JPS57126528A - Electronically controlled fuel injection apparatus - Google Patents
Electronically controlled fuel injection apparatusInfo
- Publication number
- JPS57126528A JPS57126528A JP1152181A JP1152181A JPS57126528A JP S57126528 A JPS57126528 A JP S57126528A JP 1152181 A JP1152181 A JP 1152181A JP 1152181 A JP1152181 A JP 1152181A JP S57126528 A JPS57126528 A JP S57126528A
- Authority
- JP
- Japan
- Prior art keywords
- karman
- throttle valve
- eddy flow
- flow rate
- upstream
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/18—Circuit arrangements for generating control signals by measuring intake air flow
- F02D41/185—Circuit arrangements for generating control signals by measuring intake air flow using a vortex flow sensor
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
PURPOSE:To improve the accuracy of controlling the air fuel ratio by switching the control between the output of Karman eddy flow rate sensor which is equipped upstream of a throttle valve and the operation zone based on revolution rate. CONSTITUTION:A Karman eddy flow rate sensor is equipped upstream of the throttle valve 4 which is installed in the suction passage 3 of an engine. The output of the Karman eddy flow rate sensor 5 and the operation zone based on revolution rate are switched over to each other by a change-over circuit 12 based on the signal of the pressure difference switch 17 to which the pressures of both the upstream and downstream of the throttle valve are conducted. The zone for operating the amount of injection fuel by revolution rate is reduced by allowing the change-over zone to come near to the line for Karman sensor use limit. Thus, the accuracy for controlling the air fuel ratio can be improved.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1152181A JPS57126528A (en) | 1981-01-30 | 1981-01-30 | Electronically controlled fuel injection apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1152181A JPS57126528A (en) | 1981-01-30 | 1981-01-30 | Electronically controlled fuel injection apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57126528A true JPS57126528A (en) | 1982-08-06 |
Family
ID=11780276
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1152181A Pending JPS57126528A (en) | 1981-01-30 | 1981-01-30 | Electronically controlled fuel injection apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57126528A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5546033A (en) * | 1978-09-27 | 1980-03-31 | Nissan Motor Co Ltd | Electronic control fuel injection system |
JPS55142943A (en) * | 1979-04-23 | 1980-11-07 | Mitsubishi Motors Corp | Fuel feeding apparatus for engine |
-
1981
- 1981-01-30 JP JP1152181A patent/JPS57126528A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5546033A (en) * | 1978-09-27 | 1980-03-31 | Nissan Motor Co Ltd | Electronic control fuel injection system |
JPS55142943A (en) * | 1979-04-23 | 1980-11-07 | Mitsubishi Motors Corp | Fuel feeding apparatus for engine |
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