JPS5720528A - Air fuel ratio controller for internal combustion engine - Google Patents
Air fuel ratio controller for internal combustion engineInfo
- Publication number
- JPS5720528A JPS5720528A JP9528780A JP9528780A JPS5720528A JP S5720528 A JPS5720528 A JP S5720528A JP 9528780 A JP9528780 A JP 9528780A JP 9528780 A JP9528780 A JP 9528780A JP S5720528 A JPS5720528 A JP S5720528A
- Authority
- JP
- Japan
- Prior art keywords
- negative pressure
- valve
- egr
- port
- set value
- 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)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
PURPOSE: To provide the best rate of fuel consumption for each load condition of an engine by providing a temperature change-over valve intercommunicating a negative pressure chamber and EGR port in a negative pressure path of a negative pressure control system EGR valve when water temperature in the engine reaches at least a set value.
CONSTITUTION: Secondary air introducing paths 3, 6 are provided with a negative pressure control system EGR valve 1, and a negative pressure path 25 intercommunicating a negative pressure chamber 1a of the EGR valve 1 and EGR port 21 of a carbureter 20 is provided with a temperature change-over valve 2. When water temperature of an engine is lower than a set value this valve 2 intercommunicates the negative chamber 1a and the atmosphere to close valve port 1f without carrying out EGR. Then rich signal is generated from an O2 sensor 15 so that an amount of the secondary air computed by a computer 13 is supplied to an exhaust manifold 17. Also when the water temperature is higher than the set value, the negative pressure chamber 1a communicates to EGR port to be subjected to negative pressure so that the valve port 1f is opened in response to each load to supply corrected secondary air to an intake pipe 18 through a path 3.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9528780A JPS5720528A (en) | 1980-07-12 | 1980-07-12 | Air fuel ratio controller for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9528780A JPS5720528A (en) | 1980-07-12 | 1980-07-12 | Air fuel ratio controller for internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5720528A true JPS5720528A (en) | 1982-02-03 |
Family
ID=14133552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9528780A Pending JPS5720528A (en) | 1980-07-12 | 1980-07-12 | Air fuel ratio controller for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5720528A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005068808A1 (en) * | 2004-01-20 | 2005-07-28 | Honda Motor Co., Ltd. | Control method and control device for internal combustion engine |
-
1980
- 1980-07-12 JP JP9528780A patent/JPS5720528A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005068808A1 (en) * | 2004-01-20 | 2005-07-28 | Honda Motor Co., Ltd. | Control method and control device for internal combustion engine |
| US7472685B2 (en) | 2004-01-20 | 2009-01-06 | Honda Motor Co., Ltd. | Control method and control apparatus of internal combustion engine |
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