CN104863684B - The monitoring method and monitoring system of vehicle and its cooling fan motor - Google Patents
The monitoring method and monitoring system of vehicle and its cooling fan motor Download PDFInfo
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- CN104863684B CN104863684B CN201510312865.6A CN201510312865A CN104863684B CN 104863684 B CN104863684 B CN 104863684B CN 201510312865 A CN201510312865 A CN 201510312865A CN 104863684 B CN104863684 B CN 104863684B
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- 238000001816 cooling Methods 0.000 title claims abstract description 70
- 238000012544 monitoring process Methods 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000002159 abnormal effect Effects 0.000 claims description 12
- 230000005856 abnormality Effects 0.000 claims description 3
- 230000006870 function Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 230000017525 heat dissipation Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/14—Safety means against, or active at, failure of coolant-pumps drives, e.g. shutting engine down; Means for indicating functioning of coolant pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
- F02D31/001—Electric control of rotation speed
-
- 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
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
- F01P2005/025—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers using two or more air pumps
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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
- F01P2050/00—Applications
- F01P2050/22—Motor-cars
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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)
- Control Of Electric Motors In General (AREA)
Abstract
The invention discloses a kind of monitoring method of the cooling fan motor of vehicle, wherein, vehicle includes engine management system, and the cooling fan motor of vehicle includes main fan motor and secondary fan electromotor, and the monitoring method includes：Engine management system sends control signal so that main fan motor and/or secondary fan electromotor are run according to control signal；Engine management system receives the feedback signal of main fan motor and/or secondary fan electromotor respectively, and according to feedback signal and control signal judge respectively main fan motor and/or secondary fan electromotor whether normal operation.The monitoring method can realize the control to cooling fan motor, and the running status of cooling fan motor is monitored, and more meet demand for security.The invention also discloses a kind of monitoring system of cooling fan motor of vehicle and with the monitoring system vehicle.
Description
Technical Field
The invention belongs to the technical field of vehicles, and particularly relates to a monitoring method and a monitoring system for a cooling fan motor of a vehicle, and the vehicle with the monitoring system.
Background
Safety is a very important issue in the vehicle industry. With the rapid development of science and technology, the intelligent requirements of vehicles are also continuously improved, and the requirements of consumers on intelligent vehicles not only have the function of analyzing faults, but also can find the faults in advance, so that the fault occurrence rate is reduced to the minimum, and the safety factor of vehicle driving is improved.
The principle of a cooling fan control system for a vehicle is shown in fig. 1, and the cooling fan control system is mainly divided into two control states of high speed and low speed of a fan. When the Engine Management System 100 ' (EMS, Engine Management System) sends a Fan Low-speed operation signal, i.e., Fan Low signal, the Low-speed Fan relay 10 ' is closed, and the main Fan motor 20 ' operates at a Low speed; when the EMS transmits a Fan High-speed operation signal, i.e., a Fan High signal, the High-speed Fan relay 30 'and the sub-Fan relay 40' are simultaneously engaged, the main Fan motor 20 'operates at a High speed, and the sub-Fan motor 50' operates to satisfy the heat dissipation requirement.
It can be seen that, although the control system described above implements control over the cooling fan motor, it is still impossible to monitor whether the operating state of the cooling fan motor is normal after the control signal is sent out.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the present invention needs to provide a monitoring method for a cooling fan motor of a vehicle, which can control the cooling fan motor and monitor the operation state of the cooling fan motor, thereby meeting the safety requirement.
The invention also provides a monitoring system of the cooling fan motor of the vehicle and the vehicle with the system.
In order to solve the above problems, the present invention provides a monitoring method for a cooling fan motor of a vehicle, the vehicle including an engine management system, the cooling fan motor of the vehicle including a main fan motor and an auxiliary fan motor, the monitoring method comprising: the engine management system sending a control signal to cause the main fan motor and/or the auxiliary fan motor to operate according to the control signal; and the engine management system respectively receives feedback signals of the main fan motor and/or the auxiliary fan motor and respectively judges whether the main fan motor and/or the auxiliary fan motor normally operate or not according to the feedback signals and the control signals.
According to the monitoring method of the cooling fan motor of the vehicle, the control signal is sent by the engine management system to control the cooling fan motor, the feedback signal of the cooling fan motor is received, and whether the cooling fan motor works normally is judged according to the feedback signal and the control signal, so that the monitoring of the state of the cooling fan is realized, and a basis is provided for safe driving.
