JPS5560622A - Scavenging system for internal combustion engine - Google Patents
Scavenging system for internal combustion engineInfo
- Publication number
- JPS5560622A JPS5560622A JP13211578A JP13211578A JPS5560622A JP S5560622 A JPS5560622 A JP S5560622A JP 13211578 A JP13211578 A JP 13211578A JP 13211578 A JP13211578 A JP 13211578A JP S5560622 A JPS5560622 A JP S5560622A
- Authority
- JP
- Japan
- Prior art keywords
- scavenging
- under
- load region
- piston
- low
- 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
- Supercharger (AREA)
Abstract
PURPOSE: To provide a scavenging system for internal combustion engine, in which a means for interrupting air compressing function of under piston is provided so as to actuate under-piston pump in low load region but to make the same inoperative in high load region, whereby it is enabled to lower fuel consumption over the entire range of engine load.
CONSTITUTION: In order to achieve switching between operative condition and inoperative condition of under piston, a check valve 9 for allowing air to flow only from common air sump 1 to a first scavenging chamber 2 is designed to be movable. That is, an opening regulating means is provided for enabling to keep the check valve 8 open. Or otherwise, in order to achieve the above switching, a valve 11 is disposed between the common air sump 1 and a second scavenging chamber 2 or between the common air sump 1 and the first scavenging chamber 2, so that under- piston pump is made to operate in low-load region where scavenging pressure and scavenging efficiency are both low but the under-piston pump is made inoperative in high-load region where scavenging pressure is high and scavenging of combustion gas is not complete.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13211578A JPS5560622A (en) | 1978-10-28 | 1978-10-28 | Scavenging system for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13211578A JPS5560622A (en) | 1978-10-28 | 1978-10-28 | Scavenging system for internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5560622A true JPS5560622A (en) | 1980-05-07 |
Family
ID=15073767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13211578A Pending JPS5560622A (en) | 1978-10-28 | 1978-10-28 | Scavenging system for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5560622A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6183453A (en) * | 1984-09-29 | 1986-04-28 | Mitsubishi Heavy Ind Ltd | Auxiliary scavenging pump |
-
1978
- 1978-10-28 JP JP13211578A patent/JPS5560622A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6183453A (en) * | 1984-09-29 | 1986-04-28 | Mitsubishi Heavy Ind Ltd | Auxiliary scavenging pump |
| JPH0512528B2 (en) * | 1984-09-29 | 1993-02-18 | Mitsubishi Heavy Ind Ltd |
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