JPS5744748A - Controlling device of air-fuel ratio - Google Patents
Controlling device of air-fuel ratioInfo
- Publication number
- JPS5744748A JPS5744748A JP55118260A JP11826080A JPS5744748A JP S5744748 A JPS5744748 A JP S5744748A JP 55118260 A JP55118260 A JP 55118260A JP 11826080 A JP11826080 A JP 11826080A JP S5744748 A JPS5744748 A JP S5744748A
- Authority
- JP
- Japan
- Prior art keywords
- air
- valve
- negative pressure
- port
- fuel ratio
- 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
- 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)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
PURPOSE: To show an excellent effect to air-fuel ratio control in time of a shift change by a method wherein a means is provided which detects that a throttle value has taken an idle opening and which sends the air to the negative chamber of an air suction valve.
CONSTITUTION: A negative pressure switch 71 for sending the necessary output is provided on an electronic controlling part 48 including a microprocessor which detects that the throttle valve 2 has taken an idle opening and sends the air to the negative pressure chamber 39 of the air suction valve 35. In a shift change, when the throttle valve 2 returns to an idle opening and a sensing port 68 comes to the downstream of the throttle valve 2, the switch 71 operates by change of negative pressures at the port 68. The electronic controlling part 48 detects the output of the switch 71 and in a shift change a port 49 of an electromagnetic valve 47 is connected to a port 50 for an intended time irrespective of the output of an air-fuel ratio sensor 54. In this manner, the negative pressure of a suction pipe is supplied to the negative pressure chamber 39 of the air suction valve 35, a valve body 41 leaves its valve seat and the air is introduced into a suction branch pipe 4.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55118260A JPS5744748A (en) | 1980-08-29 | 1980-08-29 | Controlling device of air-fuel ratio |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55118260A JPS5744748A (en) | 1980-08-29 | 1980-08-29 | Controlling device of air-fuel ratio |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5744748A true JPS5744748A (en) | 1982-03-13 |
JPS641657B2 JPS641657B2 (en) | 1989-01-12 |
Family
ID=14732215
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55118260A Granted JPS5744748A (en) | 1980-08-29 | 1980-08-29 | Controlling device of air-fuel ratio |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5744748A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6173038U (en) * | 1984-10-18 | 1986-05-17 |
-
1980
- 1980-08-29 JP JP55118260A patent/JPS5744748A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6173038U (en) * | 1984-10-18 | 1986-05-17 | ||
JPH0338449Y2 (en) * | 1984-10-18 | 1991-08-14 |
Also Published As
Publication number | Publication date |
---|---|
JPS641657B2 (en) | 1989-01-12 |
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