JPH01131815U - - Google Patents
Info
- Publication number
- JPH01131815U JPH01131815U JP2859288U JP2859288U JPH01131815U JP H01131815 U JPH01131815 U JP H01131815U JP 2859288 U JP2859288 U JP 2859288U JP 2859288 U JP2859288 U JP 2859288U JP H01131815 U JPH01131815 U JP H01131815U
- Authority
- JP
- Japan
- Prior art keywords
- combustion engine
- internal combustion
- catalyst
- treatment device
- exhaust
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003054 catalyst Substances 0.000 claims description 11
- 238000002485 combustion reaction Methods 0.000 claims 3
- 230000003197 catalytic effect Effects 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Description
第１図はこの考案に係る排気処理装置の補助触
媒を示す断面図、第２図はその―線に沿つた
断面図、第３図はこの排気処理装置における主触
媒入口温度等の変化を従来のものと比較して示し
た特性図、第４図は補助触媒の異なる実施例を示
す断面図、第５図はその―線に沿つた断面図
、第６図は補助触媒の更に異なる実施例を示す断
面図、第７図はその―線に沿つた断面図、第
８図は従来における排気処理装置全体の構成を示
す構成説明図、第９図はその補助触媒の断面図、
第１０図はその―線に沿つた断面図である。
３……主触媒、４……補助触媒、８……連通孔
。
Fig. 1 is a cross-sectional view showing the auxiliary catalyst of the exhaust treatment device according to this invention, Fig. 2 is a cross-sectional view taken along the - line, and Fig. 3 shows the changes in the main catalyst inlet temperature, etc. in this exhaust treatment device. Fig. 4 is a cross-sectional view showing different embodiments of the auxiliary catalyst, Fig. 5 is a sectional view taken along the - line, and Fig. 6 is a further different embodiment of the auxiliary catalyst. 7 is a sectional view taken along the line, FIG. 8 is a configuration explanatory diagram showing the overall configuration of a conventional exhaust treatment device, and FIG. 9 is a sectional view of its auxiliary catalyst.
FIG. 10 is a sectional view taken along the - line. 3...Main catalyst, 4...Auxiliary catalyst, 8...Communication hole.
Claims (1)
媒を配設するとともに、この主触媒の上流側に、
主に触媒作用により排気温度を上昇させるための
比較的容量の小さな補助触媒を配設してなる内燃
機関の排気処理装置において、上記補助触媒は、
メツシユ状の多数の微細な通路を有し、かつその
一部に通路断面積の比較的大きな連通孔が貫通形
成されていることを特徴とする内燃機関の排気処
理装置。 A relatively large-capacity main catalyst is arranged in the exhaust passage of an internal combustion engine, and on the upstream side of this main catalyst,
In an exhaust treatment device for an internal combustion engine, which is provided with an auxiliary catalyst of relatively small capacity for raising the exhaust gas temperature mainly through catalytic action, the auxiliary catalyst has the following characteristics:
An exhaust gas treatment device for an internal combustion engine, characterized in that it has a large number of mesh-like fine passages, and a communication hole having a relatively large passage cross-sectional area is formed through a part of the passages.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2859288U JPH01131815U (en) | 1988-03-03 | 1988-03-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2859288U JPH01131815U (en) | 1988-03-03 | 1988-03-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01131815U true JPH01131815U (en) | 1989-09-07 |
Family
ID=31252088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2859288U Pending JPH01131815U (en) | 1988-03-03 | 1988-03-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01131815U (en) |
-
1988
- 1988-03-03 JP JP2859288U patent/JPH01131815U/ja active Pending