CN204479239U - Air inlet pressure sensor - Google Patents
Air inlet pressure sensor Download PDFInfo
- Publication number
- CN204479239U CN204479239U CN201520212358.0U CN201520212358U CN204479239U CN 204479239 U CN204479239 U CN 204479239U CN 201520212358 U CN201520212358 U CN 201520212358U CN 204479239 U CN204479239 U CN 204479239U
- Authority
- CN
- China
- Prior art keywords
- air intake
- intake opening
- wiring board
- pressure transducer
- air inlet
- 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 - Fee Related
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- Measuring Fluid Pressure (AREA)
Abstract
The utility model relates to a kind of sensor, what be specifically related to is a kind of air inlet pressure sensor.This kind of air inlet pressure sensor, it is characterized in that comprising shell, pressure transducer and wiring board, described shell side has air intake opening, described air intake opening is to downward-extension, described air intake opening is arranged with admission line, the junction of described admission line and air intake opening is provided with O-ring seal, described wiring board is welded on outer casing inner wall and forms closed cavity, described closed cavity communicates with air intake opening, described pressure transducer is welded on the wiring board back side, described pressure transducer is just arranged air inlet, and described wiring board and pressure transducer junction are filled with one deck resin material.Pressure transducer and wiring board are packaged into an entirety by the utility model, and profile is little, not fragile in process of production, and not perishable in venting process, reliability is high.Be provided with O-ring seal between admission line and air intake opening, not easily leak gas in venting process, improve accuracy.
Description
Technical field
The utility model relates to a kind of sensor, what be specifically related to is a kind of air inlet pressure sensor.
Background technology
Air inlet pressure sensor is a kind of automobile sensor, and when being used to test engine work, the absolute pressure of draft tube, by a series of signal process, calculates the sensor that air inflow in draft tube is how many.Air inlet pressure sensor using vehicle engine electronic control system fuel injection system.When car engine electronic controls fuel injection system work, engine charge pressure changes with the change of charge flow rate, when throttle opening increases (namely charge flow rate increases), admission pressure raises, diaphragm stress increases, and the change in resistance amount of force sensing resistance increases, and bridge output voltage raises, amplify after process through integrated hybrid circuit, the signal voltage of sensor input ECU (Electrical Control Unit) ECU will raise.Otherwise, when throttle opening from large to small (i.e. charge flow rate reduce) time, admission pressure reduces, and diaphragm stress reduces, and the change in resistance amount of force sensing resistance reduces, and bridge voltage output voltage reduces, and the signal voltage of input ECU reduces.The air inlet pressure sensor of prior art, equipment investment is many, and cost is high, and signal processing and temperature compensation part-structure are complicated, assembly process is more, and debugging is large, and the sensor that particularly structure is less cannot hold lower existing electronic circuit.
Utility model content
In view of current known technology Problems existing, the technical problems to be solved in the utility model is the air inlet pressure sensor being to provide a kind of entirety to install in automotive air intake pipe, this air inlet pressure sensor, it is characterized in that comprising shell, pressure transducer and wiring board, described shell side has air intake opening, described air intake opening is to downward-extension, described air intake opening is arranged with admission line, the junction of described admission line and air intake opening is provided with O-ring seal, described wiring board is welded on outer casing inner wall and forms closed cavity, described closed cavity communicates with air intake opening, described pressure transducer is welded on the wiring board back side, described pressure transducer is just arranged air inlet, described wiring board and pressure transducer junction are filled with one deck resin material.
Pressure transducer and wiring board are packaged into an entirety by the utility model, and profile is little, not fragile in process of production, and not perishable in venting process, reliability is high.Be provided with O-ring seal between admission line and air intake opening, not easily leak gas in venting process, improve accuracy.Compared with prior art, the utility model has substantive distinguishing features and progress.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in the figure, this air inlet pressure sensor, comprise shell 1, pressure transducer 2 and wiring board 3, shell 1 side has air intake opening 4, described air intake opening 4, to downward-extension, described air intake opening 4 is arranged with admission line 5, and described admission line 5 is provided with O-ring seal 6 with the junction of air intake opening 4, prevent from leaking gas in venting process, improve sealing.Described wiring board 3 is welded on outer casing inner wall 11 and forms closed cavity 7, described closed cavity 7 communicates with air intake opening 4, described pressure transducer 2 is welded on wiring board 3 back side, described pressure transducer 2 is just arranged air inlet 4, described wiring board 3 is filled with one deck resin material with pressure transducer 2 junction, prevents from damaging.Wiring board 3 and outer casing inner wall 11 contact site all seal with silica gel 8, improve sealing further, prevent gas leakage.
Claims (1)
1. air inlet pressure sensor, it is characterized in that comprising shell (1), pressure transducer (2) and wiring board (3), described shell (1) side has air intake opening (4), described air intake opening (4) is to downward-extension, described air intake opening (4) is arranged with admission line (5), described admission line (5) is provided with O-ring seal (6) with the junction of air intake opening (4), described wiring board (3) is welded on outer casing inner wall (11) and forms closed cavity (7), described closed cavity (7) communicates with air intake opening (4), described pressure transducer (2) is welded on wiring board (3) back side, described pressure transducer (2) is just arranged air inlet (4), described wiring board (3) and pressure transducer (2) junction are filled with one deck resin material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520212358.0U CN204479239U (en) | 2015-04-10 | 2015-04-10 | Air inlet pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520212358.0U CN204479239U (en) | 2015-04-10 | 2015-04-10 | Air inlet pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204479239U true CN204479239U (en) | 2015-07-15 |
Family
ID=53635027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520212358.0U Expired - Fee Related CN204479239U (en) | 2015-04-10 | 2015-04-10 | Air inlet pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204479239U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110530427A (en) * | 2019-09-11 | 2019-12-03 | 福建京科科技有限公司 | Motorcycle three-in-one sensor and its assembly method |
| CN110672133A (en) * | 2019-10-09 | 2020-01-10 | 福建京科科技有限公司 | Three-in-one sensor for motorcycle |
-
2015
- 2015-04-10 CN CN201520212358.0U patent/CN204479239U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110530427A (en) * | 2019-09-11 | 2019-12-03 | 福建京科科技有限公司 | Motorcycle three-in-one sensor and its assembly method |
| CN110672133A (en) * | 2019-10-09 | 2020-01-10 | 福建京科科技有限公司 | Three-in-one sensor for motorcycle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150715 Termination date: 20190410 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |