- the rear end portion of the mat 12 is contracted from the step portion 17 in the press-fitting direction of the catalyst 11. It comes to the position just before entering the diameter 16.
- the pressing force by the pressing member A is detected as one peak value by a load cell (not shown) (detection step), and the peak value of the pressing force is stored in the memory by the control device C (see FIG. 5 (b)). Is done.
- a diameter reduction amount is calculated for setting the gap value between the outer cylinder 15 and the catalyst 11 to a desired target value (calculation step). Thereafter, as shown in FIG.
- each finger 21a of the swaging die 21 of the swaging device 20 is brought into contact with the reduced diameter portion 16, and each finger 21a is reduced in the diameter reduction direction. Is driven by a predetermined amount. As a result, a predetermined amount of diameter reduction processing is performed by the swaging die 21 and the swaging collar 22.
- the portion (the reduced diameter portion 16) where the catalyst 11 is fixed in the outer cylinder 15 has a diameter reduction process smaller than the diameter reduction amount in the diameter reduction step before the catalyst 11 is press-fitted. Therefore, the time required for the diameter reduction after the press-fitting of the catalyst 11 is shortened. Further, since the catalyst 11 is press-fitted into the outer cylinder 15 which is in a state close to that after the diameter reduction processing, it is possible to detect the pressing force with higher certainty.
- the detection of the pressing force by the detection step is performed at a position immediately before the rear end portion of the catalyst 11 enters the reduced diameter portion 16 from the step portion 17 formed by the preliminary reduced diameter step. Therefore, it is possible to detect the pressing force that appears as a substantially peak value during press-fitting. This makes it possible to simplify the method for detecting the pressing force, for example, compared to a system that always detects the pressing force during the press-fitting operation. Therefore, this can reduce cost.
- the pressing force is detected by the detection step when the stopped press-fitting operation is restarted by the re-pressing step.
- the pressing force can be detected while reflecting the characteristics of the outer cylinder.
- the amount of diameter reduction can be obtained close to the mounted state.
- the pressing force is detected by the detecting step at the re-pressing step, it is not necessary to detect the pressing force until then, and the catalyst converter having a high detection efficiency is used. A manufacturing method is obtained. Therefore, the method for detecting the pressing force can be simplified as compared with the system in which the pressing force is always detected during the press-fitting operation. Therefore, this can reduce the cost.
- a catalytic converter can be manufactured using a diameter-expanding member 40 having a long cylindrical portion 42 formed therein.
- the diameter-expanding member 40 used in this manufacturing method is formed in such a length that the cylindrical portion 42 can hold the substantially entire length of the catalyst 11, and when the catalyst 11 is press-fitted, as shown in FIG. 9 (b).
- the catalyst 11 is press-fitted at a position where the pressing force has a substantially peak value, substantially the entire catalyst 11 is held by the cylindrical portion 42. In this state, the pressing force is detected.
- the diameter reduction by the swaging device 20 is performed in a state where the catalyst 11 is positioned in the cylindrical portion 42 of the diameter expansion member 40 (FIG. 9 (c)). Thereafter, using the pressing device A, the catalyst 11 is press-fitted into the reduced outer cylinder 13 (see FIG. 9 (d)).
- the upper portion of the outer cylinder 18 may be processed so that the inclined portion 18a is integrally formed with the outer cylinder 18.
- the catalyst 11 is manually inserted into the outer cylinder 18 as shown in FIG. 10 (a)
- the catalyst 11 is inserted in the press-fitting direction of the catalyst 11 as shown in FIG. 10 (b).
- the rear end force of the mat 12 The pressure is detected by the detection step at a position immediately before entering the bent portion 18b of the inclined portion 18a.
- the swaging device 20 reduces the diameter.
- the pressing portion of the catalyst 11 is detected by the press-fitting operation or the detection step of the catalyst 11 using the inclined portion 18a formed integrally with the outer cylinder 18, a separately enlarged member is used. Therefore, it is not necessary to attach this to the outer cylinder 18, and the work at the time of press-fitting can be simplified.
