CN108952931B - Control method and system for multi-speed electromagnetic speed regulation water pump - Google Patents
Control method and system for multi-speed electromagnetic speed regulation water pump Download PDFInfo
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- CN108952931B CN108952931B CN201810615631.2A CN201810615631A CN108952931B CN 108952931 B CN108952931 B CN 108952931B CN 201810615631 A CN201810615631 A CN 201810615631A CN 108952931 B CN108952931 B CN 108952931B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 166
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000033228 biological regulation Effects 0.000 title description 6
- 238000000926 separation method Methods 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims description 12
- 230000000694 effects Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000011217 control strategy Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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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
- F01P7/08—Controlling of coolant flow the coolant being cooling-air by cutting in or out of pumps
- F01P7/081—Controlling of coolant flow the coolant being cooling-air by cutting in or out of pumps using clutches, e.g. electro-magnetic or induction clutches
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a control method and a system for a multi-speed electromagnetic speed-regulating water pump, when the working curves of the electromagnetic speed-regulating water pump are two or more than two, when the required rotating speed is positioned between any two adjacent working curves, the curve with higher rotating speed in the working curves is circularly combined and separated corresponding to a clutch in a certain period, the clutch is in an intermittent combination state, the rotating speed of a water pump impeller is continuously switched between a first speed and a second speed, and the simulated rotating speed of the water pump is always positioned between the two adjacent working curves by adjusting the ratio of the combination time to the separation time.
Description
Technical Field
The invention relates to a control method and a control system for a multi-speed electromagnetic speed-regulating water pump.
Background
The water pump is an indispensable part of an automobile cooling system. The water pump consumes partial power of the engine, along with increasingly strict emission regulations, the direct-drive water pump easily causes slow temperature rise of the engine, the engine cannot quickly reach the optimal working temperature, fuel consumption and emission level of the engine are affected, and the water pump is controllable to be a necessary trend.
The existing electromagnetic speed-regulating water pump in the market at present is divided into two types of two-speed and three-speed, but along with the continuous promotion of emission standard, in order to satisfy the demand of thermal management, the engine is more and more accurate to water pump flow demand, and two speed or three speed-regulating water pump alone can't satisfy customer's demand, if will accomplish the structure of more multispeed to the water pump, can directly receive the restriction of engine space and cost.
Disclosure of Invention
The invention provides a control method and a control system for a multi-speed electromagnetic speed-regulating water pump, aiming at solving the problems.
In order to achieve the purpose, the invention adopts the following technical scheme:
the first purpose of the invention is to provide a control method for a multi-speed electromagnetic speed-regulating water pump, when the required rotating speed is between any two adjacent operating curves, the operating curves with higher rotating speed in the operating curves are circularly combined and separated corresponding to a clutch in a certain period, so that the clutch is in an intermittent combination state, the rotating speed of a water pump impeller is continuously switched between a first speed and a second speed, and the simulated rotating speed of the water pump is always between the two adjacent operating curves by adjusting the ratio of the combination time to the separation time.
Further, the period is 1 second to 60 seconds.
Further, the first speed is higher than the second speed, and when the required rotating speed of the water pump is higher than the second speed of the water pump within a certain range, the water pump is controlled to work according to the second speed;
or when the required rotating speed of the water pump is in the middle rotating speed within the set range between the first speed and the second speed, controlling the water pump to work according to the middle rotating speed;
or when the required rotating speed of the water pump is lower than the first speed of the water pump within a certain range, controlling the water pump to work at the first speed.
Furthermore, the certain range is 5% -10% of the rotating speed of the belt pulley.
Further, the clutch is engaged and disengaged once or a plurality of times during the certain period.
Further, two adjacent working cycles of the speed-regulating water pump can be the same or different.
Further, in the method, the adjustment of the ratio of the combination time to the separation time is replaced by the control of the on-off duration of the direct current.
Further, when the clutch corresponding to the interval upper limit curve is a flexible transmission clutch, the working period of the clutch is 2-30 seconds;
or when the interval upper limit curve corresponds to that the clutch is a rigid transmission clutch, the working period of the clutch is 3-60 seconds.
