JPH0522853B2 - - Google Patents

Info

Publication number
JPH0522853B2
JPH0522853B2 JP59121518A JP12151884A JPH0522853B2 JP H0522853 B2 JPH0522853 B2 JP H0522853B2 JP 59121518 A JP59121518 A JP 59121518A JP 12151884 A JP12151884 A JP 12151884A JP H0522853 B2 JPH0522853 B2 JP H0522853B2
Authority
JP
Japan
Prior art keywords
circuit
sensing element
temperature sensing
state
supplied
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
JP59121518A
Other languages
English (en)
Japanese (ja)
Other versions
JPS61715A (ja
Inventor
Susumu Akyama
Katsunori Ito
Chiaki Mizuno
Toshitsura Yamada
Masumi Kinugawa
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.)
Denso Corp
Original Assignee
NipponDenso Co 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 NipponDenso Co Ltd filed Critical NipponDenso Co Ltd
Priority to JP59121518A priority Critical patent/JPS61715A/ja
Priority to US06/743,492 priority patent/US4669306A/en
Publication of JPS61715A publication Critical patent/JPS61715A/ja
Publication of JPH0522853B2 publication Critical patent/JPH0522853B2/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
    • G01F1/6986—Feedback or rebalancing circuits, e.g. self heated constant temperature flowmeters with pulsed heating, e.g. dynamic methods
    • 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

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)
JP59121518A 1984-06-13 1984-06-13 熱式空気流量検出装置 Granted JPS61715A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP59121518A JPS61715A (ja) 1984-06-13 1984-06-13 熱式空気流量検出装置
US06/743,492 US4669306A (en) 1984-06-13 1985-06-11 Heat-wire type air flow measurement apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59121518A JPS61715A (ja) 1984-06-13 1984-06-13 熱式空気流量検出装置

Publications (2)

Publication Number Publication Date
JPS61715A JPS61715A (ja) 1986-01-06
JPH0522853B2 true JPH0522853B2 (US07655688-20100202-C00010.png) 1993-03-30

Family

ID=14813197

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59121518A Granted JPS61715A (ja) 1984-06-13 1984-06-13 熱式空気流量検出装置

Country Status (2)

Country Link
US (1) US4669306A (US07655688-20100202-C00010.png)
JP (1) JPS61715A (US07655688-20100202-C00010.png)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4889101A (en) * 1987-11-06 1989-12-26 Siemens Aktiengesellschaft Arrangement for calculating the fuel injection quantity for an internal combustion engine
DE4022207A1 (de) * 1990-07-12 1992-01-16 Bosch Gmbh Robert Einrichtung zum freibrennen eines zu messzwecken dienenden widerstands
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
US7535235B2 (en) * 2006-09-04 2009-05-19 Fluke Corporation Integrated digital thermal air flow sensor
JP5609827B2 (ja) * 2011-09-07 2014-10-22 株式会社デンソー 空気流量測定装置
JP5477358B2 (ja) * 2011-10-31 2014-04-23 株式会社デンソー 空気流量測定装置
US10077745B2 (en) * 2016-05-26 2018-09-18 Phillips & Temro Industries Inc. Intake air heating system for a vehicle
US10221817B2 (en) * 2016-05-26 2019-03-05 Phillips & Temro Industries Inc. Intake air heating system for a vehicle

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3803913A (en) * 1970-07-06 1974-04-16 J Tracer Apparatus for determining heat-transfer rates and thus the flow rates or thermal conductivities of fluids
US3928800A (en) * 1973-06-25 1975-12-23 Sperry Rand Corp Calorimetric resistance bridges
DE2448304C2 (de) * 1974-10-10 1986-04-03 Robert Bosch Gmbh, 7000 Stuttgart Elektrisch gesteuerte Kraftstoffeinspritzanlage für Brennkraftmaschinen
US4043195A (en) * 1975-03-13 1977-08-23 Hunting Curtis J Digital thermodynamic flow-meter
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
DE3037340C2 (de) * 1979-10-03 1985-07-18 Hitachi, Ltd., Tokio/Tokyo Treiber für Hitzdraht-Luftmengenmesser
DE3130624A1 (de) * 1981-08-01 1983-02-17 Robert Bosch Gmbh, 7000 Stuttgart Luftmassenmessvorrichtung
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
JPS6187421A (ja) * 1984-10-04 1986-05-02 Nec Corp デイジタル回路

Also Published As

Publication number Publication date
US4669306A (en) 1987-06-02
JPS61715A (ja) 1986-01-06

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