CN1188843A - Exhauster with catalytic agent - Google Patents
Exhauster with catalytic agent Download PDFInfo
- Publication number
- CN1188843A CN1188843A CN98104008A CN98104008A CN1188843A CN 1188843 A CN1188843 A CN 1188843A CN 98104008 A CN98104008 A CN 98104008A CN 98104008 A CN98104008 A CN 98104008A CN 1188843 A CN1188843 A CN 1188843A
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- Prior art keywords
- catalyzer
- outlet pipe
- tube
- exhaust
- silencing apparatus
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- Exhaust Gas After Treatment (AREA)
- Exhaust Silencers (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The invention provides a catalyst with good purifying efficiency without affecting the output of an engine. A muffler 2 is sectioned into a first expansion chamber 6, a second expansion chamber 7 and a third expansion chamber 8, and a first diffuser pipe 10 and a second diffuser pipe 11 are provided through these three chambers. A punching metalmade catalyst cylinder 13 is provided in the second diffuser pipe 11, and the rear end is made to project from the second diffuser pipe 11. Catalysts 34 are shouldered on the inner and outer peripheral surfaces of the second diffuser pipe 11 and the catalyst cylinder 13 and the outer peripheral surface of the first diffuser pipe 10.
Description
The present invention relates in silencing apparatus, applying the venting gas appliance of catalyzer.
Open in flat 6-10658 number the Japanese patent gazette spy, pointed out a kind of venting gas appliance.In this venting gas appliance, silencing apparatus is connected with the outlet pipe that stretches out from motor, is setting in this silencing apparatus that an end is connected with outlet pipe and to the expansion tube of blast air outgoing direction hole enlargement, folder is being established catalyst-assembly between the joint of outlet pipe and expansion tube.
Open in flat 4-27108 number in that the Japanese Utility Model communique is real, disclosed a kind of venting gas appliance, in this venting gas appliance, expansion tube is provided in the silencing apparatus, is being connected in series in the rearward end of this expansion tube and is accommodating the pipe of catalyzer.
Open in clear 54-118912 number the Japanese patent gazette spy, disclosed a kind of venting gas appliance, in this venting gas appliance, insert in the outlet pipe in the silencing apparatus, at the upstream side of outlet pipe, the Cylinder shape constructional element that is being connected in series and is forming by cloth shape catalyzer.
Open in flat 2-87922 number real, disclosed a kind of venting gas appliance, in this venting gas appliance, rearward end at the outlet pipe that stretches out from motor, connecting expansion tube, the rearward end of this expansion tube reaches in the silencing apparatus, will be divided in the silencing apparatus by the Room 3 that are interconnected connecting tube, makes the whole surface-coated catalyzer in each inner peripheral surface, connecting tube, tail pipe and the next door of these outlet pipes, expansion tube, silencing apparatus outside plate.
As the spy open flat 6-10658 number, reality is opened flat 4-27108 number and the spy opens in clear 5 4-118912 numbers, be separated catalyst device and expansion tube arranged in series, because the longer dimension altogether of these silencing apparatus interpolation members, so silencing apparatus also will extend, and, this catalyst-assembly constitutes cellular usually, and its weight is also big, so be unfavorable for the miniaturization of venting gas appliance.
In addition, in the small-sized vehicle silencing apparatus of scooter etc., the length of silencing apparatus is restricted, and when setting catalyst-assembly, is not easy to guarantee to reach regulation and purifies the required surface area of target, and its design is difficulty quite.
By vent systems arranged in series such as catalyst-assembly and outlet pipe, expansion tubes, though can improve purification efficiency, be easy to generate influence to the exhaust pulsation, so, for the output that does not cause motor reduces, more difficult in design.
Constitute when cellular at catalyst-assembly, because weight is big, so the assembly department of expansion tube also maximizes cantilever support catalyst-assembly difficulty more especially.And, owing to be easy to generate influence to exhaust pulsation, so, the design of the difficulty that has caused not causing that engine output reduces.
