CN113217449B - Engineering machinery fan system and control method - Google Patents
Engineering machinery fan system and control method Download PDFInfo
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- CN113217449B CN113217449B CN202110631267.0A CN202110631267A CN113217449B CN 113217449 B CN113217449 B CN 113217449B CN 202110631267 A CN202110631267 A CN 202110631267A CN 113217449 B CN113217449 B CN 113217449B
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- fan
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
- F05D2270/303—Temperature
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Component Parts Of Construction Machinery (AREA)
Abstract
The invention relates to the technical field of engineering machinery, in particular to an engineering machinery fan system and a control method, wherein the engineering machinery fan system comprises a signal acquisition module, and the signal acquisition module is used for acquiring a temperature signal and a working condition signal of a whole vehicle; the fan control module is electrically connected with the signal acquisition module; the fan set is electrically connected with the fan control module; the fan control module is configured to: and controlling the fan set according to the temperature signal and the working condition signal. The invention can adjust the rotating speed of the fan set according to different working conditions, thereby ensuring the working efficiency of the whole vehicle.
Description
Technical Field
The invention relates to the technical field of engineering machinery, in particular to an engineering machinery fan system and a control method.
Background
The main method for controlling the common fan of the engineering machinery at present is as follows: the vehicle control unit mainly analyzes data of hydraulic oil temperature, cooling liquid temperature and air inlet temperature, different fans are controlled to rotate at different rotating speeds according to different temperature values, and each group of fans dissipates heat of different objects. The fan group can be combined in different modes for heat dissipation, and the fan terminal receives data signals sent by the vehicle control unit and achieves the function of controlling the rotating speed of the fan according to different signals.
In the traditional engineering machinery, a vehicle controller changes PWM signals of fan sets according to the temperature of hydraulic oil, the temperature of cooling liquid and the temperature of intake air to control the rotating speed of fans. However, the rotation speed of the fan changes along with the change of the temperature, namely, the rotation speed of the fan is correspondingly increased when the temperature reaches a certain value, and certain hysteresis is provided. When the engineering machinery is continuously under the heavy-load working condition, the temperature is possibly continuously increased, and the working efficiency of the whole vehicle is reduced due to overhigh temperature.
Therefore, a fan system and a control method for engineering machinery are needed to solve the above technical problems.
Disclosure of Invention
The invention aims to provide an engineering machinery fan system and a control method, which can adjust the rotating speed of a fan set according to different working conditions, thereby ensuring the working efficiency of a whole vehicle.
In order to achieve the purpose, the invention adopts the following technical scheme:
a work machine fan system, comprising:
the signal acquisition module is used for acquiring a temperature signal and a working condition signal of the whole vehicle;
the fan control module is electrically connected with the signal acquisition module;
the fan set is electrically connected with the fan control module;
the fan control module is configured to: and controlling the fan set according to the temperature signal and the working condition signal.
Further, the automobile air conditioner further comprises a working condition identification module, wherein the working condition identification module is electrically connected with the signal acquisition module and the fan control module, and the working condition identification module can judge the working condition of the whole automobile according to the working condition signal.
Further, the fan set includes:
the first fan set is electrically connected with the fan control module and is used for cooling the cooling liquid and the air inlet pipe;
the second fan set is electrically connected with the fan control module and used for cooling hydraulic oil;
and the third fan set is electrically connected with the fan control module and used for cooling the cooling liquid, the air inlet pipe and the hydraulic oil.
A control method of a fan system of engineering machinery is used for controlling the fan system of the engineering machinery, and comprises the following steps:
s1, a signal acquisition module acquires a temperature signal and a working condition signal of the whole vehicle and transmits the temperature signal and the working condition signal to a fan control module;
s2, the fan control module obtains the rotating speed of the fan set according to the temperature signal; the fan control module obtains the percentage G of the heavy-load working condition within the set time T according to the working condition signal;
and S3, the fan control module adjusts the rotating speed of the fan group according to the percentage G and controls the fan group to rotate at the adjusted rotating speed.
Further, the fan group includes a first fan group, a second fan group, and a third fan group, the fan control module obtains a rotation speed a of the first fan group, a rotation speed B of the second fan group, and a rotation speed C of the third fan group according to the temperature signal, in step S3, the adjusted rotation speed of the first fan group is a + gxa, the rotation speed of the second fan group is B + gxb, and the rotation speed of the third fan group is C + gxc.
