DE69940871D1 - Luftströmungsmessvorrichtung - Google Patents

Luftströmungsmessvorrichtung

Info

Publication number
DE69940871D1
DE69940871D1 DE69940871T DE69940871T DE69940871D1 DE 69940871 D1 DE69940871 D1 DE 69940871D1 DE 69940871 T DE69940871 T DE 69940871T DE 69940871 T DE69940871 T DE 69940871T DE 69940871 D1 DE69940871 D1 DE 69940871D1
Authority
DE
Germany
Prior art keywords
air flow
measuring device
flow measuring
air
measuring
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
DE69940871T
Other languages
English (en)
Inventor
Chihiro Kobayashi
Shinya Igarashi
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
Hitachi Automotive Systems Engineering Co Ltd
Original Assignee
Hitachi Ltd
Hitachi Car Engineering 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 Hitachi Ltd, Hitachi Car Engineering Co Ltd filed Critical Hitachi Ltd
Application granted granted Critical
Publication of DE69940871D1 publication Critical patent/DE69940871D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G01F1/6965—Circuits therefor, e.g. constant-current flow meters comprising means to store calibration data for flow signal calculation or correction

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
DE69940871T 1998-05-27 1999-05-27 Luftströmungsmessvorrichtung Expired - Lifetime DE69940871D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14579698A JP3421245B2 (ja) 1998-05-27 1998-05-27 発熱抵抗体式空気流量測定装置

Publications (1)

Publication Number Publication Date
DE69940871D1 true DE69940871D1 (de) 2009-06-25

Family

ID=15393361

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69940871T Expired - Lifetime DE69940871D1 (de) 1998-05-27 1999-05-27 Luftströmungsmessvorrichtung

Country Status (4)

Country Link
US (1) US6520009B2 (de)
EP (1) EP0961105B1 (de)
JP (1) JP3421245B2 (de)
DE (1) DE69940871D1 (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4130877B2 (ja) 2002-06-19 2008-08-06 株式会社日立製作所 流量計及び流量計システム
JP3808038B2 (ja) 2003-01-14 2006-08-09 株式会社日立製作所 周波数出力型熱線式流量計
JP4223915B2 (ja) 2003-10-01 2009-02-12 株式会社日立製作所 熱式流量計及び制御システム
JP5073949B2 (ja) 2006-02-02 2012-11-14 日立オートモティブシステムズ株式会社 流量測定装置
JP2010131264A (ja) * 2008-12-05 2010-06-17 Nippon Koden Corp 呼吸気情報測定センサ
JP5284864B2 (ja) * 2009-04-30 2013-09-11 日立オートモティブシステムズ株式会社 熱式空気流量計
DE102010014599A1 (de) * 2010-04-09 2010-11-18 Continental Automotive Gmbh Luftmassenmesser
JP2013024710A (ja) * 2011-07-20 2013-02-04 Denso Corp 空気流量測定装置
DE102013215921A1 (de) * 2013-08-12 2015-03-05 Continental Automotive Gmbh Luftmassenmesser
JP6106559B2 (ja) * 2013-09-02 2017-04-05 日立オートモティブシステムズ株式会社 熱式流量センサ
JP6506681B2 (ja) * 2015-11-13 2019-04-24 日立オートモティブシステムズ株式会社 空気流量測定装置
US10578062B2 (en) * 2016-01-13 2020-03-03 NJK Precision LLC Mass airflow sensor signal processing method
JP6177384B1 (ja) 2016-05-26 2017-08-09 三菱電機株式会社 熱式空気流量計
JP2019128308A (ja) * 2018-01-26 2019-08-01 株式会社デンソー 空気流量測定装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5597425U (de) * 1978-12-22 1980-07-07
US4794794A (en) * 1986-10-30 1989-01-03 Djorup Robert Sonny Thermal anemometer
KR910002791B1 (ko) 1987-01-23 1991-05-04 미쓰비시 뎅끼 가부시기가이샤 에어프로센서용 입력처리회로
JP2682348B2 (ja) * 1992-09-17 1997-11-26 株式会社日立製作所 空気流量計及び空気流量検出方法
WO1995034753A1 (fr) * 1994-06-13 1995-12-21 Hitachi, Ltd. Dispositif et procede de mesure d'un debit d'air
US5681989A (en) 1994-11-18 1997-10-28 Hitachi, Ltd. Intake air amount measuring apparatus for internal combustion engines
JP3141762B2 (ja) * 1995-12-13 2001-03-05 株式会社日立製作所 空気流量計測装置及び空気流量計測方法

Also Published As

Publication number Publication date
EP0961105B1 (de) 2009-05-13
JP3421245B2 (ja) 2003-06-30
EP0961105A1 (de) 1999-12-01
US6520009B2 (en) 2003-02-18
JPH11337382A (ja) 1999-12-10
US20020056319A1 (en) 2002-05-16

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Legal Events

Date Code Title Description
8328 Change in the person/name/address of the agent

Representative=s name: MERH-IP MATIAS ERNY REICHL HOFFMANN, 80336 MUENCHE

8328 Change in the person/name/address of the agent

Representative=s name: BEETZ & PARTNER PATENTANWAELTE, 80538 MUENCHEN

8364 No opposition during term of opposition