CN202382791U - Sensor head of air flowmeter - Google Patents
Sensor head of air flowmeter Download PDFInfo
- Publication number
- CN202382791U CN202382791U CN2011205711251U CN201120571125U CN202382791U CN 202382791 U CN202382791 U CN 202382791U CN 2011205711251 U CN2011205711251 U CN 2011205711251U CN 201120571125 U CN201120571125 U CN 201120571125U CN 202382791 U CN202382791 U CN 202382791U
- Authority
- CN
- China
- Prior art keywords
- sensor head
- air flowmeter
- air
- flowmeter
- sensing head
- 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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Abstract
The utility model discloses a sensor head of an air flowmeter. The sensor head is characterized in that the sensor head of the air flowmeter comprises a ceramic sheet and a plurality of platinum resistors. The platinum resistors are etched by platinum thin film sheets attached on the ceramic sheet. The sensor head is installed on the air flowmeter of an air intake pipeline positioned between an automobile filter and a throttle valve, and a non-oil injection physical quantity of the air intaking is converted into an electric physical quantity to be output. The sensor head of the air flowmeter is convenient to manufacture, cheap in price and good in electrical property.
Description
Technical field
The utility model relates to a kind of air flowmeter, what be specifically related to is a kind of sensing head of air flowmeter.
Background technology
An air flowmeter is installed on the admission line between automobile filter and the air throttle; Its effect is to convert this non-oil spout physical quantity of air inlet to an electric physical quantity output; The increase or the minimizing of power supply control unit (ECU) control distributive value; So just can control distributive value and reduce discharging, satisfy environmental requirement according to the ideal air-fuel ratio under the different operating modes to reach.The key of this air flowmeter is a sensing head; In the prior art; What sensing head adopted is on the platinum film sheet, to make several RTDs by lithography. this technology is difficult to promote at home at present still in advanced development and expensive, though the domestic existing foil gauge sensing head that generally adopts is cheap; But electrical performance characteristics is undesirable, awkward situation that domestic how tame flowmeter factory faced that Here it is.
Summary of the invention
In view of the problem that present known technology exists, the technical matters that the utility model will solve is the air flowmeter sensing head that is to provide a kind of easy to make, low price, good electrical property.
For solving the problems of the technologies described above, the utility model takes following technical scheme to accomplish:
The sensing head of air flowmeter is characterized in that: the sensing head of said air flowmeter comprises potsherd and several RTDs, and several RTDs are carved by the platinum film sheet that is attached on the potsherd.
The utility model utilizes the thick film manufacturing technology on extremely thin potsherd, to make RTD, and is not only easy to make to replace the platinum film sensing head of prior art, low price, and aspect electrical property, also reach external advanced level basically.
Description of drawings
The utility model has following accompanying drawing:
Fig. 1 is for installing the air flowmeter of the utility model;
Fig. 2 is the zoomed-in view of the utility model among Fig. 1.
Embodiment
Accompanying drawing has been represented the technical scheme and the embodiment of the utility model, combines accompanying drawing to further describe each relevant details and principle of work thereof of embodiment below again.
With reference to accompanying drawing 1, the structural representation of the air flowmeter of the utility model is installed, sensing head 1; Wiring board 2, air intake passage 3; Sensing head 1 is located in the middle of the air intake passage 3, and with reference to accompanying drawing 2, said sensing head 1 comprises potsherd 4 and RTD R1 and R2; RTD R1 and R2 are carved by the platinum film sheet that is attached on the potsherd 4, and RTD R1 and R2 are electrically connected with said wiring board 2 through connection terminal 5.Above-mentioned air flowmeter sensor head construction is convenient, low price, good electrical property.
The utility model is installed on the air flowmeter of admission line between automobile filter and the air throttle; Can convert this non-oil spout physical quantity of air inlet to an electric physical quantity output; The increase or the minimizing of power supply control unit (ECU) control distributive value; So just can control distributive value and reduce discharging, satisfy environmental requirement according to the ideal air-fuel ratio under the different operating modes to reach.
Claims (1)
1. the sensing head of air flowmeter is characterized in that: the sensing head of said air flowmeter comprises potsherd and several RTDs, and several RTDs are carved by the platinum film sheet that is attached on the potsherd.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205711251U CN202382791U (en) | 2011-12-31 | 2011-12-31 | Sensor head of air flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205711251U CN202382791U (en) | 2011-12-31 | 2011-12-31 | Sensor head of air flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202382791U true CN202382791U (en) | 2012-08-15 |
Family
ID=46631287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205711251U Expired - Fee Related CN202382791U (en) | 2011-12-31 | 2011-12-31 | Sensor head of air flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202382791U (en) |
-
2011
- 2011-12-31 CN CN2011205711251U patent/CN202382791U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120815 Termination date: 20121231 |