CN202793311U - Camshaft position sensor - Google Patents
Camshaft position sensor Download PDFInfo
- Publication number
- CN202793311U CN202793311U CN 201220329347 CN201220329347U CN202793311U CN 202793311 U CN202793311 U CN 202793311U CN 201220329347 CN201220329347 CN 201220329347 CN 201220329347 U CN201220329347 U CN 201220329347U CN 202793311 U CN202793311 U CN 202793311U
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- main body
- chip
- circuit board
- shell
- position sensor
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- Expired - Fee Related
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- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
The utility model relates to a camshaft position sensor, which comprises a main body, a shell, a sealing ring, a chip, a circuit board and pins. The sealing ring is arranged between the main body and the shell, and the main body and the shell are connected together in an interference assembling manner by means of clamping points. The chip is arranged in a square slot on the front end surface of the main body. The circuit board is arranged in a square slot on the side surface of the main body. The chip is connected with the circuit board through brazing. The circuit board is also connected with three pins on the main body through brazing. The gap between the shell and the main body is filled with silica gel. The camshaft position sensor has the advantages of simple structure and reasonable design and ensures the accuracy and the consistency of output signals. Meanwhile, the output signals are square-wave signals. Tests on products show that the precision of the output signals is 1.5 degree and the consistency of the output signals is high.
Description
Technical field
The utility model relates to a kind of CMPS Camshaft Position Sensor, particularly relates to a kind of CMPS Camshaft Position Sensor that the Hall effect principle detects engine cam shaft position corner of using.
Background technology
At present, along with Global Auto industry improving constantly emission standard, impelling car load ECU that the dense dilution of engine mixed gas body and the control accuracy of optimum igniting time are required will be more and more higher, camshaft-signal sensor then is one of most important sensor in the automotive electronic control system system, but existing camshaft-signal sensor structure is complicated, and installation and use are all extremely inconvenient.CMPS Camshaft Position Sensor is to realize by the detection to the camshaft location corner to the detection of gas distribution phase of engine in addition, because the accuracy requirement of port timing is higher, so higher to the accuracy requirement of sensor output signal.
Summary of the invention
The purpose of this utility model is to overcome the weak point that exists in the above-mentioned technology, provides a kind of simple in structure, reasonable in design, can the output Shaping signal, and can guarantee the CMPS Camshaft Position Sensor of signal accuracy.
In order to achieve the above object, the technical solution adopted in the utility model is: comprise main body, shell, the first O-ring seal, the second O-ring seal, chip, circuit board, contact pin, be provided with O-ring seal between described main body and the shell, and by the stuck-point interference assembly connection, in the body front end face square groove chip is housed, in the square groove of main body side circuit board is housed, chip is connected with the circuit board soldering, circuit board also is connected with three contact pin solderings on the main body, is perfused with silica gel between shell and the main body.
The utility model has the advantages that: simple in structure, reasonable in design, can guarantee precision and the consistance of output signal, output signal is square wave, be 1.5 degree by the product test output signal accuracy, and consistance is higher.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the variation synoptic diagram of magnetic flux in the magnetic circuit of the present utility model;
Fig. 3 is sensor output signal voltage synoptic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
By Fig. 1-Fig. 3 as can be known, the utility model comprises main body 1, shell 2, the first O-ring seal 3, the second O-ring seal 4, chip 6, circuit board 7, contact pin 8, be provided with O-ring seal 3 between described main body 1 and the shell 2, and by the stuck-point interference assembly connection, in the main body 1 front end face square groove chip 6 is housed, in the main body 1 side square groove circuit board 7 is housed, chip 6 is connected with circuit board 7 solderings, circuit board 7 also is connected with three contact pin 8 solderings on the main body 1, is perfused with silica gel 5 between shell 2 and the main body 1.Circuit board 7 of the present utility model is packed in the main body 1 side square groove, chip 6 is located in the main body 1 front end face square groove, circuit board 7 carries out soldering with the pin of chip 6 and three contact pins 8 on the main body 1 respectively, three contact pins 8 connect Engine ECU, thereby flow to Engine ECU by contact pin 8 after signal process circuit board 7 shapings that realize chip 6 is detected.Simultaneously, main body 1 and shell 2 concentric interference fit, and by the stuck-point interference assembly connection, can guarantee to connect reliable.Be provided with O-ring seal 3 between shell 2 and the main body 1, be perfused with simultaneously silica gel 5 and seal, can guarantee sealing effectiveness.