Wherein, the engine management system respectively judges whether the main fan motor and/or the auxiliary fan motor normally operate according to the feedback signal and the control signal specifically comprises: the engine management system judges whether the feedback signal is in a threshold range corresponding to the control signal; and if the feedback signal is within the threshold range, the engine management system judges that the main fan motor and/or the auxiliary fan motor normally operate.
Further, the monitoring method further includes: and if the feedback signal exceeds the threshold range, the engine management system controls the engine of the vehicle to reduce the speed to a preset rotating speed, so that the vehicle is reduced in speed, and danger is avoided.
Further, the method further comprises: and the engine management system sends a prompt signal to a combination meter of the vehicle to prompt, and reminds a driver to take corresponding solution measures.
In order to solve the above problems, another aspect of the present invention provides a monitoring system for a cooling fan motor of a vehicle, the monitoring system including: a cooling fan motor including a main fan motor and an auxiliary fan motor; a first main fan switch, a second main fan switch and an auxiliary fan switch; and the engine management system sends a control signal to control the on-off of the first main fan switch, the second main fan switch and the auxiliary fan switch so as to enable the main fan motor and/or the auxiliary fan motor to operate according to the control signal, receive a feedback signal of the main fan motor and/or the auxiliary fan motor, and respectively judge whether the main fan motor and/or the auxiliary fan motor normally operate according to the feedback signal and the control signal.
According to the monitoring system of the cooling fan motor of the vehicle, the engine management system sends the control signal to control the cooling fan motor, receives the feedback signal of the cooling fan motor, and further judges whether the cooling fan motor works normally according to the feedback signal and the control signal, so that the monitoring of the state of the cooling fan is realized, and a foundation is provided for safe driving.
Specifically, the engine management system is further configured to determine whether the feedback signal is within a threshold range corresponding to the control signal, and determine that the main fan motor and/or the auxiliary fan motor is/are operating normally when the feedback signal is within the threshold range.
Further, the engine management system is also used for controlling the engine of the vehicle to decelerate to a preset rotating speed when the feedback signal exceeds the threshold range, so that the vehicle decelerates and danger is avoided.
Further, the engine management system is also used for sending a prompt signal to a combination meter of the vehicle to prompt and remind a driver to take corresponding measures.
Based on the monitoring system, a vehicle is provided according to another embodiment of the present invention, and the vehicle includes the monitoring system for the cooling fan motor according to the above aspect.
According to the vehicle of the present invention, by adopting the monitoring system 100 of the embodiment of the above aspect, the operating state of the cooling fan motor can be monitored, the malfunction can be avoided, and the safety can be improved.
Drawings
Fig. 1 is a schematic diagram of a control system of a cooling fan motor in the related art;
FIG. 2 is a flow chart of a method of monitoring a cooling fan motor of a vehicle according to one embodiment of the present invention;
FIG. 3 is a graph illustrating deviation ranges of feedback voltages for different duty cycle control signals according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a monitoring system for a cooling fan motor of a vehicle according to one embodiment of the present invention; and
FIG. 5 is a block diagram of a vehicle according to one embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
A monitoring method and a monitoring system of a cooling fan motor of a vehicle and a vehicle having the monitoring system according to embodiments of the present invention are described below with reference to the accompanying drawings.
First, a method of monitoring a cooling fan motor of a vehicle according to an embodiment of the present invention will be described. Wherein the vehicle includes an engine management system and the cooling fan motor of the vehicle includes a main fan motor and an auxiliary fan motor.
Fig. 2 is a flowchart of a monitoring method of a cooling fan motor of a vehicle according to an embodiment of the present invention, as shown in fig. 2, the monitoring method including the steps of:
s1, the engine management system sends a control signal to cause the main fan motor and/or the auxiliary fan motor to operate according to the control signal.
For example, when an Engine Management System (EMS) sends a Fan Low-speed operation signal Fan Low, a Low-speed Fan relay is closed, and a main Fan motor operates at a Low speed according to a heat dissipation requirement; when the EMS sends a High-speed Fan running signal Fan High, the High-speed Fan relay and the auxiliary Fan relay are simultaneously attracted, the main Fan motor runs at High speed, and the auxiliary Fan motor runs. The EMS implements control of a cooling fan motor of the vehicle.
And S2, the engine management system respectively receives the feedback signals of the main fan motor and/or the auxiliary fan motor, and respectively judges whether the main fan motor and/or the auxiliary fan motor normally operate according to the feedback signals and the control signals.
