JPH02105511U - - Google Patents
Info
- Publication number
- JPH02105511U JPH02105511U JP1358889U JP1358889U JPH02105511U JP H02105511 U JPH02105511 U JP H02105511U JP 1358889 U JP1358889 U JP 1358889U JP 1358889 U JP1358889 U JP 1358889U JP H02105511 U JPH02105511 U JP H02105511U
- Authority
- JP
- Japan
- Prior art keywords
- trap
- switching valve
- bypass passage
- switched
- upstream
- 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
- 238000011144 upstream manufacturing Methods 0.000 claims 4
- 238000000746 purification Methods 0.000 claims 3
- 230000008929 regeneration Effects 0.000 claims 2
- 238000011069 regeneration method Methods 0.000 claims 2
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 1
Description
第１図は本考案の一実施例を示す全体構成図、
第２図は制御マツプ図、第３図は効果を示す捕集
効率特性図である。
１…排気通路、２…ハニカムトラツプ、３…フ
アイバトラツプ、４…第１のバイパス通路、５…
第２のバイパス通路、６…第１の切換弁、７…第
２の切換弁、８…第１の圧力センサ、９…第２の
圧力センサ、１０…コントローラ。
FIG. 1 is an overall configuration diagram showing an embodiment of the present invention;
FIG. 2 is a control map diagram, and FIG. 3 is a collection efficiency characteristic diagram showing the effect. 1... Exhaust passage, 2... Honeycomb trap, 3... Fiber trap, 4... First bypass passage, 5...
2nd bypass passage, 6...first switching valve, 7...second switching valve, 8...first pressure sensor, 9...second pressure sensor, 10...controller.
Claims (1)
トを捕集するトラツプを設けたデイーゼル排気浄
化装置において、トラツプを直列に配設して上流
側のトラツプに対し下流側のトラツプに高捕集率
のトラツプを設け、これら上流側及び下流側のト
ラツプのそれぞれをバイパスするバイパス通路を
設け、それらバイパス通路の入口部にそれぞれ第
１及び第２の切換弁を設けると共に、上流側のト
ラツプの入口部及び出口部に設けた第１及び第２
の圧力検出手段からの信号に基づき、上流側のト
ラツプが浄化効率が低い初期状態にあると判断し
たときは第１及び第２の切換弁をそれぞれトラツ
プ側に切換え、初期状態が終つたと判断したとき
、第２の切換弁を第２のバイパス通路側に切換え
、再生時期に達したと判断したときに、第１の切
換弁を第１のバイパス通路側に切換えると共に第
２の切換弁を下流側のトラツプ側に切換えて再生
するように制御するコントローラを設けたことを
特徴とするデイーゼル排気浄化装置。 In a diesel exhaust purification system that is equipped with a trap for collecting particulates in the exhaust passage of a diesel engine, the traps are arranged in series, and a trap with a high collection rate is installed on the downstream side of the trap on the upstream side. A bypass passage is provided to bypass each of the upstream and downstream traps, and a first and second switching valve is provided at the inlet of the bypass passage, respectively, and a first and second switching valve is provided at the inlet and outlet of the upstream trap. The first and second
When it is determined that the trap on the upstream side is in an initial state with low purification efficiency based on the signal from the pressure detection means, the first and second switching valves are respectively switched to the trap side and it is determined that the initial state has ended. When this occurs, the second switching valve is switched to the second bypass passage side, and when it is determined that the regeneration time has been reached, the first switching valve is switched to the first bypass passage side and the second switching valve is switched to the second bypass passage side. A diesel exhaust purification device characterized by being provided with a controller that controls switching to a downstream trap side for regeneration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1358889U JPH02105511U (en) | 1989-02-09 | 1989-02-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1358889U JPH02105511U (en) | 1989-02-09 | 1989-02-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02105511U true JPH02105511U (en) | 1990-08-22 |
Family
ID=31224024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1358889U Pending JPH02105511U (en) | 1989-02-09 | 1989-02-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02105511U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001342820A (en) * | 2000-03-29 | 2001-12-14 | Toyota Motor Corp | Exhaust emission control device of internal combustion engine |
-
1989
- 1989-02-09 JP JP1358889U patent/JPH02105511U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001342820A (en) * | 2000-03-29 | 2001-12-14 | Toyota Motor Corp | Exhaust emission control device of internal combustion engine |
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