CN219865202U - Exhaust gas purifying device - Google Patents
Exhaust gas purifying device Download PDFInfo
- Publication number
- CN219865202U CN219865202U CN202320625726.9U CN202320625726U CN219865202U CN 219865202 U CN219865202 U CN 219865202U CN 202320625726 U CN202320625726 U CN 202320625726U CN 219865202 U CN219865202 U CN 219865202U
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- CN
- China
- Prior art keywords
- exhaust gas
- catalyst device
- honeycomb
- catalyst
- passages
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- 239000003054 catalyst Substances 0.000 claims abstract description 84
- 238000002485 combustion reaction Methods 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims description 13
- 238000000746 purification Methods 0.000 abstract description 18
- 238000010438 heat treatment Methods 0.000 description 7
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model provides an exhaust gas purifying device capable of improving the purifying performance of exhaust gas. The exhaust gas purification device is provided in an exhaust passage of an internal combustion engine, and includes: a first catalyst device having a plurality of honeycomb-structured passages through which exhaust gas flows; a second catalyst device provided on a downstream side of the first catalyst device and having a plurality of honeycomb-structured passages through which exhaust gas flows; and a third catalyst device provided on the downstream side of the second catalyst device and having a plurality of honeycomb-structure passages through which exhaust gas flows, wherein the second catalyst device is an electrothermal catalyst device.
Description
Technical Field
The present utility model relates to an exhaust gas purifying apparatus.
Background
In recent years, studies on improvement of exhaust gas of automobiles have been conducted with a view to alleviating climate change and reducing influence. In the existing internal combustion engine, a catalyst device is provided to purify exhaust gas. However, in the case of using an electrothermal catalyst device, the purification performance becomes poor after the completion of the energization heating, and the exhaust gas is deteriorated. The present utility model aims to solve the above problems and to improve the purification performance. Moreover, the exhaust conditions of traffic are further improved to help mitigate climate change or influence.
Disclosure of Invention
The utility model provides an exhaust gas purifying device capable of improving the purifying performance of exhaust gas.
An exhaust gas purification device of the present utility model is provided in an exhaust passage of an internal combustion engine, and includes: a first catalyst device having a plurality of honeycomb-structured passages through which exhaust gas flows; a second catalyst device provided on a downstream side of the first catalyst device and having a plurality of honeycomb-structured passages through which exhaust gas flows; and a third catalyst device provided on the downstream side of the second catalyst device and having a plurality of honeycomb-structure passages through which exhaust gas flows, wherein the second catalyst device is an electrothermal catalyst device.
In an embodiment of the present utility model, the second catalyst device includes an electrothermal first metal honeycomb body, and a second metal honeycomb body provided on a downstream side of the first metal honeycomb body in the exhaust passage.
Based on the above, in the exhaust gas purification device of the present utility model, the electrothermal catalyst device is provided between the two catalyst devices. Therefore, the electrothermal catalyst device can improve the exhaust gas purification efficiency when heated by electric current, and can prevent deterioration of exhaust gas by purifying the catalyst device even after the heating is completed. Accordingly, the exhaust gas purifying apparatus of the present utility model can improve the purifying performance of exhaust gas.
In order to make the above features and advantages of the present utility model more comprehensible, embodiments accompanied with figures are described in detail below.
Drawings
Fig. 1 is a schematic view of an exhaust gas purifying apparatus according to an embodiment of the present utility model.
Fig. 2A is a partial schematic view of a honeycomb-structured passage of the exhaust gas purifying device of fig. 1.
Fig. 2B is another view of the honeycomb-structured passage of the exhaust gas purifying device of fig. 2A.
Fig. 3 is a schematic view of an exhaust gas purifying apparatus according to another embodiment of the present utility model.
Description of the reference numerals
10: an exhaust passage;
20: a power supply device;
30: a control device;
100. 100': an exhaust gas purifying device;
110: a first catalyst device;
120. 120': a second catalyst device;
122: a first metal honeycomb body;
124: a second metal honeycomb body;
130: a third catalyst device;
c: a catalyst body;
ca: a carrier substrate;
h: a honeycomb structure passageway;
g: and (5) exhausting gas.
Detailed Description
Fig. 1 is a schematic view of an exhaust gas purifying apparatus according to an embodiment of the present utility model. Fig. 2A is a partial schematic view of a honeycomb-structured passage of the exhaust gas purifying device of fig. 1. Fig. 2B is another view of the honeycomb-structured passage of the exhaust gas purifying device of fig. 2A. In the present embodiment, the exhaust gas purification apparatus 100 is provided in the exhaust passage 10 of the internal combustion engine (not shown) of the automobile to purify the exhaust gas (exhaust gas G), but the present utility model is not limited to use in the internal combustion engine passage of the automobile, but may be applied to other similar exhaust passage structures. It should be noted that wherever possible, the same reference numbers are used throughout the drawings and the description to refer to the same or like parts. The specific structure of the exhaust gas purification apparatus 100 of the present embodiment will be described below with reference to fig. 1 to 2B.
Referring to fig. 1 and 2A, in the present embodiment, the exhaust gas purification apparatus 100 includes a first catalyst apparatus 110, a second catalyst apparatus 120, and a third catalyst apparatus 130. The first catalyst device 110 has a plurality of honeycomb-structured passages H through which the exhaust gas G flows (see fig. 2A), and the first catalyst device 110 is disposed on the upstream side, i.e., the first device for gas cleaning, of the exhaust passage 10 than the second catalyst device 120 and the third catalyst device 130. The second catalyst device 120 is disposed on the downstream side of the first catalyst device 110, and has a plurality of honeycomb-structured passages H (fig. 2A) through which the exhaust gas G flows. The third catalyst device 130 is disposed on the downstream side of the second catalyst device 120, and has a plurality of honeycomb-structured passages H (see fig. 2A) through which the exhaust gas G flows. The second catalyst device 120 disposed between the first catalyst device 110 and the third catalyst device 130 is an electrothermal catalyst device.
