JPS5664142A - Air fuel ratio controller - Google Patents
Air fuel ratio controllerInfo
- Publication number
- JPS5664142A JPS5664142A JP14017479A JP14017479A JPS5664142A JP S5664142 A JPS5664142 A JP S5664142A JP 14017479 A JP14017479 A JP 14017479A JP 14017479 A JP14017479 A JP 14017479A JP S5664142 A JPS5664142 A JP S5664142A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- low
- negative pressure
- secondary air
- certain
- 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 rough idling at a low speed running by providing a characteristics that an increasing ratio of an air flow rate is kept low till a certain suction negative pressure, for a secondary air control valve used as an air fuel ratio controller.
CONSTITUTION: A secondary air is carried into a suction manifold 2 via a control valve 4. A certain negative pressure is carried into a negative pressure chamber 43 of the valve 4 via a vacuum regulator 3. A solenoid valve 6 opened or closed by a control unit 7 is provided to regulate a negative pressure which is to be transmitted to the chamber 43. A spring 42 which keeps an opening increasing ratio of a valve 44 low at a range of low negative pressures in an intake passage or at a low revolution speed range is attached to a diaphragm 41 inside the valve 4, by which a secondary air amount is restricted under a certain value to avoid a variation of idling.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14017479A JPS5664142A (en) | 1979-10-30 | 1979-10-30 | Air fuel ratio controller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14017479A JPS5664142A (en) | 1979-10-30 | 1979-10-30 | Air fuel ratio controller |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5664142A true JPS5664142A (en) | 1981-06-01 |
Family
ID=15262600
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14017479A Pending JPS5664142A (en) | 1979-10-30 | 1979-10-30 | Air fuel ratio controller |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5664142A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5376230A (en) * | 1976-12-18 | 1978-07-06 | Bosch Gmbh Robert | Controller of throttle device equipped for regulating composition of exhaust gas in gas supply pipe of internal combustion engine |
JPS5392039A (en) * | 1976-12-06 | 1978-08-12 | Bayerische Motoren Werke Ag | Adjustor of revolution number of idle running of internal combustion engine |
-
1979
- 1979-10-30 JP JP14017479A patent/JPS5664142A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5392039A (en) * | 1976-12-06 | 1978-08-12 | Bayerische Motoren Werke Ag | Adjustor of revolution number of idle running of internal combustion engine |
JPS5376230A (en) * | 1976-12-18 | 1978-07-06 | Bosch Gmbh Robert | Controller of throttle device equipped for regulating composition of exhaust gas in gas supply pipe of internal combustion engine |
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