In addition, opening in clear 54-118912 number the spy, is to adopt the porous catalyst tube, and in this embodiment, owing to be the exhaust after expanding to be focused in the catalyzer tube purify, so purification efficiency is low, its result causes the catalyzer tube to maximize and raises the cost.
Open in flat 2-87922 number real, catalyst-assembly is not set separately, but make the direct coated catalysts such as inner peripheral surface of outlet pipe, expansion tube, like this, silencing apparatus length and exhaust pulsation are not had influence, can purifying exhaust gas.
But in should example, the exhaust of coming out from expansion tube reduces delivery temperature gradually, because contact with the catalyzer that is coated on downstream side connecting tube etc., so, along with past dirty side flow, its purification efficiency has the tendency of reduction, its result, in order to reach the purification target of regulation, must be at the large size coated catalysts, so, improved cost.
The present invention makes in view of the above problems, its purpose is to provide a kind of venting gas appliance with catalyzer, and venting gas appliance of the present invention has the outlet pipe, the silencing apparatus that is connected with this outlet pipe that stretch out from motor, be provided in this silencing apparatus and outlet pipe interpolation portion that an end is connected with outlet pipe, be coated in the catalyzer in the silencing apparatus; It is characterized in that, above-mentioned outlet pipe interpolation portion is made towards the expansion tube of blast air outgoing direction enlarged; Forming catalyzer tube cylindraceous, the surface-coated catalyzer by porous material slightly inserts with one heart and is bearing in the above-mentioned expansion tube.
The exhaust outflow side end of above-mentioned catalyzer tube is stretched towards the blast air outgoing direction, and longer than the exhaust outflow side end of expansion tube.
Above-mentioned catalyzer tube can be by supporting members supports in the expansion tube inboard, and forms the circulation flow path of exhaust between catalyzer tube and expansion tube.
Applying catalyzer on the periphery two sides at least a portion of above-mentioned expansion tube.
In addition, the venting gas appliance of band catalyzer of the present invention has the outlet pipe, the silencing apparatus that is connected with this outlet pipe that stretch out from motor, is provided in this silencing apparatus and outlet pipe interpolation portion that an end is communicated with outlet pipe, is coated in the catalyzer in the silencing apparatus; Make after the outlet pipe interpolation portion inflated around of exhaust in the expansion chamber that is located at silencing apparatus inside of this outlet pipe interpolation portion outflow to be discharged to outside the silencing apparatus, use the catalyzer purifying exhaust gas simultaneously; Make the interior periphery coated on both sides catalyzer of at least a portion of outlet pipe interpolation portion.
In this case, the scope of the interior periphery coated on both sides catalyzer of outlet pipe interpolation portion, the exhaust that can comprise in the outlet pipe interpolation portion flows near part of side end and near the part of exhaust outflow side end.
The present invention has following effect.
Because the porous catalyst tube is inserted in the expansion tube inboard that is equipped in the silencing apparatus with one heart, so, compare with the prior art of independent arranged in series catalyst-assembly, effect length to silencing apparatus is little, and only make simple tubular, in light weight and supporting easily can realize the compactness of venting gas appliance.
At this moment, because the catalyzer tube is the expansion front exhaust that purifies in the expansion tube, so, the purification efficiency height, and the catalyzer tube can make the length slightly identical with expansion tube, like this, guarantees to be to realize that regulation purifies the required surface area of target easily.
In addition, because expansion tube is divergent contour, so the mobile exhaust of portion within it reduces interior pressure gradually toward rearward end, the exhausts in the catalyzer tube 13 are flowed out to the outside by the aperture that forms on the peripheral part easily, thereby improve purification efficiency.
Even resemble the situation of length limited system the small-sized vehicle silencing apparatuss such as scooter, also can easily set catalyzer with enough surface areas, its design is also simple.
Stretch towards the outflow direction of exhaust if make the exhaust of catalyzer tube flow out side end, and longer than the exhaust outflow side end of expansion tube.Then utilized out the dilatant flow of the exhaust of expansion tube, can easily the exhaust in the catalyzer tube have been flowed out to the outside from this extension, so further improve purification efficiency.
