WO2013042458A1 - 空気物理量検出装置 - Google Patents
空気物理量検出装置 Download PDFInfo
- Publication number
- WO2013042458A1 WO2013042458A1 PCT/JP2012/069429 JP2012069429W WO2013042458A1 WO 2013042458 A1 WO2013042458 A1 WO 2013042458A1 JP 2012069429 W JP2012069429 W JP 2012069429W WO 2013042458 A1 WO2013042458 A1 WO 2013042458A1
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- WO
- WIPO (PCT)
- Prior art keywords
- physical quantity
- quantity detection
- electronic circuit
- air
- detection device
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10373—Sensors for intake systems
-
- 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
- G01F1/684—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10373—Sensors for intake systems
- F02M35/10393—Sensors for intake systems for characterising a multi-component mixture, e.g. for the composition such as humidity, density or viscosity
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/14—Casings, e.g. of special material
Definitions
- the present invention relates to a physical quantity detection device for measuring a physical quantity, and more particularly to an air physical quantity detection apparatus suitable for measuring a physical quantity related to intake air of an internal combustion engine.
- a measurement chamber communicating with at least one of a main air passage and a sub air passage is separated from a passage wall of the main air passage rather than the sub air passage.
- Some are configured to be less susceptible to environmental changes such as temperature changes by being arranged on the center side of the passage.
- the surface temperature of the structure support body and the sensor connected thereto changes with a delay when the temperature of the intake air suddenly changes. Has characteristics.
- An object of the present invention is to prevent condensation of a detection element that detects an air physical quantity.
- an air physical quantity detection device of the present invention includes a housing member integrally including a connector for performing input / output with the outside and a connector terminal member, an electronic circuit board mounted on the housing member, An air physical quantity detection element provided on the electronic circuit board and capable of detecting a physical quantity of air, and attached to a mounting hole provided in advance in a part of a main passage through which air flows using a part of the housing member
- the electronic circuit board is mounted with an electronic component constituting an electronic circuit on a surface opposite to a surface on which the air physical quantity detection element is provided, and the housing member is A communication hole for communicating the inside and the outside of the main passage is formed, the electronic circuit board is separated into two through holes, and the air physical quantity detection is performed.
- Mounted on the housing member so as to face the surface of the child side provided in the main aisle.
- the structure of the physical quantity detection device can efficiently absorb the heat generated by the internal combustion engine, it is possible to prevent condensation of the detection element that detects the air physical quantity.
- the physical quantity detection device 5 includes an electronic circuit board 10 in which a physical quantity detection element 9 is mounted in a housing member 8 in which a connector 6 and a connector terminal 7 are integrally molded.
- a circuit protection layer is formed by directly casting a resin or the like.
- 30 is generally formed by protecting and fixing the electronic circuit board 10.
- the electronic circuit board 10 is mounted with other circuits on the surface opposite to the surface on which the physical quantity detection element 9 is mounted.
- a communication hole 13 is formed in the housing member 8 so as to communicate the inside and the outside of the main passage, and the electronic circuit board 10 is located at a position where the communication hole 13 is separated into two, and the physical quantity detection element 9. Is mounted so as to face the main passage 1 side.
- the physical quantity detection element 9 used by directly exposing to the intake air and the other circuit part used with completely sealed protection are mounted on the opposite surfaces, so that the physical quantity detection element 9 is directly exposed to the intake air. It is possible to realize the structure and the structure of separating and sealing the circuit parts that need to be protected from dirt, corrosion, and mechanical protection with a simple structure. As described above, this is realized simply by providing the circuit protection layer 30 here.
- the entire size of the electronic circuit board 10 can be reduced, which reduces the size of the physical quantity detection device 5 itself.
- the mounting position of the electronic circuit board 10 on which the physical quantity detection element 9 is mounted is mounted so as to be positioned outside the inner wall surface inside the main passage 1. Furthermore, the electronic circuit board 10 is installed so as to be substantially parallel to the axial direction of the intake pipe formed by the intake pipe constituting member 2.
- the mounting position of the electronic circuit board 10 can be set to a position where the heat generated by the engine can be efficiently absorbed, and in most of the time during which the physical quantity detection device 5 operates, “intake air temperature ⁇ the structure of the device” And the physical quantity detection element 9 temperature ”can be created. For example, even when the temperature or humidity of the intake air changes abruptly, it is possible to prevent condensation on the physical quantity detection element 9 portion.
