CN103967563A - Exhaust gas purifying catalytic apparatus for small-sized internal combustion engine - Google Patents
Exhaust gas purifying catalytic apparatus for small-sized internal combustion engine Download PDFInfo
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- CN103967563A CN103967563A CN201410039131.0A CN201410039131A CN103967563A CN 103967563 A CN103967563 A CN 103967563A CN 201410039131 A CN201410039131 A CN 201410039131A CN 103967563 A CN103967563 A CN 103967563A
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- soldering
- honeycomb core
- core
- urceolus
- corrugated sheet
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- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Exhaust Gas After Treatment (AREA)
- Catalysts (AREA)
Abstract
The invention provides an exhaust gas purifying catalytic apparatus for a small-sized internal combustion engine and an exhausting apparatus of a vehicle, and can ensure durability and seek for miniaturization and cost reduction. A honeycomb core (91) is formed in a catalytic apparatus (86), the honeycomb core (91) is supported on an outer cylinder (92) made of metal, the honeycomb core (91) is wound by a flat plate (101) in a metal foil shape and a corrugated plate (102) in an overlapped manner, carries a catalyst and comprises multiple layers, a joint position of the flat plate (101) and the corrugated plate (102) of the honeycomb core (91) and a joint position of the honeycomb core (91) and the outer cylinder (92) are arranged near an upstream side where exhaust gas flows.
Description
Technical field
The present invention relates to a kind of compact internal combustion engine waste-gas cleaning catalysis device on the vehicle that motor bike etc. carries compact internal combustion engine and venting gas appliance of vehicle of being located at.
Background technique
In the venting gas appliance of internal-combustion engine, for purifying exhaust air, be provided with the internal-combustion engine waste-gas cleaning catalysis device being formed by the metal honeycomb catalyst of bearing catalyst on metal carrier.As the internal-combustion engine that is equipped on the compact cars such as motor bike waste-gas cleaning catalysis device, knownly formed and by the catalysis device engaging respectively between the flat board of honeycomb structure, corrugated sheet and between honeycomb structure, barrel-type casing by honeycomb structure and the barrel-type casing that supports this honeycomb structure, honeycomb structure is made up of flat board and the corrugated sheet of the metal foil sheet of reeling overlappingly, bearing catalyst (for example,, with reference to patent documentation 1).
Patent documentation 1:(Japan) JP 2007-7585 communique
Patent documentation 2:(Japan) Unexamined Patent 9-267044 communique
In patent documentation 1, dull and stereotyped and the engagement positio of corrugated sheet and the engagement positio of honeycomb structure and barrel-type casing are all near the downstream side setting of the exhaust-gas flow of catalysis device, therefore, in the time of exhaust-gas flow, the temperature of engagement positio is lower than the upstream side of the exhaust-gas flow of catalysis device, and at the upstream side of exhaust device, do not engage with corrugated sheet due to dull and stereotyped, therefore, can on flat board and corrugated sheet, produce the high stress being caused by vibration because of the pressure wave producing in the Pulsating Flow of waste gas, blast, waste gas streams.
In addition, honeycomb structure is configured in the inner side of barrel-type casing and becomes high temperature, and therefore, in upstream side and downstream side, its stress produces difference because of inside and outside temperature difference.
Summary of the invention
The present invention In view of the foregoing makes, and object is to provide a kind ofly can be guaranteed durability and seek miniaturization and the venting gas appliance of the compact internal combustion engine of cost cutting waste-gas cleaning catalysis device and vehicle.
In order to solve the problems of the technologies described above, compact internal combustion engine of the present invention is formed with honeycomb core (91) with waste-gas cleaning catalysis device, and make this honeycomb core (91) be supported on metal urceolus (92), described honeycomb core (91) is wound with flat board (101) and the corrugated sheet (102) of metal foil sheet overlappingly, bearing catalyst and being formed by multilayer, this compact internal combustion engine is characterised in that with waste-gas cleaning catalysis device, the engagement positio of the described flat board (101) of described honeycomb core (91) and the engagement positio of described corrugated sheet (102) and described honeycomb core (91) and described urceolus (92) is all near the upstream side setting of exhaust-gas flow.
According to this structure, by by each engagement positio of the flat board in honeycomb core and corrugated sheet and honeycomb core and urceolus all near the upstream side setting of exhaust-gas flow, can effectively suppress the flat board that caused by blast, pressure wave, the Pulsating Flow of waste gas and the distortion of corrugated sheet, the generation of vibration.
In addition, by by the upstream side soldering of honeycomb core on urceolus, thereby the thermal distortion that can suppress honeycomb core can be reduced in the thermal stress producing on honeycomb core, and, can make to compare that urceolus configures more in the inner part and the heat that becomes the honeycomb core of high temperature is escaped to urceolus, can suppress the temperature rise of honeycomb core.Therefore, can make durability improve.
In addition, can make the further attenuation of thickness of slab of flat board and corrugated sheet, in addition, thereby can make soldering length further shorten suppresses solder amount, engage man-hour, can seek miniaturization, cost cutting.
In said structure, between the described flat board (101) of described honeycomb core (91) and described corrugated sheet (102) and between described honeycomb core (91) and described urceolus (92), also can all be engaged by soldering, the soldering between described flat board (101), described corrugated sheet (102) from the upstream-side-end (91a) of described honeycomb core (91) downstream side also can in the scope of 10mm, implement.According to this structure, the soldering in the case of between dull and stereotyped, corrugated sheet from the upstream-side-end of honeycomb core downstream side exceed 10mm, will there is paillon foil fracture (paper tinsel is cut れ) because of fretting wear.Therefore, by by soldering set positions in the 10mm starting from the upstream-side-end of honeycomb core, can guarantee durability.
In addition, in said structure, more than the soldering width between described flat board (101), described corrugated sheet (102) also can be set as 2mm.According to this structure, by only the part between flat board, corrugated sheet in honeycomb core being carried out to soldering, guarantee intensity thereby can relax thermal stress.
In addition, in said structure, more than the soldering width between described honeycomb core (91), described urceolus (92) also can be set as the soldering width between described flat board (101), described corrugated sheet (102) and in 20mm.According to this structure, more than the soldering width between honeycomb core, urceolus is set as to the soldering width between flat board, corrugated sheet and in 20mm, can guarantee intensity, can make durability improve.
In addition, in said structure, the soldering between described honeycomb core (91), described urceolus (92) also can be carried out up to the same position in downstream side or than Geng Chang position, downstream side along waste gas mobile with respect to the soldering between described flat board (101), described corrugated sheet (102).According to this structure, can utilize the soldering two end part of the soldering portion reinforcement honeycomb core of honeycomb core and urceolus, can be reduced in the stress of the soldering two end part generation of honeycomb core, can make durability further improve.
In addition, in said structure, contact with described corrugated sheet (102) with respect to the described flat board (101) of described honeycomb core (91) can soldering the number of contact position (bonding point), can be less than 40% by the ratio of the number at the contact position of soldering (bonding point) yet.For soldering, ideal situation is that 100% the contact position that will realize original object is all carried out soldering, but in fact its realization is difficult.Pursuing larger soldering ratio when joint rate, the position that originally should not engage also will be passed diffusion bond and be engaged, and brings dysgenic possibility to uprise to durability.For fear of this situation, will, to any one the enforcement non-proliferation processing in for example flat board or corrugated sheet, will cause cost to rise.Therefore the joint rate of, pursuing more than necessary level is not very wise move.Through the relation between actual joint rate and durability is investigated, find the rising along with soldered joint point joint rate, durability improves, but there is no engaged bonding point less than 40% time, durability improves such effect and disappears, and also demonstrated roughly equal durability for the joint rate less than 40%.
Thus, by not being made as less than 40% by the ratio at the bonding point of soldering, can guaranteeing durability and suppress cost and rise.