Further, the rotation speed A of the first fan group is determined according to the maximum value of the coolant temperature and the air inlet pipe temperature, the rotation speed B of the second fan group is determined according to the hydraulic oil temperature, and the rotation speed C of the third fan group is determined according to the maximum value of the coolant temperature, the air inlet pipe temperature and the hydraulic oil temperature.
Further, the step S3 includes comparing the rotation speed a, the rotation speed B, and the rotation speed C, extracting a maximum rotation speed value, adjusting the maximum rotation speed value in combination with the percentage G, and controlling the first fan group, the second fan group, and the third fan group to operate according to the adjusted maximum rotation speed value.
Further, in step S2, a working condition recognition module is integrated on the fan control module, and the working condition recognition module is configured to process the working condition signal to obtain a percentage G of the heavy-load working condition within a set time period T.
Further, in the step S2, obtaining the percentage G of the heavy load condition in the set time period T includes the following steps:
s21, under the starting state of the whole vehicle, the working condition recognition module judges the working condition of the whole vehicle for multiple times within a set time T according to a set period;
s22, calculating the proportion of the heavy-load working condition to all working conditions within the set time T to obtain the percentage G of the heavy-load working condition.
Further, in step S22, the operating condition identifying module stores the percentage G of the heavy-load operating condition, and updates the percentage G of the heavy-load operating condition within the next set time T.
The invention has the beneficial effects that:
according to the engineering machinery fan system provided by the invention, the signal acquisition module acquires a temperature signal and a working condition signal of a whole vehicle and then transmits the temperature signal and the working condition signal to the fan control module, and the fan control module controls the fan set according to the temperature signal and the working condition signal. Therefore, the rotating speed of the fan set is adjusted according to different working conditions of the whole vehicle, the fan set is guaranteed to be effectively cooled, the whole vehicle is guaranteed to work at a proper temperature, and the working efficiency of the whole vehicle is guaranteed.
The control method of the engineering mechanical fan system is used for controlling the engineering mechanical fan system, and can adjust the rotating speed of the fan set according to different working conditions, so that the working efficiency of the whole vehicle is ensured.
Drawings
Fig. 1 is a schematic diagram of a fan system of a construction machine according to the present invention.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings and the embodiment. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation that the first and second features are not in direct contact, but are in contact via another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The rotating speed of the fan set is adjusted according to different working conditions, and therefore the working efficiency of the engineering vehicle is guaranteed. As shown in fig. 1, the present invention provides a fan system for construction machinery. This engineering machine tool fan system includes: the fan set comprises a first fan set, a second fan set and a third fan set.
The signal acquisition module is used for acquiring temperature signals and working condition signals of the whole vehicle, wherein the temperature signals include but are not limited to hydraulic oil temperature, air inlet pipe temperature and coolant temperature; operating condition signals include, but are not limited to, gear, engine speed, and main pump pressure; the fan control module is electrically connected with the signal acquisition module; the first fan group is electrically connected with the fan control module and used for cooling the cooling liquid and the air inlet pipe; the second fan set is electrically connected with the fan control module and used for cooling the hydraulic oil; the third fan set is electrically connected with the fan control module and used for cooling the cooling liquid, the air inlet pipe and the hydraulic oil; the fan control module is configured to: and respectively controlling the first fan group, the second fan group and the third fan group according to the temperature signal and the working condition signal.
The rotating speed of the fan set is adjusted according to different working conditions of the whole vehicle, and the first fan set, the second fan set and the third fan set are guaranteed to be capable of effectively cooling liquid, an air inlet pipe and hydraulic oil, so that the whole vehicle is guaranteed to work at a proper temperature, and the working efficiency of the whole vehicle is guaranteed.
Furthermore, the engineering machinery fan system further comprises a working condition identification module, the working condition identification module is electrically connected with the signal acquisition module and the fan control module, and the working condition of the whole vehicle can be judged according to working condition signals. The handling capacity of the fan control module data can be reduced by arranging the working condition identification module, so that the fan control module is guaranteed to directly obtain the whole vehicle working condition through the working condition identification module, the first fan set, the second fan set and the third fan set are controlled in time, and the adjustment hysteresis is eliminated.
Furthermore, the engineering machinery fan system further comprises an air conditioning module, the air conditioning module is electrically connected with the fan control module, and when the air conditioning module is started, the fan control module can control the first fan set, the second fan set and the third fan set to rotate at the maximum speed. When the air conditioning module is started, the temperature of the whole vehicle is very high, the first fan set, the second fan set and the third fan set directly enter the maximum speed to rotate, and the cooling liquid, the air inlet pipe and the hydraulic oil of the whole vehicle are rapidly cooled.
