FR2259355B1 - - Google Patents
Info
- Publication number
- FR2259355B1 FR2259355B1 FR7502621A FR7502621A FR2259355B1 FR 2259355 B1 FR2259355 B1 FR 2259355B1 FR 7502621 A FR7502621 A FR 7502621A FR 7502621 A FR7502621 A FR 7502621A FR 2259355 B1 FR2259355 B1 FR 2259355B1
- Authority
- FR
- France
- 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.)
- Expired
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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
- G01F1/667—Arrangements of transducers for ultrasonic flowmeters; Circuits for operating ultrasonic flowmeters
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT6723874A IT1004813B (it) | 1974-01-29 | 1974-01-29 | Dispositivo per la misura della por tata d aria in massa in condotti di alimentazione per motori a combu stione interna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2259355A1 FR2259355A1 (en) | 1975-08-22 |
| FR2259355B1 true FR2259355B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1978-08-18 |
Family
ID=11300737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7502621A Granted FR2259355A1 (en) | 1974-01-29 | 1975-01-28 | Air supply measuring device for I.C. engine - computes air speed from phase difference of ultrasonic wave at two detectors |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR2259355A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
| IT (1) | IT1004813B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2963483D1 (en) * | 1978-07-22 | 1982-09-30 | Robert James Redding | Fluid flow measuring apparatus |
| JPS587523A (ja) * | 1981-07-07 | 1983-01-17 | Honda Motor Co Ltd | 車両用超音波式空気流量計 |
| EP0262441B1 (de) * | 1986-09-30 | 1991-03-27 | Siemens Aktiengesellschaft | Ultraschall-Phasendifferenzverfahren zur Messung hoher Strömungsgeschwindigkeiten |
-
1974
- 1974-01-29 IT IT6723874A patent/IT1004813B/it active
-
1975
- 1975-01-28 FR FR7502621A patent/FR2259355A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| IT1004813B (it) | 1976-07-20 |
| FR2259355A1 (en) | 1975-08-22 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| TP | Transmission of property | ||
| ST | Notification of lapse |