In addition, in said structure, contact with described corrugated sheet (102) with respect to the described flat board (101) of described honeycomb core (91) can soldering circumferential contact position, can be less than 30% by the ratio of the contact position of soldering yet.Be not that soldering rate is determined by the cylindricity of the honeycomb core of rolling by the contact position of soldering with respect to the ratio of the contact position of dull and stereotyped and corrugated sheet.For example, if corrected while low speed ground is rolled to have enough relaxation times, the cylindricity of honeycomb core just becomes well, but producibility reduces, and therefore, need to find out the suitable joint rate that performance is not reduced, raising producibility.Less than 30 percent in the situation that, can guarantee stable durability.
In the present invention, because the engagement positio of the flat board of honeycomb core and the engagement positio of corrugated sheet and honeycomb core and urceolus is all near the upstream side setting of exhaust-gas flow, therefore can suppress the increase of the stress of the flat board that caused by blast, pressure wave, the Pulsating Flow of waste gas and corrugated sheet.
In addition, by by the upstream side soldering of honeycomb core on urceolus, thereby the thermal distortion that can suppress honeycomb core can be reduced in the thermal stress producing on honeycomb core, and, can make to compare that urceolus configures more in the inner part and the heat that becomes the honeycomb core of high temperature is escaped to urceolus, can suppress the temperature rise of honeycomb core.Therefore, can make durability improve.
In addition, can make the further attenuation of thickness of slab of flat board and corrugated sheet, and, thereby can make soldering length further shorten suppresses solder amount, engage man-hour, can seek miniaturization, cost cutting.
In addition, due between the flat board of honeycomb core and corrugated sheet and be all engaged by soldering between honeycomb core and urceolus, soldering between dull and stereotyped, corrugated sheet from the upstream-side-end of honeycomb core downstream side in the scope of 10mm, implement, therefore, can prevent that the flat board that caused by fretting wear and the paillon foil of corrugated sheet from rupturing, and can guarantee durability.
In addition, due to more than the soldering width between dull and stereotyped, corrugated sheet is set to 2mm, therefore, by only the part between flat board, corrugated sheet in honeycomb core being carried out to soldering, guarantee intensity thereby can relax thermal stress.
In addition, because the soldering width between honeycomb core, urceolus is set in the above and 20mm of soldering width between flat board, corrugated sheet, therefore, can guarantee intensity, can make durability improve.
In addition, because the soldering between honeycomb core, urceolus is carried out up to the same position in downstream side or than Geng Chang position, downstream side with respect to the soldering between dull and stereotyped, corrugated sheet along waste gas mobile, therefore can utilize the soldering portion of honeycomb core and urceolus to strengthen the soldering two end part of honeycomb core, the stress that can be reduced in the soldering two end part generation of honeycomb core, can make durability further improve.
In addition, due to do not contacted with corrugated sheet with respect to the flat board of honeycomb core by the ratio at the bonding point of soldering can soldering bonding point less than 40%, therefore, can guarantee durability and suppress cost and rise.
In addition, due to do not contacted with corrugated sheet with respect to the flat board of honeycomb core by the ratio of the contact position of soldering can soldering circumferential contact position less than 30%, therefore, can guarantee stable durability.
Brief description of the drawings
Fig. 1 is the left side view that has represented to apply the motor bike of a mode of execution of waste-gas cleaning catalysis device of the present invention.
Fig. 2 is the side view that represents venting gas appliance.
Fig. 3 is the sectional view that represents catalyzer container.
Fig. 4 (A) and (B) be the explanatory drawing that represents catalysis device.
Fig. 5 is the cross-sectional view at the main position of the catalytic body of catalysis device upstream side.
Fig. 6 is the schematic diagram of catalysis device.
Fig. 7 (A)～(D) is to the explanatory drawing that different sample represents respectively of the soldering position between the soldering position in honeycomb core and honeycomb core, urceolus.
Fig. 8 (A)～(E) is to the first explanatory drawing that different sample represents respectively of the soldering position in honeycomb core.
Fig. 9 (A)～(F) is to the explanatory drawing that different sample represents respectively of the soldering width in honeycomb core.
Figure 10 (A)～(F) is to the explanatory drawing that different model represents respectively of the soldering width between honeycomb core-urceolus.
Figure 11 (A)～(D) is to the second explanatory drawing that different sample represents respectively of the soldering position in honeycomb core.
Figure 12 (A)～(D) is the explanatory drawing that represents the sample after the evaluation of each experimental example.
Figure 13 is the sectional view that represents the catalysis device of comparative example.
Figure 14 is the effect of catalysis device and the sectional view of effect that represents present embodiment.
Description of reference numerals
10 motor bikes (vehicle)
35 internal-combustion engines
86 waste-gas cleaning catalysis devices
91 catalytic body (honeycomb core)
92 urceolus
93 arrows (identification marking)
101 flat boards
102 corrugated sheets
Embodiment
Below, with reference to accompanying drawing, an embodiment of the present invention is described.It is noted that in declarative procedure being documented in the situation of not doing special record and be identical with respect to the direction of car body of all around and up and down these directions.In addition, the reference character FR shown in each figure represents car body front.In addition, " upstream side " in declarative procedure and in figure represents the upstream side of exhaust-gas flow, and " downstream side " represents the downstream side of exhaust-gas flow.
Fig. 1 is the left side view that has represented to apply the motor bike of a mode of execution of waste-gas cleaning catalysis of the present invention (catalyst) device.
Motor bike 10 comprises: the body framework 11 that becomes skeleton; Front fork 13, it can turn to and be bearing in the head tube 12 that forms these body framework 11 front ends; Be bearing in the power unit 14 of the inner side of body framework 11; Swing arm 18, it is bearing in and is located at the pairing left and right center rest 16 of body framework 11 central part bottoms, the center rest 16 that 16(only illustrates nearside in the mode that can swing up and down via pivot 17) on; Fuel tank 25, it is by forming the pairing left and right body frame 21 on body framework 11 tops, the body frame 21 that 21(only illustrates nearside) supporting; Vehicle seat 26, it is only illustrated the vehicle seat track 22 of nearside by pairing left and right vehicle seat track 22,22() and pairing left and right after-frame 23,23(only illustrate the after-frame 23 of nearside) supporting.
Body framework 11 is by head tube 12, body frame 21, 21, center rest 16, 16, vehicle seat track 22, 22, after-frame 23, 23 and pairing left and right decline frame 28, 28(only illustrates the decline frame 28 of nearside) form, body frame 21, extend the 21 Xiang Xie rear lower sides, rear portion from this head tube 12, center rest 16, 16 respectively from these body frames 21, extend downwards 21 underpart, vehicle seat track 22, 22 respectively from body frame 21, 21 curved part extends to the oblique rear lower side, after-frame 23, 23 respectively from body frame 21, extend 21 Xiang Xie back upper place, underpart, and be linked with vehicle seat track 22 at intermediate portion, 22 rearward end, decline frame 28, 28 rear portions from head tube 12 are at body frame 21, extend 21 the oblique rear lower side of lower direction.
Front fork 13 thereon end is provided with bar-handle 31, can support rotatably front-wheel 33 in underpart via axletree 32.Power unit 14 is made up of the speed changer 36 that becomes the internal-combustion engine 35 of driving source and be located at integratedly these internal-combustion engine 35 rear portions, is bearing on center rest 16,16 and decline frame 28,28.
Internal-combustion engine 35 comprises: the cylinder portion 42 that crankcase 41 and the Xiang Xie front upper place, top from this crankcase 41 erect, be connected with air inlet system 44 at the rear portion of the cylinder head 43 of being located at cylinder portion 42, and be connected with venting gas appliance 46 in the front portion of cylinder head 43.Venting gas appliance 46 is made up of with the baffler 52 of the rearward end that is connected to this outlet pipe the outlet pipe 51 being connected in cylinder head 43.
