JPH0254356U - - Google Patents
Info
- Publication number
- JPH0254356U JPH0254356U JP13420588U JP13420588U JPH0254356U JP H0254356 U JPH0254356 U JP H0254356U JP 13420588 U JP13420588 U JP 13420588U JP 13420588 U JP13420588 U JP 13420588U JP H0254356 U JPH0254356 U JP H0254356U
- Authority
- JP
- Japan
- Prior art keywords
- passage
- exhaust
- valve
- particulate trap
- trap filter
- 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
- 238000000746 purification Methods 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Exhaust-Gas Circulating Devices (AREA)
Description
第１図は本考案の実施例に係るＥＧＲ装置の排
気ガス浄化装置の構成図である。第２図は従来に
おけるＥＧＲ装置の構成図である。第３図は従来
におけるターボチヤージヤ付きのエンジンにＥＧ
Ｒ装置を装着した場合の構成図である。
〔主要な部分の符号の説明〕、１……ターボチ
ヤージヤ、１Ａ……タービン、１Ｂ……コンプレ
ツサー、２……排気通路、３……吸気通路、３Ａ
……下流部分、４……排気還流通路、４Ａ……上
流部分、５……パーテイキユレートトラツプフイ
ルタ、７……ＥＧＲバルブ、８……第１開閉弁、
９……分岐通路、１０……第２開閉弁。
FIG. 1 is a configuration diagram of an exhaust gas purification device for an EGR device according to an embodiment of the present invention. FIG. 2 is a configuration diagram of a conventional EGR device. Figure 3 shows EG in a conventional turbocharged engine.
FIG. 3 is a configuration diagram when the R device is installed. [Explanation of symbols of main parts], 1...Turbocharger, 1A...Turbine, 1B...Compressor, 2...Exhaust passage, 3...Intake passage, 3A
...Downstream part, 4...Exhaust recirculation passage, 4A...Upstream part, 5...Particulate trap filter, 7...EGR valve, 8...First on-off valve,
9... Branch passage, 10... Second on-off valve.
Claims (1)
タービンを設け、エンジンの吸気通路途中にター
ボチヤージヤのコンプレツサーを設け、吸気通路
のコンプレツサーの下流部分と排気通路とを排気
還流通路で接続し、排気還流通路途中にＥＧＲバ
ルブ及びパーテイキユレートトラツプフイルタを
設けてなるＥＧＲ装置の排気ガス浄化装置におい
て、ＥＧＲバルブを運転状態の減速時開状態に保
持し、排気還流通路のパーテイキユレートトラツ
プフイルタの上流部分に減速時閉じる第１開閉弁
を設け、排気還流通路のパーテイキユレートトラ
ツプフイルタと第１開閉弁との間の部分にパーテ
イキユレートトラツプフイルタの清浄時吸気ガス
の一部を大気または排気通路に解放する分岐通路
を接続し、この分岐通路に減速時開く第２開閉弁
を設けたことを特徴とするＥＧＲ装置の排気ガス
浄化装置。 A turbocharger turbine is installed in the middle of the engine's exhaust passage, a turbocharger compressor is installed in the middle of the engine's intake passage, the downstream part of the compressor in the intake passage and the exhaust passage are connected by an exhaust recirculation passage, and an EGR valve is installed in the middle of the exhaust recirculation passage. In an exhaust gas purification device for an EGR device that is equipped with a particulate trap filter, the EGR valve is held open during deceleration in the operating state, and the particulate trap filter is connected to the upstream portion of the exhaust recirculation passage during deceleration. A first on-off valve that closes is provided in the exhaust recirculation passage between the particulate trap filter and the first on-off valve, and a part of the intake gas is released to the atmosphere or the exhaust passage when the particulate trap filter is cleaned. An exhaust gas purification device for an EGR system, characterized in that a branch passage is connected to the branch passage, and a second on-off valve that opens during deceleration is provided in the branch passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13420588U JPH0254356U (en) | 1988-10-14 | 1988-10-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13420588U JPH0254356U (en) | 1988-10-14 | 1988-10-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0254356U true JPH0254356U (en) | 1990-04-19 |
Family
ID=31392751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13420588U Pending JPH0254356U (en) | 1988-10-14 | 1988-10-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0254356U (en) |
-
1988
- 1988-10-14 JP JP13420588U patent/JPH0254356U/ja active Pending