CN207715226U - A kind of electronic thermostat actuator - Google Patents
A kind of electronic thermostat actuator Download PDFInfo
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- CN207715226U CN207715226U CN201721849456.0U CN201721849456U CN207715226U CN 207715226 U CN207715226 U CN 207715226U CN 201721849456 U CN201721849456 U CN 201721849456U CN 207715226 U CN207715226 U CN 207715226U
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- output shaft
- ecu
- thermostat actuator
- engine
- angular transducer
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Abstract
The utility model belongs to automobile engine cooling technology field, more particularly to a kind of electronic thermostat actuator, including shell, integrated LIN communication modules, the thermostat actuator ECU for being connect with engine key network ECU are equipped in shell, thermostat actuator ECU connection motor drivers, motor driver connects direct current generator, direct current generator is driven through output shaft of the gear drive connection for being connect with engine bin cooling valve body, output shaft connects angular transducer, and angular transducer connects thermostat actuator ECU.The utility model is by receiving the ECU instructions of engine network control system, parsing, drives gear train and output shaft at driving motor, pass through interior angle sensor, accurately control engine bin coolant valve aperture in real time, response is fast, can stepless, subdivision, precisely matching engine cool operational temperature curve, improve the dynamic property of running car, stationarity, fuel economy and reduce exhaust emission.
Description
Technical field
The utility model belongs to automobile engine cooling technology field more particularly to a kind of electronic thermostat actuator.
Background technology
The effect of automobile thermostat is to be in closed state before the temperature of vehicle reaches normal temperature not yet, is at this moment started
The coolant liquid of machine carries out partial circulating in engine, plays the role of that engine is allowed to be rapidly heated, work as temperature through water pump return engine
Degree allows coolant liquid to carry out systemic circulation by entire radiator of water tank circuit more than being turned on after normal temperature, thus rapid cooling,
To ensure that engine works within the scope of suitable temperature, the effects that saving energy consumption can be played.Because engine is in low-temperature condition
Under be very oil consumption, and it is larger to the damage of vehicle, including easy ting produce carbon distribution and bring a series of problem.
Traditional thermostat is mainly waxtype thermostat, be controlled by thermal expansion and contraction principle by its internal paraffin it is cold
But liquid endless form.When cooling temperature is less than specified value, the refined paraffin wax in thermostat temperature sensor is in solid-state, thermostat valve
The channel between engine and radiator is closed under the action of the spring, and coolant liquid carries out engine through water pump return engine
Interior partial circulating.After coolant temperature reaches specified value, paraffin, which starts to melt, gradually becomes liquid, and volume increases and oppresses therewith
Rubber tube makes its contraction, acts on push rod with upward thrust while rubber tube is shunk, and push rod has valve downward anti-
Thrust makes valve opening, and at this moment coolant liquid flows back to engine via radiator and thermostat valve, then through water pump, carries out systemic circulation.
Most of thermostat is arranged in cylinder cover outlet pipeline, and such advantage is simple in structure, is easily drained cooling
Bubble in system generates oscillatory occurences the disadvantage is that thermostat is often opened and closed at work, due to by object expansion or shrinkage
It opens, turn off the flowing of coolant liquid, therefore have that reaction is slow, hysteresis, and without self diagnosis and fail safe function.
Utility model content
The purpose of the utility model is to overcome above-mentioned technical deficiencies, propose a kind of electronic thermostat actuator, have net
Network communication, system command execution, self diagnosis, feedback and fail safe function one novel electron thermostat actuator.