- a groove 15 is formed in a part of the mounting surface of the electronic circuit board 10 on the housing member 8 so as to surround the whole communication hole 13, and an electronic circuit board is applied by applying a sealant 16 to the groove 15 portion. 10 is installed. As a result, the communication hole 13 is completely sealed and separated inside and outside the intake pipe.
- the material that forms the circuit protective layer 30 can be used by pouring a material that is liquid in an uncured state, and the physical quantity detection element 9 is directly exposed to the intake air, and other circuit portions are sealed.
- the configuration of protection can be realized with a simple manufacturing method and structure.
- a glass epoxy board 31 is used for the electronic circuit board 10, the physical quantity detection element 9 is mounted on the main path 1 side, and the microcomputer 17 for processing and converting the signal of the physical quantity detection element 9 on the opposite side is provided.
- Chip components 18 such as capacitors and resistors are mounted.
- the microcomputer 17 is a component packaged with a resin. By combining with the glass epoxy substrate 31, it is easy to match the linear expansion coefficients of the resin material and the substrate material constituting the microcomputer 17 and the durability against a thermal shock cycle is improved. In addition, a highly reliable sensor signal can be supplied over a long period of time.
- the through-hole 19 is provided in the electronic circuit board 10, and interlayer circuits are connected through the through-hole 19.
- the plate structure is used, and the through hole 19 is arranged outside the area where the sealant 16 is applied.
- the intake pipe constituting member 2 constituting the main passage 1 is provided with a sensor mounting hole 3 in a part thereof, and a humidity detecting device 33 is attached and fixed via the seal member 4.
- the humidity detection device 33 includes an electronic circuit board 10 in which the humidity detection element 32 is mounted on a housing member 8 in which the connector 6 and the connector terminal 7 are integrally molded.
- the circuit protection layer is formed by directly casting resin or the like.
- 30 is generally formed by protecting and fixing the electronic circuit board 10.
- the electronic circuit board 10 has other circuits mounted on the surface opposite to the surface on which the humidity detecting element 32 is mounted.
- the electrical connection between the connector terminal 7 and the electronic circuit board 10 is performed by a metal wire 12, and input / output with the outside is enabled via the connector 6.
- a communication hole 13 is formed in the housing member 8 so as to communicate the inside and the outside of the main passage.
- the electronic circuit board 10 is located at a position where the communication hole 13 is separated into two, and the humidity detecting element 32 is provided. It is mounted so as to face the main passage 1 side.
- the mounting position of the electronic circuit board 10 on which the humidity detecting element 32 is mounted is mounted so as to be positioned outside the inner wall surface inside the main passage 1. Furthermore, the electronic circuit board 10 is installed so as to be substantially parallel to the axial direction of the intake pipe formed by the intake pipe constituting member 2.
- the humidity detection device 33 can efficiently absorb the heat generated by the engine. In most of the time during which the humidity detection device 33 operates, “intake air temperature ⁇ structure of the device and humidity detection element 32”. The relationship of “temperature” can be created, and even when the temperature and humidity of the intake air change abruptly, it is possible to prevent the condensation of the 32 parts of the humidity detection element.
- this configuration is highly effective when applied to the humidity detector 33.
- the intake pipe constituting member 2 constituting the main passage 1 is provided with a sensor mounting hole 3 in a part thereof, and a humidity detecting device 33 is attached via the seal member 4.
- the humidity detection device 33 includes the electronic circuit board 10 in which the humidity detection element 32 is mounted on the housing member 8 in which the connector 6 and the connector terminal 7 are integrally molded.
- a communication hole 13 is provided in advance in the housing member 8 so as to communicate the inside and the outside of the main passage, and a groove 15 is formed in the housing member 8 so as to surround the communication hole 13 as a whole.
- the electronic circuit board 10 is mounted by applying the sealant 16 to the groove 15 portion. As a result, the communication hole 13 is completely sealed and separated inside and outside the intake pipe.
- the electronic circuit board 10 is formed only by the sealant 16 in order to have a structure capable of withstanding a sudden positive pressure generated in the main passage 1 generated by a backfire or the like.
- the electronic circuit board 10 is protected and fixed by, for example, directly casting a resin instead of being fixed to the housing member 8, or as shown in FIG.
- the cover member 35 may be bonded and fixed to the housing member 8 after the above protection.
