JPS5624521A - Method and device for converting function for hot-wire type flowmeter - Google Patents
Method and device for converting function for hot-wire type flowmeterInfo
- Publication number
- JPS5624521A JPS5624521A JP10063579A JP10063579A JPS5624521A JP S5624521 A JPS5624521 A JP S5624521A JP 10063579 A JP10063579 A JP 10063579A JP 10063579 A JP10063579 A JP 10063579A JP S5624521 A JPS5624521 A JP S5624521A
- Authority
- JP
- Japan
- Prior art keywords
- hot
- wire type
- type flowmeter
- flow velocity
- sucked air
- 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 accurately and quickly convert the function, by referring to processes for reading output voltage at prescribed time intervals and to a memory for flow rates corresponding to the output voltages of a hot-wire type flowmeter which have various discrete values, about the output voltages to pick out a flow rate.
CONSTITUTION: The voltage, which shows the instantaneous flow velocity of sucked air to an engine, is applied from the hot-wire type flowmeter 1 to a lead 20. An analogue/digital converter 2 connected to the output 20 of the flowmeter 1 samples the output voltage applied to the lead 20, in accordance with timing pulses supplied by a timing pulse generator 6, to convert the output voltage into a corresponding digital quantity. At every time when the flow velocity Vin is read, a computer 7 refers to a table in a memory on the basis of the flow velocity, instead of performing calculation according to a biquadratic equation Q=(V2-Vo2)2, to determine the quantity of the sucked air. The quantity of the sucked air is thus quickly and accurately measured.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10063579A JPS5624521A (en) | 1979-08-07 | 1979-08-07 | Method and device for converting function for hot-wire type flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10063579A JPS5624521A (en) | 1979-08-07 | 1979-08-07 | Method and device for converting function for hot-wire type flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5624521A true JPS5624521A (en) | 1981-03-09 |
Family
ID=14279284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10063579A Pending JPS5624521A (en) | 1979-08-07 | 1979-08-07 | Method and device for converting function for hot-wire type flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5624521A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4649745A (en) * | 1983-11-16 | 1987-03-17 | Nippondenso Co., Ltd. | Apparatus for measuring a flow rate of intake air for an engine |
| JPS6253362U (en) * | 1985-09-20 | 1987-04-02 | ||
| US4713765A (en) * | 1984-02-24 | 1987-12-15 | Nippondenso Co., Ltd. | Control system for an engine having an air intake passage |
| US4736302A (en) * | 1984-06-13 | 1988-04-05 | Nippondenso Co., Ltd. | Control system for determining the quantity of intake air of an internal combustion engine |
| JPH02147009U (en) * | 1989-05-18 | 1990-12-13 |
-
1979
- 1979-08-07 JP JP10063579A patent/JPS5624521A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4649745A (en) * | 1983-11-16 | 1987-03-17 | Nippondenso Co., Ltd. | Apparatus for measuring a flow rate of intake air for an engine |
| US4713765A (en) * | 1984-02-24 | 1987-12-15 | Nippondenso Co., Ltd. | Control system for an engine having an air intake passage |
| US4736302A (en) * | 1984-06-13 | 1988-04-05 | Nippondenso Co., Ltd. | Control system for determining the quantity of intake air of an internal combustion engine |
| JPS6253362U (en) * | 1985-09-20 | 1987-04-02 | ||
| JPH02147009U (en) * | 1989-05-18 | 1990-12-13 | ||
| JPH0630001Y2 (en) * | 1989-05-18 | 1994-08-17 | 勝 赤木 | Boots |
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