Swing arm 18 in its back-end portion via axletree 55 supporting wheels 56 rotatably.Trailing wheel 56 comprises driven sprocket 57 integratedly, thus be located at the chain 62 of reeling on the driving sprocket wheel 61 of output shaft 58 of speed changer 36 and driven sprocket 57 from speed changer 36 to trailing wheel 56 transferring power.Should be noted that, reference character 65 in figure is mounted in the headlight of the front portion, top of front fork 13, the 66th, from the front mudguard of top covering front-wheel 33,67,67(only illustrates the reference character 67 of nearside) be buffer cell after the pairing left and right of frame in after-frame 23,23 and swing arm 18, the 68th, from the rear mudguard of top covering trailing wheel 56.
Fig. 2 is the side view that represents venting gas appliance 46.
Outlet pipe 51 comprises: for cylinder head 43(with reference to Fig. 1) flange 71 that is connected, the outlet pipe body 72 extending from these flange 71 sides and be connected to the catalyzer container 73 this outlet pipe body 72.In catalyzer container 73, be accommodated with to from internal-combustion engine 35(with reference to Fig. 1) the waste-gas cleaning catalysis device that purifies of waste gas of discharging.It is noted that reference character 75 is that catalyzer container 73 is connected with baffler 52 and heat insulation thermal shield, 76,77 be used in venting gas appliance 46 is arranged on to body framework 11(with reference to Fig. 1) on installation retainer.
Fig. 3 is the sectional view that represents catalyzer container 73.
Catalyzer container 73 comprises: outer Taper Pipe 82, and it is arranged on the end of downstream side of the anterior outlet pipe body 81 that forms outlet pipe body 72; The heat insulating tube 83 of tubular, it is arranged on the end of downstream side of this outer Taper Pipe 82; Upstream side endosiphuncular tube 84, it is in the end of downstream side of anterior outlet pipe body 81 and than the more downstream installation of outer Taper Pipe 82; Waste-gas cleaning catalysis device 86(is only denoted as " catalysis device 86 " below), it is arranged on the end of downstream side of this upstream side endosiphuncular tube 84; Downstream side endosiphuncular tube 87, its upstream-side-end is arranged on the end of downstream side of this catalysis device 86, and its end of downstream side is arranged on the upstream-side-end of the rear part exhaust tube body 88 that forms outlet pipe body 72.The end of downstream side of heat insulating tube 83 is connected to thermal shield 75(with reference to Fig. 2) upstream-side-end, the end of downstream side of rear part exhaust tube body 88 is connected to baffler 52(with reference to Fig. 2) front end.
In catalysis device 86, catalyzer produces heat and becomes high temperature in the time of purifying exhaust air, therefore utilize heat insulating tube 83 and thermal shield 75 to cover the surrounding of catalysis device 86 via gap and be configured in the downstream side endosiphuncular tube 87 in catalysis device 86 downstream sides and rear part exhaust tube body 88 around.
Catalysis device 86 is made up of columned honeycomb core 91 and urceolus 92, and honeycomb core 91 is by metal carrier and be carried on this supported catalyst and form, and urceolus 92 is arranged on the peripheral part of honeycomb core 91 in order to support this honeycomb core 91.It is noted that the reference character 92a in figure is the axis of urceolus 92.Reference character the 93, the 93rd, is drawn in the arrow on the outer circumferential face of urceolus 92 by mint-mark etc. in order to represent the direction of exhaust-gas flow, such arrow 93,93 is set, can easily hold upstream-side-end 91a and the end of downstream side 91b of honeycomb core 91, the mistake dress can prevent from assembling honeycomb core 91 to urceolus 92 time.
Honeycomb core 91 is that external diameter is the approximate circle column that D, length are L, mostly be external diameter with respect to the ratio D/L=1/2 of length L or following, because catalysis device 86 is mounted in motor bike 10(with reference to Fig. 1) upper, therefore consider vehicle body space and minimum terrain clearance altitude and be formed such elongated shape.
Fig. 4 (A) and Fig. 4 (B) are the explanatory drawings that represents catalysis device 86, and Fig. 4 (A) is main position stereogram, and Fig. 4 (B) is the explanatory drawing that represents the manufacture method of metal beehive carrier 103.
Fig. 5 is that catalysis device 86(is with reference to Fig. 4 (A)) cross-sectional view at the main position of the honeycomb core 91 of upstream side, represent the cross section orthogonal with the urceolus 92a of the urceolus 92 shown in Fig. 3.
As shown in Figure 4 (A), the honeycomb core 91 of catalysis device 86 is made up of metal beehive carrier 103 and catalyzer, metal beehive carrier 103 is formed ojosa by the flat board 101 of the stainless steel of multi-turn of reeling overlappingly and the corrugated sheet 102 of stainless steel, and catalyzer is carried in order to carry out waste-gas cleaning on this metal beehive carrier 103.As above-mentioned stainless steel, preferably for example contain the Ferritic Stainless Steel (20Cr-5Al etc.) of Al.
The surface area that honeycomb core 91 is catalyzer in order to ensure the purifying property of regulation by the surface area of the exhaust passageway passing through for the waste gas the inside of metal beehive carrier 103 is set very greatly, and sought miniaturization to be convenient to being mounted in motor bike 10(with reference to Fig. 1) upper, therefore dull and stereotyped 101 and corrugated sheet 102 used the further attenuation of thickness of slab and be formed as foil-like plate (for example thickness of slab be 30～100 μ m).Particularly, if the number of the exhaust passageway of metal beehive carrier 103 (hole lattice number) is every 1 square inch of 300 hole lattice, thickness of slab is generally 50 μ m, if the number of the exhaust passageway of metal beehive carrier 103 is every 1 square inch of 400 hole lattice, thickness of slab is generally 40 μ m or 30 μ m.
As shown in Fig. 4 (B), manufacture metal beehive carrier 103, first make flat board 101 and corrugated sheet 102 overlapping.Now, not shown solder (being for example made into the scolding tin of Powdered, foil-like or pulp-like) is configured in the both sides of corrugated sheet 102 or dull and stereotyped 101.Then, flat board 101 and corrugated sheet 102 are rolled into multilayer, afterwards, are inserted into urceolus 92(with reference to Fig. 4 (A)), under this state, in the vacuum furnace that is formed as vacuum, be heated to the melt temperature of solder, carry out vacuum brazing.
As shown in Figure 5, between the 102a of peak portion of flat board 101 and corrugated sheet 102 and the 102b of paddy portion, got up by soldering.Reference character 106 in figure is soldering portions of flat board 101 and the 102a of peak portion, the 107th, and the soldering portion of flat board 101 and the 102b of paddy portion.
Soldering portion 106,107 also extends in the positive and negative direction of paper, has guaranteed bond strength.
Fig. 6 is the schematic diagram of catalysis device 86, has schematically shown the cross section along axis 92a of urceolus 92.
In this Fig. 6, be that multiple soldering portion 106 and multiple soldering portion 107 are as soldering portion 111 using the soldering portion 106,107 in the honeycomb core 91 shown in Fig. 5, in addition, be specifically the flat board 101 that becomes the outermost perimembranous of honeycomb core 91 using honeycomb core 91() with the soldering portion of urceolus 92 as soldering portion 112.
The soldering portion 111 of honeycomb core 91 arranges near the upstream-side-end 91a of honeycomb core 91.Soldering portion 111 also can establish to upstream-side-end 91a always.Near part axial intermediate portion and the end of downstream side 91b of honeycomb core 91, dull and stereotyped 101(is with reference to Fig. 5) with corrugated sheet 102 also can be not by soldering.
