JPH0444426U - - Google Patents
Info
- Publication number
- JPH0444426U JPH0444426U JP8698990U JP8698990U JPH0444426U JP H0444426 U JPH0444426 U JP H0444426U JP 8698990 U JP8698990 U JP 8698990U JP 8698990 U JP8698990 U JP 8698990U JP H0444426 U JPH0444426 U JP H0444426U
- Authority
- JP
- Japan
- Prior art keywords
- catalytic converter
- exhaust pipe
- combustion engine
- internal combustion
- purification device
- 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 8
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 238000000746 purification Methods 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
- 230000010349 pulsation Effects 0.000 description 2
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一実施
例を示す平面図、第２図は一方の触媒コンバータ
の入口部分における排気脈動を示す特性図、第３
図は他方の触媒コンバータの入口部分における排
気脈動を示す特性図、第４図はこの実施例におけ
るＨＣ排出量を従来例と比較して示す特性図であ
る。
１……内燃機関、２，３……排気マニホルド、
４，５……フロントチユーブ、６，７……触媒コ
ンバータ、９，１１……連通路、１０，１２……
逆止弁。
FIG. 1 is a plan view showing an embodiment of the exhaust purification device according to this invention, FIG. 2 is a characteristic diagram showing exhaust pulsation at the inlet of one catalytic converter, and FIG.
FIG. 4 is a characteristic diagram showing the exhaust pulsation at the inlet of the other catalytic converter, and FIG. 4 is a characteristic diagram showing the HC emission amount in this embodiment in comparison with the conventional example. 1... Internal combustion engine, 2, 3... Exhaust manifold,
4, 5... Front tube, 6, 7... Catalytic converter, 9, 11... Communication passage, 10, 12...
non-return valve.
Claims (1)
ように２つに分けた気筒群を各排気管に接続する
とともに、各排気管毎に触媒コンバータを介装し
てなる内燃機関の排気浄化装置において、一方の
触媒コンバータの下流側と他方の触媒コンバータ
の上流側とを連通する連通路をそれぞれに設け、
かつこの連通路に、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それぞれ介
装したことを特徴とする内燃機関の排気浄化装置
。 An exhaust gas purification device for an internal combustion engine that divides the exhaust pipe into two systems, connects the two divided cylinder groups to each exhaust pipe so that the ignition order is not consecutive, and installs a catalytic converter in each exhaust pipe. A communication passage is provided in each of the catalytic converters to communicate the downstream side of one catalytic converter with the upstream side of the other catalytic converter,
An exhaust gas purification device for an internal combustion engine, characterized in that each of the communication passages is provided with a check valve that allows flow only from the downstream side to the upstream side of the catalytic converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8698990U JPH0444426U (en) | 1990-08-20 | 1990-08-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8698990U JPH0444426U (en) | 1990-08-20 | 1990-08-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0444426U true JPH0444426U (en) | 1992-04-15 |
Family
ID=31818971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8698990U Pending JPH0444426U (en) | 1990-08-20 | 1990-08-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0444426U (en) |
-
1990
- 1990-08-20 JP JP8698990U patent/JPH0444426U/ja active Pending
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