JPS56126656A - Air-fuel ratio controlling apparatus of internal combustion engine - Google Patents
Air-fuel ratio controlling apparatus of internal combustion engineInfo
- Publication number
- JPS56126656A JPS56126656A JP2974280A JP2974280A JPS56126656A JP S56126656 A JPS56126656 A JP S56126656A JP 2974280 A JP2974280 A JP 2974280A JP 2974280 A JP2974280 A JP 2974280A JP S56126656 A JPS56126656 A JP S56126656A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- pressure
- passage
- air passage
- air
- 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.)
- Granted
Links
Landscapes
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
PURPOSE: To prevent the breakage of the secondary air passage due to the abnormal rise of the pressure in an intake air passage by installing a valve mechanism which prevents the pressure over a prescribed value from being applied to an air control valve from the intake air passage side, in the secondary air passage on the downstream from the air control valve.
CONSTITUTION: A pressure valve 30 is fitted midway on the secondary air passage 14 of which one end is opened to an intake air passage 10. The valve piece 30a of the pressure valve 30 is pushed by a spring 30b, and when the pressure in the passage 14 is below a prescribed value, the valve is closed. When backfire is formed, and a throttle valve 12 is in closed state, the pressure in the intake air passage 10 on the downstream increases sharply temporarily and transmitted also to the passage 14. At this time, the valve piece 30a is pushed, and the pressure valve 30 is opened, and the passage 14 communicates with the air through the pressure valve 30, so the pressure in the passage 14 does not increase over the fixed value. Therefore, breakage of the passage 14, slip-off of piping, and breakage of an air control valve 16 can be prevented.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2974280A JPS56126656A (en) | 1980-03-11 | 1980-03-11 | Air-fuel ratio controlling apparatus of internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2974280A JPS56126656A (en) | 1980-03-11 | 1980-03-11 | Air-fuel ratio controlling apparatus of internal combustion engine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56126656A true JPS56126656A (en) | 1981-10-03 |
JPS6364625B2 JPS6364625B2 (en) | 1988-12-13 |
Family
ID=12284548
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2974280A Granted JPS56126656A (en) | 1980-03-11 | 1980-03-11 | Air-fuel ratio controlling apparatus of internal combustion engine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56126656A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51117929U (en) * | 1975-03-19 | 1976-09-24 |
-
1980
- 1980-03-11 JP JP2974280A patent/JPS56126656A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51117929U (en) * | 1975-03-19 | 1976-09-24 |
Also Published As
Publication number | Publication date |
---|---|
JPS6364625B2 (en) | 1988-12-13 |
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