The soldering length along axis 92a of soldering portion 111 is that axial brazing welding length is L1.The front end of the front end of soldering portion 111 and soldering portion 112 is consistent or be more positioned at downstream side than the front end of soldering portion 112.
As shown in Figure 5, dull and stereotyped 101 are produced soldering portion 106,107 with the 102a of peak portion of corrugated sheet 102 and the 102b of paddy portion soldering, but the in the situation that of actual production, sometimes, even if flat board 101 contacts and can soldering also not carry out soldering with the 102a of peak portion and the 102b of paddy portion.In this case, with respect to dull and stereotyped 101 with the number of the contact position (bonding point) of the 102a of peak portion and the 102b of paddy portion, if not by the ratio of the number at the contact position of soldering (bonding point) less than 40%, can guarantee durability.
Get back to Fig. 6, soldering portion 112 also arranges near the upstream-side-end (the upstream-side-end 91a of honeycomb core 91) of catalysis device 86.Soldering portion 112 also can establish to upstream-side-end 91a always.Near part axial intermediate portion and the end of downstream side of catalysis device 86, honeycomb core 91 also can be by soldering with urceolus 92.
And the soldering length along axis 92a of soldering portion 112 is that axial brazing welding length is L2, side is extended more downstream compared with the end of downstream side of axial brazing welding length L 2 and soldering portion 111.
In the scope of axial brazing welding length L 2, ideal situation be honeycomb core 91 with urceolus 92 week all contact position upwards all carried out soldering, but in fact, circumferentially all to carry out soldering be difficult to whole, so will upwards carry out partly soldering in whole week.In this situation, with respect to whole circumferentially (girth of the inner peripheral surface of the inner peripheral surface of honeycomb core 91 or urceolus 92 (or angle 360 °) that can soldering), if not by the part of soldering in the ratio of the combined length (or total angle of angle) of week length upwards less than 30 percent, just can guarantee durability.
It is noted that in foregoing, even gapped between honeycomb core 91 and urceolus 92, also can contact via solder, can engage, therefore saying into is " contact position ".
Experimental example 1～experimental example 7 based on shown below, illustrates the basis of shape, position, size of each structure of catalysis device 86 described above etc.It is noted that the present invention is not limited to each experimental example.
< experimental example 1>
Fig. 7 (A)～Fig. 7 (D) is to the explanatory drawing that different sample represents respectively of the soldering position between the soldering position in honeycomb core 91 and honeycomb core 91-urceolus 92.Fig. 7 (A) represents catalysis device 121(embodiment 1) explanatory drawing, Fig. 7 (B) represents catalysis device 151(comparative example 1) explanatory drawing, Fig. 7 (C) represents catalysis device 152(comparative example 2) explanatory drawing, Fig. 7 (D) represents catalysis device 153(comparative example 3) explanatory drawing.
As the common-use size of each catalysis device, be D=40mm, L=90mm, 400 hole lattice/square inches, urceolus 92 be the shape that outside urceolus, outstanding amount is 10mm in entrance (upstream) side and outlet (downstream) side with respect to honeycomb core 91 to axial outstanding overhang, prepare soldering structure to make the following sample of various changes, studied its impact.
In the embodiment 1 shown in Fig. 7 (A), the 121b of soldering portion between the 121a of soldering portion in honeycomb core 91 and honeycomb core 91-urceolus 92 is located at respectively near upstream-side-end 91a.
In the comparative example 1 shown in Fig. 7 (B), the 151a of soldering portion in honeycomb core 91 is located near upstream-side-end 91a, the 151b of soldering portion of 92 of honeycomb core 91-urceolus is located near end of downstream side 91b.
In the comparative example 2 shown in Fig. 7 (C), the 152b of soldering portion of 92 of the 152a of soldering portion in honeycomb core 91, honeycomb core 91-urceolus is all located to the intermediate portion between upstream-side-end 91a and end of downstream side 91b.
In the comparative example 3 shown in Fig. 7 (D), the 153a of soldering portion in honeycomb core 91 is located near upstream-side-end 91a, the 153c of soldering portion in honeycomb core 91 is located near end of downstream side 91b, the 153b of soldering portion of 92 of honeycomb core 91-urceolus is located near end of downstream side 91b.
By the cold and hot vibration-testing (of monomer Unit body, cold Hot adds the テ ス ト that shakes) and real vehicle test the durability of above-mentioned catalysis device has been carried out evaluating (durable test).
The cold and hot vibration-testing of monomer is the flange in the inlet side soldering stainless steel system of honeycomb core 91, angle setting by shake unit with 45 °, alternately send into hot blast, cold wind from the inlet side of honeycomb core 91, honeycomb core 91 is placed in to the environment of cold and hot vibrational state, evaluate its durability.Representational test condition is vibration acceleration 30G, 300～900 DEG C of temperature, carried out for 2000 cycles with 2 minutes/cycle.
Real vehicle test is the motor bike of 125cc is placed on chassis dynamometer and makes engine running while increase cooling and heating load, exceedes under the load of actual service conditions utilizing vibrating chassis power measurer increase vibrational loading, carries out durability test.
Then,, by the generation that has or not core to come off, the generation that has or not paillon foil fracture, core distortion, monomer test (the cold and hot vibration-testing of monomer) and the product that complete of durable test have been carried out to synthetic determination.
The result of the durable test of above-mentioned each catalysis device is indicated in table 1.
[table 1]
Projects:
Zero: do not occur
×: occur
△: phenomenon occurs, but is non-lethal level
Embodiment 1 comes off at the core of monomer test, the core of the distortion of hole lattice, real vehicle test comes off, all no problem aspect core cut-out, synthetic determination is zero (qualified).
There is core and come off in comparative example 1, so do not carry out real vehicle test, therefore synthetic determination is × (defective) in monomer test.
Comparative example 2 inlet side at honeycomb core in the time that real vehicle is tested ruptures because dull and stereotyped paillon foil has occurred in fretting wear (fretting: fretting wear), and therefore synthetic determination is × (defective).
Especially there is significantly hole lattice distortion at honeycomb core central part in comparative example 3, therefore synthetic determination is × (defective) in monomer test.
Hence one can see that, and embodiment 1 is good.
< experimental example 2>
Fig. 8 (A)～Fig. 8 (E) is to the explanatory drawing that different sample represents respectively of the soldering position in honeycomb core 91.Fig. 8 (A) represents catalysis device 122(embodiment 2) explanatory drawing, Fig. 8 (B) represents catalysis device 123(embodiment 3) explanatory drawing, Fig. 8 (C) represents catalysis device 124(embodiment 4) explanatory drawing, Fig. 8 (D) represents catalysis device 154(comparative example 4) explanatory drawing, Fig. 8 (E) represents catalysis device 155(comparative example 5) explanatory drawing.
As the common-use size of each catalysis device, be D=40mm, L=120mm, 300 hole lattice/square inches, urceolus outward outstanding amount be the shape of 10mm at inlet side and outlet side, soldering between the soldering in honeycomb core 91 and honeycomb core 91-urceolus 92 is all only located to the inlet side of honeycomb core 91, soldering width in honeycomb core 91 is fixed on to 3mm, its width is set as 15mm by the soldering that honeycomb core 91-urceolus is 92, and come into effect soldering from the upstream-side-end 91a of honeycomb core 91.
On the basis of above-mentioned common-use size, prepare to change the following sample of the soldering position in honeycomb core 91, study its impact.
Reference character LC1～LC5 in figure is the soldering position in honeycomb core 91, is the central length from the upstream-side-end 91a of honeycomb core 91 to soldering width.
In the embodiment 2 shown in Fig. 8 (A), be LC1=1.5mm by the set positions of the 122a of soldering portion in honeycomb core 91.
In the embodiment 3 shown in Fig. 8 (B), be LC2=5mm by the set positions of the 123a of soldering portion in honeycomb core 91.