For example, when the main fan motor is operated at a low speed, the EMS receives a feedback signal, such as a feedback voltage signal, of the main fan motor, and then the EMS determines whether the feedback voltage signal meets a requirement for sending a control signal, i.e., determines whether a feedback voltage value is within a normal working voltage range corresponding to the control signal, if the feedback signal is normal, the main fan motor is indicated to be working normally, otherwise, if the feedback signal is abnormal, the main fan motor is indicated to be working abnormally, so that monitoring of the operating state of the main fan motor can be realized, and a basis is provided for safe driving.
For another example, when the main fan motor is operated at a high speed and the auxiliary fan motor is operated, the EMS respectively receives feedback signals of the main fan motor and the auxiliary fan motor and judges whether the feedback signals correspond to a normal working voltage range of the control signal, if the feedback signals are normal, the EMS indicates that the main fan motor and the auxiliary fan motor are normal, and if the feedback signals are abnormal, the EMS judges that the main fan motor and/or the auxiliary fan motor are abnormal, so that the monitoring of the operating states of the main fan motor and the auxiliary fan motor can be realized, and a basis is provided for safe driving.
It can be seen that in the monitoring method of the cooling fan motor of the vehicle according to the embodiment of the present invention, the engine management system sends the control signal to control the cooling fan motor, and receives the feedback signal of the cooling fan motor, and further determines whether the cooling fan motor is working normally according to the feedback signal and the control signal, thereby implementing monitoring of the state of the cooling fan and providing a basis for safe driving.
Specifically, the EMS determines whether the feedback signal is within a threshold range corresponding to the control signal sent by the EMS, and if the feedback signal is within the threshold range, the engine management system determines that the main fan motor and/or the sub-fan motor operate normally.
In one embodiment of the present invention, as shown in fig. 3, a graph of deviation ranges of feedback signals (feedback voltages) under different duty ratio control signals is shown. And Umax and Umin are respectively the maximum value and the minimum value of the feedback signal under the normal condition of the cooling fan motor, and if the feedback signal exceeds the threshold range, the feedback signal is regarded as the abnormal working state. For example, the EMS sends a 95% duty ratio control signal, the main fan motor runs at a low speed, the EMS receives a feedback signal of the main fan motor as a voltage value a, if a is between the maximum value and the minimum value of the feedback voltage corresponding to the 95% duty ratio, the main fan motor is judged to be working normally, otherwise, the main fan motor is judged to be working abnormally. Similarly, when the main fan motor and the auxiliary fan motor are both operated, the EMS respectively receives feedback signals of the main fan motor and the auxiliary fan motor, and respectively determines whether the received feedback signals are normal to determine whether the main fan motor and the auxiliary fan motor are normal in operation.
Further, if the EMS judges that the feedback signal is abnormal, that is, if the feedback signal exceeds the threshold range defined by Umax and Umin of the normal feedback signal corresponding to the control signal, the EMS enters an alarm reminding function mode, for example, the engine management system controls the engine of the vehicle to slow down to a preset rotating speed, that is, the engine reduces the rotating speed, and further the vehicle speed is reduced, so as to ensure the driving safety.
And if the feedback signal exceeds the threshold range corresponding to the control signal, the engine management system also sends a prompt signal to a combination meter of the vehicle for prompting. For example, the EMS sends an effective signal of an alarm lamp to the combination meter through a CAN bus of the vehicle, and then the combination meter directly lights the fan abnormality identification, so that a driver CAN be reminded that the cooling fan motor is abnormal, measures CAN be taken as soon as possible, and danger is avoided.
In summary, in the monitoring method for the cooling fan motor of the vehicle according to the embodiment of the present invention, feedback signals of the main fan motor and the auxiliary fan motor are additionally received on the conventional control system, and whether the working state of the cooling fan motor is executed according to the control signals is monitored at any time, so that a fault is avoided, and a basis is provided for safe driving. In addition, when the cooling fan is judged to work abnormally, a combined instrument of the vehicle is used for prompting, a driver is reminded to take corresponding measures, and the engine is controlled to reduce the speed so as to reduce the speed of the vehicle, so that danger is avoided.
Based on the above description, another embodiment of the present invention provides a monitoring system for a cooling fan motor of a vehicle.
