JPS5460613A - Exhaust gas purifier for internal combustion engine - Google Patents
Exhaust gas purifier for internal combustion engineInfo
- Publication number
- JPS5460613A JPS5460613A JP12704277A JP12704277A JPS5460613A JP S5460613 A JPS5460613 A JP S5460613A JP 12704277 A JP12704277 A JP 12704277A JP 12704277 A JP12704277 A JP 12704277A JP S5460613 A JPS5460613 A JP S5460613A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- carbon monoxide
- hydrocarbon
- catalyst bed
- inner cylinder
- 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
Landscapes
- Exhaust Gas After Treatment (AREA)
Abstract
PURPOSE: To heighten the exhaust gas purification effect, by oxidizing carbon monoxide and hydrocarbon in the periphery of a first catalyst bed, and reducing nitrogen oxide in the center of the first catalyst bed and causing remaining carbon monoxide and hydrocarbon to react with oxygen in a second catalyst bed.
CONSTITUTION: The exhaust gas flowing through an exhaust pipe 1 is divided into a part, which goes into a passage 15 defined between the exhaust pipe 1 and an inner cylinder 5, and another part, which goes into the inner cylinder 5, before entering a catalytic converter. Secondary air from an inlet port 12 is mixed with the exhaust gas part in the passage 15. The mixture flows into the periphery 8a of the first catalyst bed 8 so that the carbon monoxide and dydrocarbon are oxidized. The exhaust gas part in the inner cylinder 5 flows into the center 8b of the bed 8 so that the nitrogen oxide is reduced to carbon monoxide and hydrocarbon. The remaining oxygen, hydrocarbon and carbon monoxide are mixed with one another in a mixing portion 10. This mixture flows into the second catalyst bed 9 so that the remaining carbon monoxide and hydrocarbon are oxidized by the remaining oxygen.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12704277A JPS5460613A (en) | 1977-10-21 | 1977-10-21 | Exhaust gas purifier for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12704277A JPS5460613A (en) | 1977-10-21 | 1977-10-21 | Exhaust gas purifier for internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5460613A true JPS5460613A (en) | 1979-05-16 |
Family
ID=14950178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12704277A Pending JPS5460613A (en) | 1977-10-21 | 1977-10-21 | Exhaust gas purifier for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5460613A (en) |
-
1977
- 1977-10-21 JP JP12704277A patent/JPS5460613A/en active Pending
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