JP5010877B2 - 熱式ガス流量測定装置 - Google Patents
熱式ガス流量測定装置 Download PDFInfo
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- JP5010877B2 JP5010877B2 JP2006234855A JP2006234855A JP5010877B2 JP 5010877 B2 JP5010877 B2 JP 5010877B2 JP 2006234855 A JP2006234855 A JP 2006234855A JP 2006234855 A JP2006234855 A JP 2006234855A JP 5010877 B2 JP5010877 B2 JP 5010877B2
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- heating resistor
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- 238000011144 upstream manufacturing Methods 0.000 claims description 19
- 239000012530 fluid Substances 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 description 53
- 230000010349 pulsation Effects 0.000 description 31
- 230000000694 effects Effects 0.000 description 11
- 238000005259 measurement Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 230000007423 decrease Effects 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 3
- 230000020169 heat generation Effects 0.000 description 3
- 230000001052 transient effect Effects 0.000 description 3
- 238000005119 centrifugation Methods 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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- Measuring Volume Flow (AREA)
Description
Claims (5)
- 主通路を流れる流体の一部を取り込む副通路と、前記副通路内に設置され流体の流量を検出する熱式センサ素子と、を備え、前記副通路に前記熱式センサよりも上流側に少なくとも90°以上の迂回部を設けた熱式ガス流量測定装置において、
前記副通路の出口部に少なくとも1つの副通路内の流れに対して障害となる形状を設け、
前記形状は、前記出口部の前記迂回部の外周側の壁面に、前記外周側の壁面から1mmよりも高い高さを持つ形状であり、
前記形状により圧力損失を増加させた熱式ガス流量測定装置。 - 請求項1において前記副通路から流出する穴の側壁を一部ふさいだ形状により、副通路内の圧力損失を増加させたことを特徴とする熱式ガス流量測定装置。
- 請求項1において前記熱式センサ素子よりも下流側に少なくとも1つの圧力損失増加のための障害物を持つことを特徴とする熱式ガス流量測定装置。
- 請求項1乃至3のいずれかにおいて、前記形状は段差であることを特徴とする熱式ガス流量測定装置。
- 上記請求項1〜4を用いた内燃機関制御システム。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP2006234855A JP5010877B2 (ja) | 2006-08-31 | 2006-08-31 | 熱式ガス流量測定装置 |
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JP2006234855A JP5010877B2 (ja) | 2006-08-31 | 2006-08-31 | 熱式ガス流量測定装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008058128A JP2008058128A (ja) | 2008-03-13 |
JP5010877B2 true JP5010877B2 (ja) | 2012-08-29 |
Family
ID=39241037
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2006234855A Active JP5010877B2 (ja) | 2006-08-31 | 2006-08-31 | 熱式ガス流量測定装置 |
Country Status (1)
Country | Link |
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JP (1) | JP5010877B2 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107076590B (zh) * | 2014-09-26 | 2019-12-24 | 日立汽车系统株式会社 | 热式流量计 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57105551A (en) * | 1980-12-22 | 1982-07-01 | Japan Electronic Control Syst Co Ltd | Suction air system of internal combustion engine cum fuel injector |
JP3356990B2 (ja) * | 1998-06-10 | 2002-12-16 | 株式会社日立製作所 | 発熱抵抗体式空気流量測定装置 |
JP2001059759A (ja) * | 1999-08-24 | 2001-03-06 | Hitachi Ltd | 発熱抵抗式流量測定装置 |
WO2006003717A1 (ja) * | 2004-06-30 | 2006-01-12 | Hitachi, Ltd. | 空気流量測定装置 |
JP4512499B2 (ja) * | 2005-02-14 | 2010-07-28 | 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 |
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2006
- 2006-08-31 JP JP2006234855A patent/JP5010877B2/ja active Active
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