CN110566334A - Multi-sensing coupling engine temperature control system - Google Patents
Multi-sensing coupling engine temperature control system Download PDFInfo
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- CN110566334A CN110566334A CN201910782610.4A CN201910782610A CN110566334A CN 110566334 A CN110566334 A CN 110566334A CN 201910782610 A CN201910782610 A CN 201910782610A CN 110566334 A CN110566334 A CN 110566334A
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- Prior art keywords
- engine
- control system
- temperature control
- sensor
- silicone oil
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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
- 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
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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
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
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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
- F01P2023/00—Signal processing; Details thereof
- F01P2023/08—Microprocessor; Microcomputer
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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
- F01P2025/00—Measuring
- F01P2025/08—Temperature
- F01P2025/13—Ambient temperature
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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
- F01P2025/00—Measuring
- F01P2025/08—Temperature
- F01P2025/50—Temperature using two or more temperature sensors
-
- 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
- F01P2025/60—Operating parameters
-
- 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
- F01P2025/60—Operating parameters
- F01P2025/64—Number of revolutions
-
- 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
- F01P2037/00—Controlling
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The invention provides a multi-sensor coupling engine temperature control system which comprises an engine and a temperature control system connected to the engine, wherein the temperature control system comprises a collecting device connected to the engine, a cooling device connected to the engine and a control device used for controlling the operation of the cooling device, and the collecting device is used for collecting the operation parameters of the engine and the cooling device so as to transmit the operation parameters to the control device for coupling calculation and adjusting the actual operation parameters of the cooling device, so that the engine can operate at a stable temperature. The multi-sensor coupled engine temperature control system fully utilizes the inertia of the engine as a power source by setting a multi-sensor to carry out coupled calculation and a combined control strategy of feedforward and feedback, realizes precise temperature control, and reduces the emission of the automobile engine while reducing the actual fuel consumption rate of the automobile engine.
Description
Technical Field
The invention relates to a multi-sensor coupling engine temperature control system, in particular to a multi-sensor coupling engine temperature control system applied to temperature control and regulation of an automobile engine.
Background
With the rapid development of the new generation information communication technology and the continuous and deep integration of the advanced manufacturing technology, a new industrial revolution represented by intelligent manufacturing is promoted globally, and digitization, networking and intellectualization increasingly become the main trend of the future manufacturing development.
At present, the development of the cooling mechanism and the cooling system structure form of the engine for the vehicle tends to mature: in the last 30 years, the study of a novel cooling mechanism, namely a boiling heat exchange technology, is started by scholars of Nukiyama and the like. Engines such as BMW N52 series, Audi EA888 series, popular EA11 series, etc. also start to adopt multi-circuit cooling system structures. Therefore, the vehicle engine system enterprises, whether domestic or foreign, focus on the development of intelligent sensing and control equipment, so that a new generation of engine intelligent fan based on multi-sensing coupling precise temperature control becomes a research and development focus, and the high-point of intelligent cooling of the vehicle engine is preempted.
However, the conventional cooling fan is directly driven by the engine, and the engine with the fan and the radiator with the fan cover are fixed on the frame by elastic supports respectively. In order to avoid the collision between the fan and the fan cover caused by vibration in the running process of the automobile, the design value of the radial clearance between the fan impeller and the fan cover is larger than 15mm, and the volume efficiency of the fan is greatly reduced. The overall efficiency of the fan depends on the product of volumetric, mechanical and hydraulic efficiency. The traditional fan blades are formed by stamping thin steel plates, hydraulic efficiency is low, slip loss exists in transmission, and mechanical efficiency is not high, so that the total efficiency of the traditional cooling fan is only about 25%.
The controllable cooling fans used in existing automobiles mainly include: electronic fans and silicone oil clutch type controllable fans. Specifically, the electric control fan in the prior art is directly driven by a motor, is not limited by the rotating speed of an engine, can be independently controlled, and can be flexibly arranged. However, the fan motor is powered by a battery, while the battery for a vehicle is only 12V-24V, and the power of the fan is limited because the battery does not support continuous large current discharge. While the additional power supply causes an increase in cost.
The silicone oil clutch drives the clutch to open and close by changing the filling amount of the silicone oil in the working cavity within a certain range, performs feedback control by using a sensor signal, and fully utilizes the inertia of the engine as a power source. Meanwhile, due to the controllable adjustment of the silicon oil quantity, the stepless speed regulation of the cooling fan can be realized, so that the large amount of momentum loss of the engine is avoided. Compared with an electronic fan, the silicone oil clutch has a simple structure and a small cost increase, but is not arranged at the same position as the electronic fan.
