CN105756767A - Control system and method capable of realizing stepless speed regulation of engine cooling fan - Google Patents
Control system and method capable of realizing stepless speed regulation of engine cooling fan Download PDFInfo
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- CN105756767A CN105756767A CN201610134660.8A CN201610134660A CN105756767A CN 105756767 A CN105756767 A CN 105756767A CN 201610134660 A CN201610134660 A CN 201610134660A CN 105756767 A CN105756767 A CN 105756767A
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- Prior art keywords
- cooling fan
- engine
- rotating speed
- time
- chamber
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
- F01P7/04—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
- F01P7/026—Thermostatic control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
- F01P7/04—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio
- F01P7/042—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio using fluid couplings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2025/00—Measuring
- F01P2025/08—Temperature
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The invention provides a control system and method capable of realizing stepless speed regulation of an engine cooling fan. The control method comprises the following steps: firstly, acquiring an actual cooling liquid temperature of an engine; according to the actual cooling liquid temperature, determining a target rotary speed of the engine cooling fan; acquiring a real-time rotary speed of the engine cooling fan; according to a difference between the target rotary speed and the real-time rotary speed, determining the capacity of silicone oil needing to be injected; and controlling a silicone oil clutch to inject the silicone oil with the needed capacity into a second chamber from a first chamber. With the adoption of the control method provided by the invention, the control precision on the engine cooling fan of a control device is improved, responding time is shortened, the stability of the equipment is improved and the fault rate of the equipment is reduced.
Description
Technical field
The present invention relates to a kind of fan speed-governing method, be specifically related to a kind of method realizing cooling fan of engine stepless speed regulation.
Background technology
Automobile engine need to travel at suitable temperature, when car engine temperature is too high, certain measure must be taked to lower the temperature, electromotor could be met and possess the requirements such as good service behaviour, durability, the cooling provision of electromotor is generally adopted fan coolling technology.
Cooling fan of engine controller only controls silicon oil clutch with single closed loop PID by PWM in the market, and its control mode is single, simple, controls effect and has certain hysteresis, it is impossible to well plays the effect controlling engine temperature.
Summary of the invention
For above-mentioned deficiency, the present invention provides one to realize cooling fan of engine stepless speed-regulating device and method, it is possible to be effectively improved control accuracy and response speed, reduces equipment failure rate.
The present invention is a kind of control method realizing cooling fan of engine stepless speed regulation, obtains the actual coolant temperature of electromotor；According to described actual coolant temperature, it is determined that described cooling fan of engine needs the rotating speed of target reached；Obtain the real-time rotating speed of described cooling fan of engine；Difference according to described rotating speed of target Yu described real-time rotating speed, it is determined that need the capacity of the silicone oil injected；Control silicon oil clutch the first chamber and inject the silicone oil of described capacity to the second chamber.
Optionally, silicon oil clutch the first chamber to second chamber inject certain capacity silicone oil after, also include: judge that whether difference is more than setting value, obtains the first judged result；When the first judged result represents difference more than setting value, increase the input power of described cooling fan of engine.
Optionally, silicon oil clutch the first chamber to second chamber inject certain capacity silicone oil after, also include: according to difference, it is determined that the rotating speed of cooling fan of engine reaches the time needed for rotating speed of target；The time that judges, whether more than Preset Time, obtains the second judged result；When the second judged result express time is more than Preset Time, increase the input power of cooling fan of engine.
Optionally, silicon oil clutch the first chamber injects the silicone oil of certain capacity to the second chamber, specifically includes: send pulse width modulating signal by main control unit to silicon oil clutch, to regulate silicon oil clutch valve service time, regulates rotation speed of the fan.
A kind of control system realizing cooling fan of engine stepless speed regulation, including: actual coolant temperature acquiring unit, for obtaining the actual coolant temperature of electromotor；Rotating speed of target determines unit, for according to actual coolant temperature, it is determined that cooling fan of engine needs the rotating speed of target reached；Real-time rotating speed acquiring unit, for obtaining the real-time rotating speed of cooling fan of engine；Capacity determines unit, for the difference according to rotating speed of target Yu real-time rotating speed, it is determined that need the capacity of the silicone oil injected；Control unit, injects the silicone oil of certain capacity for controlling silicon oil clutch the first chamber to the second chamber.
Optionally, a kind of control system realizing cooling fan of engine stepless speed regulation, also include, first judging unit, for control silicon oil clutch the first chamber to second chamber inject certain capacity silicone oil after, it is judged that described difference, whether more than setting value, obtains the first judged result；First power increases unit, for when the first judged result represents difference more than setting value, increasing the input power of cooling fan of engine.