- the humidity detecting element 32 and other circuits are respectively mounted on the opposite surfaces of the electronic circuit board 10, the entire size of the electronic circuit board 10 can be reduced, and this reduces the size of the humidity detecting device 33 itself. Greatly contribute to
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Measuring Volume Flow (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Abstract
Description
2 吸気管構成部材
3 装着穴
4 シール部材
5 物理量検出装置
6 コネクタ
7 コネクタ端子
8 ハウジング部材
9 物理量検出素子
10 電子回路基板
12 金属ワイヤ
13 連通穴
15 溝
16 封止剤
17 マイコン
18 チップ部品
19 スルーホール
30 回路保護層
31 ガラスエポキシ基板
32 湿度検出素子
33 湿度検出装置
34 ゲル剤
35 カバー部材
Claims (7)
- 外部との入出力を行うコネクタ及びコネクタ端子部材を一体で備えたハウジング部材と、前記ハウジング部材に搭載された電子回路基板と、前記電子回路基板に設けられ空気の物理量を検出可能な空気物理量検出素子と、を有し、空気が流れる主通路の一部に予め設けられた装着穴に前記ハウジング部材の一部を用いて取り付け固定される空気物理量検出装置において、
前記電子回路基板は、前記空気物理量検出素子が設けられている面とは反対側の面に電子回路を構成する電子部品が実装されており、
前記ハウジング部材は、前記主通路の内部と外部を連通する連通穴が形成されており、
前記電子回路基板を、前記連通穴を2つに分離するように、かつ、前記空気物理量検出素子が設けられた側の面を主通路側に面するように前記ハウジング部材に搭載したことを特徴とする空気物理量検出装置。 - 請求項1に記載の空気物理量検出装置において、
前記電子回路基板は、主通路内部の内壁面よりも外側の位置で前記ハウジング部材に搭載されていることを特徴とする空気物理量検出装置。 - 請求項2に記載の空気物理量検出装置において、
前記電子回路基板の前記空気物理量検出素子が設けられている面には、前記空気物理量検出素子を囲むように溝が設けられ、
前記溝に封止剤を塗布することで前記ハウジング部材に前記電子回路基板を装着したことを特徴とする空気物理量検出装置。 - 請求項3に記載の空気物理量検出装置において、
前記電子回路基板は、ガラスエポキシ基板であることを特徴とする空気物理量検出装置。 - 請求項4に記載の空気物理量検出装置において、
前記電子回路基板は、スルーホールが設けられており、
前記スルーホールの位置は、前記溝の外側に設けたことを特徴とする空気物理量検出装置。 - 請求項1乃至請求項5のいずれかに記載の空気物理量検出装置において、
前記空気物理量検出素子は、湿度検出素子であることを特徴とする空気物理量検出装置。 - 請求項1に記載の空気物理量検出装置において、
前記電子回路基板により分離された連通穴のうち前記主通路に面しないもう一方の側の連通穴は、封止構造を有することを特徴とする空気物理量検出装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201280040013.0A CN103764978A (zh) | 2011-09-20 | 2012-07-31 | 空气物理量检测装置 |
DE112012003916.5T DE112012003916T8 (de) | 2011-09-20 | 2012-07-31 | Messvorrichtung für physikalische Größen der Luft |
US14/240,946 US20140216146A1 (en) | 2011-09-20 | 2012-07-31 | Air physical quantity sensing device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011-204051 | 2011-09-20 | ||
JP2011204051A JP2013064367A (ja) | 2011-09-20 | 2011-09-20 | 空気物理量検出装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013042458A1 true WO2013042458A1 (ja) | 2013-03-28 |
Family
ID=47914238
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2012/069429 WO2013042458A1 (ja) | 2011-09-20 | 2012-07-31 | 空気物理量検出装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20140216146A1 (ja) |
JP (1) | JP2013064367A (ja) |
CN (1) | CN103764978A (ja) |
DE (1) | DE112012003916T8 (ja) |
WO (1) | WO2013042458A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018193743A1 (ja) * | 2017-04-21 | 2018-10-25 | 日立オートモティブシステムズ株式会社 | 湿度測定装置 |
WO2019073771A1 (ja) * | 2017-10-10 | 2019-04-18 | 日立オートモティブシステムズ株式会社 | 湿度測定装置 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9970396B2 (en) * | 2013-12-10 | 2018-05-15 | Hitachi Automotive Systems, Ltd. | Intake air humidity measurement device for an internal combustion engine |