Fig. 4 is a block diagram of a monitoring system of a cooling fan motor of a vehicle according to an embodiment of the present invention, and as shown in fig. 4, the monitoring system 100 includes a cooling fan motor including a main fan motor 50 and a sub fan motor 60, a first main fan switch 10, a second main fan switch 20, and a sub fan switch 30, and an engine management system 40.
The engine management system 40 sends a control signal to control the on/off of the first main fan switch 10, the second main fan switch 20, and the sub-fan switch 30 so that the main fan motor and/or the sub-fan motor operate according to the control signal. For example, when the engine management system 40(EMS) transmits a fan low speed operation signal according to a heat dissipation requirement, the first main fan switch 10 is closed and the main fan motor 50 is operated at a low speed; when the EMS transmits a fan high-speed operation signal, the second main fan switch 20 and the sub fan switch 30 are simultaneously closed, the main fan motor 50 is operated at a high speed, and the sub fan motor 60 is operated. The EMS implements control of a cooling fan motor of the vehicle.
After the cooling Fan motor is started, the EMS receives a feedback signal of the Main Fan motor 50 and/or the sub Fan motor 60, for example, in fig. 4, the EMS connects the Main Fan motor 50 and the sub Fan motor 60 through the signal line 1 and the signal line 2, respectively, to receive feedback signals, i.e., a feedback signal Main Fan F/B of the Main Fan motor 50 and a feedback signal Secondary Fan F/B of the sub Fan motor 60, respectively, and determines whether the Main Fan motor 50 and/or the sub Fan motor 60 are normally operated, respectively, according to the feedback signal and the control signal. For example, when the main fan motor 50 is operated at a low speed, the EMS receives a feedback signal, such as a feedback voltage signal, from the main fan motor 50, and the EMS determines whether the feedback voltage signal meets a requirement for sending a control signal, that is, determines whether a feedback voltage value is within a normal operating voltage range corresponding to the control signal, if the feedback signal is normal, it indicates that the main fan motor 50 is operating normally, and otherwise, if the feedback signal is abnormal, it indicates that the main fan motor 50 is operating abnormally, so that monitoring of the operating state of the main fan motor 50 can be achieved, and a basis is provided for safe driving.
For another example, when the main fan motor 50 is operated at a high speed and the sub fan motor 60 is operated, the EMS respectively receives the feedback signals of the main fan motor 50 and the sub fan motor 60 and determines whether the feedback signals correspond to the normal operating voltage range of the control signals, if the feedback signals are normal, it indicates that the main fan motor 50 and the sub fan motor 60 are operating normally, and if the feedback signals are abnormal, it determines that the main fan motor 50 and/or the sub fan motor 60 are not operating normally, so that the monitoring of the operating states of the main fan motor 50 and the sub fan motor 60 can be realized, and a basis is provided for safe driving.
It can be seen that the monitoring system 100 for a cooling fan motor of a vehicle according to an embodiment of the present invention sends a control signal to control the cooling fan motor through the engine management system 40, receives a feedback signal of the cooling fan motor, and further determines whether the cooling fan motor is working normally according to the feedback signal and the control signal, thereby implementing monitoring of a cooling fan state and providing a basis for safe driving.
In the process in which the EMS determines whether the cooling fan motor operates normally according to the feedback signal and the control signal, specifically, as shown in fig. 3, the engine management system 40 determines whether the feedback signal is within a threshold range defined by Umax and Umin corresponding to the control signal, and determines that the main fan motor 50 and/or the sub-fan motor 60 operates normally when the feedback signal is within the threshold range.
Further, when the feedback signal exceeds the threshold range, the vehicle enters an alarm reminding function mode, for example, the engine management system 40 controls the engine of the vehicle to slow down to a preset rotation speed, that is, the engine slows down, and further the vehicle speed is reduced, so as to ensure driving safety.
The engine management system 40 is further configured to send a prompt signal to the vehicle's cluster for prompting if the feedback signal is outside the threshold range corresponding to the control signal. For example, the EMS sends an effective signal of an alarm lamp to the combination meter through a CAN bus of the vehicle, and then the combination meter directly lights the fan abnormality identification, so that a driver CAN be reminded that the cooling fan motor is abnormal, measures CAN be taken as soon as possible, and danger is avoided.
Based on the monitoring system of the cooling fan motor of the above aspect embodiment, an embodiment of a further aspect of the present invention further provides a vehicle.
Referring to fig. 5, a block diagram of a vehicle according to an embodiment of the present invention is shown, and as shown in fig. 5, the vehicle 1000 includes the monitoring system 100 for a cooling fan motor according to an embodiment of the above aspect.
