JPS55164722A - Apparatus for improving combustion of mixture in four-cycle internal combustion engine - Google Patents
Apparatus for improving combustion of mixture in four-cycle internal combustion engineInfo
- Publication number
- JPS55164722A JPS55164722A JP7266379A JP7266379A JPS55164722A JP S55164722 A JPS55164722 A JP S55164722A JP 7266379 A JP7266379 A JP 7266379A JP 7266379 A JP7266379 A JP 7266379A JP S55164722 A JPS55164722 A JP S55164722A
- Authority
- JP
- Japan
- Prior art keywords
- combustion chamber
- swirl
- combusted gas
- flow
- engine
- 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.)
- Granted
Links
Landscapes
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Exhaust-Gas Circulating Devices (AREA)
- Exhaust Silencers (AREA)
Abstract
PURPOSE: To reduce the amount of noxious uncombusted components contained in exhaust gas of an internal combustion engine, by providing in the exhaust system a means for producing swirl in the combustion chamber by combusted gas flowing back into the combustion chamber, and thereby improving combustion of mixture, in particular, in low-load operational range of engine.
CONSTITUTION: On the wall of combustion chamber 4, there is formed a swirl producing guide wall 14 for producing swirl of combusted gas flowing back into combustion chamber 4 through exhaust passage 10 when valve opening time of intake valve 12 and that of exhaust valve 13 are overlapped. Reflection flow of combusted gas flowing back into combustion chamber 4 through exhaust passage 10 and colliding onto an arcuate inner surface of guide wall 14 is converged and flows in combustion chamber 4 in a strong swirl directed in the same direction. In particular, when engine is operated in its low-load operational range, fresh mixture introduced into cumbustion chamber 4 is governed by the swirl of back-flow combusted gas since the amount of intake air is small, and resultantly, the back-flow combusted gas fresh mixture mixed together flow in combustion chamber 4 forming a strong swirl therein.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7266379A JPS55164722A (en) | 1979-06-09 | 1979-06-09 | Apparatus for improving combustion of mixture in four-cycle internal combustion engine |
| US06/157,188 US4354463A (en) | 1979-06-09 | 1980-06-06 | Device for improving combustion efficiency of mixture in four cycle internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7266379A JPS55164722A (en) | 1979-06-09 | 1979-06-09 | Apparatus for improving combustion of mixture in four-cycle internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55164722A true JPS55164722A (en) | 1980-12-22 |
| JPS6218728B2 JPS6218728B2 (en) | 1987-04-24 |
Family
ID=13495821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7266379A Granted JPS55164722A (en) | 1979-06-09 | 1979-06-09 | Apparatus for improving combustion of mixture in four-cycle internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55164722A (en) |
-
1979
- 1979-06-09 JP JP7266379A patent/JPS55164722A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6218728B2 (en) | 1987-04-24 |
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