JPS5523352A - Atmospheric pressure correction device of internal combustion engine - Google Patents
Atmospheric pressure correction device of internal combustion engineInfo
- Publication number
- JPS5523352A JPS5523352A JP9571778A JP9571778A JPS5523352A JP S5523352 A JPS5523352 A JP S5523352A JP 9571778 A JP9571778 A JP 9571778A JP 9571778 A JP9571778 A JP 9571778A JP S5523352 A JPS5523352 A JP S5523352A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- pressure sensor
- atmospheric pressure
- air
- venturi
- 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
Abstract
PURPOSE: To properly correct air fuel ratio continually, by mounting a by-path that a flow-rate control valve, which calculates the quantity of air corrected in response to the change of atmospheric pressure and is driven by the signals, is installed between an upper stream portion of a Venturi and a lower stream of a throttle valve.
CONSTITUTION: Air filtered by means of an air cleaner 1 passed through an intake system 2 and a by-path 4 and is supplied to an engine E. A pressure sensor 13 detects the pressure of an upper stream of a Venturi portion 2a, a pressure sensor 10 the negative pressure of the Venturi, a pressure sensor 12 the thrust of intake and a pressure sensor 11 atmospheric pressure. When atmospheric pressure changes, the optimum quantity of air corrected at that time is counted by means of a computing circuit 14 on the basis of pressure signals detected by means of each pressure sensor 10, 11, 12, 13, and an opening of a flow-rate control valve 9 is controlled by the output, thus appropriately correcting air fuel ratio all the time.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9571778A JPS5523352A (en) | 1978-08-04 | 1978-08-04 | Atmospheric pressure correction device of internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9571778A JPS5523352A (en) | 1978-08-04 | 1978-08-04 | Atmospheric pressure correction device of internal combustion engine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5523352A true JPS5523352A (en) | 1980-02-19 |
Family
ID=14145224
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9571778A Pending JPS5523352A (en) | 1978-08-04 | 1978-08-04 | Atmospheric pressure correction device of internal combustion engine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5523352A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8272635B2 (en) | 2008-10-07 | 2012-09-25 | Oki Data Corporation | Image forming apparatus |
-
1978
- 1978-08-04 JP JP9571778A patent/JPS5523352A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8272635B2 (en) | 2008-10-07 | 2012-09-25 | Oki Data Corporation | Image forming apparatus |
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