The utility model is installed on the engine, when the signal wheel rotates, forms the magnetic circuit of a variation between signal wheel and the chip 6, as shown in Figure 2.When double wedge during over against sensor probe, magnetic flux just consists of the loop through Hall chip and double wedge, Hall chip will detect by the magnetic flux of chip and the magnetic flux value of chip internal setting and compare this moment, when greater than setting value, the transistor turns of chip controls output stage, sensor output signal voltage is low level, as shown in Figure 3, for example, when supply voltage was 5V, low level signal voltage was 0.1～0.4 V.When double wedge leaves sensor probe, pass through the magnetic flux of chip this moment less than setting value, the transistor of chip controls output stage is closed, and sensor output signal voltage is high level, and for example, when supply voltage was 5V, high level signal voltage was 4.8～5.0 V.In addition, output is high level or low level during the relative double wedge of sensor probe, and namely the output signal logical relation corresponding with signal wheel double wedge can require to set accordingly according to different ECU.
CMPS Camshaft Position Sensor major function of the present utility model is for detecting the camshaft of car engine position, the inner Hall-type integrated circuit (IC) chip that adopts, use fixedly relative position of plastic body, and chip carries permanent magnet, be integrated encapsulation, solved the low problem of split type chip assembly precision, and the signal process inner modulation that detects, output signal is square wave, signal accuracy is higher, satisfy the accuracy requirement of car engine ignition control, make gas fuel burning more abundant, satisfy automobile dynamic quality and exhaust emissions index.
Claims (1)
1. CMPS Camshaft Position Sensor, comprise main body (1), shell (2), the first O-ring seal (3), the second O-ring seal (4), chip (6), circuit board (7), contact pin (8), it is characterized in that: be provided with the first O-ring seal (3) between described main body (1) and the shell (2), and by the stuck-point interference assembly connection, in main body (1) the front end face square groove chip (6) is housed, in the square groove of main body (1) side circuit board (7) is housed, chip (6) is connected with circuit board (7) soldering, circuit board (7) also is connected with three contact pins (8) soldering on the main body (1), is perfused with silica gel (5) between shell (2) and the main body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220329347 CN202793311U (en) | 2012-07-09 | 2012-07-09 | Camshaft position sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220329347 CN202793311U (en) | 2012-07-09 | 2012-07-09 | Camshaft position sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202793311U true CN202793311U (en) | 2013-03-13 |
Family
ID=47820561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220329347 Expired - Fee Related CN202793311U (en) | 2012-07-09 | 2012-07-09 | Camshaft position sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202793311U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106248010A (en) * | 2016-07-28 | 2016-12-21 | 重庆峰创科技有限公司 | A kind of high-precision intelligent position sensor |
| CN108571984A (en) * | 2017-03-07 | 2018-09-25 | 通用汽车环球科技运作有限责任公司 | Sliding cam axis cylinder position senses |
| CN112729101A (en) * | 2020-12-24 | 2021-04-30 | 奇瑞汽车股份有限公司 | Position sensor mounting structure and vehicle |
-
2012
- 2012-07-09 CN CN 201220329347 patent/CN202793311U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106248010A (en) * | 2016-07-28 | 2016-12-21 | 重庆峰创科技有限公司 | A kind of high-precision intelligent position sensor |
| CN108571984A (en) * | 2017-03-07 | 2018-09-25 | 通用汽车环球科技运作有限责任公司 | Sliding cam axis cylinder position senses |
| CN108571984B (en) * | 2017-03-07 | 2021-06-11 | 通用汽车环球科技运作有限责任公司 | Sliding camshaft cylinder position sensing |
| CN112729101A (en) * | 2020-12-24 | 2021-04-30 | 奇瑞汽车股份有限公司 | Position sensor mounting structure and vehicle |
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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: 20130313 Termination date: 20150709 |
|
| EXPY | Termination of patent right or utility model |