CN201765067U - Improved engine water temperature sensor - Google Patents
Improved engine water temperature sensor Download PDFInfo
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- CN201765067U CN201765067U CN2010202300972U CN201020230097U CN201765067U CN 201765067 U CN201765067 U CN 201765067U CN 2010202300972 U CN2010202300972 U CN 2010202300972U CN 201020230097 U CN201020230097 U CN 201020230097U CN 201765067 U CN201765067 U CN 201765067U
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- water temperature
- temperature sensor
- signal
- engine water
- output plug
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Abstract
The utility model provides an improved engine water temperature sensor which belongs to the technical field of automobile spare parts. Aimed at solving the problem of the prior engine water temperature sensor that most of signals are distorted, the improved engine water temperature sensor comprises a sensor body, the sensor body is spliced with an output plug, the output plug is connected with a power cord, a plurality of signal lines are arranged on the output plug, and each signal line is respectively connected with a thermocouple arranged in the sensor body. The improved engine water temperature sensor has the advantages of good working stability, high precision in temperature measurement and control, and the like.
Description
Technical field
The utility model belongs to technical field of automobile parts, relates to cooling-water temperature sensor, especially relates to a kind of modified form engine water temperature sensor.
Background technology
The engine control system sensor is the core of whole automobile sensor, and kind is a lot, comprises temperature sensor, pressure transducer, position and speed probe, flow sensor, gas concentration sensor and detonation sensor etc.These sensors provide the working condition information of engine to the electronic control unit ECU of engine, for ECU engine working conditions are accurately controlled, with the dynamic property that improves engine, reduce oil consumption, reduce toxic emission and carry out fault detect.Cooling-water temperature sensor is the important component part of engine control system.
In order to improve the serviceability of engine water temperature sensor, people have carried out long-term exploration, have proposed various solutions.For example Chinese patent literature discloses a kind of explosive motor with compound cooling-water temperature sensor [application number: CN200720017063.3], component parts mainly contains plug assembly, O-ring seal, spring, housing, insulating cylinder, ECU thermistor, conduction estersil, water-thermometer thermistor, wherein thermistor is a sheet, place the bottom of insulating cylinder inner chamber, one conduction plain cushion is arranged above it, bottom surface is supported on the boss of housing formation, and housing is as another link electrode of above-mentioned thermistor; Spring adopts special-shaped, and the bottom of spring extends to plain cushion along the internal chamber wall of insulating cylinder and contacts, and the top of spring is connected with another electrode plug; ECU is suspended in the axial centre of spring with resistance.Beneficial effect is: reduced the manufacture difficulty of thermistor, be convenient to processing; Thermistor and ECU resistance make the thermometric unanimity at the same position thermometric, have also improved the response time of sensor; Reduced manufacturing cost; Be convenient to the batch process of the type product.
The somebody has invented a kind of water temperature sensor for cars [application number: CN200810136518.2], and by the power module power supply, cooling-water temperature sensor is connected with car load CAN bus by single-chip microcomputer.Establish CAN module and AD modular converter in the single-chip microcomputer, the AD modular converter is a simulation～digital signal converter, the simulating signal of cooling-water temperature sensor collection sends the AD modular converter to, be converted to digital signal through the AD modular converter, send to car load CAN bus by the CAN module converts for the CAN bus signals again.
Such scheme all adopts single thermojunction type sensor as described in Figure 1, and sensor output plug is two lines, and is perhaps three-way.A power lead, a signal wire, again one be ground wire (inner ground connection is adopted in cancellation sometimes, if engine operation in rugged environment extremely, the sensor signal distortion is more, and in case thermopair occurs and break down and promptly can't normally use.
Summary of the invention
The purpose of this utility model is at the problems referred to above, and a kind of good operating stability is provided, the modified form engine water temperature sensor that temperature measurement accuracy and control accuracy are high.
For achieving the above object, the utility model has adopted following technical proposal: this modified form engine water temperature sensor, comprise sensor body, on sensor body, be plugged with the output plug, on the output plug, be connected with a power lead, it is characterized in that described output plug is provided with some signal wires, on every signal wire, be connected with the thermopair that is arranged in the sensor body respectively.
The utility model is provided with some thermopairs and the signal wire that is connected on the thermopair, and each thermopair produces temperature signal respectively and exports by signal wire separately.Even if be operated in extremely and also can obtain Hi-Fi signal exactly in the rugged environment, thereby effectively improve control accuracy.
In above-mentioned modified form engine water temperature sensor, described output plug is provided with two signal wires, is connected with thermopair on every signal wire respectively.Usually the quantity of thermopair is two, can certainly adopt plural scheme.
In above-mentioned modified form engine water temperature sensor, described output plug is provided with a ground wire.The utility model also can adopt the mode of inner ground connection.
