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
Links
- 238000001514 detection method Methods 0.000 claims description 30
- 238000010438 heat treatment Methods 0.000 claims description 28
- 230000020169 heat generation Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000008034 disappearance Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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)
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 (US06168776-20010102-C00028.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 (US06168776-20010102-C00028.png) |
JP (1) | JPS61715A (US06168776-20010102-C00028.png) |
Families Citing this family (8)
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)
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 |
-
1984
- 1984-06-13 JP JP59121518A patent/JPS61715A/ja active Granted
-
1985
- 1985-06-11 US US06/743,492 patent/US4669306A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US4669306A (en) | 1987-06-02 |
JPS61715A (ja) | 1986-01-06 |