JPH01124022U - - Google Patents
Info
- Publication number
- JPH01124022U JPH01124022U JP1849088U JP1849088U JPH01124022U JP H01124022 U JPH01124022 U JP H01124022U JP 1849088 U JP1849088 U JP 1849088U JP 1849088 U JP1849088 U JP 1849088U JP H01124022 U JPH01124022 U JP H01124022U
- Authority
- JP
- Japan
- Prior art keywords
- trap filter
- burner
- passage
- trap
- catalyst
- 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 3
- 230000003197 catalytic effect Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 claims 1
- 238000000746 purification Methods 0.000 claims 1
- 230000008929 regeneration Effects 0.000 claims 1
- 238000011069 regeneration method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Description
第１図はこの考案の実施例を示す構成図、第２
図は同じく制御動作を説明するフローチヤート、
第３図は同じく切換弁の制御に使用する特性図で
ある。
１……触媒付トラツプフイルタ、２……バーナ
付トラツプフイルタ、３……切換弁、４……バー
ナ、６……圧力センサ、７……エンジン回転セン
サ、８……エンジン負荷センサ、９……制御回路
、２０……メイン通路、２１……バイパス通路。
Figure 1 is a configuration diagram showing an embodiment of this invention, Figure 2
The figure is also a flowchart explaining the control operation,
FIG. 3 is a characteristic diagram similarly used for controlling the switching valve. 1... Trap filter with catalyst, 2... Trap filter with burner, 3... Switching valve, 4... Burner, 6... Pressure sensor, 7... Engine rotation sensor, 8... Engine load sensor, 9... Control circuit , 20...main passage, 21...bypass passage.
Claims (1)
のバーナ付きトラツプフイルタを、またバーナ付
きトラツプフイルタを迂回するように形成したバ
イパス通路の途中に触媒付トラツプフイルタをそ
れぞれ介装し、これらトラツプフイルタの通路分
岐部に切換弁を設ける一方、バーナ付トラツプフ
イルタの目詰り状態を検出する手段と、エンジン
運転状態を検出する手段と、これらの検出信号に
もとづいてエンジン低負荷域で触媒付トラツプフ
イルタ側に、高負荷域で触媒付トラツプフイルタ
とバーナ付トラツプフイルタの両方に排気ガスを
導くように切換弁を切り換える通路切換制御手段
と、同じく高負荷域でバーナ付トラツプフイルタ
が目詰りをおこしたときにバーナを作動させると
共に触媒付トラツプフイルタ側に排気ガスを導く
ように切換弁を切り換える再生制御手段を設けた
ことを特徴とするデイーゼルエンジンの排気浄化
装置。 A trap filter with a particulate burner is installed in the middle of the engine exhaust passage, and a trap filter with a catalyst is installed in the middle of a bypass passage formed to bypass the trap filter with burner, and a switching valve is installed at the passage branch of these trap filters. At the same time, means for detecting the clogging state of the burner-equipped trap filter, means for detecting the engine operating state, and based on these detection signals, the catalyst-equipped trap filter side is installed in the low engine load range, and the catalytic trap filter is installed in the high engine load range. and a passage switching control means that switches a switching valve so as to direct exhaust gas to both the trap filter with burner and the trap filter with a burner, and a passage switching control means that operates the burner and exhausts the exhaust gas to the trap filter with catalyst when the trap filter with burner becomes clogged in a high load range. An exhaust purification device for a diesel engine, characterized in that it is provided with a regeneration control means that switches a switching valve so as to guide gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1849088U JPH01124022U (en) | 1988-02-15 | 1988-02-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1849088U JPH01124022U (en) | 1988-02-15 | 1988-02-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01124022U true JPH01124022U (en) | 1989-08-23 |
Family
ID=31233186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1849088U Pending JPH01124022U (en) | 1988-02-15 | 1988-02-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01124022U (en) |
-
1988
- 1988-02-15 JP JP1849088U patent/JPH01124022U/ja active Pending
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