Optionally, a kind of control system realizing cooling fan of engine stepless speed regulation, also include: time acquisition unit, for according to difference, it is determined that the rotating speed of cooling fan of engine reaches the time needed for rotating speed of target；Second judged result unit, for judging that whether the rotating speed of cooling fan of engine reaches the time needed for rotating speed of target more than Preset Time, obtains the second judged result；Second power increases unit, during for the second judged result express time more than Preset Time, increases the input power of cooling fan of engine.
Optionally, a kind of control system realizing cooling fan of engine stepless speed regulation, also include: fan speed-regulating unit, regulate silicon oil clutch valve service time for sending pulse width modulating signal by main control unit to silicon oil clutch, regulate rotation speed of the fan.
The control method that the present invention adopts adopts rotation speed of the fan, temperature on software and controls time two close cycles self learning type PID control, this control method not only increases the control device control accuracy to cooling fan of engine, shorten response time, and improve the stability of equipment, reduce the fault rate of equipment.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is the flow chart of the control method realizing cooling fan of engine stepless speed regulation of the present invention；
Fig. 2 is the schematic diagram of PID (proportional-integral-differential, PID) control algolithm.
Detailed description of the invention
Being described below in conjunction with the accompanying drawing principle to the application and feature, example is served only for explaining invention, is not intended to limit the scope of the present invention.
Fig. 1 is the flow chart of the control method realizing cooling fan of engine stepless speed regulation of the present invention.As it is shown in figure 1, the present invention is a kind of control method realizing cooling fan of engine stepless speed regulation, specifically include:
Step 1. obtains the actual coolant temperature of electromotor；
Step 2. is according to described actual coolant temperature, it is determined that described cooling fan of engine needs the rotating speed of target reached；
Step 3. obtains the real-time rotating speed of described cooling fan of engine；
The step 4. difference according to described rotating speed of target Yu described real-time rotating speed, it is determined that need the capacity of the silicone oil injected；
Step 5. controls silicon oil clutch the first chamber and injects the silicone oil of described capacity to the second chamber.
The control method adopting the application improves the control device control accuracy to cooling fan of engine, shortens response time, and improves the stability of equipment, reduces the fault rate of equipment.
Optionally, silicon oil clutch the first chamber to second chamber inject certain capacity silicone oil after, also include: judge that whether difference is more than setting value, obtains the first judged result；When the first judged result represents difference more than setting value, increase the input power of described cooling fan of engine.
Optionally, silicon oil clutch the first chamber to second chamber inject certain capacity silicone oil after, also include: according to difference, it is determined that the rotating speed of cooling fan of engine reaches the time needed for rotating speed of target；The time that judges, whether more than Preset Time, obtains the second judged result；When the second judged result express time is more than Preset Time, increase the input power of cooling fan of engine.
Such as, in practice, recording coolant temperature is 100 DEG C, judging that fan is actually needed rotating speed is 2000r/min, and actually measured rotation speed of the fan is 1000r/min, therefore controller adopts two-loop system, makes the very fast increase of rotation speed of the fan to about 2000r/min in 200ms (t1), then every 20ms (t0) carries out a PID adjustment again, it is ensured that rotation speed of the fan can stably at 2000r/min.So that coolant temperature declines.
Optionally, silicon oil clutch the first chamber injects the silicone oil of certain capacity to the second chamber, specifically includes: send pulse width modulating signal by main control unit to silicon oil clutch, to regulate silicon oil clutch valve service time, regulates rotation speed of the fan.
A kind of control system realizing cooling fan of engine stepless speed regulation, including: actual coolant temperature acquiring unit 1, for obtaining the actual coolant temperature of electromotor；Rotating speed of target determines unit 2, for according to actual coolant temperature, it is determined that cooling fan of engine needs the rotating speed of target reached；Real-time rotating speed acquiring unit 3, for obtaining the real-time rotating speed of cooling fan of engine；Capacity determines unit 4, for the difference according to rotating speed of target Yu real-time rotating speed, it is determined that need the capacity of the silicone oil injected；Control unit 5, injects the silicone oil of certain capacity for controlling silicon oil clutch the first chamber to the second chamber.
Optionally, a kind of control system realizing cooling fan of engine stepless speed regulation, also include, first judging unit, for control silicon oil clutch the first chamber to second chamber inject certain capacity silicone oil after, it is judged that described difference, whether more than setting value, obtains the first judged result；First power increases unit, for when the first judged result represents difference more than setting value, increasing the input power of cooling fan of engine.
Optionally, a kind of control system realizing cooling fan of engine stepless speed regulation, also include: time acquisition unit, for according to difference, it is determined that the rotating speed of cooling fan of engine reaches the time needed for rotating speed of target；Second judged result unit, for judging that whether the rotating speed of cooling fan of engine reaches the time needed for rotating speed of target more than Preset Time, obtains the second judged result；Second power increases unit, during for the second judged result express time more than Preset Time, increases the input power of cooling fan of engine.
