JPS5793651A - Air fuel ratio control device for internal combustion engine - Google Patents
Air fuel ratio control device for internal combustion engineInfo
- Publication number
- JPS5793651A JPS5793651A JP16941380A JP16941380A JPS5793651A JP S5793651 A JPS5793651 A JP S5793651A JP 16941380 A JP16941380 A JP 16941380A JP 16941380 A JP16941380 A JP 16941380A JP S5793651 A JPS5793651 A JP S5793651A
- Authority
- JP
- Japan
- Prior art keywords
- air
- valve
- fuel ratio
- passage
- air fuel
- 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
Abstract
PURPOSE: To prevent EGR gas from flowing into an air intake passage even if an air supply passage is closed by closing the first supply valve installed in a passage which supplies secondary air into the air intake passage at lean time.
CONSTITUTION: In case air fuel ratio is found to be lean according to an air fuel ratio sensor 60, the first control valve 36 is switched to the atmospheric air side and the interior of a negative pressure chamber 26 is maintained at the atmospheric air pressure, regardless of operation of a temperature control valve 37. As a result, a valve 28 is pressed by a spring 30 and the first supply valve 22 shuts off the secondary air supply passage 17. The second transfer valve 56 is switched so as to communicate with a negative port 36 and negative pressure chambers 44, 46 are both put into negative pressure condition. Accordingly, a valve 48 is pressed by a spring 50 and the second supply valve 40 shuts off an air supply passage 38.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16941380A JPS5793651A (en) | 1980-12-01 | 1980-12-01 | Air fuel ratio control device for internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16941380A JPS5793651A (en) | 1980-12-01 | 1980-12-01 | Air fuel ratio control device for internal combustion engine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5793651A true JPS5793651A (en) | 1982-06-10 |
Family
ID=15886132
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16941380A Pending JPS5793651A (en) | 1980-12-01 | 1980-12-01 | Air fuel ratio control device for internal combustion engine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5793651A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8671664B2 (en) | 2008-04-15 | 2014-03-18 | G.W. Lisk Company, Inc. | System for purging a device |
-
1980
- 1980-12-01 JP JP16941380A patent/JPS5793651A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8671664B2 (en) | 2008-04-15 | 2014-03-18 | G.W. Lisk Company, Inc. | System for purging a device |
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