JPS55148950A - Exhaust-gas recirculating device - Google Patents
Exhaust-gas recirculating deviceInfo
- Publication number
- JPS55148950A JPS55148950A JP5630079A JP5630079A JPS55148950A JP S55148950 A JPS55148950 A JP S55148950A JP 5630079 A JP5630079 A JP 5630079A JP 5630079 A JP5630079 A JP 5630079A JP S55148950 A JPS55148950 A JP S55148950A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- negative pressure
- negative
- pressure chamber
- exhaust
- 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 reduce the recirculating amount of exhaust gas during acceleration for preventing the air-fuel ratio from lowering by providing a couple of exhaust-gas recirculation control valves and opening one of them with a time delay via a delay device at the time of a load change for acceleration.
CONSTITUTION: Suction and exhaust pipes 3 and 8 are connected via a return passage 11 provided with the first and the second control valve 13 and 14. A suction pipe negative pressure near a throttle valve 2 is introduced into a negative pressure chamber 16 of the first valve 13 via a negative-pressure regulation valve 24. An operation chamber 26 of the regulation valve 24 is connected to a pressure chamber 20 provided to the passage 11 for switching over to the open air in accordance with exhaust gas pressure and regulating the amount of negative pressure to the negative pressure chamber 16. Meanwhile, in the second valve 14, a valve body 44 is closed as a negative pressure is transmitted to a negative pressure chamber 41. The negative pressure in the suction manifold 3 is introduced into the negative pressure chamber 41 via a negative-pressure delay valve 46. For acceleration, the lowering of the negative pressure is transmitted with a delay via the valve 46 for delaying the opening of the valve body 44.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5630079A JPS55148950A (en) | 1979-05-10 | 1979-05-10 | Exhaust-gas recirculating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5630079A JPS55148950A (en) | 1979-05-10 | 1979-05-10 | Exhaust-gas recirculating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55148950A true JPS55148950A (en) | 1980-11-19 |
Family
ID=13023263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5630079A Pending JPS55148950A (en) | 1979-05-10 | 1979-05-10 | Exhaust-gas recirculating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55148950A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1375876A2 (en) | 2002-06-28 | 2004-01-02 | Kabushiki Kaisha Toyota Jidoshokki | Apparatus and method for controlling EGR in an engine |
-
1979
- 1979-05-10 JP JP5630079A patent/JPS55148950A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1375876A2 (en) | 2002-06-28 | 2004-01-02 | Kabushiki Kaisha Toyota Jidoshokki | Apparatus and method for controlling EGR in an engine |
| US6973785B2 (en) | 2002-06-28 | 2005-12-13 | Kabushiki Kaisha Toyota Jidoshokki | Apparatus and method for controlling EGR in an engine |
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