- the inclined portion 18a can be squeezed by a spying cage or the like.
- the catalyst 11 may be wound using a mat 12 having a PP (polypropylene) or PET (polyethylene terephthalate) -based sheet attached to the outer surface.
- PP polypropylene
- PET polyethylene terephthalate
- the pressing force can be stabilized when the pressing force by the pressing device A is detected. This is because it is possible to prevent the binder contained in the mat 12 from adhering to the diameter-expanding members 30 and 40 and causing variations in the friction coefficient when the pressing force is detected.
- PP or PET sheets are less susceptible to humidity, so the pressing force can be detected in a more stable state. The exhaust heat causes the sheet to disappear.
- the force detected by the load cell B (see FIG. 5 (b)) attached to the pressing member A in the reaction force of the pressing force is not limited to this.
- the receiving portion B1 is provided below the outer cylinder 13, and the load cell B is disposed below the receiving portion B1, so that the pressing force by the pressing member A can be detected.
- the diameter expansion member 50 is formed in a C-shaped cross section, and the force (pressure) when the diameter expansion member 50 is cut and the partial force is expanded by the pressing force when the catalyst 11 is press-fitted is measured. Detection may be performed at 1 and 52. In this case, either one of the sensors 51 and 52 may be excluded and the removed side may be fixed to a structure or the like, and the force when expanding may be detected by the sensor 51 (52) disposed only on one side. .
- a through hole 60a is formed at a predetermined interval on the peripheral wall of the diameter expanding member 60, a sensor 61 is attached to the through hole 69a, and the press-fitted catalyst 11 (mat 12) The pressure (surface pressure) may be detected.
- the sensor 61 may be provided in a plurality of stages in the press-fitting direction so as to detect the pressing force stepwise.
- the diameter-expanding member 70 is constituted by a member cover divided into a plurality of parts, and a sensor 72 for detecting the pressing force is arranged for each of the divided diameter-expanding members 70.
- the pressing force can be detected by each sensor by supporting them inside the integral supporting body 71. In this case, if the area that can be detected by each sensor 72 (area that contacts the mat 12) can be increased, the advantage can be obtained.
- the management method includes a determination step for determining whether or not the catalyst 11 of the catalytic converter 10 manufactured by the above-described catalytic converter manufacturing method is held at a predetermined mat filling density. Can also be provided.
- the diameter reduction is performed by the swaging device 20 shown in FIG.
- the catalyst 11 is pressed again by the pressing device A in the reduced outer cylinder 13 so that the catalyst 11 has a mat packing density within a predetermined range or a mat for product management.
- a pass / fail judgment is made as to whether it is within the standard that is the limit value of packing density.
- a cylindrical Hercam-shaped ceramic catalyst having a length of 118 mm and an outer diameter of ⁇ 118.4 mm (actual measurement value: ⁇ 117.1-1 19.7 mm) was prepared. Then, a mat material in which alumina fibers were molded using a binder as a mat for these catalysts was prepared.
- Fig. 15 is a graph showing the relationship between the measured value (18 samples) of the pressing force (kN) and the target outer diameter (mm) for a 118 mm long catalyst. As indicated by the solid line in the figure, The relationship between the pressing force (kN) and the target outer diameter (mm) was derived. The catalytic converter was manufactured by calculating the amount of diameter reduction corresponding to the pressing force from the derived relationship. Table 1 shows the data at this time.
- a conventional manufacturing method is used in which the outer diameter of the product is determined from the outer diameter of the catalyst, and the product is manufactured by reducing the diameter with the aim of a gap so as to obtain a predetermined packing density GBD.