Optionally, a kind of control system realizing cooling fan of engine stepless speed regulation, also include: fan speed-regulating unit, regulate silicon oil clutch valve service time for sending pulse width modulating signal by main control unit to silicon oil clutch, regulate rotation speed of the fan.
Controlling device to power on, carry out initializing and System self-test program, self-check program reads impact after completing and controls the parameters information of rotation speed of the fan, and the output completing complexity for follow-up CPU control unit controls to prepare.CPU control unit first has to read the rotary speed data of data message (mainly including hydraulic pressure coolant temperature, ECT, engine coolant temperature and variator coolant temperature etc.) and fan in automobile ECU bus, these are carried out the fusion of two close cycles Self-learning PID algorithm, output PWM waveform, to control silicon oil clutch thus realizing regulating the effect of rotation speed of the fan.Meanwhile, rotation speed of the fan information, each sensor information and controller voltage, current information etc. are transferred to ECU bus by the mode of bus by CPU control unit, in order to for other ECU.
Fig. 2 is pid control algorithm schematic diagram, as in figure 2 it is shown, its PID of clutch of Different Silicon oil viscosity controls cycle and pid control parameter K in actual control processP、Ki、KdIt is not quite similar, therefore in this control system, it is added with Self-learning PID control algolithm, is controlling in fan process with Guarantee control system, scale parameter K in regulating time t1 (time t1 embodies the response time controlling device) that self adaptation is different and pid control parameterp.It addition, time t0 can regulate the pulse frequency of PWM, such that it is able to realize fine setting rotation speed of the fan, heighten the sensitivity that rotation speed of the fan regulates.
The foregoing is only the preferred embodiment of the application, not in order to limit the present invention, all within spirit herein and principle, any amendment of making, equivalent replacement, improvement etc., should be included within the protection domain of the application.
Claims (8)
1. the control method realizing cooling fan of engine stepless speed regulation, it is characterised in that including:
Obtain the actual coolant temperature of electromotor；
According to described actual coolant temperature, it is determined that described cooling fan of engine needs the rotating speed of target reached；
Obtain the real-time rotating speed of described cooling fan of engine；
Difference according to described rotating speed of target Yu described real-time rotating speed, it is determined that need the capacity of the silicone oil injected；
Control silicon oil clutch the first chamber and inject the silicone oil of described capacity to the second chamber.
2. a kind of control method realizing cooling fan of engine stepless speed regulation according to claim 1, it is characterised in that described silicon oil clutch the first chamber to second chamber inject described capacity silicone oil after, also include:
Judge that whether described difference is more than setting value, obtains the first judged result；
When described first judged result represents described difference more than setting value, increase the input power of described cooling fan of engine.
3. a kind of control method realizing cooling fan of engine stepless speed regulation according to claim 1, it is characterised in that described control silicon oil clutch the first chamber to second chamber inject described capacity silicone oil after, also include:
According to described difference, it is determined that the rotating speed of described cooling fan of engine reaches the time needed for described rotating speed of target；
Judge that whether the described time is more than Preset Time, obtains the second judged result；
When described second judged result represents that the described time is more than Preset Time, increase the input power of described cooling fan of engine.
4. a kind of control method realizing cooling fan of engine stepless speed regulation according to claim 1, it is characterised in that described control silicon oil clutch the first chamber injects the silicone oil of described capacity to the second chamber, specifically includes:
Send pulse width modulating signal by main control unit to silicon oil clutch, to regulate silicon oil clutch valve service time, regulate rotation speed of the fan.
5. the control system realizing cooling fan of engine stepless speed regulation, it is characterised in that including:
Actual coolant temperature acquiring unit, for obtaining the actual coolant temperature of electromotor；
Rotating speed of target determines unit, for according to described actual coolant temperature, it is determined that described cooling fan of engine needs the rotating speed of target reached；
Real-time rotating speed acquiring unit, for obtaining the real-time rotating speed of described cooling fan of engine；
Capacity determines unit, for the difference according to described rotating speed of target Yu described real-time rotating speed, it is determined that need the capacity of the silicone oil injected；
Control unit, injects the silicone oil of described capacity for controlling silicon oil clutch the first chamber to the second chamber.
6. a kind of control system realizing cooling fan of engine stepless speed regulation according to claim 5, also includes:
First judging unit, for control silicon oil clutch the first chamber to second chamber inject described capacity silicone oil after, it is judged that described difference, whether more than setting value, obtains the first judged result；
First power increases unit, for when described first judged result represents described difference more than setting value, increasing the input power of described cooling fan of engine.
