JPS55156228A - Electronic fuel injection device - Google Patents
Electronic fuel injection deviceInfo
- Publication number
- JPS55156228A JPS55156228A JP6294279A JP6294279A JPS55156228A JP S55156228 A JPS55156228 A JP S55156228A JP 6294279 A JP6294279 A JP 6294279A JP 6294279 A JP6294279 A JP 6294279A JP S55156228 A JPS55156228 A JP S55156228A
- Authority
- JP
- Japan
- Prior art keywords
- sensor
- air
- fuel
- fuel injection
- 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.)
- Pending
Links
Landscapes
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
PURPOSE: To give full play to the engine performance and improve feeling of vehicle driving, by increasing fuel injection, with a detecting circuit, when an air-fuel ratio sensor is inactive due to high internal impedance.
CONSTITUTION: An incremental circuit 20 discriminates whether an air-fuel ratio sensor 10 is inactive due to its internal impedance and puts out a signal to increase fuel injection if the sensor is detected inactive. An air-fuel ratio control circuit 30 receives the signal from the sensor 10 to discriminate whether the ratio is below a preset level and controls the ratio to the preset level. A fuel control circuit 40 is synchronized to the engine revolution and puts out electric pulse signals with a pulse width in accordance with the engine suction for controlling an injection valve 50.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6294279A JPS55156228A (en) | 1979-05-22 | 1979-05-22 | Electronic fuel injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6294279A JPS55156228A (en) | 1979-05-22 | 1979-05-22 | Electronic fuel injection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55156228A true JPS55156228A (en) | 1980-12-05 |
Family
ID=13214850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6294279A Pending JPS55156228A (en) | 1979-05-22 | 1979-05-22 | Electronic fuel injection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55156228A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4905469A (en) * | 1987-10-20 | 1990-03-06 | Toyota Jidosha Kabushiki Kaisha | Air-fuel ratio feedback system having improved activation determination for air-fuel ratio sensor |
| US4941318A (en) * | 1988-03-01 | 1990-07-17 | Toyota Jidosha Kabushiki Kaisha | Air-fuel ratio feedback control system having short-circuit detection for air-fuel ratio sensor |
| US4970858A (en) * | 1988-03-30 | 1990-11-20 | Toyota Jidosha Kabushiki Kaisha | Air-fuel ratio feedback system having improved activation determination for air-fuel ratio sensor |
-
1979
- 1979-05-22 JP JP6294279A patent/JPS55156228A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4905469A (en) * | 1987-10-20 | 1990-03-06 | Toyota Jidosha Kabushiki Kaisha | Air-fuel ratio feedback system having improved activation determination for air-fuel ratio sensor |
| US4941318A (en) * | 1988-03-01 | 1990-07-17 | Toyota Jidosha Kabushiki Kaisha | Air-fuel ratio feedback control system having short-circuit detection for air-fuel ratio sensor |
| US4970858A (en) * | 1988-03-30 | 1990-11-20 | Toyota Jidosha Kabushiki Kaisha | Air-fuel ratio feedback system having improved activation determination for air-fuel ratio sensor |
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