To reach above-mentioned technical purpose, the technical solution of the utility model is：
A kind of electronic thermostat actuator, including shell are equipped with integrated LIN communication modules in the shell, are used for and hair
The thermostat actuator ECU of motivation key network ECU connections, the thermostat actuator ECU connection motor drivers, the electricity
Machine driver connects direct current generator, and the direct current generator is driven through gear drive connection for cooling down valve with engine bin
The output shaft of body connection, the output shaft connect angular transducer, and the angular transducer connects the thermostat actuator
ECU。
As an improvement being equipped with fixing bracket in the shell, the support bracket fastened lower section is passed equipped with the angle
Sensor, the fixing bracket top are equipped with the output shaft, and the bottom of the output shaft is embedded with cylindrical magnet, the output
Gear is installed on axis.
As a further improvement, the cylindrical magnet is located at the surface of the angular transducer, the cylindrical magnet
The distance between described angular transducer is 1-3mm.
As a further improvement, the distance between the cylindrical magnet and the angular transducer are 2mm.
As a further improvement, the thermostat actuator ECU includes the chip of MELEXIS companies production
MLX81315, LIN interface, angular transducer input interface, direct current generator driving interface.
As a further improvement, the direct current generator is the electric motor with large torque of 12V high rotating speed 8000rpm models 560,
The gear drive transmits for two level, transmission ratio 180, and the output shaft is gear wheel output shaft.
As a further improvement, the angular transducer is three axis Hall sensors of MELEXIS companies production
MLX90363。
Due to the adoption of the above technical scheme, the utility model has the beneficial effects that：
The electronic thermostat actuator of the utility model is controlled due to driving valve using direct current generator with angle sensor
Open position, so, in actual application, the valve event response time is short, and angle position is accurate；It is integrated with LIN communications
The ECU of module can receive engine key network ECU instructions, parsing and execute, and carry out self diagnosis data exchange therewith；
Traditional actuator device is become into a kind of distributed electronic system control device, it has catered to current automobile electronic system control
Developing direction, contribute to enhance each system of engine between inner link, shared data with exchange, to further increase
The stability and reliability of system become the single open and close logic control of tradition into according to engine optimum working temperature curve
, the Linear Control of continuous multiple spot, give full play to the maximum effect of engine, contribute to the dynamic property of running car, stationarity,
Fuel economy and reduction exhaust emission, meanwhile, this novel integrated section temperature with self diagnosis, feedback and fail safe function
Device improves the stability and reliability of engine system.
The utility model is a kind of distributed electronic system control device, has network communication, system command execution, autodiagnosis
Disconnected, feedback and fail safe function one novel electron thermostat, with traditional, simple function waxtype thermostat actuator
It compares, it is instructed by receiving engine network control system ECU, and parsing, driving motor drive gear train and output shaft, and
By interior angle sensor, engine bin coolant flow valve and aperture, advantage are accurately controlled in real time：Respond fast, nothing
Sluggishness, sensitivity, precision are high, can stepless, subdivision, precisely matching engine cool operational temperature curve, help to improve automobile
Dynamic property, stationarity, fuel economy and the reduction exhaust emission of traveling.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model embodiment；
Fig. 2 is the mounting structure schematic diagram of angular transducer；
Wherein, 1- shells, 2- engine key network ECU, 3- thermostat actuator ECU, 4- motor drivers, 5- direct currents
Motor, 6- gear drives, 7- engine bins cool down valve body, 8- output shafts, 9- angular transducers, 10- vehicle body power supplys, 11-
Fixing bracket, 12- cylindrical magnets.
Specific implementation mode
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
As Fig. 1 and Fig. 2 jointly shown in, a kind of electronic thermostat actuator, including shell 1 is equipped with integrated LIN in shell 1
The thermostat actuator ECU3 that communication module is connect by LIN buses with engine key network ECU2, thermostat actuator
ECU3 connections motor driver 4, motor driver 4 connect direct current generator 5, and direct current generator 5 is driven through the company of gear drive 6
The output shaft 8 for being connect with engine bin cooling valve body 7 is connect, output shaft 8 connects angular transducer 9, and angular transducer 9 connects
Thermostat actuator ECU3.
Wherein, the vehicle body power supply 10 of above-mentioned thermostat actuator ECU3 and 12V and LIN buses (3 lines in total) connection, are used
Power supply is provided and is communicated in thermostat actuator.
