JPH02128920U - - Google Patents
Info
- Publication number
- JPH02128920U JPH02128920U JP3639789U JP3639789U JPH02128920U JP H02128920 U JPH02128920 U JP H02128920U JP 3639789 U JP3639789 U JP 3639789U JP 3639789 U JP3639789 U JP 3639789U JP H02128920 U JPH02128920 U JP H02128920U
- Authority
- JP
- Japan
- Prior art keywords
- heating resistor
- air flow
- resistor
- heat generating
- flow rate
- 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.)
- Pending
Links
- 238000010438 heat treatment Methods 0.000 claims description 8
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 claims 1
- 239000000284 extract Substances 0.000 claims 1
- 239000000446 fuel Substances 0.000 claims 1
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Landscapes
- Measuring Volume Flow (AREA)
Description
第１図は本案の実施例を示す発熱抵抗体の構成
図、第２図は発熱抵抗体の熱収支図、第３図は消
費電力の実測値と理論値の比較図、第４図は直径
による吸気温度特性の変化率（計算値）を示す図
、第５図は直径による性能変化（実測値）を示す
図、第６図はＦｅ−Ｎｉ合金の熱伝導率を示す図
、第７図は薄膜式発熱抵抗体を示す図、第８図は
板形発熱抵抗体を示す図である。
１……発熱部、２……リード線、３……支柱。
Fig. 1 is a configuration diagram of a heating resistor showing an embodiment of the present invention, Fig. 2 is a heat balance diagram of the heating resistor, Fig. 3 is a comparison between the measured value and theoretical value of power consumption, and Fig. 4 is the diameter. Figure 5 is a diagram showing the change rate of intake air temperature characteristics (calculated value) due to the diameter, Figure 6 is a diagram showing the thermal conductivity of Fe-Ni alloy, Figure 7 is a diagram showing the performance change (actual value) due to diameter. 8 is a diagram showing a thin film type heating resistor, and FIG. 8 is a diagram showing a plate type heating resistor. 1... Heat generating part, 2... Lead wire, 3... Support.
Claims (1)
量を計測する手段として、空気通路中に設置され
た発熱抵抗体と、前記発熱抵抗体を流れる電流を
制御すると伴に、前記発熱抵抗体の出力電圧を空
気流量に対応した信号として取り出す駆動回路と
からなる熱線式空気流量計において、 (1) 前記発熱抵抗体の直径をφ０．５〜φ０．
８とする。 (2) 前記発熱抵抗体のリード線の部材が負の熱
伝導率温度係数を有する材料から成る。 (3) 前記発熱抵抗体のリード線の部材がＦｅＮ
ｉから成る。 ことを特徴とする熱線式空気流量計。[Claims for Utility Model Registration] As a means for measuring the intake air flow rate of an electronically controlled fuel injection device of an internal combustion engine, there is provided a heating resistor installed in an air passage, and a means for controlling the current flowing through the heating resistor. , a hot wire air flowmeter comprising a drive circuit that extracts the output voltage of the heat generating resistor as a signal corresponding to the air flow rate, (1) the diameter of the heat generating resistor is set to φ0.5 to φ0.
8. (2) The lead wire member of the heating resistor is made of a material having a negative temperature coefficient of thermal conductivity. (3) The lead wire of the heating resistor is made of FeN.
Consists of i. A hot wire air flow meter characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3639789U JPH02128920U (en) | 1989-03-31 | 1989-03-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3639789U JPH02128920U (en) | 1989-03-31 | 1989-03-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02128920U true JPH02128920U (en) | 1990-10-24 |
Family
ID=31542591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3639789U Pending JPH02128920U (en) | 1989-03-31 | 1989-03-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02128920U (en) |
-
1989
- 1989-03-31 JP JP3639789U patent/JPH02128920U/ja active Pending
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