JPH0246058U - - Google Patents
Info
- Publication number
- JPH0246058U JPH0246058U JP12497788U JP12497788U JPH0246058U JP H0246058 U JPH0246058 U JP H0246058U JP 12497788 U JP12497788 U JP 12497788U JP 12497788 U JP12497788 U JP 12497788U JP H0246058 U JPH0246058 U JP H0246058U
- Authority
- JP
- Japan
- Prior art keywords
- passage
- exhaust
- gas recirculation
- exhaust gas
- 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
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Exhaust-Gas Circulating Devices (AREA)
Description
第１図は本考案の一実施例に係るＥＧＲ装置の
概略構成図、第２図は開閉弁の制御回路のフロー
チヤートである。
３……エンジン、５……吸気通路、７……排気
通路、９……ＥＧＲ弁、１１……排気還流通路、
１１ａ……第一排気還流通路、１１ｂ……第二排
気還流通路、１１ａ’，１１ｂ’……下流側排気
還流通路、１７……ＥＣＵ、１９，２１……トラ
ツプフイルタ、２３，２５……排気バイパス通路
、２７，２９……開閉弁、３１，３３……温度セ
ンサ。
FIG. 1 is a schematic configuration diagram of an EGR device according to an embodiment of the present invention, and FIG. 2 is a flowchart of a control circuit for an on-off valve. 3...Engine, 5...Intake passage, 7...Exhaust passage, 9...EGR valve, 11...Exhaust recirculation passage,
11a...First exhaust gas recirculation passage, 11b...Second exhaust gas recirculation passage, 11a', 11b'...Downstream exhaust gas recirculation passage, 17...ECU, 19, 21...Trap filter, 23, 25...Exhaust bypass Passage, 27, 29...Opening/closing valve, 31, 33...Temperature sensor.
Claims (1)
間に排気還流通路を接続し、当該排気還流通路に
設けたＥＧＲ弁をエンジン運転状態に応じて開閉
制御してなるデイーゼルエンジンのＥＧＲ装置に
於て、上記排気還流通路を第一排気還流通路と第
二排気還流通路とに分岐し、各第一、第二排気還
流通路中にトラツプフイルタを装着し、且つ各ト
ラツプフイルタの下流側に温度センサを設けると
共に、当該各温度センサの下流側排気還流通路と
上記排気通路との間に排気バイパス通路を接続し
、当該排気バイパス通路と排気還流通路との各接
続部に開閉弁を設け、当該温度センサで検出され
た信号に従い上記開閉弁を制御して、一方のトラ
ツプフイルタの再生時に、当該トラツプフイルタ
を再生したＥＧＲガスを排気バイパス通路を介し
て排気通路に導き、他方のトラツプフイルタでＥ
ＧＲを行なうようにしたことを特徴とするデイー
ゼルエンジンのＥＧＲ装置。 In an EGR system for a diesel engine, an exhaust gas recirculation passage is connected between an intake passage and an exhaust passage of the diesel engine, and an EGR valve provided in the exhaust gas recirculation passage is controlled to open and close according to the engine operating state. The exhaust gas recirculation passage is branched into a first exhaust gas recirculation passage and a second exhaust gas recirculation passage, a trap filter is installed in each of the first and second exhaust gas recirculation passages, and a temperature sensor is provided downstream of each trap filter. An exhaust bypass passage is connected between the downstream exhaust recirculation passage of each temperature sensor and the above exhaust passage, and an on-off valve is provided at each connection between the exhaust bypass passage and the exhaust recirculation passage, and the temperature detected by the temperature sensor is The on-off valve is controlled according to the signal, and when one trap filter is regenerated, the EGR gas regenerated from the trap filter is guided to the exhaust passage via the exhaust bypass passage, and the other trap filter
An EGR device for a diesel engine characterized by performing GR.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12497788U JPH0246058U (en) | 1988-09-22 | 1988-09-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12497788U JPH0246058U (en) | 1988-09-22 | 1988-09-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0246058U true JPH0246058U (en) | 1990-03-29 |
Family
ID=31375175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12497788U Pending JPH0246058U (en) | 1988-09-22 | 1988-09-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0246058U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013072377A (en) * | 2011-09-28 | 2013-04-22 | Yanmar Co Ltd | Internal combustion engine with supercharger |
-
1988
- 1988-09-22 JP JP12497788U patent/JPH0246058U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013072377A (en) * | 2011-09-28 | 2013-04-22 | Yanmar Co Ltd | Internal combustion engine with supercharger |
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