Furthermore, when the clutch corresponding to the interval upper limit curve is a rigid transmission clutch, the clutch combination frequency needs to be limited, and the limitation frequency is not more than 60 times per minute;
when the interval upper limit curve corresponds to a clutch which is a rigid transmission clutch, the clutch combination frequency needs to be limited, and the recommended combination frequency is below 30 times per minute.
Further, when the multi-speed electromagnetic speed-regulating water pump is a double-flexible speed-regulating water pump, the first rotating speed is set to be 50% -90%, the second speed is set to be 10% -40%, and the difference value between the first speed and the second speed is 10% -80%.
The rotating speed is as follows: the rotating speed of the impeller of the water pump is proportional to the rotating speed of the belt pulley.
A second object of the present invention is to provide a control system for a multi-speed electromagnetic speed-regulating water pump, running on a processor or a memory, configured to execute the following control instructions:
when the working curves of the electromagnetic speed-regulating water pump are two or more than two, when the required rotating speed is positioned between any two adjacent working curves, the curve with the higher rotating speed in the working curves is circularly combined and separated corresponding to the clutch in a certain period, so that the clutch is in an intermittent combination state, the rotating speed of the impeller of the water pump is continuously switched between a first speed and a second speed, and the simulated rotating speed of the water pump is always positioned between the two adjacent working curves by adjusting the proportion of the combination time and the separation time.
Compared with the prior art, the invention has the beneficial effects that:
the invention has simple control process, can realize the accurate control of the flow of the water pump on the basis of the multi-speed-regulating water pump, and achieves the effect of stepless speed regulation of the water pump.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a schematic structural diagram of a two-speed electromagnetic speed-regulating water pump;
FIG. 2 is a graph of the two-speed-adjustable water pump;
FIG. 3 is a schematic structural diagram of a double-flexible three-speed electromagnetic speed-regulating water pump;
FIG. 4 is a graph of the operation of the dual flexible three-speed electromagnetic speed-regulating water pump;
FIG. 5 is a schematic illustration of a control strategy of the present invention;
FIG. 6 is a schematic illustration of the interval rotational speed of the control strategy of the present invention;
7-9 are schematic diagrams of interval rotating speed corresponding to the on-off ratio of the clutch.
The specific implementation mode is as follows:
the invention is further described with reference to the following figures and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In the present invention, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only terms of relationships determined for convenience of describing structural relationships of the parts or elements of the present invention, and are not intended to refer to any parts or elements of the present invention, and are not to be construed as limiting the present invention.
In the present invention, terms such as "fixedly connected", "connected", and the like are to be understood in a broad sense, and mean either a fixed connection or an integrally connected or detachable connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be determined according to specific situations by persons skilled in the relevant scientific or technical field, and are not to be construed as limiting the present invention.
As described in the background art, a simple two-speed or three-speed-adjustable water pump cannot meet the requirements of customers, if the water pump is to be of a multi-speed structure, the water pump is directly limited by the space and cost of an engine, and the details are described by taking the existing speed-adjustable water pump structure as an example:
as shown in fig. 1, the structural schematic diagram of the two-speed electromagnetic speed-regulating water pump can realize the switching of the water pump impeller between high and low rotating speeds by switching on and off the electromagnetic coil, and the working curve is shown in fig. 2:
the working principle is as follows: when the engine is just started, the electromagnetic speed-regulating water pump clutch is separated, the water pump impeller works at a low speed under the action of the magnet, and the temperature of the engine can be rapidly increased; when the water temperature of the engine rises to a set value, the electromagnetic speed-regulating water pump clutch is combined, the attraction disc is attached to the end face of the belt pulley, the belt pulley drives the water pump impeller to directly drive the water pump impeller to work through the attraction disc, and the rotating speed of the water pump impeller is the same as that of the belt pulley, so that sufficient coolant flow is provided for the engine.
