JPH03122220U - - Google Patents
Info
- Publication number
- JPH03122220U JPH03122220U JP3081990U JP3081990U JPH03122220U JP H03122220 U JPH03122220 U JP H03122220U JP 3081990 U JP3081990 U JP 3081990U JP 3081990 U JP3081990 U JP 3081990U JP H03122220 U JPH03122220 U JP H03122220U
- Authority
- JP
- Japan
- Prior art keywords
- low
- temperature
- activated catalyst
- bypass passage
- temperature activated
- 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 7
- 238000011144 upstream manufacturing Methods 0.000 claims 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims 2
- 238000000746 purification Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Exhaust Gas After Treatment (AREA)
Description
第１図は本考案の実施例を示す構成図、第２図
、第３図はそれぞれ制御動作を示すフローチヤー
ト、第４図は他の実施例の要部を示す断面図であ
る。
２……排気通路、３……低温活性触媒、４……
高温活性触媒、５……バイパス通路、６……切換
弁、７……コントローラ。
FIG. 1 is a block diagram showing an embodiment of the present invention, FIGS. 2 and 3 are flowcharts showing control operations, and FIG. 4 is a sectional view showing main parts of another embodiment. 2...Exhaust passage, 3...Low temperature active catalyst, 4...
High temperature active catalyst, 5... bypass passage, 6... switching valve, 7... controller.
Claims (1)
活性触媒、下流側に高温活性触媒をそれぞれ設け
、かつ低温活性触媒の上流から分岐して高温活性
触媒の上流に合流するバイパス通路を設け、少な
くとも排気温度の低い運転域でバイパス通路を閉
じ、それ以外では低温活性触媒の入口側を閉じる
と共にバイパス通路を開く切換弁を設けたことを
特徴とするアルコールエンジンの排気浄化装置。 A low-temperature activated catalyst is provided on the upstream side of the exhaust passage of an alcohol engine, and a high-temperature activated catalyst is provided on the downstream side, and a bypass passage is provided that branches from the upstream side of the low-temperature activated catalyst and joins upstream of the high-temperature activated catalyst, so as to maintain at least the exhaust temperature. An exhaust gas purification device for an alcohol engine, characterized in that a switching valve is provided that closes a bypass passage in a low operating range, and closes the inlet side of a low-temperature active catalyst and opens the bypass passage at other times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3081990U JPH03122220U (en) | 1990-03-26 | 1990-03-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3081990U JPH03122220U (en) | 1990-03-26 | 1990-03-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03122220U true JPH03122220U (en) | 1991-12-13 |
Family
ID=31533531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3081990U Pending JPH03122220U (en) | 1990-03-26 | 1990-03-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03122220U (en) |
-
1990
- 1990-03-26 JP JP3081990U patent/JPH03122220U/ja active Pending