JPH0444423U - - Google Patents
Info
- Publication number
- JPH0444423U JPH0444423U JP8720190U JP8720190U JPH0444423U JP H0444423 U JPH0444423 U JP H0444423U JP 8720190 U JP8720190 U JP 8720190U JP 8720190 U JP8720190 U JP 8720190U JP H0444423 U JPH0444423 U JP H0444423U
- Authority
- JP
- Japan
- Prior art keywords
- catalytic converter
- communication passage
- upstream
- purification device
- check valve
- 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
- 230000003197 catalytic effect Effects 0.000 claims description 6
- 238000000746 purification Methods 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims 2
- 238000002485 combustion reaction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 1
Landscapes
- Exhaust Gas After Treatment (AREA)
Description
第１図はこの考案に係る排気浄化装置の第１実
施例を示す構成説明図、第２図はこの実施例にお
ける低速低負荷域での触媒コンバータ内の流速変
化を示す特性図、第３図は従来の排気浄化装置に
おける触媒コンバータ内の流速変化を示す特性図
、第４図はこの考案の第２実施例を示す構成説明
図、第５図はこの考案の第３実施例を示す構成説
明図である。
３……排気通路、４……触媒コンバータ、５…
…連通路、６……逆止弁、８……共鳴室、１１…
…首管コントロールバルブ、２１……排気管コン
トロールバルブ。
Fig. 1 is a configuration explanatory diagram showing a first embodiment of the exhaust purification device according to this invention, Fig. 2 is a characteristic diagram showing changes in flow velocity in the catalytic converter in the low speed and low load range in this embodiment, and Fig. 3 4 is a characteristic diagram showing the flow velocity change in the catalytic converter in a conventional exhaust purification device, FIG. 4 is a configuration diagram showing the second embodiment of this invention, and FIG. 5 is a construction explanation diagram showing the third embodiment of this invention. It is a diagram. 3...exhaust passage, 4...catalytic converter, 5...
...Communication path, 6...Check valve, 8...Resonance chamber, 11...
...Neck pipe control valve, 21...Exhaust pipe control valve.
Claims (1)
下流側とを連通する連通路を上記触媒コンバータ
と並列に設けるとともに、この連通路内に、触媒
コンバータ下流側から上流側への流れのみを許容
する逆止弁を介装し、かつ上記連通路の所定位置
に、共鳴室を接続したことを特徴とする内燃機関
の排気浄化装置。 A communication passage that communicates the upstream and downstream sides of the catalytic converter installed in the exhaust system is provided in parallel with the catalytic converter, and only flow from the downstream side of the catalytic converter to the upstream side is allowed in this communication passage. 1. An exhaust gas purification device for an internal combustion engine, characterized in that a check valve is interposed therebetween, and a resonance chamber is connected to a predetermined position of the communication passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8720190U JPH0444423U (en) | 1990-08-21 | 1990-08-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8720190U JPH0444423U (en) | 1990-08-21 | 1990-08-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0444423U true JPH0444423U (en) | 1992-04-15 |
Family
ID=31819355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8720190U Pending JPH0444423U (en) | 1990-08-21 | 1990-08-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0444423U (en) |
-
1990
- 1990-08-21 JP JP8720190U patent/JPH0444423U/ja active Pending