In above-mentioned modified form engine water temperature sensor, thereby described signal wire is also compared to the received signal with the signal that can receive each signal wire and is judged that the ECU whether sensor breaks down is connected, and when having a thermopair operate as normal at least, described ECU can filter out the signal of the signal wire that is connected with the operate as normal thermopair and guarantee normal operation of sensor.
Owing to adopted the integrated mode of two or more identical thermopairs, compare traditional sensor, one or more signals have been increased, have one to connect power supply, two or two above signal outputs, a ground connection, processing mode is simpler, and ECU can contrast each road signal, whether determine sensor breaks down, even one or more thermopair is impaired, also can filter out the wherein signal of one tunnel operate as normal by ECU, guarantee the security of vehicle in cruising.
Compared with prior art, the advantage of this modified form engine water temperature sensor is: 1, owing to be provided with two or more thermopairs, even if be operated in extremely and also can obtain Hi-Fi signal exactly in the rugged environment, thereby effectively improve control accuracy.2, ECU can contrast each road signal, and whether determine sensor breaks down, even one or more thermopair is impaired, also can filter out the wherein signal of one tunnel operate as normal by ECU, guarantees the security of vehicle in cruising.
Description of drawings
Fig. 1 is the structural representation of the output plug of prior art.
Fig. 2 is the structural representation of the output plug that provides of the utility model.
Fig. 3 is that the utility model provides structured flowchart.
Among the figure, output plug 1, power lead 2, signal wire 3, thermopair 4, ground wire 5.
Embodiment
Shown in Fig. 2 and 3, this modified form engine water temperature sensor comprises sensor body, is plugged with output plug 1 on sensor body, is connected with a power lead 2 on output plug 1.Output plug 1 is provided with some signal wires 3, is connected with the thermopair 4 that is arranged in the sensor body on every signal wire 3 respectively.Output plug 1 is provided with a ground wire 5.
In the present embodiment, output plug 1 is provided with two signal wires 3, is connected with thermopair 4 on every signal wire 3 respectively.Thereby signal wire 3 is also compared to the received signal with the signal that can receive each signal wire 3 and is judged that the ECU whether sensor breaks down is connected, and when having thermopair 4 operate as normal at least, ECU can filter out the signal of the signal wire 3 that is connected with operate as normal thermopair 4 and guarantee normal operation of sensor.
Owing to adopted the integrated mode of two or more identical thermopairs 4, compare traditional sensor, one or more signals have been increased, have one to connect power supply, two or two above signal outputs, a ground connection, processing mode is simpler, and ECU can contrast each road signal, whether determine sensor breaks down, even one or more thermopair 4 is impaired, also can filter out the wherein signal of one tunnel operate as normal by ECU, guarantee the security of vehicle in cruising.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has used terms such as output plug 1, power lead 2, signal wire 3, thermopair 4, ground wire 5 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.
Claims (4)
1. modified form engine water temperature sensor, comprise sensor body, on sensor body, be plugged with output plug (1), on output plug (1), be connected with a power lead (2), it is characterized in that, described output plug (1) is provided with some signal wires (3), is connected with the thermopair (4) that is arranged in the sensor body on every signal wire (3) respectively.
2. modified form engine water temperature sensor according to claim 1 is characterized in that, described output plug (1) is provided with two signal wires (3), is connected with thermopair (4) on every signal wire (3) respectively.
3. modified form engine water temperature sensor according to claim 1 and 2 is characterized in that, described output plug (1) is provided with a ground wire (5).
4. modified form engine water temperature sensor according to claim 1 and 2, it is characterized in that, described signal wire (3) with can receive each signal wire (3) thus signal and compare to the received signal and judge that the ECU whether sensor breaks down is connected, and when having a thermopair (4) operate as normal at least, described ECU can filter out the signal of the signal wire (3) that is connected with operate as normal thermopair (4) and guarantee normal operation of sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202300972U CN201765067U (en) | 2010-06-21 | 2010-06-21 | Improved engine water temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202300972U CN201765067U (en) | 2010-06-21 | 2010-06-21 | Improved engine water temperature sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201765067U true CN201765067U (en) | 2011-03-16 |
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ID=43717676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202300972U Expired - Fee Related CN201765067U (en) | 2010-06-21 | 2010-06-21 | Improved engine water temperature sensor |
Country Status (1)
| Country | Link |
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| CN (1) | CN201765067U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113739948A (en) * | 2021-10-13 | 2021-12-03 | 首凯汽车零部件（江苏）有限公司 | Intelligent high-temperature sensor for vehicle |
-
2010
- 2010-06-21 CN CN2010202300972U patent/CN201765067U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113739948A (en) * | 2021-10-13 | 2021-12-03 | 首凯汽车零部件（江苏）有限公司 | Intelligent high-temperature sensor for 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: 20110316 Termination date: 20140621 |
|
| EXPY | Termination of patent right or utility model |