The embodiment also provides a control method of the engineering mechanical fan system, which is used for controlling the engineering mechanical fan system and comprises the following steps:
s1, a signal acquisition module acquires a temperature signal and a working condition signal of a whole vehicle and transmits the temperature signal and the working condition signal to a fan control module;
s2, the fan control module obtains the rotating speed of the fan set according to the temperature signal; the fan control module obtains the percentage G of the heavy-load working condition within the set time T according to the working condition signal;
and S3, the fan control module adjusts the rotating speed of the fan group according to the percentage G and controls the fan group to rotate at the adjusted rotating speed.
The rotating speed of the fan set is adjusted according to the working condition of the whole vehicle, and the fan set is guaranteed to be effectively cooled, so that the whole vehicle is guaranteed to work at a proper temperature, and the working efficiency of the whole vehicle is guaranteed.
Specifically, the fan group includes a first fan group, a second fan group and a third fan group, the fan control module obtains a rotation speed a of the first fan group, a rotation speed B of the second fan group and a rotation speed C of the third fan group according to the temperature signal, in step S3, the adjusted rotation speed of the first fan group is a + gxa, the rotation speed of the second fan group is B + gxb, and the rotation speed of the third fan group is C + gxc. The first fan group, the second fan group and the third fan group are adjusted according to the percentage G occupied by the heavy-load working condition, so that the rotating speeds of the first fan group, the second fan group and the third fan group are all increased, and the temperature of the whole vehicle can meet the requirement. It is noted that this approach is applicable to electronic fans.
In other embodiments, for the non-electronic fan, step S3 further includes comparing the rotation speed a, the rotation speed B, and the rotation speed C, extracting a maximum rotation speed value thereof, adjusting the maximum rotation speed value in combination with the percentage G, and controlling the first fan group, the second fan group, and the third fan group to operate at the adjusted maximum rotation speed value. Specifically, for example, the maximum rotation speed a is obtained by comparing the rotation speed a, the rotation speed B, and the rotation speed C, then the rotation speed a is taken as the maximum rotation speed value, and the percentage G of the heavy-duty working condition is combined to obtain the adjusted maximum rotation speed value, that is, a + G × a, and then the first fan group, the second fan group, and the third fan group are controlled to rotate at the rotation speed of a + G × a.
Further, the rotating speed A of the first fan set is determined according to the maximum value of the temperature of the cooling liquid and the temperature of the air inlet pipe, the rotating speed B of the second fan set is determined according to the temperature of the hydraulic oil, and the rotating speed C of the third fan set is determined according to the maximum value of the temperature of the cooling liquid, the temperature of the air inlet pipe and the temperature of the hydraulic oil. Through the mode, the first fan set, the second fan set and the third fan set can be guaranteed to be capable of meeting the requirement of cooling corresponding cooling liquid, air of the air inlet pipe and hydraulic oil.
Further, in the step S2, a working condition recognition module is integrated on the fan control module, and the working condition recognition module is used for processing the gear, the engine speed and the main pump pressure to obtain the percentage G of the heavy-load working condition in the set time period T. The handling capacity of the fan control module data can be reduced by arranging the working condition identification module, so that the fan control module is guaranteed to directly obtain the whole vehicle working condition through the working condition identification module, the first fan set, the second fan set and the third fan set are controlled in time, and the adjustment hysteresis is eliminated.
