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FR2436974A1 - Appareil de mesure de debit a fil chaud - Google Patents

Appareil de mesure de debit a fil chaud

Info

Publication number
FR2436974A1
FR2436974A1 FR7923623A FR7923623A FR2436974A1 FR 2436974 A1 FR2436974 A1 FR 2436974A1 FR 7923623 A FR7923623 A FR 7923623A FR 7923623 A FR7923623 A FR 7923623A FR 2436974 A1 FR2436974 A1 FR 2436974A1
Authority
FR
France
Prior art keywords
thermo
sensitive
circuit
voltage
measuring apparatus
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.)
Granted
Application number
FR7923623A
Other languages
English (en)
Other versions
FR2436974B1 (fr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Publication of FR2436974A1 publication Critical patent/FR2436974A1/fr
Application granted granted Critical
Publication of FR2436974B1 publication Critical patent/FR2436974B1/fr
Granted legal-status Critical Current

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
    • F02D41/187—Circuit arrangements for generating control signals by measuring intake air flow using a hot wire flow sensor
    • 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
    • G01F1/68—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 using thermal effects
    • G01F1/696—Circuits therefor, e.g. constant-current flow meters
    • G01F1/698—Feedback or rebalancing circuits, e.g. self heated constant temperature flowmeters

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Measuring Volume Flow (AREA)
  • Details Of Flowmeters (AREA)

Abstract

L'INVENTION CONCERNE UN APPAREIL DE MESURE DE DEBIT A FIL CHAUD. IL COMPORTE UN PREMIER CIRCUIT EN SERIE COMPRENANT UNE PREMIERE RESISTANCE THERMO-SENSIBLE PLACEE DANS LE CIRCUIT D'ECOULEMENT DU FLUIDE ET UNE PREMIERE RESISTANCE, UN CIRCUIT DE DIVISION DE LA TENSION AUX BORNES DE LA PREMIERE RESISTANCE THERMO-SENSIBLE, UNE SECONDE RESISTANCE THERMO-SENSIBLE DE COMPENSATION DE TEMPERATURE PLACEE DANS LE CIRCUIT DU FLUIDE, UN DISPOSITIF DE DETECTION DE LA DIFFERENCE ENTRE LA TENSION DE SORTIE DU DIVISEUR DE TENSION ET LA TENSION DE SORTIE DE LA SECONDE RESISTANCE THERMO-SENSIBLE, UN DISPOSITIF QUI COMMANDE LE COURANT FOURNI AU CIRCUIT EN SERIE EN FONCTION DE LA TENSION DETECTEE PAR LE DISPOSITIF DE DETECTION ET UN DISPOSITIF DE SORTIE QUI PRODUIT UNE TENSION REPRESENTANT LE DEBIT DU FLUIDE. L'INVENTION S'APPLIQUE NOTAMMENT A LA MESURE DU DEBIT D'AIR D'ADMISSION DANS UN MOTEUR A COMBUSTION INTERNE.
FR7923623A 1978-09-22 1979-09-21 Appareil de mesure de debit a fil chaud Granted FR2436974A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11705178A JPS5543447A (en) 1978-09-22 1978-09-22 Hot-wire type flow rate measuring device

Publications (2)

Publication Number Publication Date
FR2436974A1 true FR2436974A1 (fr) 1980-04-18
FR2436974B1 FR2436974B1 (fr) 1984-06-15

Family

ID=14702201

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7923623A Granted FR2436974A1 (fr) 1978-09-22 1979-09-21 Appareil de mesure de debit a fil chaud

Country Status (5)

Country Link
US (1) US4297881A (fr)
JP (1) JPS5543447A (fr)
DE (1) DE2938322C2 (fr)
FR (1) FR2436974A1 (fr)
GB (1) GB2034482B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0241424A1 (fr) * 1986-04-08 1987-10-14 Battelle Memorial Institute Procédé pour déterminer le débit d'un fluide