In the present embodiment, thermostat actuator ECU3 include MELEXIS companies production chip MLX81315, LIN interface,
Angular transducer input interface, direct current generator driving interface.
In order to improve the stability of electronic thermostat actuator system, and in view of the application environment of its work, thermostat
Actuator ECU3 selects the chip MLX81315 of MELEXIS companies production, it is a integrated MCU and LIN that MELEXIS is released
The intelligent LIN motor drivers of interface, can be used for driving direct current generator, and the electric motor of automobile of 12V is suitble to drive, and -40 DEG C~+150
DEG C operating temperature range application；
The MCU that MLX81315 is internally integrated has the EEPROM of 2KB SRAM, 32KB Flash and 4x128B, low cost
32KB ROM, be suitble to large capacity application.Wherein 16 MCU are applied for controlling, and 4 MCU are used for communication control；
It is also integrated with abundant motor control peripheral hardware in MLX81315 pieces, is integrated with 4 half-bridge drivers on chip, can prop up
The motor drive current no more than 1A is held, PWM timers can be used for the drive control of motor.The integrated operation of chip interior is put
Big device can be used for detecting the driving current of motor；
MLX81315 also supports diagnosis and protection based on hardware or software, including overvoltage/under-voltage protection, overheat protector,
Overcurrent protection, the detection of FET open/shorts；
MLX81315 also has powerful communication function.The integrated LIN interface compatibilities of this intelligence LIN motor driver
The agreements such as LIN1.3, LIN2.x, SAE J2602 can be used for receiving order and feedback information.MLX81315 can also be according to accordingly matching
It sets and realizes PWM communications, while can support PWM two-way communications.
In the present embodiment, in order to ensure that the requirement of electronic thermostat actuator output torque, direct current generator 5 are selected
DC12V560, the model Rated motor load current 300mA, rotating speed 8000rpm are equipped with the transmission of 6 two level of gear drive, pass
Dynamic ratio 180, can meet the time action response within output shaft 8 and valve 200ms, to realize automobile engine nacelle coolant valve
The rotatory force of door and time response.
In the present embodiment, angular transducer 9 selects three axis Hall sensor MLX90363 of MELEXIS companies production, high
Exported up to 14 precision, SPI communication, 360 ° omni-directional detection supported to be very suitable for the applications such as absolute angle detection, can-
40 DEG C~+150 DEG C operating temperature ranges use, wiring board output and the angular transducer input interface phase of MLX90363 compositions
Even.
In the present embodiment, fixing bracket 11 is equipped in shell 1, the lower section of fixing bracket 11 is equipped with angular transducer 9, fixed
11 top of holder is equipped with output shaft 8, and the bottom of output shaft 8 is embedded with cylindrical magnet 12, and it is big to be equipped with gear on output shaft 8
Gear output shaft, cylindrical magnet 12 are located at the surface of angular transducer 9, between cylindrical magnet 12 and angular transducer 9 away from
From for 1-3mm, preferably 2mm.
Traditional simple function device is upgraded to more work(by automotive electronics thermostat actuator provided by the utility model
The distributed electronic system control unit of automotive engine control network that can be integrated, engine key network is according to enging cabin
The actual condition parameter of each system assigns instruction to thermostat by LIN networks, valve opening degree is adjusted, to change engine
The flow of coolant liquid and direction make engine keep optimum working temperature, the specific workflow of wherein thermostat as follows：
Thermostat actuator ECU modules receive signal, and analysis instruction by LIN communication interfaces, at the MCU in module
Reason obtains the angle position for needing to open, meanwhile, MCU acquires the actual angle position of thermostat, and by logical operation to mould
Electric-motor drive unit in block sends out drive signal, when the actual angle position of thermostat reaches the angle position for needing to open
When, motor drive signal stops；
Thermostat during the work time, when such as there is over-pressed, under-voltage, excess temperature, overcurrent, FET open circuits, short circuit, hold by thermostat
Row device ECU modules can detect interface detection by MCU, and be encoded by LIN communication protocols, feed back to engine key network,
Enable Safe Failure protected mode.
