JPH01135318U - - Google Patents
Info
- Publication number
- JPH01135318U JPH01135318U JP2898788U JP2898788U JPH01135318U JP H01135318 U JPH01135318 U JP H01135318U JP 2898788 U JP2898788 U JP 2898788U JP 2898788 U JP2898788 U JP 2898788U JP H01135318 U JPH01135318 U JP H01135318U
- Authority
- JP
- Japan
- Prior art keywords
- flow velocity
- flow rate
- intake air
- air flow
- velocity distribution
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Measuring Volume Flow (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
第１図ないし第５図は本考案の第１の実施例を
示し、第１図は流量検出装置を設けた吸気通路の
縦断面図、第２図は曲管内を流れる順方向の流速
分布を示す縦断面図、第３図は逆方向の流速分布
を示す第２図と同様の縦断面図、第４図は吸入空
気の流速を示す特性線図、第５図は検出された吸
入空気流量を示す特性線図、第６図ないし第８図
は第２の実施例を示し、第６図は流量検出装置を
設けた吸気通路の縦断面図、第７図は絞り管内を
流れる順方向の流速分布を示す縦断面図、第８図
は逆方向の流速分布を示す第７図と同様の縦断面
図、第９図ないし第１４図は従来技術を示し、第
９図は流量検出装置を設けた吸気通路の縦断面図
、第１０図は順方向の流速分布を示す吸気通路の
縦断面図、第１１図は逆方向の流速分布を示す吸
気通路の縦断面図、第１２図は吸入空気の流速を
示す特性線図、第１３図は検出された吸入空気流
量の特性線図、第１４図は吸入空気の実流量と検
出された吸入空気流量との関係を示す特性線図で
ある。
２，３…管部材、２１，３１…ケーシング（通
路部材）、２１Ａ…湾曲部、２１Ｃ…壁面、２２
…曲管、２３，３２…熱線素子、２４，３３…ブ
ラケツト、３１Ａ…絞り部、３１Ｂ…段部、３４
…絞り管、Ｆ，Ｆ′，Ｆ３，Ｆ４，Ｆ５，Ｆ６…
流速分布、Ｖ，Ｖ３，Ｖ４，Ｖ５，Ｖ６…流速。
Figures 1 to 5 show a first embodiment of the present invention, in which Figure 1 is a longitudinal cross-sectional view of an intake passage provided with a flow rate detection device, and Figure 2 shows the forward flow velocity distribution flowing in a curved pipe. Fig. 3 is a longitudinal sectional view similar to Fig. 2 showing the flow velocity distribution in the opposite direction, Fig. 4 is a characteristic diagram showing the flow velocity of intake air, and Fig. 5 shows the detected intake air flow rate. FIGS. 6 to 8 show the second embodiment, FIG. 6 is a longitudinal sectional view of the intake passage provided with a flow rate detection device, and FIG. FIG. 8 is a vertical cross-sectional view showing the flow velocity distribution in the opposite direction; FIG. 8 is a longitudinal cross-sectional view similar to FIG. 7 showing the flow velocity distribution in the opposite direction; FIGS. FIG. 10 is a vertical cross-sectional view of the intake passage showing the flow velocity distribution in the forward direction, FIG. 11 is a vertical cross-sectional view of the intake passage showing the flow velocity distribution in the reverse direction, and FIG. FIG. 13 is a characteristic diagram showing the flow rate of air, FIG. 13 is a characteristic diagram showing the detected intake air flow rate, and FIG. 14 is a characteristic diagram showing the relationship between the actual intake air flow rate and the detected intake air flow rate. . 2, 3... Pipe member, 21, 31... Casing (passage member), 21A... Curved portion, 21C... Wall surface, 22
...Bent tube, 23, 32... Heat wire element, 24, 33... Bracket, 31A... Squeezed part, 31B... Step part, 34
... Throttle tube, F, F', F 3 , F 4 , F 5 , F 6 ...
Flow velocity distribution, V, V 3 , V 4 , V 5 , V 6 ...flow velocity.
Claims (1)
で流速分布が異なるように所定の形状をもつて形
成された通路部材と、該通路部材内で順方向の流
速が逆方向の流速よりも速くなる所定位置に配設
された吸入空気流量検出用の熱線素子とから構成
してなる吸入空気流量検出装置。 A passage member is formed in a predetermined shape so that the flow velocity distribution is different in the forward direction and the reverse direction in the middle of the intake passage of the engine, and the flow velocity in the forward direction is faster than the flow velocity in the reverse direction within the passage member. An intake air flow rate detection device comprising a hot wire element for detecting intake air flow rate arranged at a predetermined position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988028987U JPH0610260Y2 (en) | 1988-03-04 | 1988-03-04 | Intake air flow rate detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988028987U JPH0610260Y2 (en) | 1988-03-04 | 1988-03-04 | Intake air flow rate detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01135318U true JPH01135318U (en) | 1989-09-18 |
| JPH0610260Y2 JPH0610260Y2 (en) | 1994-03-16 |
Family
ID=31252797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988028987U Expired - Lifetime JPH0610260Y2 (en) | 1988-03-04 | 1988-03-04 | Intake air flow rate detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0610260Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010101704A (en) * | 2008-10-22 | 2010-05-06 | Mitsubishi Electric Corp | Flow measuring apparatus |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4527423A (en) * | 1982-02-08 | 1985-07-09 | Hitachi, Ltd. | Air flow meter for internal-combustion engine |
| JPS60218033A (en) * | 1984-04-13 | 1985-10-31 | Mitsubishi Electric Corp | Thermal flow rate detector |
| JPS63195230U (en) * | 1987-06-04 | 1988-12-15 |
-
1988
- 1988-03-04 JP JP1988028987U patent/JPH0610260Y2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4527423A (en) * | 1982-02-08 | 1985-07-09 | Hitachi, Ltd. | Air flow meter for internal-combustion engine |
| JPS60218033A (en) * | 1984-04-13 | 1985-10-31 | Mitsubishi Electric Corp | Thermal flow rate detector |
| JPS63195230U (en) * | 1987-06-04 | 1988-12-15 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010101704A (en) * | 2008-10-22 | 2010-05-06 | Mitsubishi Electric Corp | Flow measuring apparatus |
| US7926343B2 (en) | 2008-10-22 | 2011-04-19 | Mitsubishi Electric Corporation | Flow rate measuring device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0610260Y2 (en) | 1994-03-16 |