However, with the improvement of the whole vehicle on temperature control, some problems are exposed in the working mode of the water pump:
1. the low-speed and low-speed rotation speed of the water pump is too low: if the quantity of the magnets in the structure is small, the rotating speed of the impeller is relatively low when the water pump is at a low speed, the temperature of the engine can be rapidly raised at the moment, the discharge temperature of the engine is high, and the discharge level of the engine can be raised, but the lower rotating speed of the water pump can cause the water pressure generated by the water pump to be low and cannot overcome the resistance of a pipeline, the water flow in warm air and other parts of pipelines is insufficient, so that the warm air in a cab is insufficient, and meanwhile, part of positions needing cooling cannot obtain sufficient water flow, such as a retarder used by part of vehicle;
2. the low-speed rotating speed of the water pump is too high: if magnet quantity is more in the structure, impeller rotational speed will be higher relatively when the water pump is low-speed, can promote the warm braw effect like this, guarantees each spare part of vehicle and fully cools off simultaneously, but will cause the engine temperature lower, and discharge temperature reduces, and the whole car of cold-start stage emission level reduces, and the value that the engine power consumption was saved to the water pump also can reduce.
Admittedly, the electromagnetic speed-regulating water pump makes certain contribution to fuel saving and emission of the engine, but when the engine is required to be further lifted, the two-speed electromagnetic speed-regulating water pump cannot be fully met.
For this market, a corresponding double-flexible three-speed-regulating water pump is developed to solve the above problems, and the structure of the double-flexible three-speed-regulating water pump is shown in fig. 3: the three-speed-regulating water pump can realize the switching of the water pump impeller between three rotating speeds by switching on and off the power of the large electromagnetic coil and the small electromagnetic coil, and the working curve of the three-speed-regulating water pump is shown in figure 4:
the working principle is as follows: when the engine is just started, two electromagnetic coils of the electromagnetic speed-regulating water pump are powered off simultaneously, a water pump impeller works at a low speed under the action of a first-speed magnet, the ideal working rotating speed is 20% -40%, and the temperature of the engine can be rapidly increased at the moment; when the water temperature of the engine rises to a set value, a small coil of the electromagnetic speed-regulating water pump is electrified, a small suction disc is attached to the end face of the belt pulley, the small suction disc drives a second-speed magnet on the bracket to rotate through a spring piece, the first-speed magnet and the second-speed magnet act together to drive a water pump impeller to work at a higher rotating speed, the ideal rotating speed is 60% -80%, and the heat dissipation requirement of the engine under most conditions can be met; when the vehicle is in heavy load or climbs a slope, the water temperature of the engine can continuously rise, when the temperature rises to a set value, the large coil is electrified, the large attraction disc is attached to the end face of the belt pulley, the belt pulley drives the water pump impeller to directly drive the water pump impeller to work through the large attraction disc, and at the moment, the rotating speed of the water pump impeller is the same as that of the belt pulley.
The structure can make up the defect of the two-speed-regulating water pump to a certain extent, but the requirement of the vehicle on water flow under different working conditions is changed at any time, the three working rotating speeds still cannot completely meet the use requirement, and if the rotating speed of the water pump clutch is continuously increased, the structure of the water pump is very complex, and the cost is obviously increased.
In order to solve the problems, the invention provides a control strategy based on the hardware of the double-flexible three-speed electromagnetic speed regulation water pump so as to achieve the effect of stepless speed regulation of the water pump.
The specific scheme is as follows: when the required rotating speed is positioned between any two adjacent working curves, the curve with higher rotating speed in the two working curves is circularly combined and separated in a certain period according to a certain rule corresponding to a clutch, so that the clutch is in an intermittent combination state, the rotating speed of a water pump impeller is continuously switched between high speed and low speed, and the aim that the simulated rotating speed of the water pump is positioned between the two working curves is fulfilled by adjusting the time proportion of combination and separation.
Of course, the on-off time of the direct current can be controlled.
The adjustment period of the water pump clutch can be between 1 second and 60 seconds;
when the required rotating speed of the water pump is in a certain range above the low-speed working rotating speed of the water pump, the water pump can be controlled to work at a low speed; the higher range can be 5% -10% of the rotating speed of the belt pulley;
when the required rotating speed of the water pump is in a certain range above or below the middle rotating speed of the water pump, the water pump can be controlled to work at the middle rotating speed;
the higher range can be 5% -10% of the rotating speed of the belt pulley;
the lower range may be 5% to 10% of the pulley speed.