Families Citing this family (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5618721A (en) * 1979-07-24 1981-02-21 Hitachi Ltd Air flow meter
JPS5639523U (fr) * 1979-09-04 1981-04-13
JPS5638542A (en) * 1979-09-05 1981-04-13 Hitachi Ltd Controlling method for engine
JPS5692330A (en) * 1979-12-25 1981-07-27 Hitachi Ltd Signal processing method for hot wire flow sensor
US4576182A (en) * 1981-04-23 1986-03-18 University Of Utah Method and apparatus for measuring liquid flow
JPS57208412A (en) * 1981-06-19 1982-12-21 Hitachi Ltd Thermal type flow rate detecting device
JPS5919815A (ja) * 1982-07-26 1984-02-01 Shimadzu Corp 放熱型流量センサの駆動方法
JPS5935109A (ja) * 1982-08-23 1984-02-25 Hitachi Ltd 熱式流量計
US4450719A (en) * 1982-10-13 1984-05-29 Hitachi, Ltd. Air flow meter
US4494406A (en) * 1982-12-23 1985-01-22 Ebtron, Inc. Means for measuring large area mass flow
US4537068A (en) * 1983-03-10 1985-08-27 Dwyer Instruments, Inc. Thermal anemometer
US4647919A (en) * 1983-06-03 1987-03-03 Beckman Instruments, Inc. Method and apparatus for monitoring liquid flow
JPH0675247B2 (ja) * 1983-11-04 1994-09-21 株式会社日立製作所 空気流量検出装置
JPH0690062B2 (ja) * 1984-07-27 1994-11-14 株式会社日立製作所 熱式流速検出装置
US4596140A (en) * 1984-09-21 1986-06-24 Tsi Incorporated Constant overheat anemometer with sensor lead wire impedance compensation
US5167153A (en) * 1986-04-23 1992-12-01 Fluid Components, Inc. Method of measuring physical phenomena using a distributed RTD
US5117216A (en) * 1986-04-23 1992-05-26 Fluid Components, Inc. Distributed RTD
US4920793A (en) * 1986-05-23 1990-05-01 Djorup Robert Sonny Directional thermal anemometer transducer
JPS6488218A (en) * 1987-09-30 1989-04-03 Hitachi Ltd Heat ray type air flowmeter
JP2631481B2 (ja) * 1987-12-08 1997-07-16 株式会社 リンテック 質量流量計とその計測方法
US5201223A (en) * 1988-05-02 1993-04-13 Fluid Components, Inc. Method of sensing fluid flow and level employing a heated extended resistance temperature sensor
US5152049A (en) * 1988-05-02 1992-10-06 Fluid Components, Inc. Method of making a heated extended resistance temperature sensor
US5134772A (en) * 1988-05-02 1992-08-04 Fluid Components, Inc. Method of making a U-shaped heated extended resistance temperature sensor
US4966033A (en) * 1988-06-15 1990-10-30 Hitachi, Ltd. Air flow metering apparatus for internal combustion engines
JPH0715395B2 (ja) * 1988-11-02 1995-02-22 株式会社日立製作所 吸入空気流量測定装置
JPH0820292B2 (ja) * 1989-04-14 1996-03-04 株式会社日立製作所 内燃機関用吸入空気流量計測装置
DE3934263A1 (de) * 1989-10-13 1991-04-25 Daimler Benz Ag Verfahren zur ermittlung der von einer brennkraftmaschine in einen brennraum angesaugten luftmasse
JPH0416323U (fr) * 1990-05-31 1992-02-10
US5438866A (en) * 1990-06-25 1995-08-08 Fluid Components, Inc. Method of making average mass flow velocity measurements employing a heated extended resistance temperature sensor
EP0522496B1 (fr) * 1991-07-08 2002-03-06 Denso Corporation Débitmètre thermique
JP2938700B2 (ja) * 1993-02-04 1999-08-23 日本碍子株式会社 熱式流量計
US5460039A (en) * 1994-07-12 1995-10-24 Bear Medical Systems, Inc. Flow sensor system
WO1998036247A1 (fr) * 1997-02-14 1998-08-20 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Composant pour capteurs de mesure d'ecoulement
JP3361968B2 (ja) * 1997-09-11 2003-01-07 三菱電機株式会社 感熱式流量計
US6038921A (en) * 1997-10-15 2000-03-21 Mcmillan Company Mass flow sensor system for fast temperature sensing responses
NL1014797C2 (nl) * 2000-03-30 2001-10-02 Berkin Bv Massadebietmeter.
JP2005140689A (ja) * 2003-11-07 2005-06-02 Mitsubishi Electric Corp 感熱式流量計および燃料制御装置
WO2005071367A1 (fr) * 2004-01-08 2005-08-04 Analog Devices, Inc. Circuit d'anemometre
US7653503B2 (en) * 2006-04-20 2010-01-26 Tao Of Systems Integration, Inc. Temperature-compensating sensor system
US20080034861A1 (en) * 2006-08-11 2008-02-14 Anasphere, Inc. Multiple-mode heated semiconductor anemometer
US9494470B2 (en) * 2014-03-20 2016-11-15 Varian Semiconductor Equipment Associates, Inc. Thermistor based measurement system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2101950A5 (fr) * 1970-08-29 1972-03-31 Bosch
FR2141312A5 (fr) * 1971-06-11 1973-01-19 Sandoz Sa
US4089214A (en) * 1976-07-05 1978-05-16 Nippon Soken, Inc. Intake air amount detecting system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1577448A (fr) * 1968-05-22 1969-08-08
US3975951A (en) * 1974-03-21 1976-08-24 Nippon Soken, Inc. Intake-air amount detecting system for an internal combustion engine
US4070908A (en) * 1976-09-28 1978-01-31 The Boeing Company Anemometer compensator linearizer
DE2649040B2 (de) * 1976-10-28 1979-12-20 Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt Konstant-Temperatur-Anemometer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2101950A5 (fr) * 1970-08-29 1972-03-31 Bosch
FR2141312A5 (fr) * 1971-06-11 1973-01-19 Sandoz Sa
US4089214A (en) * 1976-07-05 1978-05-16 Nippon Soken, Inc. Intake air amount detecting system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0241424A1 (fr) * 1986-04-08 1987-10-14 Battelle Memorial Institute Procédé pour déterminer le débit d'un fluide
CH667919A5 (fr) * 1986-04-08 1988-11-15 Battelle Memorial Institute Procede pour determiner le debit d'un fluide.

Also Published As

Publication number Publication date
FR2436974B1 (fr) 1984-06-15
DE2938322C2 (de) 1985-01-31
JPS6116026B2 (fr) 1986-04-26
GB2034482A (en) 1980-06-04
DE2938322A1 (de) 1980-04-30
US4297881A (en) 1981-11-03
JPS5543447A (en) 1980-03-27
GB2034482B (en) 1983-02-09

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