If between catalyzer tube and expansion tube, guarantee the circulation flow path of exhaust, then be not easy the exhaust pulsation is exerted an influence, and can not cause the output power of motor to reduce, design is easily.
If make the interior periphery coated on both sides catalyzer of at least a portion of expansion tube, then contact earlier with the catalyzer of inner peripheral surface side and produce chemical reaction by the exhaust in the expansion tube, the catalyzer of outer circumferential face side is also heated by the reaction heat of this moment.
If the exhaust of coming out afterwards to expand from expansion tube contacts with the catalyzer of outer circumferential face side, then promote chemical reaction with outer circumferential face side catalyzer (catalyzer of this outer circumferential face side is by the heating of the reaction heat of the catalyzer of inner peripheral surface side), its result, exhaust delivery temperature after although come out from expansion tube reduces gradually, and purification efficiency still improves.
In addition, if make the interior periphery coated on both sides catalyzer of at least a portion that is provided in the outlet pipe interpolation portion that silencing apparatus is interior and an end is communicated with silencing apparatus outlet pipe outward, then with above-mentioned same reason, contact with the catalyzer of inner peripheral surface side by the exhaust in the outlet pipe interpolation portion with higher temperature, owing to utilize its reaction heat to improve the catalyst temperature of outer circumferential face side, so the exhaust of the expansion that can will flow out from outlet pipe interpolation portion with the outer circumferential face side of outlet pipe interpolation portion effectively purifies.
Therefore, can be in more among a small circle coated catalysts, correspondingly reduce cost.
During this situation, if the exhaust that the scope of coated catalysts comprises in the outlet pipe interpolation portion flows near part of side end and near the part of exhaust outflow side end, at first, near exhaust flows into side end, the exhaust that becomes the highest temperature in the outlet pipe interpolation portion contacts with the catalyzer of inner peripheral surface side, purified effectively, this part is heated by brute force simultaneously.
Then, near part side end is flowed out in exhaust, the reaction heat of part keeps the exhaust of higher temperatures to contact with the catalyzer of inner peripheral surface side near the side end because of exhaust flows into, and is purified effectively, and this part is also heated by reaction heat simultaneously.
Therefore, flow into the exhaust that side end comes out and expands with higher temperatures from exhaust, outer circumferential face side in outlet pipe interpolation portion, (catalyzer of this outer circumferential face side is located at the outer circumferential face that near the part of side end is flowed out in exhaust to the catalyzer of elder generation and outer circumferential face side, be heated from the inboard) contact and be cleaned effectively, heated again by this reaction heat simultaneously, contact with near the catalyzer of the part outer circumferential face side exhaust inflow side end.
At this moment, as previously mentioned, the outer circumferential face side catalyzer of this part is owing to be heated to suitable high temperature from the inboard, so, keeping the exhaust of higher temperature also to be purified effectively here.
Therefore, can make the exhaust after coming out from outlet pipe interpolation portion keep the high temperature of long period, and purify effectively with the wider range of outlet pipe interpolation portion outer circumferential face.
Fig. 1 is the length direction complete sectional view of silencing apparatus part.
Fig. 2 adopts the complete sectional view of the venting gas appliance of this silencing apparatus.
Fig. 3 is a 3-3 cutaway view Amplified image among Fig. 1.
Fig. 4 is a 4-4 cutaway view Amplified image among Fig. 1.
Fig. 5 is a catalyzer tube biopsy cavity marker devices External view.
Fig. 6 is a 6-6 cutaway view Amplified image among Fig. 5.
Below, with reference to the description of drawings embodiments of the invention.Fig. 1 is the length direction complete sectional view of silencing apparatus part.Fig. 2 adopts the complete sectional view of the venting gas appliance of silencing apparatus.Fig. 3 is the 3-3 cutaway view Amplified image of Fig. 1.Fig. 4 is the 4-4 cutaway view Amplified image of Fig. 1.Fig. 5 is a catalyzer tube biopsy cavity marker devices External view.Fig. 6 is the 6-6 cutaway view Amplified image of Fig. 5.
