JPS55117058A - Air-fuel ratio controlling device for internal combustion engine - Google Patents
Air-fuel ratio controlling device for internal combustion engineInfo
- Publication number
- JPS55117058A JPS55117058A JP2453879A JP2453879A JPS55117058A JP S55117058 A JPS55117058 A JP S55117058A JP 2453879 A JP2453879 A JP 2453879A JP 2453879 A JP2453879 A JP 2453879A JP S55117058 A JPS55117058 A JP S55117058A
- Authority
- JP
- Japan
- Prior art keywords
- negative pressure
- valve
- valve device
- air
- pressure chamber
- 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
Abstract
PURPOSE: To feed secondary air to a suction system for a given period of time when an engine is decelerated and thus to prevent an air-fuel mixture from being thickened excessively by an arrangement wherein a secondary air passage is provided through to suction system to an internal combustion engine and a control valve is provided in the passage.
CONSTITUTION: Scondary air supply pipes 15, 16 are provided through down the stream of a throttle valve 4 of a suction path 5. A valve disc 18 driven by a supply valve device 7 is arranged on the pipes. Then in a negative pressure chamber 10 of the valve device 7, a negative pressure transfer rate is controlled by a negative pressure control valve device 8. The contro valve device 8 has a negative pressure chamber 21 and an accumulator 22 formed with a diaphragm 20 having a throttle 31 and a check valve 30. The negative pressure chamber 21 is connected through to the suction path 5 down the stream of the throttle valve 4 through a pipe 33 and is also connected through to the negative pressure chamber 10 of the valve device 7. Then, the accumulator 22 is through directly down the stream when the throttle valve 4 is closed full. The secondary air is therefore supplied so long as negative pressure works on a negative pressure port 35 of the accumulator 22 at deceleration.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54024538A JPS5928747B2 (en) | 1979-03-05 | 1979-03-05 | Air-fuel ratio control device for internal combustion engines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54024538A JPS5928747B2 (en) | 1979-03-05 | 1979-03-05 | Air-fuel ratio control device for internal combustion engines |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55117058A true JPS55117058A (en) | 1980-09-09 |
JPS5928747B2 JPS5928747B2 (en) | 1984-07-16 |
Family
ID=12140920
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54024538A Expired JPS5928747B2 (en) | 1979-03-05 | 1979-03-05 | Air-fuel ratio control device for internal combustion engines |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5928747B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5982557A (en) * | 1982-10-29 | 1984-05-12 | Honda Motor Co Ltd | Control device for internal-combustion engine |
US4601277A (en) * | 1984-06-25 | 1986-07-22 | Canadian Fram Limited | System for combined EGR and idle speed control |
US4675135A (en) * | 1984-12-05 | 1987-06-23 | Ford Motor Company | Engine intake system with deceleration valve |
-
1979
- 1979-03-05 JP JP54024538A patent/JPS5928747B2/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5982557A (en) * | 1982-10-29 | 1984-05-12 | Honda Motor Co Ltd | Control device for internal-combustion engine |
JPH0152567B2 (en) * | 1982-10-29 | 1989-11-09 | Honda Motor Co Ltd | |
US4601277A (en) * | 1984-06-25 | 1986-07-22 | Canadian Fram Limited | System for combined EGR and idle speed control |
US4675135A (en) * | 1984-12-05 | 1987-06-23 | Ford Motor Company | Engine intake system with deceleration valve |
Also Published As
Publication number | Publication date |
---|---|
JPS5928747B2 (en) | 1984-07-16 |
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