Specific embodiment of the present utility model described above does not constitute the restriction to scope of protection of the utility model.
The various other corresponding changes and deformation that any technical concept according to the present utility model is made, should be included in this practicality
In novel scope of the claims.
Claims (7)
1. a kind of electronic thermostat actuator, including shell, which is characterized in that be equipped in the shell integrated LIN communication modules,
Thermostat actuator ECU for being connect with engine key network ECU, the thermostat actuator ECU connection motors driving
Device, the motor driver connect direct current generator, the direct current generator be driven through gear drive connection for start
Cabin cools down the output shaft of valve body connection, and the output shaft connects angular transducer, and the angular transducer connects the section temperature
Device actuator ECU.
2. electronic thermostat actuator according to claim 1, which is characterized in that fixing bracket is equipped in the shell,
The support bracket fastened lower section is equipped with the angular transducer, and the output shaft is equipped with above the fixing bracket, described defeated
The bottom of shaft is embedded with cylindrical magnet, and gear is equipped on the output shaft.
3. electronic thermostat actuator according to claim 2, which is characterized in that the cylindrical magnet is located at the angle
The surface of sensor, the distance between the cylindrical magnet and the angular transducer are 1-3mm.
4. electronic thermostat actuator according to claim 3, which is characterized in that the cylindrical magnet is passed with the angle
The distance between sensor is 2mm.
5. the electronic thermostat actuator according to Claims 1-4 any claim, which is characterized in that the section temperature
Device actuator ECU includes chip MLX81315, LIN interface, angular transducer input interface, direct current of MELEXIS companies production
Motor driving interface.
6. the electronic thermostat actuator according to Claims 1-4 any claim, which is characterized in that the direct current
Motor is the electric motor with large torque of 12V high rotating speed 8000rpm models 560, and the gear drive transmits for two level, transmission ratio
It is 180, the output shaft is gear wheel output shaft.
7. the electronic thermostat actuator according to Claims 1-4 any claim, which is characterized in that the angle
Sensor is three axis Hall sensor MLX90363 of MELEXIS companies production.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721849456.0U CN207715226U (en) | 2017-12-26 | 2017-12-26 | A kind of electronic thermostat actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721849456.0U CN207715226U (en) | 2017-12-26 | 2017-12-26 | A kind of electronic thermostat actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207715226U true CN207715226U (en) | 2018-08-10 |
Family
ID=63050189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721849456.0U Active CN207715226U (en) | 2017-12-26 | 2017-12-26 | A kind of electronic thermostat actuator |
Country Status (1)
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| CN (1) | CN207715226U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109532806A (en) * | 2019-01-23 | 2019-03-29 | 南京林业大学 | A kind of electric system of pure electric automobile |
| CN113027591A (en) * | 2021-03-31 | 2021-06-25 | 潍柴动力股份有限公司 | Equipment and method for controlling movement of main valve of electronic thermostat |
-
2017
- 2017-12-26 CN CN201721849456.0U patent/CN207715226U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109532806A (en) * | 2019-01-23 | 2019-03-29 | 南京林业大学 | A kind of electric system of pure electric automobile |
| CN109532806B (en) * | 2019-01-23 | 2024-02-27 | 南京林业大学 | Electronic and electric system of pure electric automobile |
| CN113027591A (en) * | 2021-03-31 | 2021-06-25 | 潍柴动力股份有限公司 | Equipment and method for controlling movement of main valve of electronic thermostat |
| CN113027591B (en) * | 2021-03-31 | 2022-10-25 | 潍柴动力股份有限公司 | Equipment and method for controlling movement of main valve of electronic thermostat |
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