JPS55153848A - Exhaust gas recycling device for internal combustion engine - Google Patents
Exhaust gas recycling device for internal combustion engineInfo
- Publication number
- JPS55153848A JPS55153848A JP5963579A JP5963579A JPS55153848A JP S55153848 A JPS55153848 A JP S55153848A JP 5963579 A JP5963579 A JP 5963579A JP 5963579 A JP5963579 A JP 5963579A JP S55153848 A JPS55153848 A JP S55153848A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- negative pressure
- amount
- pressure chamber
- acceleration
- 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 NOX at the time of acceleration by providing the 1st valve device, which increases the amount of exhaust gas in proportion to air intake, and the 2nd valve derive, which makes it inversely proportional to negative pressure, and by increasing the amount of return flow particularly at the time of acceleration.
CONSTITUTION: The suction and the exhaust pipe of an engine 1 are connected by means of return flow pipes 19 and 20, having the 1st and the 2nd control valves 7 and 9. A negative pressure chamber 12 of the 1st control valve 7 is connected to suction pipe 3 placed slightly upward of a throttle valve 4 when it is completely closed, via the negative pressure adjusting valve 8, and its opening increases with the increase in the amount of air. A negative pressure chamber 33 of the 2nd control valve 9 is connected to a suction manifold 2 via a throttle 49, and its opening decreases with the increase in the amount of negative pressure. Further, the negative pressure chamber 33 is provided with a cutout valve 10, which controls external air from pipe 52. At the time of acceleration, a valve 51 is opened by the pressure transfer delay between negative pressure chambers 39 and 40, and a valve 37 is opened so as to make the pressure chamber 33 into atmospheric pressure.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5963579A JPS55153848A (en) | 1979-05-17 | 1979-05-17 | Exhaust gas recycling device for internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5963579A JPS55153848A (en) | 1979-05-17 | 1979-05-17 | Exhaust gas recycling device for internal combustion engine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55153848A true JPS55153848A (en) | 1980-12-01 |
Family
ID=13118879
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5963579A Pending JPS55153848A (en) | 1979-05-17 | 1979-05-17 | Exhaust gas recycling device for internal combustion engine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55153848A (en) |
-
1979
- 1979-05-17 JP JP5963579A patent/JPS55153848A/en active Pending
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