Among Fig. 2, the upstream side end of outlet pipe 1 is connected with not shown exhaust opening of engine, and its downstream side end is connected with the upstream side of silencing apparatus 2.Label 3 is struts that usefulness is installed on vehicle body.
In the following description, the downstream side end of outlet pipe 1 is called rearward end, the part of connected silencing apparatus 2 is called the front portion, the opposition side of length direction is called the rear portion.Among each length direction end of the described later the 1st and the 2nd expansion tube and catalyzer tube, the upstream side of portion's exhaust of flowing within it respectively is called front end, will be called rearward end with its opposition side.
As shown in Figure 1, the inside of silencing apparatus 2 is separated into the 1st expansion chamber the 6, the 2nd expansion chamber the 7, the 3rd expansion chamber 8 from front to back by next door 4,5.
Expansion tube along fore-and-aft direction be provided in silencing apparatus 2 inside, be diffusion type ground and connect the 1st expansion chamber 6 to the 3rd expansion chambers 8.
This expansion tube is equivalent to the outlet pipe interpolation portion among the present invention, is made of the 1st continuous expansion tube 10 and the 2nd expansion tube 11.
The front end of the 1st expansion tube 10 connects protecgulum 12, and the rearward end with outlet pipe 1 is connected herein, and the end is connected with the front end of the 2nd expansion tube 11 in the 2nd expansion chamber 7 thereafter.
Each rearward end that is setting catalyzer tube 13, the 2 expansion tubes 11 and catalyzer tube 13 in the 2nd expansion tube 11 is opened near bonnet 14 in the 2nd expansion chamber 8 slightly concentric shape.
The 3rd expansion chamber 8 is communicated with by connecting tube 15 with the 1st expansion chamber 6, and the 1st expansion chamber 6 is communicated with (see figure 3) with the 2nd expansion chamber 7 by connecting tube 16.
The 2nd expansion chamber 7 connects the tail pipe 17 that bonnet 14 stretches out to the outside by rearward end and is communicated with atmosphere, this tail pipe 17 towards the end of the 2nd expansion chamber 7 inner openings as outside exhaust port 18.
Periphery at the 2nd expansion tube 11 also is installed with baffler 23, and side is clamping sound absorbing material 24 within it, forms a lot of apertures 25 on the wall of the 2nd expansion tube 11 of this part.
Each inboard of protecgulum 12 and bonnet 14 also is provided with the inner panel 26,27 of punch metal system, between protecgulum 12 and the inner panel 26 and between end cap 14 and inner panel 27, is keeping sound absorber 28,29 respectively.
From the exhaust of outlet pipe 1, enter in the 2nd expansion tube 11 from the 1st expansion tube 10, each rearward end from the 2nd expansion tube 11 and catalyzer tube 13 enters expansion in the 3rd expansion chamber 8 again.
Then, expand, after in the 2nd expansion chamber 7, expanding once more by connecting tube 16 again, be discharged to the atmosphere by tail pipe 17 from outside exhaust port 18 by entering connecting tube 15 in the 1st expansion chamber 6.
To shown in Figure 6, strut 30 is fixed on the front end periphery of catalyzer tube 13 by plug welding portion 31 as Fig. 4, by the front end inner peripheral surface butt of the abutting part 32 that on its part, forms and the 2nd expansion tube 11 by cantilever supporting.
Formation has enough big gap between catalyzer tube 13 and the 2nd expansion tube 11, and this gap is applying catalyzer 34 as circulation flow path 33 on each inner and outer circumferential surfaces of the 2nd expansion tube 11 and catalyzer tube 13.
Strut 30 has fixing part 36, kink 37 and abutting part 32, and fixing part 36 is installed on the catalyzer tube 13 by plug welding portion 31 along the front end periphery of catalyzer tube 13.
Abutting part 32 is the part of the anterior inner peripheral surface of front end edge the 2nd expansion tube 11 of kink 37 bending, forms and the same taper that tilts of the inner peripheral surface of the 2nd expansion tube 11.
