JPS56162254A - Exhaust gas recirculating apparatus - Google Patents
Exhaust gas recirculating apparatusInfo
- Publication number
- JPS56162254A JPS56162254A JP4276880A JP4276880A JPS56162254A JP S56162254 A JPS56162254 A JP S56162254A JP 4276880 A JP4276880 A JP 4276880A JP 4276880 A JP4276880 A JP 4276880A JP S56162254 A JPS56162254 A JP S56162254A
- Authority
- JP
- Japan
- Prior art keywords
- egr
- negative pressure
- valve
- exhaust gas
- passage
- 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 quantity of EGR at the time of acceleration of an engine and to reduce the generation of NOx by a method wherein there are provided a couple of EGR ports in the exhaust gas recirculting apparatus in such a manner that the EGR ports are operated with a certain time delay one from the other.
CONSTITUTION: There are provided the first and the second EGR ports 5 and 6 in an air sucking passage 1 at a position right above a throttle valve 2 in a fully closed state while an EGR valve 3 is provided in a passage for returning a part of the exhaust gas to an air sucking system so as to adjust the quantity of the exhaust gas. The negative air sucking pressure in the first EGR port 5 is directly introduced into a negative pressure chamber (not shown) of the EGR valve 3 through a passage 14. Further, the negative pressure in the first port 5 is transmitted to a negative pressure chamber 8 in a negative pressure control valve 7 with some delay through an orifice 4 so that a valve body 11 is delayed in opening. When the valve body 11 is released, the negative pressure in the second port 6 is transmitted to the EGR valve 3 through a passage 13. Therefore, the EGR valve 3 opened in sequence by the negative pressure in both the ports 5 and 6.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4276880A JPS56162254A (en) | 1980-04-03 | 1980-04-03 | Exhaust gas recirculating apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4276880A JPS56162254A (en) | 1980-04-03 | 1980-04-03 | Exhaust gas recirculating apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56162254A true JPS56162254A (en) | 1981-12-14 |
Family
ID=12645146
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4276880A Pending JPS56162254A (en) | 1980-04-03 | 1980-04-03 | Exhaust gas recirculating apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56162254A (en) |
-
1980
- 1980-04-03 JP JP4276880A patent/JPS56162254A/en active Pending
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