JPH02131065U - - Google Patents
Info
- Publication number
- JPH02131065U JPH02131065U JP3834589U JP3834589U JPH02131065U JP H02131065 U JPH02131065 U JP H02131065U JP 3834589 U JP3834589 U JP 3834589U JP 3834589 U JP3834589 U JP 3834589U JP H02131065 U JPH02131065 U JP H02131065U
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- exhaust
- recirculation passage
- passage
- gas purification
- 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 2
- 238000007599 discharging Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Exhaust-Gas Circulating Devices (AREA)
Description
第１図はこの考案の好適一実施例を示す概略図
、第２図ないし第５図はスプール弁の切換え状態
を示す断面図、第６図は他の実施例を示す要部詳
細図、第７図及び第８図は排気系の圧力を調整す
るための概略構成図、第９図は従来例を示す図で
ある。
図中、２……吸気管、３……排気管、１０……
排気還流通路、１１……排気分岐通路、１３……
切換え弁手段としてのユニツト弁である。
Fig. 1 is a schematic diagram showing a preferred embodiment of this invention, Figs. 2 to 5 are sectional views showing the switching state of the spool valve, Fig. 6 is a detailed view of main parts showing another embodiment; 7 and 8 are schematic configuration diagrams for adjusting the pressure of the exhaust system, and FIG. 9 is a diagram showing a conventional example. In the figure, 2...intake pipe, 3...exhaust pipe, 10...
Exhaust recirculation passage, 11... Exhaust branch passage, 13...
This is a unit valve as a switching valve means.
Claims (1)
排気分岐通路と、これら通路の下流端を連結し排
気浄化時に上記還流通路のみ開き、通常時に上記
還流通路を閉じて上記分岐通路から導入する排気
ガスを上記還流通路を経由させて排気系へ排出さ
せる切換え弁手段とを備えたことを特徴とする排
気浄化装置。 An exhaust gas recirculation passage connected to the intake system, an exhaust branch passage of the exhaust system, and the downstream ends of these passages are connected, and only the recirculation passage is opened during exhaust gas purification, and the exhaust gas is introduced from the branch passage with the recirculation passage closed during normal operation. An exhaust gas purification device comprising a switching valve means for discharging exhaust gas to an exhaust system via the recirculation passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3834589U JPH02131065U (en) | 1989-03-31 | 1989-03-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3834589U JPH02131065U (en) | 1989-03-31 | 1989-03-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02131065U true JPH02131065U (en) | 1990-10-30 |
Family
ID=31546265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3834589U Pending JPH02131065U (en) | 1989-03-31 | 1989-03-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02131065U (en) |
-
1989
- 1989-03-31 JP JP3834589U patent/JPH02131065U/ja active Pending