Therefore, in the rearward end side is inserted the 2nd expansion tube 11 time, the front end inner peripheral surface of abutting part 32 and the 2nd expansion tube 11 connects airtight catalyzer tube 13.
At this moment, because fixing part 36 and abutting part 32 are keeping being of a size of the interval of d by kink 37, so form the gap that is of a size of more than the d between the inner peripheral surface of catalyzer tube 13 and the 2nd expansion tube 11, this gap portion is as above-mentioned circulation flow path 33 (Fig. 4).
In addition, abutting part 32 by plug welding by the anterior inner peripheral surface cantilever of the 2nd expansion tube 11 supporting (figure does not show).
By with this part plug welding, after having welded abutting part 32, baffler 23 is embedded on the outer circumferential face of the 2nd expansion tube 11 from the minor diameter part side and welding.
The rearward end of catalyzer tube 13 is stretched out dimension D (Fig. 1) from the rearward end of the 2nd expansion tube 11 to downstream side.
Also applying same catalyzer 34 at the inner and outer circumferential surfaces of the 2nd expansion tube 11, the inner peripheral surface of the 1st expansion tube 10 in the 1st expansion chamber 6 and the outer circumferential face in the 1st expansion chamber 6.
Part in the perforation next door 4 of the outer circumferential face of the 1st expansion tube 10 is by covering and make its not coated catalysts with covering band in advance, to guarantee the weldability with next door 4.
Below, the effect of present embodiment is described.Among Fig. 1, enter exhaust in the 1st expansion tube 10 from outlet pipe 1, contact with the catalyzer 34 that is coated on inner face at the maximum temperature state, purified effectively, simultaneously, the 1st expansion tube 10 is heated from the inboard by the reaction heat with high-temperature exhaust air.
Then, the exhaust that has entered in the 2nd expansion tube 11 is divided into two strands, and one enters the circulation flow path 33 that is formed between the 2nd expansion tube 11 and the catalyzer tube 13, and another strand enters in the catalyzer tube 13.
Circulate exhaust in the road 33 is heated in the 1st expansion tube 10, contacts with the inner peripheral surface of the 2nd expansion tube 11 and the catalyzer 34 of catalyzer tube 13 outer circumferential faces at the state that keeps higher temperatures, is purified by accelerating oxidation.
The exhaust that enters catalyzer tube 13 is purified by the catalyzer 34 of catalyzer tube 13 inner peripheral surfaces, and its part arrives the outside from the aperture 35 of catalyzer 13 gradually simultaneously, at this moment contact promotion chemical reaction and being cleaned with catalyzer 34.
At this moment, because the 2nd expansion tube 11 is divergent contours, the mobile exhaust of portion within it reduces interior pressure gradually toward rearward end, and the exhausts in the catalyzer tube 13 are flowed out to the outside easily by aperture, so the raising purification efficiency.
In addition, since catalyzer tube 13 from the 2nd expansion tube 11 to the dirty dimension D of stretching out, so, by the exhaust in the catalyzer tube 13 at this extension, utilization is come out and the dilatant flow of the exhaust of expanding from the rearward end of the 2nd expansion tube 11, be sucked into the outside from aperture 35 easily, so improve purification efficiency.
On the surface of the inner peripheral surface and the catalyzer tube 13 of the 2nd expansion tube 11, by the chemical reaction heat of following coated catalyzer 34 and be heated as high temperature, and the exhaust by the 2nd expansion tube 11 and catalyzer tube 13 also is heated.
Therefore, the exhaust of having passed through the 2nd expansion tube 11 and catalyzer tube 13 is expanded in the 3rd expansion chamber 8, Yi Bian Yi Bian the delivery temperature that descends gradually is mobile to the 1st expansion chamber 6 directions, at this moment, contact with the outer surface of the 2nd expansion tube 11, the catalyzer 34 that is applied to here further purifies.
At this moment, exhaust and the 2nd expansion tube 11 and catalyzer tube 13 are heated respectively, so can improve purification efficiency.
