CN117738777A - Control system of hydraulic independent cooling fan of engineering machinery - Google Patents
Control system of hydraulic independent cooling fan of engineering machinery Download PDFInfo
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- CN117738777A CN117738777A CN202410058817.8A CN202410058817A CN117738777A CN 117738777 A CN117738777 A CN 117738777A CN 202410058817 A CN202410058817 A CN 202410058817A CN 117738777 A CN117738777 A CN 117738777A
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- 238000001816 cooling Methods 0.000 title claims description 61
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 claims description 10
- 230000033228 biological regulation Effects 0.000 claims description 7
- 238000010276 construction Methods 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 27
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
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Abstract
The invention relates to the technical field of loader heat dissipation, in particular to a control system of an engineering machinery hydraulic independent heat dissipation fan. The control method comprises the following steps of: s1, continuously collecting and analyzing an air temperature signal, a water temperature signal and an oil temperature signal by an ECU; s2, executing S3 if the air temperature is greater than T, otherwise executing S6; s3, if the OIL temperature is smaller than OIL-T1 and the WATER temperature is smaller than WATER-T1, the fan rotates at a speed V1, otherwise, S4 is executed; s4, if the OIL temperature is greater than OIL-T2 or the WATER temperature is greater than WATER-T2, the fan rotating speed V2 is achieved, otherwise S5 is executed; s5, the rotation speed of the fan rises along with the rise of the oil temperature or the water temperature; s6, if the OIL temperature is smaller than OIL-T3 and the WATER temperature is smaller than WATER-T3, the fan rotates at a speed V3, otherwise S7 is executed; s7, if the OIL temperature is greater than OIL-T4 or the WATER temperature is greater than WATER-T4, the fan rotating speed V4 is achieved, otherwise S8 is executed; s8, the rotation speed of the fan rises along with the rise of the oil temperature or the water temperature. The rotating speed of the fan is controlled according to the temperature, so that the stability of the whole vehicle operation is improved.
Description
Technical Field
The invention relates to the technical field of loader heat dissipation, in particular to a control system of an independent hydraulic cooling fan of engineering machinery.
Background
The engineering machinery generally controls the rotation speed of the independent cooling fan through the water temperature of the engine and the oil temperature of the gearbox, so as to maintain the heat balance of the whole vehicle. However, in the prior art, the control method of the rotation speed of the cooling fan is the same regardless of the temperature. When the air temperature is low, the oil temperature and the water temperature rise slowly, if the same control mode as the air temperature is high, the oil temperature and the water temperature rise slowly can be caused, and the performance of the whole vehicle is affected; when the air temperature is high, the oil temperature and the water temperature rise quickly, and if the same control mode as the air temperature is low is adopted, the oil temperature and the water temperature rise quickly, and the heat balance of the whole vehicle is affected. In addition, when the whole vehicle is in an idle state, the cooling fan still runs at a high speed, and at the moment, fuel oil is wasted due to higher oil temperature and water temperature.
Disclosure of Invention
The invention aims to provide a control system of a hydraulic independent cooling fan of a construction machine, which can control the rotation speed of the cooling fan according to the temperature.
In order to achieve the purpose, the invention discloses a control system of an engineering machinery hydraulic independent cooling fan, which comprises a complete machine ECU, an engine, a gearbox, an air temperature sensor and a cooling fan, wherein the air temperature sensor is connected with the ECU. The control method of the control system comprises the following steps of:
s1, continuously collecting and analyzing an air temperature signal, an engine water temperature signal and a gearbox oil temperature signal by an ECU;
s2, executing S3 if the air temperature is greater than T, otherwise executing S6;
s3, if the OIL temperature is smaller than OIL-T1 and the WATER temperature is smaller than WATER-T1, the cooling fan runs at a rotating speed V1, otherwise S4 is executed;
s4, if the OIL temperature is greater than OIL-T2 or the WATER temperature is greater than WATER-T2, the cooling fan runs at a rotating speed V2, otherwise S5 is executed; wherein OIL-T1< OIL-T2, WATER-T1< WATER-T2, and V1< V2;
s5, the rotation speed of the cooling fan gradually rises along with the rise of the oil temperature or the water temperature, and the lowest rotation speed of the cooling fan is V1, and the highest rotation speed of the cooling fan is V2;
s6, if the OIL temperature is smaller than OIL-T3 and the WATER temperature is smaller than WATER-T3, the cooling fan runs at a rotating speed V3, otherwise S7 is executed;
s7, if the OIL temperature is greater than OIL-T4 or the WATER temperature is greater than WATER-T4, the cooling fan runs at a rotating speed V4, otherwise S8 is executed; wherein OIL-T3< OIL-T4, WATER-T3< WATER-T4, and V3< V4;
s8, the rotation speed of the cooling fan gradually rises along with the rise of the oil temperature or the water temperature, and the lowest rotation speed of the cooling fan is V3, and the highest rotation speed of the cooling fan is V4.
Preferably, in step 5, the rotation speed of the heat dissipation fan is taken from the first set value and the second set value, and the rotation speed with the higher value is taken as the rotation speed at the current moment;
setting value I: the rotation speed setting value of the cooling fan I is in direct proportion linear change with the change value of the OIL temperature from OIL-T1 to OIL-T2 from V1 to V2;
setting value II: the rotation speed setting value II of the cooling fan is in direct proportion linear change with the change value of the WATER temperature from WATER-temperature-T1 to WATER-temperature-T2.