DE102015102383A1 (de) * | 2015-02-19 | 2016-08-25 | Sensus Spectrum Llc | Zählergehäuse und Fluidzähler mit Zählergehäuse |
CN105937926A (zh) * | 2016-07-21 | 2016-09-14 | 四川港通医疗设备集团股份有限公司 | 一种气流传感装置 |
JP7244309B2 (ja) | 2019-03-11 | 2023-03-22 | 株式会社ニチレイフーズ | 組合せ計量システム、組合せ計量方法及び組合せ計量プログラム |
US11662109B2 (en) | 2019-06-05 | 2023-05-30 | Carrier Corporation | Enclosure for gas detector |
Citations (5)
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JPH0592706U (ja) * | 1992-05-19 | 1993-12-17 | ティーディーケイ株式会社 | 湿度検出装置 |
JP2001004420A (ja) * | 1999-06-21 | 2001-01-12 | Ngk Spark Plug Co Ltd | 流量及び流速測定装置 |
JP2008175711A (ja) * | 2007-01-19 | 2008-07-31 | Honda Motor Co Ltd | ガスセンサ |
JP2008541087A (ja) * | 2005-05-10 | 2008-11-20 | センサータ テクノロジーズ ホランド ビー ヴイ | センサーモジュールパッケージ |
JP2010151567A (ja) * | 2008-12-25 | 2010-07-08 | Hitachi Automotive Systems Ltd | インダクタンス式回転角度検出装置とその製造方法、及びそれを備えたモータ駆動式の絞り弁制御装置 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JP4000994B2 (ja) * | 2002-11-25 | 2007-10-31 | 株式会社日立製作所 | 内燃機関用スロットルボディ及び吸気装置 |
CN101263386A (zh) * | 2005-05-10 | 2008-09-10 | 森萨塔科技荷兰有限公司 | 传感器模块封装 |
JP5577198B2 (ja) * | 2010-09-08 | 2014-08-20 | 日立オートモティブシステムズ株式会社 | 気体流量測定装置 |
JP5779471B2 (ja) * | 2011-10-06 | 2015-09-16 | 日立オートモティブシステムズ株式会社 | 湿度検出装置 |
JP5913906B2 (ja) * | 2011-10-28 | 2016-04-27 | 日立オートモティブシステムズ株式会社 | 湿度検出装置 |
-
2011
- 2011-09-20 JP JP2011204051A patent/JP2013064367A/ja active Pending
-
2012
- 2012-07-31 WO PCT/JP2012/069429 patent/WO2013042458A1/ja active Application Filing
- 2012-07-31 DE DE112012003916.5T patent/DE112012003916T8/de not_active Expired - Fee Related
- 2012-07-31 US US14/240,946 patent/US20140216146A1/en not_active Abandoned
- 2012-07-31 CN CN201280040013.0A patent/CN103764978A/zh active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0592706U (ja) * | 1992-05-19 | 1993-12-17 | ティーディーケイ株式会社 | 湿度検出装置 |
JP2001004420A (ja) * | 1999-06-21 | 2001-01-12 | Ngk Spark Plug Co Ltd | 流量及び流速測定装置 |
JP2008541087A (ja) * | 2005-05-10 | 2008-11-20 | センサータ テクノロジーズ ホランド ビー ヴイ | センサーモジュールパッケージ |
JP2008175711A (ja) * | 2007-01-19 | 2008-07-31 | Honda Motor Co Ltd | ガスセンサ |
JP2010151567A (ja) * | 2008-12-25 | 2010-07-08 | Hitachi Automotive Systems Ltd | インダクタンス式回転角度検出装置とその製造方法、及びそれを備えたモータ駆動式の絞り弁制御装置 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018193743A1 (ja) * | 2017-04-21 | 2018-10-25 | 日立オートモティブシステムズ株式会社 | 湿度測定装置 |
JPWO2018193743A1 (ja) * | 2017-04-21 | 2020-01-16 | 日立オートモティブシステムズ株式会社 | 湿度測定装置 |
US11105292B2 (en) | 2017-04-21 | 2021-08-31 | Hitachi Automotive Systems, Ltd. | Humidity measurement device |
WO2019073771A1 (ja) * | 2017-10-10 | 2019-04-18 | 日立オートモティブシステムズ株式会社 | 湿度測定装置 |
Also Published As
Publication number | Publication date |
---|---|
DE112012003916T5 (de) | 2014-07-03 |
JP2013064367A (ja) | 2013-04-11 |
US20140216146A1 (en) | 2014-08-07 |
DE112012003916T8 (de) | 2014-08-14 |
CN103764978A (zh) | 2014-04-30 |
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