In the embodiment 4 shown in Fig. 8 (C), be LC3=8.5mm by the set positions of the 124a of soldering portion in honeycomb core 91.
In the comparative example 4 shown in Fig. 8 (D), be LC4=13.5mm by the set positions of the 154a of soldering portion in honeycomb core 91.
In the comparative example 5 shown in Fig. 8 (E), be LC5=16.5mm by the set positions of the 155a of soldering portion in honeycomb core 91.
Carried out the durable test of above-mentioned each catalysis device by the method same with experimental example 1.
The result of durable test is indicated in table 2.
[table 2]
The core project that comes off:
In zero: 2000 cycle, come off without core
△: core occurred in 1000～2000 cycles and come off
×: just there is core less than 1000 cycles and come off
Embodiment 2 comes off at the core of monomer test, the core of the distortion of hole lattice, real vehicle test comes off, all no problem aspect core cut-out, synthetic determination is zero (qualified).
Embodiment 3 comes off at the core of monomer test, the core of the distortion of hole lattice, real vehicle test comes off, all no problem aspect core cut-out, synthetic determination is zero (qualified).
Embodiment 4 comes off at the core of monomer test, the core of the distortion of hole lattice, real vehicle test comes off, all no problem aspect core cut-out, synthetic determination is zero (qualified).
There is paillon foil fracture in comparative example 4, therefore synthetic determination is × (defective) in real vehicle test.
There is core and come off in comparative example 5, in real vehicle test, paillon foil fracture has occurred in monomer test, and therefore synthetic determination is × (defective).
As above, if the soldering position in honeycomb core 91 is in the 8.5mm+1.5mm=10mm starting from the upstream-side-end 91a of honeycomb core 91, meet durability, if but exceed 10mm, on flat board, there is be full of cracks in the fretting wear that is easy to cause because of waste gas.Therefore, by the soldering set positions in honeycomb core 91 in the 10mm starting from upstream-side-end 91a.
< experimental example 3>
Fig. 9 (A)～Fig. 9 (F) is to the explanatory drawing that different sample represents respectively of the soldering width in honeycomb core 91.Fig. 9 (A) represents catalysis device 156(comparative example 6) explanatory drawing, Fig. 9 (B) represents catalysis device 125(embodiment 5) explanatory drawing, Fig. 9 (C) represents catalysis device 126(embodiment 6) explanatory drawing, Fig. 9 (D) represents catalysis device 127(embodiment 7) explanatory drawing, Fig. 9 (E) represents catalysis device 157(comparative example 7) explanatory drawing, Fig. 9 (F) represents catalysis device 158(comparative example 8) explanatory drawing.
As the common-use size of each catalysis device, be D=51mm, L=75mm, 400 hole lattice/square inches, urceolus outward outstanding amount be the shape of 10mm at inlet side and outlet side, soldering position in honeycomb core 91 is set so that the position that starts 5mm from upstream-side-end 91a becomes the center of soldering width, for soldering width greatly, upstream side is crossed the catalysis device of upstream-side-end 91a, upstream-side-end 91a is set to soldering width as the end of soldering portion, the soldering width of 92 of honeycomb core 91-urceolus is made as to 15mm.
On the basis of above-mentioned common-use size, prepare to change the following sample of the soldering width in honeycomb core 91, study its impact.
In the comparative example 6 shown in Fig. 9 (A), the soldering width of the 156a of soldering portion in honeycomb core 91 is set as to LW1=1mm.
In the embodiment 5 shown in Fig. 9 (B), the soldering width of the 125a of soldering portion in honeycomb core 91 is set as to LW2=2mm.
In the embodiment 6 shown in Fig. 9 (C), the soldering width of the 126a of soldering portion in honeycomb core 91 is set as to LW3=5mm.
In the embodiment 7 shown in Fig. 9 (D), the soldering width of the 127a of soldering portion in honeycomb core 91 is set as to LW4=10mm.
In the comparative example 7 shown in Fig. 9 (E), the soldering width of the 157a of soldering portion in honeycomb core 91 is set as to LW5=15mm.
In the comparative example 8 shown in Fig. 9 (F), the soldering width of the 158a of soldering portion in honeycomb core 91 is set as to LW6=20mm.
Carried out the durable test of each catalysis device by the method same with experimental example 1.
The result of durable test is indicated in table 3.
[table 3]
Hole lattice distortion project:
Zero: the crushing after test changes below 20%
△: the crushing after test changes 20～30%
×: the crushing after test changes more than 30%
There is core and come off in comparative example 6, so do not carry out real vehicle test, therefore synthetic determination is × (defective) in monomer test.
Embodiment 5 comes off at the core of monomer test, the core of the distortion of hole lattice, real vehicle test comes off, all no problem aspect core cut-out, synthetic determination is zero (qualified).
Embodiment 6 comes off at the core of monomer test, the core of the distortion of hole lattice, real vehicle test comes off, all no problem aspect core cut-out, synthetic determination is zero (qualified).
Embodiment 7 comes off at the core of monomer test, the core of the distortion of hole lattice, real vehicle test comes off, all no problem aspect core cut-out, synthetic determination is zero (qualified).
Comparative example 7 has occurred in monomer test that core comes off and the distortion of hole lattice, and therefore synthetic determination is × (defective).
Comparative example 8 has occurred in monomer test that core comes off and the distortion of hole lattice, and therefore synthetic determination is × (defective).
As above, at soldering width, lower than 2mm in the situation that,, there is core and come off in soldering strength deficiency in durable test.On the other hand, in the situation that soldering width exceedes 10mm, the width of soldering is large, becomes large so the stress being caused by heat within the scope of this is concentrated, and becomes and is easy to chap from soldering end, and durability declines and the distortion of hole lattice becomes large.
According to above result, more than the soldering width in honeycomb core 91 is set in to 2mm and below 10mm.
It is noted that said " soldering width " herein, refer to the effective width of having considered by the sagging of solder, the deviation causing such as having oozed out, not exclusively engage, is the mean value of entirety roughly.
Even inner side and outside at flat board or corrugated sheet change the position of (moving) soldering, also represent the width of each soldering portion of corrugated sheet and flat board, in addition, in the situation that being provided with many places soldering portion, the upstream-side-end of multiple soldering portion is made as to soldering width to the distance of end of downstream side.
< experimental example 4>
Figure 10 (A)～Figure 10 (F) is to the soldering width of 92 of the honeycomb core 91-urceolus explanatory drawing that different sample represents respectively.Figure 10 (A) represents catalysis device 159(comparative example 9) explanatory drawing, Figure 10 (B) represents catalysis device 128(embodiment 8) explanatory drawing, Figure 10 (C) represents catalysis device 129(embodiment 9) explanatory drawing, Figure 10 (D) represents catalysis device 130(embodiment 10) explanatory drawing, Figure 10 (E) represents catalysis device 160(comparative example 10) explanatory drawing, Figure 10 (F) represents catalysis device 131(embodiment 11) explanatory drawing.
As the common-use size of each catalysis device, it is D=40mm, L=90mm, the urceolus outstanding shape that is 10mm at inlet side, outlet side of measuring outward, soldering width in honeycomb core 91 is made as to 5mm, its position (center of soldering width) is fixed on to the LT=7.5mm starting from upstream-side-end 91a.
On the basis of above-mentioned common-use size, prepare the following sample of the soldering width that changes 92 of honeycomb core 91-urceolus, study its impact.
In the comparative example 9 shown in Figure 10 (A), the soldering width of the 159b of soldering portion of 92 of honeycomb core 91-urceolus is set as to LX1=2.5mm.
In the embodiment 8 shown in Figure 10 (B), the soldering width of the 128b of soldering portion of 92 of honeycomb core 91-urceolus is set as to LX2=5mm.