Further, in the present embodiment, the second catalyst device 120 is electrically connected to the power supply device 20 and the control device 30. Thereby, the power supply device 20 and the control device 30 supply power to the second catalyst device 120 to heat and control the temperature. The exhaust gas G flows through the first catalyst device 110, the second catalyst device 120, and the third catalyst device 130 in this order in the exhaust passage 10, wherein the heated second catalyst device 120 can improve the purification efficiency to purify the exhaust gas G more efficiently. In addition, the honeycomb passages H in the first catalyst device 110, the second catalyst device 120 and the third catalyst device 130 may have the same shape (such as the quadrangular honeycomb shape shown in fig. 2A), but the honeycomb passages of the first catalyst device 110, the second catalyst device 120 and the third catalyst device 130 may be provided with honeycomb-like passages of different shapes according to the requirement, which is not limited in the present utility model.
As can be seen from this, in the exhaust gas purification device 100 of the present embodiment, the electrothermal catalyst device is provided between the two catalyst devices. Therefore, the electrothermal catalyst device can improve the exhaust gas purification efficiency when heated by electric current, and can prevent deterioration of exhaust gas by purifying the catalyst device even after the heating is completed. Accordingly, the exhaust gas purification apparatus 100 of the present embodiment can improve the purification performance of the exhaust gas.
Preferably, in the present embodiment, the first catalyst device 110 and the third catalyst device 130 may be made of ceramic. Since the ceramic material has a low heat dissipation, the problem of deterioration of exhaust gas due to a sudden drop in temperature after the end of heating can be suppressed on the upstream side or downstream side of the second catalyst device 120 as the electrothermal catalyst device. In other embodiments not shown, the upstream side or downstream side of the electrothermal catalyst device may be provided with other catalyst devices made of materials with smaller heat dissipation, and the utility model is not limited to ceramics.
Referring to fig. 2B, in the present embodiment, the honeycomb structure passage H of any one of the first catalyst device 110, the second catalyst device 120, and the third catalyst device 130 is, for example, a structure without a plugging portion. Further, the catalyst bodies C and the carrier base material Ca in the first, second and third catalyst devices 110, 120 and 130 enclose a honeycomb structure passage H, and the exhaust gas G flows through the honeycomb structure passage H. In addition, the catalyst bodies C and the carrier substrate Ca are disposed in a stacked manner, for example, wherein the carrier substrate Ca is disposed between the catalyst bodies C, but the utility model is not limited thereto. In other not shown embodiments, a passage structure provided with a blocking portion at one end may be used, which is not limited by the present utility model.
Fig. 3 is a schematic view of an exhaust gas purifying apparatus according to another embodiment of the present utility model. In the present embodiment, the exhaust gas purification apparatus 100 'differs from the exhaust gas purification apparatus 100 only in the second catalyst device 120'. The second catalyst device 120' includes a first metal honeycomb 122 having an electrothermal type, and a second metal honeycomb 124 disposed on a downstream side of the first metal honeycomb 122 in the exhaust passage 10. The power supply device 20 and the control device 30 are only electrically connected to the first metal honeycomb 122 to supply power to the first metal honeycomb 122 for heating and controlling the temperature. In this way, the part to be heated can be independent, and the heating efficiency can be improved.
As described above, in the exhaust gas purification device of the present utility model, the electrothermal catalyst device is provided between the two catalyst devices. Therefore, the electrothermal catalyst device can improve the purification efficiency of exhaust gas when heated by electric current. Further, by providing ceramic catalyst devices upstream and downstream of the electrothermal catalyst device, exhaust gas can be efficiently purified and prevented from being deteriorated even after heating is completed. Accordingly, the exhaust gas purifying apparatus of the present utility model can improve the purifying performance of exhaust gas.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (2)
1. An exhaust gas purifying apparatus provided in an exhaust passage of an internal combustion engine, comprising:
a first catalyst device having a plurality of honeycomb-structured passages through which exhaust gas flows;
a second catalyst device provided on a downstream side of the first catalyst device and having a plurality of honeycomb-structured passages through which exhaust gas flows; and
a third catalyst device provided on the downstream side of the second catalyst device and having a plurality of honeycomb-structured passages through which exhaust gas flows, wherein
The second catalyst device is an electrothermal catalyst device.
2. The exhaust gas purifying apparatus according to claim 1, wherein,
the second catalyst device includes an electrothermal first metal honeycomb body, and a second metal honeycomb body provided on a downstream side of the first metal honeycomb body in the exhaust passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320625726.9U CN219865202U (en) | 2023-03-27 | 2023-03-27 | Exhaust gas purifying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320625726.9U CN219865202U (en) | 2023-03-27 | 2023-03-27 | Exhaust gas purifying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219865202U true CN219865202U (en) | 2023-10-20 |
Family
ID=88337157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320625726.9U Active CN219865202U (en) | 2023-03-27 | 2023-03-27 | Exhaust gas purifying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219865202U (en) |
-
2023
- 2023-03-27 CN CN202320625726.9U patent/CN219865202U/en active Active
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