In view of the above, it is necessary to provide a new fan control system for controlling and regulating the temperature of an automobile engine to solve the above problems.
Disclosure of Invention
The invention aims to provide a multi-sensor coupling engine temperature control system, which fully utilizes the inertia of an engine as a power source by setting a multi-sensor to carry out coupling calculation and a combined control strategy of feedforward and feedback, realizes precise temperature control, reduces the actual fuel consumption rate of the automobile engine and reduces the emission of the automobile engine.
In order to achieve the above object, the present invention provides a temperature control system for a multi-sensor coupled engine, including an engine, and a temperature control system connected to the engine, where the temperature control system includes a collecting device connected to the engine, a cooling device connected to the engine, and a control device for controlling the operation of the cooling device, and the collecting device is configured to collect operation parameters of the engine and the cooling device, so as to transmit the operation parameters to the control device for performing a coupling calculation and adjusting actual operation parameters of the cooling device, so that the engine operates at a stable temperature.
As a further improvement of the present invention, the collecting device includes a temperature sensor, a speed sensor and a rotation speed sensor electrically connected to the control device, respectively.
As a further improvement of the present invention, at least three temperature sensors are provided for measuring the ambient temperature of the engine during use and the actual use temperature of the engine.
As a further improvement of the present invention, the speed sensor is used for measuring an operation speed of the engine during operation, and the rotational speed sensor is used for measuring the rotational speed of the engine.
As a further improvement of the present invention, the control device includes a coupling calculation device, and the coupling calculation device is respectively in signal connection with the acquisition device and the cooling device to receive various signals acquired by the acquisition device and calculate and obtain a control signal for controlling the operation of the cooling device.
As a further improvement of the present invention, the coupling calculation device includes a MAP feedforward controller and a PID feedback controller, and the control signal is obtained by the MAP feedforward controller through coupling calculation and is corrected by the PID feedback controller.
As a further improvement of the present invention, the cooling device includes a fan cooling unit and a liquid cooling unit, and the fan cooling unit is provided with a signal conversion unit to control the fan cooling unit to operate at a different rotation speed from the engine.
As a further improvement of the invention, the fan cooling unit comprises a silicone oil clutch fan unit connected with the signal conversion unit, and the silicone oil clutch fan unit is provided with a silicone oil cavity and a spring plate switch for controlling the filling amount of silicone oil in the silicone oil cavity.
As a further improvement of the present invention, the dome switch is electrically connected to the control device, so as to adjust the on-frequency of the dome switch and adjust the filling amount of the silicone oil in the silicone oil cavity under the control of the control unit.
The invention has the beneficial effects that: the multi-sensor coupling engine temperature control system can monitor the temperature of the engine in real time by arranging the plurality of sensors; furthermore, by using a feedforward and feedback combined control strategy, on one hand, the response of the cooling device to the working condition and the environmental change of the engine is improved through the MAP feedforward controller, and meanwhile, the power consumption of each part in the cooling system is considered; on the other hand, the PID feedback controller controls the temperature of the cooling liquid in the cooling device to be a designated value, so that the increase of the loss and the oil consumption of the engine when the cooling requirement is low is avoided on the basis of fully utilizing the inertia of the engine.
Drawings
FIG. 1 is a block diagram of a multi-sensor coupled engine temperature control system according to the present invention.
Fig. 2 is a block diagram schematically illustrating the structure of the temperature control system of fig. 1.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
It is to be understood that in the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1, a multi-sensor coupled engine temperature control system 100 according to the present invention is shown. The multi-sensor coupling engine temperature control system 100 comprises an engine 1 and a temperature control system 2 connected to the engine 1.
The engine 1 is used for driving the automobile to run, and the temperature control system 2 is connected to the engine 1 and is used for controlling the engine 1 to run at a proper temperature so as to ensure the service life of the engine 1.
Referring to fig. 2 in conjunction with fig. 1, the temperature control system 2 includes a collecting device 21 connected to the engine 1, a cooling device 22 connected to the engine 1, and a control device 23 for controlling the operation of the cooling device 22. The collecting device 21 is configured to collect the operating parameters of the engine 1 and the cooling device 22, so as to transmit the operating parameters to the control device 23 for performing a coupling calculation and adjusting the actual operating parameters of the cooling device 22, so that the engine 1 operates at a stable temperature.