In the embodiment 9 shown in Figure 10 (C), the soldering width of the 129b of soldering portion of 92 of honeycomb core 91-urceolus is set as to LX3=10mm.
In the embodiment 10 shown in Figure 10 (D), the soldering width of the 130b of soldering portion of 92 of honeycomb core 91-urceolus is set as to LX4=20mm.
In the comparative example 10 shown in Figure 10 (E), the soldering width of the 160b of soldering portion of 92 of honeycomb core 91-urceolus is set as to LX5=25mm.
In the embodiment 11 shown in Figure 10 (F), the 131b of soldering portion of 92 of honeycomb core 91-urceolus, the soldering width of 131d are set as respectively to LX6=3mm.
Carried out the durable test of each catalysis device by the method same with experimental example 1.
The result of durable test is indicated in table 4.
[table 4]
There is core and come off in comparative example 9, so do not carry out real vehicle test, therefore synthetic determination is × (defective) in monomer test.
Embodiment 8 comes off at the core of monomer test, the core of the distortion of hole lattice, real vehicle test comes off, all no problem aspect core cut-out, synthetic determination is zero (qualified).
Embodiment 9 comes off at the core of monomer test, the core of the distortion of hole lattice, real vehicle test comes off, all no problem aspect core cut-out, synthetic determination is zero (qualified).
Embodiment 10 comes off at the core of monomer test, the core of the distortion of hole lattice, real vehicle test comes off, all no problem aspect core cut-out, synthetic determination is zero (qualified).
Comparative example 10 has occurred in monomer test that core comes off and the distortion of hole lattice, and therefore synthetic determination is × (defective).
Embodiment 11 comes off at the core of monomer test, the core of the distortion of hole lattice, real vehicle test comes off, all no problem aspect core cut-out, synthetic determination is zero (qualified).
As above, the soldering portion that honeycomb core 91-urceolus is 92 is owing to being to be easy to be subject to the concentrated part of stress most, more than therefore needing to be guaranteed the soldering width in honeycomb core 91.But, if exceed 20mm, the width of soldering is large, becomes large so the stress being caused by heat within the scope of this is concentrated, become be easy to chap from soldering end, large hole lattice distortion, durability decline.
In the situation that being provided with many places soldering portion, more than it adds up to the soldering width soldering width in honeycomb core 91 and be set in the 20mm from upstream-side-end 91a.
< experimental example 5>
Figure 11 (A)～Figure 11 (D) is to the explanatory drawing that different sample represents respectively of the soldering position in honeycomb core 91.Figure 11 (A) represents catalysis device 132(embodiment 12) explanatory drawing, Figure 11 (B) represents catalysis device 133(embodiment 13) explanatory drawing, Figure 11 (C) represents catalysis device 161(comparative example 11) explanatory drawing, Figure 11 (D) represents catalysis device 162(comparative example 12) explanatory drawing.
As the common-use size of each catalysis device, be D=40mm, L=90mm, 300 hole lattice/square inches, urceolus outward outstanding amount be the shape of 10mm at inlet side and outlet side, soldering width in honeycomb core 91 is made as to 10mm, the soldering width of 92 of honeycomb core 91-urceolus is made as to 15mm.
In this experimental example 5, by changing the soldering position in honeycomb core 91 and making the soldering width in honeycomb core 91 larger than experimental example 2, the following sample of having prepared to make the relation of the soldering position between soldering position and the honeycomb core 91-urceolus 92 of honeycomb core 91 significantly to change, has studied its impact.
Reference character LU1～LU4 in figure is the soldering position in honeycomb core 91, is the central length from the upstream-side-end 91a of honeycomb core 91 to soldering width.
In the embodiment 12 shown in Figure 11 (A), be LU1=5mm by the set positions of the 132a of soldering portion in honeycomb core 91.
In the embodiment 13 shown in Figure 11 (B), be LU2=10mm by the set positions of the 133a of soldering portion in honeycomb core 91.
In the comparative example 11 shown in Figure 11 (C), be LU3=15mm by the set positions of the 161a of soldering portion in honeycomb core 91.
In the comparative example 12 shown in Figure 11 (D), be LU4=20mm by the set positions of the 162a of soldering portion in honeycomb core 91.
Carried out the durable test of each catalysis device by the method same with experimental example 1.
The result of durable test is indicated in table 5.
[table 5]
Embodiment 12 comes off at the core of monomer test, the core of the distortion of hole lattice, real vehicle test comes off, all no problem aspect core cut-out, synthetic determination is zero (qualified).
Embodiment 13 comes off at the core of monomer test, the core of the distortion of hole lattice, real vehicle test comes off, all no problem aspect core cut-out, synthetic determination is zero (qualified).
There is core and come off in comparative example 11, in real vehicle test, paillon foil fracture has occurred in monomer test, and therefore synthetic determination is × (defective).
Comparative example 12 has occurred in monomer test that core comes off and the distortion of hole lattice, so do not carry out real vehicle test, therefore synthetic determination is × (defective).
Thus, produce maximum stress at the terminal part (end of downstream side) of the soldering portion of 92 of honeycomb core 91-urceolus.Known, the position that makes the soldering portion in honeycomb core 91 swim more on the lower than the terminal part of the soldering portion of 92 of honeycomb core 91-urceolus in order to disperse this stress stops, durability declines.
< experimental example 6>
In real soldering, realizing 100% joint with respect to the bonding point that can engage between the flat board in honeycomb core 91 and corrugated sheet is difficult, therefore, by solder is not set in the part at the bonding point in honeycomb core 91, prepared to change actual by the number at the bonding point of soldering the sample with respect to the ratio of the number at the bonding point in honeycomb core 91, studied its impact.
As for the common-use size of test specimen, it is D=40mm, L=90mm, 400 hole lattice/square inches, the urceolus outstanding shape that is 10mm at inlet side and outlet side of measuring outward.In addition, soldering width in honeycomb core 91 is made as to 3mm, the central authorities that the position that starts 5mm from the upstream-side-end 91a of honeycomb core 91 are made as to soldering width, are made as 10mm by the soldering width of 92 of honeycomb core 91-urceolus, start to have carried out soldering from the upstream-side-end 91a of honeycomb core 91.
Carry out durable test by the method same with experimental example 1.
Joint rate (unit be %) and the result of durable test of sample within the scope of soldered joint is indicated in table 6.
[table 6]
Embodiment 14 joint rate is 100%, come off at the core of monomer test, the core of the distortion of hole lattice, real vehicle test comes off, all no problem aspect core cut-out, synthetic determination is zero (qualified).
Embodiment 15 joint rate is 80%, come off at the core of monomer test, the core of the distortion of hole lattice, real vehicle test comes off, all no problem aspect core cut-out, synthetic determination is zero (qualified).
Embodiment 16 joint rate is 70%, come off at the core of monomer test, the core of the distortion of hole lattice, real vehicle test comes off, all no problem aspect core cut-out, synthetic determination is zero (qualified).
Embodiment 17 joint rate is 60%, come off at the core of monomer test, the core of the distortion of hole lattice, real vehicle test comes off, all no problem aspect core cut-out, synthetic determination is zero (qualified).
The joint rate of comparative example 13 is 50%, in monomer test, core has occurred and has come off, and therefore synthetic determination is × (defective).
The joint rate of comparative example 14 is 40%, in monomer test, core has occurred and has come off, so do not carry out real vehicle test, therefore synthetic determination is × (defective).
Hence one can see that, even if the joint rate of soldered joint scope reduces, as long as more than 60% being engaged within engagement range just can be guaranteed enough durability.
< experimental example 7>
Prepared in the soldering of 92 of honeycomb core 91-urceolus to determine partly the setting position of solder, by the part of soldering at the combined length (or total angle of angle) of week length upwards with respect to whole circumferentially (girth of the inner peripheral surface of the outer circumferential face of honeycomb core 91 or urceolus 92 (or angle 360 °) that can soldering) sample, studied its impact.