According to the vehicle 1000 of the embodiment of the present invention, by using the monitoring system 100 of the embodiment of the above aspect, the operating state of the cooling fan motor can be monitored, a failure is avoided, and the safety is improved.
In the description of the present specification, any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present invention.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (3)
1. A monitoring method of a cooling fan motor of a vehicle including an engine management system, the cooling fan motor of the vehicle including a main fan motor and a sub-fan motor, the monitoring method comprising:
the engine management system sending a control signal to cause the main fan motor and/or the auxiliary fan motor to operate according to the control signal; and
the engine management system receives feedback voltages of the main fan motor and/or the auxiliary fan motor respectively;
the engine management system judges whether the feedback voltage is in a feedback threshold range corresponding to the control signal when the main fan motor and/or the auxiliary fan motor normally operate;
if the feedback voltage is within the feedback threshold range, the engine management system judges that the main fan motor and/or the auxiliary fan motor normally operate; or,
and if the feedback voltage exceeds the range of the feedback threshold value, the engine management system judges that the main fan motor and/or the auxiliary fan motor are abnormal, controls the engine of the vehicle to reduce the speed to a preset rotating speed, and controls a combination meter of the vehicle to prompt the abnormality of the fan motor.
2. A monitoring system of a cooling fan motor of a vehicle, characterized by comprising:
a cooling fan motor including a main fan motor and an auxiliary fan motor;
a first main fan switch, a second main fan switch and an auxiliary fan switch;
an engine management system, which sends a control signal to control the on/off of the first main fan switch, the second main fan switch and the auxiliary fan switch, so that the main fan motor and/or the auxiliary fan motor operate according to the control signal, receives a feedback voltage of the main fan motor and/or the auxiliary fan motor, and determines whether the feedback voltage is within a feedback threshold range corresponding to the control signal when the main fan motor and/or the auxiliary fan motor operate normally, and determines that the main fan motor and/or the auxiliary fan motor operate normally when the feedback voltage is within the feedback threshold range, or determines that the main fan motor and/or the auxiliary fan motor are abnormal when the feedback voltage exceeds the feedback threshold range, and controlling the engine of the vehicle to reduce the speed to a preset rotating speed and controlling a combination meter of the vehicle to prompt that a fan motor is abnormal.
3. A vehicle characterized by comprising the monitoring system of the cooling fan motor according to claim 2.
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| CN201510312865.6A CN104863684B (en) | 2015-06-09 | 2015-06-09 | The monitoring method and monitoring system of vehicle and its cooling fan motor |
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| CN201510312865.6A CN104863684B (en) | 2015-06-09 | 2015-06-09 | The monitoring method and monitoring system of vehicle and its cooling fan motor |
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| CN105719461A (en) * | 2016-03-10 | 2016-06-29 | 优数通（北京）科技有限公司 | Online debugging device and method of vehicle engine cooling fan |
| CN107433881B (en) * | 2016-11-23 | 2020-03-06 | 北京新能源汽车股份有限公司 | Method and device for controlling faults of vehicle motor cooling system |
| CN112431783B (en) * | 2020-11-27 | 2022-06-24 | 江西昌河汽车有限责任公司 | Double-speed fan abnormity diagnosis system and diagnosis method thereof |
| CN114137347B (en) * | 2021-11-26 | 2024-05-07 | 北京经纬恒润科技股份有限公司 | Fault diagnosis method, verification method and device for heat dissipation system |
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| JP4848780B2 (en) * | 2006-01-27 | 2011-12-28 | トヨタ自動車株式会社 | Control device for cooling fan |
| DE102006029688A1 (en) * | 2006-06-28 | 2008-01-03 | Volkswagen Ag | Internal combustion engine cooling system for motor vehicle, has radiator fan electronics measuring electrical system voltage during detected dry running operation and switching off fan during dropping of system voltage below threshold |
| CN201475020U (en) * | 2009-09-04 | 2010-05-19 | 科博达技术有限公司 | Controller of automobile-engine cooling fans |
| JP5201418B2 (en) * | 2009-11-10 | 2013-06-05 | アイシン精機株式会社 | Internal combustion engine cooling system and failure determination method in internal combustion engine cooling system |
| CN103511306A (en) * | 2012-06-18 | 2014-01-15 | 光宝电子(广州)有限公司 | Fan model detection method, fan control method and control circuit and device |
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