JPS5564146A - Exhaust return control device for internal combustion device - Google Patents
Exhaust return control device for internal combustion deviceInfo
- Publication number
- JPS5564146A JPS5564146A JP13516078A JP13516078A JPS5564146A JP S5564146 A JPS5564146 A JP S5564146A JP 13516078 A JP13516078 A JP 13516078A JP 13516078 A JP13516078 A JP 13516078A JP S5564146 A JPS5564146 A JP S5564146A
- Authority
- JP
- Japan
- Prior art keywords
- negative pressure
- high load
- throttle valve
- exhaust
- flow control
- 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 Circulating Devices (AREA)
Abstract
PURPOSE: To increase the rate of exhaust return at a high load, increase the compression ratio, save fuel cost and increase the output, by providing in an exhaust return passage a flow control device which operates in accordance with the high load detection signal provided by a high load detection means.
CONSTITUTION: At the time of partial load operation including low load operation where throttle valve 7 is not fully opened, throttle valve switch 13 is kept open, and negative pressure change valve 9 is not operative. For this reason, VC negative pressure is drawn from VC negative pressure intake 8 into the negative pressure chamber of flow control valve 5, and in the same way as in the conventional method, the amount of exhaust return is controlled. On the other hand, at the time of high load where throttle valve 7 is open nearly to the full, throttle valve switch 13 is closed and negative pressure change valve 9 is switched. By this, the sucked negative pressure held in vacuum tank 11 is drawn into the above-mentioned negative pressure chamber. Consequently, at the time of high load where VC negative pressure is near the positive pressure, also, flow control valve 5 is open, and the return of exhaust is operated.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13516078A JPS5564146A (en) | 1978-11-04 | 1978-11-04 | Exhaust return control device for internal combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13516078A JPS5564146A (en) | 1978-11-04 | 1978-11-04 | Exhaust return control device for internal combustion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5564146A true JPS5564146A (en) | 1980-05-14 |
Family
ID=15145215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13516078A Pending JPS5564146A (en) | 1978-11-04 | 1978-11-04 | Exhaust return control device for internal combustion device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5564146A (en) |
-
1978
- 1978-11-04 JP JP13516078A patent/JPS5564146A/en active Pending
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