JPH0454925U - - Google Patents
Info
- Publication number
- JPH0454925U JPH0454925U JP9658990U JP9658990U JPH0454925U JP H0454925 U JPH0454925 U JP H0454925U JP 9658990 U JP9658990 U JP 9658990U JP 9658990 U JP9658990 U JP 9658990U JP H0454925 U JPH0454925 U JP H0454925U
- Authority
- JP
- Japan
- Prior art keywords
- engine exhaust
- trap filter
- engine
- throttle valve
- purification device
- 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
- 230000008929 regeneration Effects 0.000 claims description 3
- 238000011069 regeneration method Methods 0.000 claims description 3
- 238000000746 purification Methods 0.000 claims 2
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Description
第１図はこの考案の実施例を示す構成図、第２
図はコントロールユニツト内の制御動作を示すフ
ローチヤート、第３図はエンジン回転数とフイル
タ前後の差圧をもとにして再生開始条件と再生終
了条件として設定した基準値をあらわす特性図、
第４図はコントロールユニツトのブロツク図であ
る。
２……エンジン排気通路、３……トラツプフイル
タ、４……差圧センサ、５……温度センサ、６…
…回転センサ、８……吸気絞り弁、９……エンジ
ン吸気通路、１０……コントロールユニツト。
Figure 1 is a configuration diagram showing an embodiment of this invention, Figure 2
The figure is a flowchart showing the control operation within the control unit, and Figure 3 is a characteristic diagram showing the reference values set as regeneration start conditions and regeneration end conditions based on the engine speed and the differential pressure before and after the filter.
FIG. 4 is a block diagram of the control unit. 2... Engine exhaust passage, 3... Trap filter, 4... Differential pressure sensor, 5... Temperature sensor, 6...
...Rotation sensor, 8...Intake throttle valve, 9...Engine intake passage, 10...Control unit.
Claims (1)
ツプフイルタを設け、その捕集パーテイキユレイ
トを燃焼処理するようにしたデイーゼルエンジン
の排気浄化装置において、エンジン吸気通路に吸
気絞り弁を設けると共に、エンジン排気温度を検
出する検出手段と、トラツプフイルタの目詰まり
状態を検出する手段と、これらの検出信号に基づ
いてトラツプフイルタの再生が必要と判断したと
きにエンジン排気温度が所定値以下であることを
条件に吸気絞り弁を作動させる制御手段を設けた
ことを特徴とするデイーゼルエンジンの排気浄化
装置。 In a diesel engine exhaust purification device in which a particulate trap filter is provided in the engine exhaust passage and the collected particulate is combusted, an intake throttle valve is provided in the engine intake passage and the engine exhaust temperature is detected. a detecting means, a means for detecting a clogged state of the trap filter, and an intake throttle valve actuated on condition that the engine exhaust temperature is below a predetermined value when it is determined based on these detection signals that regeneration of the trap filter is necessary. An exhaust purification device for a diesel engine, characterized in that it is provided with a control means for controlling the
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9658990U JPH0454925U (en) | 1990-09-14 | 1990-09-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9658990U JPH0454925U (en) | 1990-09-14 | 1990-09-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0454925U true JPH0454925U (en) | 1992-05-12 |
Family
ID=31836256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9658990U Pending JPH0454925U (en) | 1990-09-14 | 1990-09-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0454925U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005282534A (en) * | 2004-03-30 | 2005-10-13 | Isuzu Motors Ltd | Exhaust gas aftertreatment device for diesel engine |
-
1990
- 1990-09-14 JP JP9658990U patent/JPH0454925U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005282534A (en) * | 2004-03-30 | 2005-10-13 | Isuzu Motors Ltd | Exhaust gas aftertreatment device for diesel engine |
| JP4701622B2 (en) * | 2004-03-30 | 2011-06-15 | いすゞ自動車株式会社 | Diesel engine exhaust gas aftertreatment device |
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