- the data for the manufactured catalytic converter are presented.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Exhaust Gas After Treatment (AREA)
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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CN2005800096450A CN1938500B (zh) | 2004-03-25 | 2005-03-17 | 催化转化器的制造方法、催化转化器、以及催化转化器的控制方法 |
US10/593,645 US8146251B2 (en) | 2004-03-25 | 2005-03-17 | Method of manufacturing catalytic converters |
EP05726690A EP1739290B1 (en) | 2004-03-25 | 2005-03-17 | Method of manufacturing a catalytic converter |
Applications Claiming Priority (2)
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JP2004090410A JP3740154B2 (ja) | 2004-03-25 | 2004-03-25 | 触媒コンバータの製造方法および触媒コンバータ |
JP2004-090410 | 2004-03-25 |
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WO2006008855A1 true WO2006008855A1 (ja) | 2006-01-26 |
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PCT/JP2005/004753 WO2006008855A1 (ja) | 2004-03-25 | 2005-03-17 | 触媒コンバータの製造方法および触媒コンバータ並びに触媒コンバータの管理方法 |
Country Status (6)
Country | Link |
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US (1) | US8146251B2 (ja) |
EP (1) | EP1739290B1 (ja) |
JP (1) | JP3740154B2 (ja) |
KR (1) | KR100826260B1 (ja) |
CN (1) | CN1938500B (ja) |
WO (1) | WO2006008855A1 (ja) |
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US6769281B2 (en) | 2002-03-05 | 2004-08-03 | Sango Co., Ltd. | Method and apparatus of producing a columnar member container |
JP2003343255A (ja) | 2002-05-30 | 2003-12-03 | Sango Co Ltd | ハニカム構造体内蔵浄化装置の製造方法 |
JP4530607B2 (ja) | 2002-08-14 | 2010-08-25 | 株式会社三五 | ハニカム構造体内蔵流体処理装置の製造方法 |
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2004
- 2004-03-25 JP JP2004090410A patent/JP3740154B2/ja not_active Expired - Fee Related
-
2005
- 2005-03-17 EP EP05726690A patent/EP1739290B1/en not_active Expired - Fee Related
- 2005-03-17 US US10/593,645 patent/US8146251B2/en not_active Expired - Fee Related
- 2005-03-17 WO PCT/JP2005/004753 patent/WO2006008855A1/ja active Application Filing
- 2005-03-17 CN CN2005800096450A patent/CN1938500B/zh not_active Expired - Fee Related
- 2005-03-17 KR KR1020067019644A patent/KR100826260B1/ko not_active IP Right Cessation
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JPH10141052A (ja) * | 1996-11-05 | 1998-05-26 | Denso Corp | セラミック触媒コンバータの製造方法及びセラミック触媒コンバータ |
JP2001107725A (ja) * | 1999-08-03 | 2001-04-17 | Sango Co Ltd | 触媒コンバータの製造方法 |
JP2003286836A (ja) * | 2002-01-24 | 2003-10-10 | Sango Co Ltd | 柱体保持装置の製造方法 |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1895119A1 (en) * | 2006-08-24 | 2008-03-05 | Ibiden Co., Ltd. | Holding sealer and exhaust gas processing device |
KR100842195B1 (ko) * | 2006-08-24 | 2008-06-30 | 이비덴 가부시키가이샤 | 유지 시일러 및 배기 가스 처리 장치 |
JP2008267286A (ja) * | 2007-04-20 | 2008-11-06 | Yutaka Giken Co Ltd | 排ガス浄化装置の製造方法 |
ES2969464A1 (es) * | 2024-03-07 | 2024-05-20 | Ballarin Enrique Playan | Método de fabricación de un accesorio de empalme metálico |
Also Published As
Publication number | Publication date |
---|---|
US20070212269A1 (en) | 2007-09-13 |
CN1938500A (zh) | 2007-03-28 |
US8146251B2 (en) | 2012-04-03 |
KR100826260B1 (ko) | 2008-04-29 |
JP3740154B2 (ja) | 2006-02-01 |
EP1739290A4 (en) | 2009-04-08 |
JP2005273586A (ja) | 2005-10-06 |
EP1739290B1 (en) | 2012-07-25 |
CN1938500B (zh) | 2010-05-05 |
EP1739290A1 (en) | 2007-01-03 |
KR20060130677A (ko) | 2006-12-19 |
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