Like this, the exhaust that has been cleaned in the 3rd expansion chamber 8 when entering the 1st expansion chamber 6, here contacts with the catalyzer 34 that is coated in the 1st expansion tube 10 outer surfaces.
At this moment, the 1st expansion tube 10 is heated from the inboard and becomes enough conditions of high temperature, and the exhaust that enters from the 3rd expansion chamber 8 is also by the heating of the reaction heat of the 2nd expansion tube 11 and catalyzer tube 13, although after coming out from the 2nd expansion tube 11 through the long period, but still keep higher temperature.
Like this, exhaust also contacts with the catalyzer 34 that is coated in the 1st expansion tube 10 outer surfaces near near the 1st expansion chamber 6 the outside exhaust port 18, effectively and is fully purified the back to discharge outside.
Therefore, exhaust from outlet pipe 1 inflow, in silencing apparatus 2, purified expeditiously, so, beyond catalyzer tube 13, directly the scope of coated catalysts 34 only needs the 1st expansion tube 10 and the 2nd expansion tube 11 promptly enough, compares with the situation that makes coated catalysts such as next door 4,5, connecting tube 15,16 and tail pipe 17, the surface area of catalyzer can be significantly reduced, cost can be correspondingly reduced.
And, because catalyzer tube 13 is porous catalyst tubes that concentric shape ground inserts the 2nd expansion tube 11 inboards, compare with the prior art of arranged in series catalyzer tube 13, effect length to silencing apparatus reduces, and it is in light weight, but be bearing on the expansion tube 11 cantilever, so, realize the compactness of whole venting gas appliance easily.
At this moment, because catalyzer tube 13 has purified the exhaust before the expansion that is positioned at the 1st expansion tube 11, so purification efficiency is high and can make and the slightly identical length of the 1st expansion tube 11, so, guarantee to be to realize the required surface area of regulation purification target easily.
In addition, even resemble the situation of length limited system the small-sized vehicle silencing apparatuss such as scooter, also can easily set the catalyzer with enough surface areas, its design is also simple.
Moreover, owing to be not with catalyst-assembly and independent outlet pipe 1 or expansion tube 10,11 arranged in series, and between catalyzer tube 13 and the 2nd expansion tube 11, can guarantee the circulation flow path 33 of exhaust, be not easy the exhaust pulsation is exerted an influence, so, can not cause the output power of motor to reduce, can improve purification efficiency, and design be also easy.
The present invention can make various changes, for example, also can be configured in the different concentric shape of several catalyzer tubes ground insertion of diameter in the 2nd expansion tube 11.
Also can omit or partly limit the catalyzer 34 that is coated in expansion tube 10,11 inner and outer circumferential surfaces.
Conversely,, then also can omit catalyzer tube 13, become structure by the direct coated catalysts 34 of expansion tube 10,11 inner and outer circumferential surfaces if can guarantee enough surface areas.
In this case, also can be at least near each of inlet side that comprises expansion tube 10,11 and outlet side coated catalysts in the part scope.
In addition, also can replace expansion tube 10,11 with the part of prolongation in the past silencing apparatus 2 of outlet pipe 1.
Claims (6)
1. venting gas appliance with catalyzer has the outlet pipe, the silencing apparatus that is connected with this outlet pipe that stretch out from motor, is provided in this silencing apparatus and outlet pipe interpolation portion that an end is connected with outlet pipe and be coated in catalyzer in the silencing apparatus; It is characterized in that,
Above-mentioned outlet pipe interpolation portion is the expansion tube towards blast air outgoing direction enlarged;
Forming cylindric and surface-coated by porous material has the catalyzer tube of catalyzer slightly to insert with one heart and be supported in the above-mentioned expansion tube.
2. the venting gas appliance of band catalyzer as claimed in claim 1 is characterized in that, the exhaust of above-mentioned catalyzer tube is flowed out side end and stretched out towards the blast air outgoing direction, and stretches out and must grow than the exhaust outflow side end of expansion tube.
