JPH0216453B2 - - Google Patents

Info

Publication number
JPH0216453B2
JPH0216453B2 JP56061527A JP6152781A JPH0216453B2 JP H0216453 B2 JPH0216453 B2 JP H0216453B2 JP 56061527 A JP56061527 A JP 56061527A JP 6152781 A JP6152781 A JP 6152781A JP H0216453 B2 JPH0216453 B2 JP H0216453B2
Authority
JP
Japan
Prior art keywords
voltage
hot wire
air flow
control
measuring device
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.)
Expired - Lifetime
Application number
JP56061527A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5714719A (en
Inventor
Ratsupusu Peetaa
Doryuusu Ururitsuhi
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of JPS5714719A publication Critical patent/JPS5714719A/ja
Publication of JPH0216453B2 publication Critical patent/JPH0216453B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • G01F1/6983—Feedback or rebalancing circuits, e.g. self heated constant temperature flowmeters adapted for burning-off deposits

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)
  • Combined Controls Of Internal Combustion Engines (AREA)
JP6152781A 1980-06-18 1981-04-24 Air flow rate measuring apparatus for internal combustion engine Granted JPS5714719A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19803022685 DE3022685A1 (de) 1980-06-18 1980-06-18 Einrichtung zur durchflussmassenmessung bei einer brennkraftmaschine

Publications (2)

Publication Number Publication Date
JPS5714719A JPS5714719A (en) 1982-01-26
JPH0216453B2 true JPH0216453B2 (US06168776-20010102-C00028.png) 1990-04-17

Family

ID=6104829

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6152781A Granted JPS5714719A (en) 1980-06-18 1981-04-24 Air flow rate measuring apparatus for internal combustion engine

Country Status (3)

Country Link
US (1) US4420971A (US06168776-20010102-C00028.png)
JP (1) JPS5714719A (US06168776-20010102-C00028.png)
DE (1) DE3022685A1 (US06168776-20010102-C00028.png)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3227807A1 (de) * 1982-07-24 1984-01-26 Robert Bosch Gmbh, 7000 Stuttgart Verfahren zur verhinderung einer beschaedigung eines in einem stroemungsquerschnitt angeordneten temperaturabhaengigen widerstandes durch ueberhitzung und luftmassenmessvorrichtung zur durchfuehrung des verfahrens
JPS60216047A (ja) * 1984-04-11 1985-10-29 Nippon Denso Co Ltd 内燃機関の制御装置
US4565091A (en) * 1984-04-20 1986-01-21 Nippondenso Co., Ltd. Apparatus for measuring the quantity of airflow passing through an intake passage of an engine
US4637251A (en) * 1986-02-18 1987-01-20 Allied Corporation Symmetrical bridge circuit for measuring mass air flow
JPS62155318U (US06168776-20010102-C00028.png) * 1986-03-25 1987-10-02
KR900004074B1 (ko) * 1986-04-22 1990-06-11 미쓰비시전기주식회사 연료제어장치
US4854155A (en) * 1988-10-19 1989-08-08 Mine Safety Appliances Company Combustible gas detector having catalytic sensor stabilizing network
DE4332412C1 (de) * 1993-09-23 1994-12-01 Siemens Ag Verfahren und Schaltungsanordnung zum Schutz eines beheizten temperaturabhängigen Sensorwiderstands vor Überhitzung
JP3216001B2 (ja) * 1995-08-08 2001-10-09 株式会社ユニシアジェックス 内燃機関の感温式流量検出装置
AT503955B1 (de) * 2006-12-21 2008-02-15 Vaillant Austria Gmbh Strömungssensor und verfahren zur überprüfung und zum betrieb eines solchen strömungssensors
DE102006058425A1 (de) * 2006-12-08 2008-06-19 Heraeus Sensor Technology Gmbh Abgasrückführung mit einem Anemometer
US7685875B2 (en) * 2007-10-23 2010-03-30 Therm-O-Disc, Incorporated Fluid flow rate sensor and method of operation

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2457650A1 (de) * 1974-12-06 1976-06-10 Bosch Gmbh Robert Einrichtung zur ueberpruefung von gasen
DE2750050C2 (de) * 1977-11-09 1983-12-08 Robert Bosch Gmbh, 7000 Stuttgart Einrichtung zur Luftmengenmessung
DE2927378A1 (de) * 1979-07-06 1981-01-29 Bosch Gmbh Robert Einrichtung zum freibrennen eines zu messzwecken dienenden widerstandes
DE2929434A1 (de) * 1979-07-20 1981-02-05 Bosch Gmbh Robert Einrichtung zum freibrennen eines widerstandes, insbesondere eines hitzdrahtes in einem luftmassenmesser einer brennkraftmaschine

Also Published As

Publication number Publication date
DE3022685A1 (de) 1982-01-07
DE3022685C2 (US06168776-20010102-C00028.png) 1988-03-17
US4420971A (en) 1983-12-20
JPS5714719A (en) 1982-01-26

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