When the required rotating speed of the water pump is in a certain range below the high-speed working rotating speed of the water pump, the water pump can be controlled to work at a high speed; the lower range may be 5% to 10% of the pulley speed.
In a certain period, the clutch can be combined and separated once or for multiple times;
the two adjacent working cycles of the speed-regulating water pump can be the same or different.
When the clutch corresponding to the interval upper limit curve is a flexible transmission clutch, the working period of the clutch can be shorter and can be 2-30 seconds;
when the clutch corresponding to the interval upper limit curve is a rigid transmission clutch, the working period of the clutch is long and can be 3-60 seconds;
when the clutch corresponding to the interval upper limit curve is a rigid transmission clutch, the clutch combination frequency needs to be limited, and the limiting frequency is not more than 60 times per minute;
when the clutch corresponding to the interval upper limit curve is a rigid transmission clutch, the clutch combination frequency needs to be limited, and the suggested combination frequency is below 30 times per minute;
the two-speed (i.e. high-speed) rotating speed of the used double-flexible speed-regulating water pump is set to be as high as possible, and can be 50-90%;
the first speed (namely low speed) of the double-flexible speed-regulating water pump is set to be as low as possible, and can be 10-40%;
the difference value between the first speed and the second speed of the used double-flexible speed-regulating water pump is set to be as high as possible and can be 10-80%.
As an exemplary embodiment:
1. the double flexible three-speed regulating water pump is set to have a two-speed rotating speed as high as possible;
2. the double-flexible three-speed regulating water pump sets a first speed as low as possible;
for example, the first speed of the three-speed adjustable water pump is set to 20%, the second speed is set to 80%, and the third speed is set to 100%.
3. When the ECU judges that the required water pump flow corresponds to the impeller rotating speed and is in a range near a certain working curve, the power-on and power-off state of a speed-regulating water pump coil can be directly controlled, the range of the working curve can be 5%, when the engine judges that the required water pump flow corresponds to the impeller rotating speed and is between 20% and 25%, the first speed of the water pump can be directly controlled to work, when the engine judges that the required water pump flow corresponds to the impeller rotating speed and is between 75% and 85%, the second speed of the water pump can be directly controlled to work, and when the engine judges that the required water pump flow corresponds to the impeller rotating speed and is more than 95%, the third speed of the.
4. When the ECU judges that the required flow of the water pump is between two working curves corresponding to the rotating speed of the impeller, the curve with the higher rotating speed in the two working curves is circularly combined and separated in a certain period according to a certain rule, so that the clutch is in an intermittent combination state, the rotating speed of the impeller of the water pump is continuously switched between high speed and low speed, the effect of simulating the middle rotating speed of the water pump is realized, and the more reasonable working period of the clutch is 1-60 seconds. For example, the operating frequency of the clutch is set to be 20 seconds, when the ECU judges that the water pump flow corresponds to 50% of the rotating speed (the MAP needs to be calibrated in the early period for confirming the rotating speed value), the clutch needs to be controlled to operate at the second speed for 8S, and to operate at the first speed for 12S (the MAP needs to be calibrated in the early period for confirming the operating time of the clutch), and finally the required value of the engine for the water pump flow is achieved.
As shown in fig. 5, the operation interval of the electromagnetic speed-regulating water pump can be divided into 5 parts, and it is assumed that the first speed of the water pump is set to 20%, the second speed is set to 80%, and the third speed is set to 100%;
1. when the whole vehicle judges that the required water pump impeller rotating speed is in the interval 1, the electromagnetic speed-regulating water pump controls the impeller to rotate at a first speed, the interval lower limit is the first speed of the electromagnetic speed-regulating water pump and can be 20%, and the interval upper limit can be increased by 5% -10% on the basis of 20%, and is about 25% -30%.