3. the venting gas appliance of band catalyzer as claimed in claim 1 or 2 is characterized in that, above-mentioned catalyzer tube in the expansion tube inboard, and forms the circulation flow path of exhaust by supporting members supports between catalyzer tube and expansion tube.
4. as the venting gas appliance of each described band catalyzer in the claim 1 to 3, it is characterized in that, applying catalyzer on the interior periphery two sides of at least a portion of above-mentioned expansion tube.
5. venting gas appliance with catalyzer has the outlet pipe, the silencing apparatus that is connected with this outlet pipe that stretch out from motor, is provided in this silencing apparatus and outlet pipe interpolation portion that an end is communicated with outlet pipe and be coated in catalyzer in the silencing apparatus; Make after the outlet pipe interpolation portion inflated around of exhaust in the expansion chamber that is located at silencing apparatus inside of this outlet pipe interpolation portion outflow to be discharged to outside the silencing apparatus, use the catalyzer purifying exhaust gas simultaneously; It is characterized in that, make the interior periphery coated on both sides catalyzer of at least a portion of outlet pipe interpolation portion.
6. the venting gas appliance of band catalyzer as claimed in claim 5 is characterized in that, the scope of the interior periphery coated on both sides catalyzer of outlet pipe interpolation portion, and the exhaust that comprises in the outlet pipe interpolation portion flows near part of side end and near the part of exhaust outflow side end.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP00977897A JP3886194B2 (en) | 1997-01-22 | 1997-01-22 | Exhaust device with catalyst |
| JP009778/97 | 1997-01-22 | ||
| JP009778/1997 | 1997-01-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1188843A true CN1188843A (en) | 1998-07-29 |
| CN1100199C CN1100199C (en) | 2003-01-29 |
Family
ID=11729709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98104008A Expired - Fee Related CN1100199C (en) | 1997-01-22 | 1998-01-21 | Exhauster with catalytic agent |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP3886194B2 (en) |
| CN (1) | CN1100199C (en) |
| IT (1) | ITTO980029A1 (en) |
| TW (1) | TW501665U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100451305C (en) * | 2004-08-13 | 2009-01-14 | 雅马哈发动机株式会社 | Exhaust pipe of locomotive |
| CN101680346A (en) * | 2007-05-21 | 2010-03-24 | 丰田自动车株式会社 | Exhaust pipe for vehicle-mounted engine |
| CN110821720A (en) * | 2019-11-28 | 2020-02-21 | 栾金榜 | Oil-saving emission reduction device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0556846A1 (en) * | 1992-02-19 | 1993-08-25 | LEISTRITZ AG & CO. Abgastechnik | Exhaust silencer for diesel engines, particularly for commercial vehicles |
-
1997
- 1997-01-22 JP JP00977897A patent/JP3886194B2/en not_active Expired - Fee Related
- 1997-12-26 TW TW89208100U patent/TW501665U/en not_active IP Right Cessation
-
1998
- 1998-01-15 IT IT98TO000029A patent/ITTO980029A1/en unknown
- 1998-01-21 CN CN98104008A patent/CN1100199C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100451305C (en) * | 2004-08-13 | 2009-01-14 | 雅马哈发动机株式会社 | Exhaust pipe of locomotive |
| CN101680346A (en) * | 2007-05-21 | 2010-03-24 | 丰田自动车株式会社 | Exhaust pipe for vehicle-mounted engine |
| CN101680346B (en) * | 2007-05-21 | 2013-03-20 | 丰田自动车株式会社 | Exhaust pipe for vehicle-mounted engine |
| CN110821720A (en) * | 2019-11-28 | 2020-02-21 | 栾金榜 | Oil-saving emission reduction device |
Also Published As
| Publication number | Publication date |
|---|---|
| ITTO980029A1 (en) | 1999-07-15 |
| TW501665U (en) | 2002-09-01 |
| JPH10205324A (en) | 1998-08-04 |
| CN1100199C (en) | 2003-01-29 |
| JP3886194B2 (en) | 2007-02-28 |
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