As for the common-use size of test specimen, it is D=40mm, L=90mm, 400 hole lattice/square inches, the urceolus outstanding shape that is 10mm at inlet side and outlet side of measuring outward.In addition, the soldering width in honeycomb core 91 is made as to 3mm, starts to have carried out soldering from the upstream-side-end 91a of honeycomb core 91.
Carry out durable test by the method same with experimental example 1.
Sample the joint rate of (circumferentially (establishing complete cycle is 100%)) and result of durable test within the scope of soldered joint are indicated in table 7.
[table 7]
Embodiment 18 joint rate is 100%, come off at the core of monomer test, the core of the distortion of hole lattice, real vehicle test comes off, all no problem aspect core cut-out, synthetic determination is zero (qualified).
Embodiment 19 joint rate is 80%, come off at the core of monomer test, the core of the distortion of hole lattice, real vehicle test comes off, all no problem aspect core cut-out, synthetic determination is zero (qualified).
Embodiment 20 joint rate is 70%, come off at the core of monomer test, the core of the distortion of hole lattice, real vehicle test comes off, all no problem aspect core cut-out, synthetic determination is zero (qualified).
The joint rate of comparative example 15 is 60%, in monomer test, core has occurred and has come off, and therefore synthetic determination is × (defective).
The joint rate of comparative example 16 is 50%, in monomer test, core has occurred and has come off, so do not carry out real vehicle test, therefore synthetic determination is × (defective).
The joint rate of comparative example 17 is 40%, in monomer test, core has occurred and has come off, so do not carry out real vehicle test, therefore synthetic determination is × (defective).
As above known, even if the soldered joint rate of 92 of honeycomb core 91-urceolus reduces, as long as guarantee more than 70% joint rate, just can guarantee enough durability.
Figure 12 (A)～Figure 12 (D) is the explanatory drawing that represents the sample after the evaluation of each experimental example.
Figure 12 (A) is the main position plan view that is illustrated in the upstream-side-end 91a of embodiment's qualified in each experimental example honeycomb core 91, and the state that flat board 101 and corrugated sheet 102 are compared before evaluation does not almost change.
Figure 12 (B) is the first explanatory drawing that represents the catalysis device of the comparative example of each experimental example, represents that the anastomosis part of 92 of honeycomb core 91-urceolus separates, the state that core comes off occurs.
Figure 12 (C) is the first explanatory drawing that represents the honeycomb core 91 of the comparative example of each experimental example, represents that the state of paillon foil fracture occurs at the upstream-side-end 91a of honeycomb core 91 for flat board 101 and corrugated sheet 102.
Figure 12 (D) is the second explanatory drawing that represents the honeycomb core 91 of the comparative example of each experimental example, be illustrated in the upstream-side-end 91a of honeycomb core 91, dull and stereotyped 101 and corrugated sheet 102 is out of shape, by dull and stereotyped 101 and the deform state of (distortion of hole lattice) of multiple holes lattice of forming of corrugated sheet 102.
Utilize Figure 13 and effect and the effect of Figure 14 to catalysis device 86 described above below to compare explanation.
Figure 13 is the sectional view that represents the catalysis device 170 of comparative example.
In catalysis device 170, with respect to the catalysis device 86 shown in Fig. 6, the flat board 101 of honeycomb core 91 is different with the soldering position of urceolus 92 with the soldering position of corrugated sheet 102 and honeycomb core 91., dull and stereotyped 101 with the soldering position of the soldering position of corrugated sheet 102 and honeycomb core 91 and urceolus 92 all near the end of downstream side setting of catalysis device 170.
So, upstream side part not by the catalysis device 170 of soldering in, as shown in hollow arrow, if waste gas flows from upstream side, the flat board 101 of foil-like and the especially upstream-side-end 91a of corrugated sheet 102 and near part thereof are by owing to not having the constraint of soldering to be easy to, because blast, pressure wave that exhaust-gas flow causes deform, be easy in addition produce vibration because of the Pulsating Flow of waste gas.If the amplitude of such distortion, vibration becomes large, will there is fretting wear in flat board 101 and corrugated sheet 102, by producing large stress, likely cause generation, the fracture of be full of cracks in addition.
And, with respect to urceolus 92, the temperature of the honeycomb core 91 of central part side is high, but in the downstream side of catalysis device 170, due to honeycomb core 91 with urceolus 92 by soldering, so thereby heat is easy to transmit escape from honeycomb core 91 to urceolus 92, but at upstream side, due to honeycomb core 91 with urceolus 92 not by soldering, so heat accumulation is in honeycomb core 91 and become high temperature, therefore unfavorable aspect durability.
Figure 14 is the effect of catalysis device 86 and the sectional view of effect that represents present embodiment.
By the upstream side soldering at honeycomb core 91 dull and stereotyped 101 and corrugated sheet 102, and at upstream side soldering honeycomb core 91 and the urceolus 92 of catalysis device 86, the flat board 101 of upstream side is retrained mutually with corrugated sheet 102, make in addition the upstream side of honeycomb core 91 suffer restraints with respect to urceolus 92.Therefore, flow and while coming to catalysis device 86 as shown in hollow arrow at waste gas, can suppress dull and stereotyped 101 and corrugated sheet 102 especially upstream-side-end 91a and near part thereof deform or vibrate because of the Pulsating Flow of waste gas because of blast, the pressure wave of waste gas.
In addition, as shown in arrow A, A, can impel from the central part side direction outer circumferential side of honeycomb core 91 and conduct heat and conduct heat to urceolus 92 from honeycomb core 91, can suppress the temperature rise of honeycomb core 91.Thus, can prevent that hole lattice distortion, paillon foil fracture, the core of honeycomb core 91 from coming off, can make durability improve.Therefore, can, in the case of guaranteeing certain durability, make the further attenuation of thickness of slab of flat board 101 and corrugated sheet 102 or soldering length is further shortened, from the results of view, can reduce solder amount, engage man-hour, can seek miniaturization, the cost cutting of catalysis device 86.
As shown in above-mentioned Fig. 4 (A), Fig. 4 (B) and Fig. 6, at internal-combustion engine 35(with reference to Fig. 1) in the catalysis device 86 of use, be formed with as the flat board 101 of multilayer-wound metal foil sheet and the honeycomb core 91 of the honeycomb core that corrugated sheet 102 forms overlappingly, and this honeycomb core 91 is supported on metal urceolus 92, the engagement positio of the engagement positio of the flat board of honeycomb core 91 101 and corrugated sheet 102 and honeycomb core 91 and urceolus 92 is all near the upstream side setting of exhaust-gas flow.
According to this structure, by by each engagement positio of the flat board in honeycomb core 91 101 and corrugated sheet 102 and honeycomb core 91 and urceolus 92 all near the upstream side setting of exhaust-gas flow, the flat board 101 that caused by blast, pressure wave, the Pulsating Flow of waste gas and the distortion of corrugated sheet 102, the generation of vibration can be effectively suppressed, the increase of stress can be suppressed.
In addition, by by the upstream side soldering of honeycomb core 91 on urceolus 92, can suppress the thermal distortion of the upstream side of honeycomb core 91, thereby can be reduced in the thermal stress producing on honeycomb core 91, and, can make to compare that urceolus 92 configures more in the inner part and the heat that becomes the upstream side of the honeycomb core 91 of high temperature is escaped to urceolus 92, can suppress the temperature rise of honeycomb core 91.Therefore, can make the further attenuation of thickness of slab of flat board 101 and corrugated sheet 102, in addition, thereby can make soldering length further shorten suppresses solder amount, engage man-hour, can seek catalysis device 86 and then is that venting gas appliance 46(is with reference to Fig. 1) miniaturization, cost cutting.