2. When the whole vehicle judges that the required water pump impeller rotating speed is located in a certain rotating speed curve in a section 2, for example, when the rotating speed is judged to be a section rotating speed 1, an ECU is required to input an intermittent on-off signal to a small coil of an electromagnetic speed-regulating water pump to control the rotating speed of the electromagnetic speed-regulating water pump to work alternately between a first speed and a second speed, the current on-off condition is shown in FIG. 7, the power-on time and the power-off time are the same, the effect of simulating the output flow of the water pump at the section rotating speed 1 is achieved through continuous alternation of the rotating speed, and when the corresponding on-off time proportion is 1:2 and 1:3, the rotating speed of the water pump can correspondingly achieve the effects of the section; when the water pump works at a second speed, the small coil is electrified to enable the lower suction disc to be attached to the end face of the belt pulley, the belt pulley drives the small suction disc through friction, the small suction disc drives the magnet to generate an electromagnetic induction phenomenon, the space magnetic field drives the impeller of the water pump to work at the second speed, the impact force between the small suction disc and the belt pulley is small due to the existence of the space magnetic field, the abrasion between the small suction disc and the belt pulley can be controlled to be very small, the service life of the clutch can be greatly prolonged, and the small suction disc is allowed to work frequently; the reasonable working period of the clutch is 2-20 seconds.
For example, the duty cycle may be set to 20 seconds, and when the required rotation speed is the interval rotation speed 1, the power-on time is 10 seconds, and the power-off time is 10 seconds.
3. When the whole vehicle judges that the required water pump impeller rotating speed is in a range 3, the electromagnetic speed-regulating water pump controls the impeller to rotate at two speeds, the lower limit of the range can be 5% -10% lower than the two-speed rotating speed of the electromagnetic speed-regulating water pump and is 70% -75%, and the upper limit of the range can be 5% -10% higher than the two-speed rotating speed of the electromagnetic speed-regulating water pump and is about 85% -90%.
4. When the whole vehicle judges that the required rotating speed of the impeller of the water pump is in a section 4, an ECU (electronic control unit) is required to correctly input an intermittent on-off signal to a large coil of the electromagnetic speed-regulating water pump, the small coil keeps a power-on state, the rotating speed of the electromagnetic speed-regulating water pump is controlled to alternately work between a third speed and a second speed, and the effect of simulating intermediate flow of the water pump is achieved by continuously alternating the rotating speed; the reasonable working cycle of the clutch is 20-60 seconds, and the control mode is the same as the rotating speed interval 2; the difference from the section 2 is that when the difference between the second-speed rotation speed and the third-speed rotation speed is set to be relatively large, the engagement frequency needs to be controlled to extend the service life of the clutch portion.
5. When the whole vehicle judges that the required water pump impeller rotating speed is in the interval 5, the large coil of the electromagnetic speed-regulating water pump is electrified to drive the water pump to work at full speed, the upper limit of the interval 5 is 100% of the rotating speed, and the lower limit is 90% -95%.
The numbers in the above embodiments are merely examples, and are not limited thereto, and in other implementation cases, may be adjusted according to specific situations.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (9)
1. A control method for a multi-speed electromagnetic speed-regulating water pump is characterized by comprising the following steps: when the required rotating speed is positioned between any two adjacent working curves, the curve with higher rotating speed in the working curves is circularly combined and separated in a certain period corresponding to the clutch, so that the clutch is in an intermittent combination state, the rotating speed of the impeller of the water pump is continuously switched between a first speed and a second speed, and the simulated rotating speed of the water pump is always positioned between the two adjacent working curves by adjusting the ratio of the combination time to the separation time; and in the certain period, the clutch is combined and separated once or combined and separated for multiple times.
2. The control method for the multi-speed electromagnetic speed-regulating water pump as claimed in claim 1, characterized in that: the period is 1 second to 60 seconds.
3. The control method for the multi-speed electromagnetic speed-regulating water pump as claimed in claim 1, characterized in that: the first speed is higher than the second speed, and when the required rotating speed of the water pump is higher than the second speed of the water pump within a certain range, the water pump is controlled to work at the second speed;
or when the required rotating speed of the water pump is in the middle rotating speed within the set range between the first speed and the second speed, controlling the water pump to work according to the middle rotating speed;
or when the required rotating speed of the water pump is lower than the first speed of the water pump within a certain range, controlling the water pump to work at the first speed.