Further, in step S2, obtaining the percentage G of the heavy load condition within the set time period T includes the following steps:
s21, under the starting state of the whole vehicle, judging the working condition of the whole vehicle for multiple times according to a working condition recognition module of a set period within set time T;
s22, calculating the proportion of the heavy-load working condition to all working conditions within the set time T to obtain the percentage G of the heavy-load working condition. Specifically, in step S22, the operating condition identification module stores the percentage G of the heavy-duty operating condition, and updates the percentage G of the heavy-duty operating condition within the next set time T. Through when the whole vehicle works, the percentage G occupied by the heavy-load working condition is updated at each set time T, so that the rotating speeds of the first fan group, the second fan group and the third fan group are adjusted in real time, a good heat dissipation effect is achieved, and the working efficiency of the whole vehicle is improved.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (8)
1. A control method of a fan system of engineering machinery is characterized by being used for controlling the fan system of the engineering machinery, and the fan system of the engineering machinery comprises the following steps:
the signal acquisition module is used for acquiring a temperature signal and a working condition signal of the whole vehicle;
the fan control module is electrically connected with the signal acquisition module;
the fan set is electrically connected with the fan control module;
the fan control module is configured to: controlling the fan set according to the temperature signal and the working condition signal;
the control method of the engineering machinery fan system comprises the following steps:
s1, a signal acquisition module acquires a temperature signal and a working condition signal of the whole vehicle and transmits the temperature signal and the working condition signal to a fan control module;
s2, the fan control module obtains the rotating speed of the fan set according to the temperature signal; the fan control module obtains the percentage G of the heavy-load working condition within the set time T according to the working condition signal;
s3, the fan control module adjusts the rotating speed of the fan group according to the percentage G and controls the fan group to operate at the adjusted rotating speed;
the fan group comprises a first fan group, a second fan group and a third fan group, the fan control module obtains the rotating speed A of the first fan group, the rotating speed B of the second fan group and the rotating speed C of the third fan group according to the temperature signal, in the step S3, the rotating speed of the first fan group after adjustment is A + G × A, the rotating speed of the second fan group is B + G × B, and the rotating speed of the third fan group is C + G × C.
2. The method as claimed in claim 1, wherein the rotation speed A of the first fan set is determined according to a maximum value of a coolant temperature and an intake pipe temperature, the rotation speed B of the second fan set is determined according to a hydraulic oil temperature, and the rotation speed C of the third fan set is determined according to a maximum value of the coolant temperature, the intake pipe temperature and the hydraulic oil temperature.
3. The method as claimed in claim 1, wherein the step S3 includes comparing the rotation speed a, the rotation speed B and the rotation speed C, extracting a maximum rotation speed value, adjusting the maximum rotation speed value in combination with the percentage G, and controlling the first fan group, the second fan group and the third fan group to operate according to the adjusted maximum rotation speed value.
4. The method as claimed in claim 1, wherein in step S2, the fan control module is integrated with a working condition recognition module, and the working condition recognition module is configured to process the working condition signal to obtain a percentage G of a heavy-load working condition in a set time period T.
5. The method for controlling the fan system of the engineering machinery according to claim 4, wherein the step S2 of obtaining the percentage G of the heavy-duty working condition in the set time period T comprises the following steps:
s21, under the starting state of the whole vehicle, the working condition recognition module judges the working condition of the whole vehicle for multiple times within a set time T according to a set period;
s22, calculating the proportion of the heavy-load working condition to all working conditions within the set time T to obtain the percentage G of the heavy-load working condition.
6. The method as claimed in claim 5, wherein in step S22, the operating condition recognition module stores the percentage G of the heavy-duty operating condition and updates the percentage G of the heavy-duty operating condition within a next set time T.
7. The control method of the fan system of the engineering machinery according to claim 1, further comprising a working condition identification module, wherein the working condition identification module is electrically connected with the signal acquisition module and the fan control module, and the working condition identification module can judge the working condition of the whole vehicle according to the working condition signal.
8. The method as claimed in claim 1, wherein the fan set comprises:
the first fan set is electrically connected with the fan control module and used for cooling the cooling liquid and the air inlet pipe;
the second fan set is electrically connected with the fan control module and used for cooling hydraulic oil;
and the third fan set is electrically connected with the fan control module and used for cooling the cooling liquid, the air inlet pipe and the hydraulic oil.
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| CN202110631267.0A CN113217449B (en) | 2021-06-07 | 2021-06-07 | Engineering machinery fan system and control method |
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| CN202110631267.0A CN113217449B (en) | 2021-06-07 | 2021-06-07 | Engineering machinery fan system and control method |
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| CN113217449B true CN113217449B (en) | 2023-03-17 |
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| US6328000B1 (en) * | 2000-07-07 | 2001-12-11 | Detroit Diesel Corporation | Closed loop fan control using fan speed feedback |
| US7182048B2 (en) * | 2002-10-02 | 2007-02-27 | Denso Corporation | Internal combustion engine cooling system |
| CN106870099B (en) * | 2017-03-09 | 2019-02-01 | 山东大学 | A kind of control method of the hybrid vehicle heat management system based on fixed road spectrum |
| CN108790786B (en) * | 2018-05-29 | 2022-03-15 | 南京汽车集团有限公司 | Distributed off-road vehicle power assembly heat exchange system and control method thereof |
| CN111959253A (en) * | 2020-07-15 | 2020-11-20 | 北汽福田汽车股份有限公司 | Cooling control method and system and electric automobile |
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