JPS55151115A - Exhaust-gas purifying structure for internal combustion engine - Google Patents
Exhaust-gas purifying structure for internal combustion engineInfo
- Publication number
- JPS55151115A JPS55151115A JP5783779A JP5783779A JPS55151115A JP S55151115 A JPS55151115 A JP S55151115A JP 5783779 A JP5783779 A JP 5783779A JP 5783779 A JP5783779 A JP 5783779A JP S55151115 A JPS55151115 A JP S55151115A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust
- components
- uncombusted
- opened
- subsidiary
- 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 Silencers (AREA)
Abstract
PURPOSE: To remove uncombusted HC components in the exhaust system of engine effectively by way of oxidation, by forming in combustion chamber a first exhaust passage for discharging exhaust gas containing a relatively large amount of uncombusted HC components and a second exhaust passage for discharging exhaust gas containing a relatively small amount of uncombusted HC components.
CONSTITUTION: In combustion chamber 3, there are formed a main exhaust port 12 opened by main exhaust valve 11 and a subsidiary exhaust port 14 opened by subsidiary exhaust valve 13. The main exhaust port 12 is connected to outer exhaust passage 17, whereas subsidiary exhaust port 14 is connected to inner exhaust passage 16 which is disposed inside the outer exhaust passage 17 concentrically therewith. Here, arrangement is such that main exhaust valve 11 is opened at the initial stage of exhaust stroke for discharging exhaust gas in combustion chamber 3 containing a relatively small amount of uncombusted HC components, whereas subsidiary exhaust valve 13 is opened at the later stage of exhaust stroke for discharging exhaust gas containing a relatively large amount of HC components. Therefore, exhaust gas containing a relatively large amount of HC components is heated by outer exhaust passage 17, so that the HC components can be oxidized effectively.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5783779A JPS55151115A (en) | 1979-05-11 | 1979-05-11 | Exhaust-gas purifying structure for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5783779A JPS55151115A (en) | 1979-05-11 | 1979-05-11 | Exhaust-gas purifying structure for internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55151115A true JPS55151115A (en) | 1980-11-25 |
Family
ID=13067060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5783779A Pending JPS55151115A (en) | 1979-05-11 | 1979-05-11 | Exhaust-gas purifying structure for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55151115A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4964375A (en) * | 1987-12-08 | 1990-10-23 | Nissan Motor Co., Ltd. | Valve operating mechanism |
| US5042443A (en) * | 1990-07-27 | 1991-08-27 | Francesco Romanelli | Multiple-valve internal combustion engine |
| US5213070A (en) * | 1990-11-07 | 1993-05-25 | Sanshin Kogyo Kabushiki Kaisha | Two-cycle internal combustion engine with sequential exhaust valve openings |
-
1979
- 1979-05-11 JP JP5783779A patent/JPS55151115A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4964375A (en) * | 1987-12-08 | 1990-10-23 | Nissan Motor Co., Ltd. | Valve operating mechanism |
| US5042443A (en) * | 1990-07-27 | 1991-08-27 | Francesco Romanelli | Multiple-valve internal combustion engine |
| US5213070A (en) * | 1990-11-07 | 1993-05-25 | Sanshin Kogyo Kabushiki Kaisha | Two-cycle internal combustion engine with sequential exhaust valve openings |
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