7. a kind of control system realizing cooling fan of engine stepless speed regulation according to claim 5, also includes:
Time acquisition unit, for according to described difference, it is determined that the rotating speed of described cooling fan of engine reaches the time needed for described rotating speed of target；
Second judged result unit, for judging that whether the rotating speed of cooling fan of engine reaches the time needed for described rotating speed of target more than Preset Time, obtains the second judged result；
Second power increases unit, when representing that the described time is more than Preset Time for described second judged result, increases the input power of described cooling fan of engine.
8. a kind of control system realizing cooling fan of engine stepless speed regulation according to claim 5, also includes:
Fan speed-regulating unit, regulates silicon oil clutch valve service time for sending pulse width modulating signal by main control unit to silicon oil clutch, regulates rotation speed of the fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610134660.8A CN105756767B (en) | 2016-03-10 | 2016-03-10 | A kind of control system and method for realizing cooling fan of engine stepless speed regulation |
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| CN201610134660.8A CN105756767B (en) | 2016-03-10 | 2016-03-10 | A kind of control system and method for realizing cooling fan of engine stepless speed regulation |
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| CN105756767B CN105756767B (en) | 2018-10-02 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106368790A (en) * | 2016-09-30 | 2017-02-01 | 张家港长安大学汽车工程研究院 | Speed regulation method based on PID algorithm for engine cooling fan |
| CN109779736A (en) * | 2019-03-20 | 2019-05-21 | 山东交通学院 | A kind of energy-conserving and optimizing control method and system of engine electric-controlled silicon-oil fan |
| CN110295990A (en) * | 2019-06-29 | 2019-10-01 | 潍柴动力股份有限公司 | Electric-control motor control method for fan and device |
| CN110685936A (en) * | 2019-08-23 | 2020-01-14 | 苏州人和汽车科技有限公司 | Stepless speed regulating fan control system |
| CN111140334A (en) * | 2019-12-24 | 2020-05-12 | 潍柴动力股份有限公司 | Engine fan rotating speed sensor credibility verification and correction method and system |
| CN111878440A (en) * | 2020-08-31 | 2020-11-03 | 一汽解放汽车有限公司 | Vehicle and rotation speed control method, device and system of electric control silicone oil fan of vehicle |
| CN112486017A (en) * | 2020-12-16 | 2021-03-12 | 杭州广安汽车电器有限公司 | Blower PID control method for automobile air conditioner controller |
| CN114810857A (en) * | 2022-06-28 | 2022-07-29 | 潍柴动力股份有限公司 | Method and system for controlling separation time of electric control silicone oil fan |
| CN115750063A (en) * | 2022-12-01 | 2023-03-07 | 长城汽车股份有限公司 | Control method of silicone oil fan, control device of silicone oil fan and vehicle |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106368790B (en) * | 2016-09-30 | 2019-01-11 | 张家港长安大学汽车工程研究院 | A kind of cooling fan of engine speed regulating method based on pid algorithm |
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| CN109779736B (en) * | 2019-03-20 | 2023-08-11 | 山东交通学院 | Energy-saving optimal control method and system for engine electric control silicone oil fan |
| CN109779736A (en) * | 2019-03-20 | 2019-05-21 | 山东交通学院 | A kind of energy-conserving and optimizing control method and system of engine electric-controlled silicon-oil fan |
| CN110295990A (en) * | 2019-06-29 | 2019-10-01 | 潍柴动力股份有限公司 | Electric-control motor control method for fan and device |
| CN110685936A (en) * | 2019-08-23 | 2020-01-14 | 苏州人和汽车科技有限公司 | Stepless speed regulating fan control system |
| CN111140334A (en) * | 2019-12-24 | 2020-05-12 | 潍柴动力股份有限公司 | Engine fan rotating speed sensor credibility verification and correction method and system |
| CN111878440A (en) * | 2020-08-31 | 2020-11-03 | 一汽解放汽车有限公司 | Vehicle and rotation speed control method, device and system of electric control silicone oil fan of vehicle |
| CN111878440B (en) * | 2020-08-31 | 2022-04-19 | 一汽解放汽车有限公司 | Vehicle and rotation speed control method, device and system of electric control silicone oil fan of vehicle |
| CN112486017A (en) * | 2020-12-16 | 2021-03-12 | 杭州广安汽车电器有限公司 | Blower PID control method for automobile air conditioner controller |
| CN114810857A (en) * | 2022-06-28 | 2022-07-29 | 潍柴动力股份有限公司 | Method and system for controlling separation time of electric control silicone oil fan |
| CN114810857B (en) * | 2022-06-28 | 2022-10-18 | 潍柴动力股份有限公司 | Method and system for controlling separation time of electric control silicone oil fan |
| CN115750063A (en) * | 2022-12-01 | 2023-03-07 | 长城汽车股份有限公司 | Control method of silicone oil fan, control device of silicone oil fan and vehicle |
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