Specifically, the acquisition device 21 includes a temperature sensor 211, a speed sensor 212, and a rotation speed sensor 213, which are electrically connected to the control device 23. The temperature sensor 211 is configured to measure an operating temperature of the engine 1 and a temperature of a use environment, and the speed sensor 212 is configured to measure an operating speed of the engine 1 during operation, for example, when the engine 1 is applied to an automobile, the operating speed of the engine 1 during operation is an operating speed of the automobile; the rotation speed sensor 213 is used to measure the rotation speed of the engine 1.
The cooling device 22 includes a fan cooling unit 221 and a liquid cooling unit 222. Specifically, the fan cooling unit 221 is provided with a signal conversion unit 223, and in the present invention, the fan cooling unit 221 is provided with a silicone oil clutch fan unit connected to the signal conversion unit 223, specifically, the silicone oil clutch fan unit is provided with a silicone oil chamber, a dome switch for controlling the filling amount of silicone oil in the silicone oil chamber, and a fan blade connected to the silicone oil chamber.
Furthermore, the spring plate switch is electrically connected with the control device, so that the opening frequency of the spring plate switch is adjusted under the control action of the control unit, the filling amount of the silicone oil in the silicone oil cavity is adjusted, and by the arrangement, the friction force in the meshing process of the silicone oil clutch fan gear can be changed according to the filling amount of the silicone oil, and the stepless accurate speed regulation of the fan cooling unit 221 is realized.
The liquid cooling unit 222 is electrically connected to the collecting device 21, and specifically, in a preferred embodiment of the present invention, the collecting device 21 is provided with three temperature sensors 211 for respectively measuring an ambient temperature of the engine, an inlet temperature of the engine, and a temperature of the coolant of the liquid cooling unit 222.
The control device 23 includes a coupling calculation device 231, and the coupling calculation device 231 is respectively in signal connection with the acquisition device 21 and the cooling device 22 to receive various signals acquired by the acquisition device 21 and calculate and obtain a control signal for controlling the operation of the cooling device 22.
In the present invention, the control device 23 is accommodated/partially accommodated in the engine 1, and when the multi-sensor coupled engine temperature control system 100 of the present invention is applied to an automobile, the main body of the control device 23 is a vehicle computer ECU, so that the structure of the multi-sensor coupled engine temperature control system 100 is simplified, the multi-sensor coupled engine temperature control system 100 of the present invention is conveniently integrated with engines of various automobiles, and the applicability of the multi-sensor coupled engine temperature control system 100 of the present invention is effectively improved.
Further, the coupling calculation device 231 includes a MAP feedforward controller 2311 and a PID feedback controller 2312, and the MAP feedforward controller 2311 is electrically connected to the temperature sensor 211, the speed sensor 212 and the rotation speed sensor 213 in the acquisition unit 21 respectively, so as to receive the working environment signal of the automobile engine acquired and transmitted by the acquisition unit 21.
Specifically, the MAP feedforward controller 2311 may be configured to improve a response to a working condition and an environmental change of the engine 1 according to the working environment signal of the engine 1 transmitted by the acquisition device 21, and may also consider power consumption of the multi-sensor coupled engine temperature control system 100.
The PID feedback controller 2312 is configured to receive the actual temperature signal of the engine 1 transmitted by the temperature sensor 211 and the target operating temperature of the engine 1. With such an arrangement, it is convenient for the control device 23 to feed back the temperature of the cooling liquid in the liquid cooling unit 222, and control the temperature of the liquid cooling unit 222 to be controlled and stabilized at a specified value.
Further, the control signal transmitted by the control device 23 is obtained by coupling calculation through the MAP feedforward controller 2311, and is corrected through the PID feedback controller 2312. Specifically, the signal conversion unit 223 may be configured to receive the control signal and modulate the control signal to obtain a pulse width signal PMW for controlling the operation of the fan cooling unit 221; with the arrangement, on one hand, the inertia of the engine 1 is fully utilized as a power source of the fan cooling unit 221, and on the other hand, the problems that when the fan cooling unit 221 and the engine 1 are only meshed through a simple gear or driven by a belt, the rotating speed of the fan cooling unit 221 changes along with the rotating speed of the engine singly, and accordingly when the heat dissipation target requirement is low, the loss of the engine 1 and the increase of oil consumption are caused by the excessive rotation of the fan cooling unit 221 are solved.