4. A control method for a multi-speed electromagnetic speed-regulating water pump as claimed in claim 3, characterized in that: the certain range is 5% -10% of the rotating speed of the belt pulley.
5. The control method for the multi-speed electromagnetic speed-regulating water pump as claimed in claim 1, characterized in that: the on-off time control through direct current is replaced by adjusting the proportion of the combination time to the separation time.
6. The control method for the multi-speed electromagnetic speed-regulating water pump as claimed in claim 1, characterized in that: when the clutch corresponding to the interval upper limit curve is a flexible transmission clutch, the working period of the clutch is 2-30 seconds;
or when the interval upper limit curve corresponds to that the clutch is a rigid transmission clutch, the working period of the clutch is 3-60 seconds.
7. The control method for the multi-speed electromagnetic speed-regulating water pump as claimed in claim 1, characterized in that: when the clutch corresponding to the interval upper limit curve is a rigid transmission clutch, the clutch combination frequency needs to be limited, and the limiting frequency is not more than 60 times per minute;
or, when the interval upper limit curve corresponds to the clutch being a rigid transmission clutch, the clutch combination frequency needs to be limited, and the suggested combination frequency is below 30 times per minute.
8. The control method for the multi-speed electromagnetic speed-regulating water pump as claimed in claim 1, characterized in that: when the multi-speed electromagnetic speed-regulating water pump is a double-flexible speed-regulating water pump, the first rotating speed is set to be 50% -90%, the second speed is set to be 10% -40%, and the difference value between the first speed and the second speed is 10% -80%.
9. A control system for a multi-speed electromagnetic speed-regulating water pump is characterized in that: run on a processor or memory, configured to execute the following control instructions:
when the working curves of the electromagnetic speed-regulating water pump are two or more than two, when the required rotating speed is positioned between any two adjacent working curves, the curve with the higher rotating speed in the working curves is circularly combined and separated corresponding to the clutch in a certain period, so that the clutch is in an intermittent combination state, the rotating speed of the impeller of the water pump is continuously switched between a first speed and a second speed, and the simulated rotating speed of the water pump is always positioned between the two adjacent working curves by adjusting the proportion of the combination time and the separation time.
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|---|---|---|---|---|
| CN105604673A (en) * | 2015-09-30 | 2016-05-25 | 龙口中宇机械有限公司 | Safety type multi-speed electromagnetic fan clutch control device and control method |
| CN206246558U (en) * | 2016-11-23 | 2017-06-13 | 苏州睿昕汽车配件有限公司 | A kind of two fast water pump electromagnetic clutch |
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| CN108952931A (en) | 2018-12-07 |
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Effective date of registration: 20220223 Address after: 265716 Longkou Economic Development Zone, Yantai, Shandong, Longkou City Patentee after: LONGKOU ZHONGYU THERMAL MANAGEMENT SYSTEM TECHNOLOGY Co.,Ltd. Address before: 265716 Longkou Economic Development Zone, Yantai City, Shandong Province Patentee before: LONGKOU ZHONGYU MACHINERY Co.,Ltd. |
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Denomination of invention: A control method and system for multi speed electromagnetic speed regulating water pump Effective date of registration: 20221104 Granted publication date: 20200519 Pledgee: Yantai Xincai Haohan Investment Center (L.P.) Pledgor: LONGKOU ZHONGYU THERMAL MANAGEMENT SYSTEM TECHNOLOGY Co.,Ltd. Registration number: Y2022370000143 |
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Date of cancellation: 20230619 Granted publication date: 20200519 Pledgee: Yantai Xincai Haohan Investment Center (L.P.) Pledgor: LONGKOU ZHONGYU THERMAL MANAGEMENT SYSTEM TECHNOLOGY Co.,Ltd. Registration number: Y2022370000143 |
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Denomination of invention: A Control Method and System for Multi speed Electromagnetic Speed Regulating Water Pump Granted publication date: 20200519 Pledgee: Wang Xiaodong Pledgor: LONGKOU ZHONGYU THERMAL MANAGEMENT SYSTEM TECHNOLOGY Co.,Ltd. Registration number: Y2024980021236 |