So, in catalysis device 86, on the one hand for thereby small-scale structure reduces aeration resistance raising engine performance by flat board 101 and corrugated sheet 102 are made to feed thin foil strips on the one hand, even for the blast of waste gas, pressure wave, also can be by its inlet side be engaged to stand blast, pressure wave, and, honeycomb core 91 and urceolus 92 also allow mutual activity and are formed as rectangular structure by joining portion is not set in downstream side, honeycomb core 91 and urceolus 92 are stablized to be remained in venting gas appliance 46, therefore, can be formed as suppressing to engage man-hour, small-sized and cheap structure.
In addition, as shown in Fig. 4 (A), Fig. 4 (B), Fig. 6 and Fig. 8 (A)～Fig. 8 (C), between the flat board 101 of honeycomb core 91 and corrugated sheet 102 and between honeycomb core 91 and urceolus 92, be all engaged by soldering, the soldering that dull and stereotyped 101, corrugated sheet is 102 from the upstream-side-end 91a of honeycomb core 91 downstream side in the scope of 10mm, implement, therefore, in the case of the soldering of 102 of dull and stereotyped 101, corrugated sheets from the upstream-side-end 91a of honeycomb core 91 downstream side exceed 10mm, will there is paillon foil fracture because of fretting wear.Therefore, by by soldering set positions in the 10mm starting from the upstream-side-end 91a of honeycomb core 91, can guarantee the durability of honeycomb core 91.
In addition, as shown in Fig. 4 (A), Fig. 4 (B), Fig. 6 and Fig. 9 (B)～Fig. 9 (D), the soldering width that dull and stereotyped 101, corrugated sheet is 102 is at least set as 2mm, therefore, can be by only a part for 102 of the flat boards 101 in honeycomb core 91, corrugated sheet being carried out to soldering, thus the thermal stress that relaxes honeycomb core 91 is guaranteed intensity.
In addition, as shown in Fig. 6, Figure 10 (B)～Figure 10 (D), that the soldering width that honeycomb core 91, urceolus are 92 is set to is dull and stereotyped 101, the soldering width of 102 of corrugated sheets is above and 20mm in, therefore, can guarantee the intensity of honeycomb core 91, can make durability improve.
In addition, as shown in Figure 6, the soldering that honeycomb core 91, urceolus are 92 is carried out up to than Geng Chang position, its downstream side along the mobile of waste gas with respect to the soldering of 102 of dull and stereotyped 101, corrugated sheets, therefore can utilize honeycomb core 91 and the soldering portion 108 of urceolus 92 to strengthen the two end part of the soldering portion 106,107 of honeycomb core 91, the stress that can be reduced in the two end part generation of the soldering portion 106,107 of honeycomb core 91, can make durability further improve.
In addition, as shown in Figures 5 and 6, contact with corrugated sheet 102 with respect to the flat board 101 of honeycomb core 91 can soldering the number at bonding point, not by the ratio of the number at the bonding point of soldering less than 40%, therefore,, in honeycomb core 91, can guarantee durability and suppress cost and rise.
In addition, contact with corrugated sheet 102 with respect to the flat board 101 of honeycomb core 91 can soldering circumferential contact position, not by the ratio of the contact position of soldering less than 30%, therefore, can guarantee stable durability.
Above-mentioned mode of execution at most also just represents a kind of form of the present invention, in the scope that does not depart from purport of the present invention, can at random be out of shape and apply.
For example, in the above-described embodiment, as shown in Figure 6, the soldering length of multiple soldering portion 106,107 is as one man made as L1, but be not limited to this, both can make soldering portion 106 each other, soldering length each other of soldering portion 107 is consistent respectively, can make again the soldering length of each soldering portion 106,107 inconsistent.
In addition, the present invention is not limited to situation about applying in dilly, can also be applied in large-scale motor bike 10 and four-wheel car.
Claims (7)
1. a compact internal combustion engine waste-gas cleaning catalysis device, be formed with honeycomb core (91), and make this honeycomb core (91) be supported on metal urceolus (92), described honeycomb core (91) is wound with flat board (101) and the corrugated sheet (102) of metal foil sheet overlappingly, bearing catalyst and being formed by multilayer
This compact internal combustion engine is characterised in that with waste-gas cleaning catalysis device, and the engagement positio of the described flat board (101) of described honeycomb core (91) and the engagement positio of described corrugated sheet (102) and described honeycomb core (91) and described urceolus (92) is all near the upstream side setting of exhaust-gas flow.
2. compact internal combustion engine as claimed in claim 1 waste-gas cleaning catalysis device, it is characterized in that, between the described flat board (101) of described honeycomb core (91) and described corrugated sheet (102) and between described honeycomb core (91) and described urceolus (92), be all engaged by soldering, the soldering between described flat board (101), described corrugated sheet (102) from the upstream-side-end (91a) of described honeycomb core (91) downstream side in the scope of 10mm, implement.
3. compact internal combustion engine as claimed in claim 2 waste-gas cleaning catalysis device, is characterized in that, more than the soldering width between described flat board (101), described corrugated sheet (102) is set as 2mm.
4. compact internal combustion engine as claimed in claim 3 waste-gas cleaning catalysis device, it is characterized in that, more than the soldering width between described honeycomb core (91), described urceolus (92) is set as the soldering width between described flat board (101), described corrugated sheet (102) and in 20mm.
5. the waste-gas cleaning catalysis device of the compact internal combustion engine as described in any one in claim 2 to 4, it is characterized in that, the soldering between described honeycomb core (91), described urceolus (92) is carried out up to the same position in downstream side or than Geng Chang position, downstream side with respect to the soldering between described flat board (101), described corrugated sheet (102) along waste gas mobile.
6. the waste-gas cleaning catalysis device of the compact internal combustion engine as described in any one in claim 2 to 5, it is characterized in that, contact with described corrugated sheet (102) with respect to the described flat board (101) of described honeycomb core (91) can soldering the number of contact position, not by the ratio of the number of the contact position of soldering less than 40%.
7. the waste-gas cleaning catalysis device of the compact internal combustion engine as described in any one in claim 2 to 5, it is characterized in that, with respect to described honeycomb core (91) and described urceolus (92) week upwards can soldering scope, week upwards not by the ratio of the scope of soldering less than 30%.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013017628A JP6093197B2 (en) | 2013-01-31 | 2013-01-31 | Exhaust gas purification catalyst device for internal combustion engine |
| JP2013-017628 | 2013-01-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103967563A true CN103967563A (en) | 2014-08-06 |
| CN103967563B CN103967563B (en) | 2017-07-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410039131.0A Active CN103967563B (en) | 2013-01-31 | 2014-01-27 | Compact internal combustion engine waste gas purification catalytic unit |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6093197B2 (en) |
| CN (1) | CN103967563B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112566720A (en) * | 2018-08-10 | 2021-03-26 | 本田技研工业株式会社 | Catalytic device |
| CN112566719A (en) * | 2018-08-10 | 2021-03-26 | 本田技研工业株式会社 | Catalytic device |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112567118B (en) | 2018-08-10 | 2022-07-26 | 本田技研工业株式会社 | Catalytic device |
| JP7153039B2 (en) | 2020-03-11 | 2022-10-13 | 本田技研工業株式会社 | Exhaust gas purification system for internal combustion engine |
| JP7454136B2 (en) | 2020-12-23 | 2024-03-22 | スズキ株式会社 | Motorcycle exhaust system and its manufacturing method |
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| CN112566719B (en) * | 2018-08-10 | 2023-07-21 | 本田技研工业株式会社 | Catalytic device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6093197B2 (en) | 2017-03-08 |
| CN103967563B (en) | 2017-07-07 |
| JP2014147879A (en) | 2014-08-21 |
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