In summary, the multi-sensor coupled engine temperature control system 100 of the present invention is provided with a plurality of sensors, so as to monitor the temperature of the engine 1 in real time; furthermore, by using a combined control strategy of feedforward and feedback, on one hand, the response of the cooling device 22 to the working condition and environmental change of the engine 1 is improved by the MAP feedforward controller, and meanwhile, the power consumption of each part in the cooling system is considered; on the other hand, the PID feedback controller 2312 controls the temperature of the coolant in the cooling device 22 to a predetermined value, thereby making full use of the inertia of the engine 1 and avoiding an increase in the loss and fuel consumption of the engine 1 when the cooling demand is low.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present invention.
Claims (9)
1. The utility model provides a many sensings coupling engine temperature control system, includes the engine, connects the temperature control system on the engine which characterized in that: the temperature control system comprises a collecting device connected to the engine, a cooling device connected to the engine and a control device used for controlling the operation of the cooling device, wherein the collecting device is used for collecting the operation parameters of the engine and the cooling device so as to transmit the operation parameters to the control device for coupling calculation and adjusting the actual operation parameters of the cooling device, so that the engine operates at a stable temperature.
2. The multi-sensor coupled engine temperature control system of claim 1, wherein: the acquisition device comprises a temperature sensor, a speed sensor and a rotating speed sensor which are respectively and electrically connected with the control device.
3. The multi-sensor coupled engine temperature control system of claim 2, wherein: the temperature sensors are at least three and used for measuring the ambient temperature of the engine in use and the actual use temperature of the engine.
4. The multi-sensor coupled engine temperature control system of claim 2, wherein: the speed sensor is used for measuring the running speed of the engine during working, and the rotating speed sensor is used for measuring the rotating speed of the engine.
5. The multi-sensor coupled engine temperature control system of claim 1, wherein: the control device comprises a coupling calculation device which is respectively in signal connection with the acquisition device and the cooling device so as to receive various signals acquired by the acquisition device and calculate and acquire a control signal for controlling the operation of the cooling device.
6. The multi-sensor coupled engine temperature control system of claim 5, wherein: the coupling calculation device comprises a MAP feedforward controller and a PID feedback controller, and the control signal is obtained through the coupling calculation of the MAP feedforward controller and is corrected through the PID feedback controller.
7. The multi-sensor coupled engine temperature control system of claim 1, wherein: the cooling device comprises a fan cooling unit and a liquid cooling unit, wherein the fan cooling unit is provided with a signal conversion unit so as to control the fan cooling unit to operate at a rotating speed different from that of the engine.
8. The multi-sensor coupled engine temperature control system of claim 7, wherein: the fan cooling unit comprises a silicone oil clutch fan unit connected with the signal conversion unit, and the silicone oil clutch fan unit is provided with a silicone oil cavity and a spring plate switch used for controlling the filling amount of silicone oil in the silicone oil cavity.
9. The multi-sensor coupled engine temperature control system of claim 8, wherein: the spring plate switch is electrically connected with the control device, so that the opening frequency of the spring plate switch is adjusted under the control action of the control unit, and the filling amount of the silicone oil in the silicone oil cavity is adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910782610.4A CN110566334A (en) | 2019-08-23 | 2019-08-23 | Multi-sensing coupling engine temperature control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910782610.4A CN110566334A (en) | 2019-08-23 | 2019-08-23 | Multi-sensing coupling engine temperature control system |
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| CN110566334A true CN110566334A (en) | 2019-12-13 |
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| CN201910782610.4A Pending CN110566334A (en) | 2019-08-23 | 2019-08-23 | Multi-sensing coupling engine temperature control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| CN205908357U (en) * | 2016-08-13 | 2017-01-25 | 安徽合力股份有限公司 | Automatically controlled cooling system of forklift engine |
| CN107664058A (en) * | 2016-07-28 | 2018-02-06 | 长城汽车股份有限公司 | Method for controlling cooling system, system and the vehicle of engine |
| CN107869383A (en) * | 2017-11-03 | 2018-04-03 | 吉林大学 | Automobile engine heat management system models and control method |
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2019
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Patent Citations (5)
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| CN104314661A (en) * | 2014-11-03 | 2015-01-28 | 上海科泰电源股份有限公司 | Cooling fan speed adjusting device of diesel generating set |
| CN204253162U (en) * | 2014-11-03 | 2015-04-08 | 上海科泰电源股份有限公司 | A kind of diesel generating set radiation fan arrangements for speed regulation |
| CN107664058A (en) * | 2016-07-28 | 2018-02-06 | 长城汽车股份有限公司 | Method for controlling cooling system, system and the vehicle of engine |
| CN205908357U (en) * | 2016-08-13 | 2017-01-25 | 安徽合力股份有限公司 | Automatically controlled cooling system of forklift engine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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