Preferably, in step 8, the rotation speed of the heat dissipation fan is taken from the set value three and the set value four, and the value higher is taken as the current rotation speed;
setting value III: the rotation speed setting value III of the cooling fan is in direct proportion linear change with the change value of the OIL temperature from the OIL-T3 to the OIL-T4 from V3 to V4;
setting value IV: the rotation speed setting value IV of the cooling fan is in direct proportion linear change with the change value of the WATER temperature from WATER-temperature-T3 to WATER-temperature-T4.
Preferably, V3< V1< V4< V2.
Preferably, OIL-T1< OIL-T3< OIL-T2< OIL-T4, WATER-T1< WATER-T3< WATER-T2< WATER-T4.
Preferably, the control method further includes an idle speed detection step located before the fan regulation step: if the ECU detects that the engine is in an idle state, the cooling fan runs at a rotating speed V3, otherwise, the fan regulating step is carried out.
Preferably, when the ECU detects that the engine speed is greater than 600r/min, the control system enters an idle speed detection step or a fan regulation step, otherwise, the ECU continues to detect the engine speed.
In summary, the beneficial effects of the invention are as follows: the system can control the rotation speed of the fan according to the temperature, so that the whole vehicle can achieve heat balance, simultaneously reduce oil consumption and improve the stability of the operation of the whole vehicle.
Drawings
FIG. 1 is a control flow chart of a control system of a hydraulic independent cooling fan of an engineering machine;
FIG. 2 is a graph showing the rotational speed of the radiator fan as a function of the temperature of the oil or water when the temperature is greater than T;
fig. 3 is a graph showing the rotation speed of the radiator fan according to the oil temperature or the water temperature when the air temperature is less than T.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
The following is a description of a preferred embodiment of the invention, taken in conjunction with the accompanying drawings.
The invention discloses a control system of an engineering machinery hydraulic independent cooling fan, which comprises a complete machine ECU, an engine, a gearbox, an air temperature sensor and a cooling fan, wherein the air temperature sensor is connected with the ECU.
The control method of the control system comprises a fan regulation step, an idle speed detection step and an engine speed detection step, wherein the idle speed detection step and the engine speed detection step are arranged before the fan regulation step, when the ECU detects that the engine speed is greater than 600r/min, the control system enters the idle speed detection step or the fan regulation step, and otherwise, the ECU continues to detect the engine speed.
As shown in fig. 1, the fan control steps are as follows:
s1, continuously collecting and analyzing an air temperature signal, an engine water temperature signal and a gearbox oil temperature signal by an ECU;
s2, if the air temperature is greater than T (the specific value of T is set based on actual operation and is not specifically limited herein), executing S3, otherwise executing S6;
s3, if the OIL temperature is smaller than OIL-T1 and the WATER temperature is smaller than WATER-T1, the cooling fan runs at a rotating speed V1, otherwise S4 is executed;
s4, if the OIL temperature is greater than OIL-T2 or the WATER temperature is greater than WATER-T2, the cooling fan runs at a rotating speed V2, otherwise S5 is executed; wherein OIL-T1< OIL-T2, WATER-T1< WATER-T2, and V1< V2;
s5, the rotation speed of the cooling fan gradually rises along with the rise of the oil temperature or the water temperature, and the lowest rotation speed of the cooling fan is V1, and the highest rotation speed of the cooling fan is V2;
s6, if the OIL temperature is smaller than OIL-T3 and the WATER temperature is smaller than WATER-T3, the cooling fan runs at a rotating speed V3, otherwise S7 is executed;
s7, if the OIL temperature is greater than OIL-T4 or the WATER temperature is greater than WATER-T4, the cooling fan runs at a rotating speed V4, otherwise S8 is executed; wherein OIL-T3< OIL-T4, WATER-T3< WATER-T4, and V3< V4;
s8, the rotation speed of the cooling fan gradually rises along with the rise of the oil temperature or the water temperature, and the lowest rotation speed of the cooling fan is V3, and the highest rotation speed of the cooling fan is V4.
Wherein V3< V1< V4< V2, OIL-T1< OIL-T3< OIL-T2< OIL-T4, WATER-T1< WATER-T3< WATER-T2< WATER-T4.
As shown in fig. 2, in step 5, the rotation speed of the heat radiation fan is taken from the first set value and the second set value, and the rotation speed with the higher value is taken as the rotation speed at the current time.
Setting value I: the rotation speed setting value of the cooling fan is linearly changed from V1 to V2 in proportion to the change value of the OIL temperature from OIL-T1 to OIL-T2.
Setting value II: the rotation speed setting value II of the cooling fan is in direct proportion linear change with the change value of the WATER temperature from WATER-temperature-T1 to WATER-temperature-T2.
As shown in fig. 3, in step 8, the rotation speed of the heat radiation fan is taken from the set value three and the set value four, and the one with the higher value is taken as the rotation speed at the present time.
Setting value III: the rotation speed setting value III of the cooling fan is in direct proportion linear change with the change value of the OIL temperature from the OIL-T3 to the OIL-T4.
Setting value IV: the rotation speed setting value IV of the cooling fan is in direct proportion linear change with the change value of the WATER temperature from WATER-temperature-T3 to WATER-temperature-T4.
As shown in fig. 1, the idle speed detection steps are as follows:
if the ECU detects that the engine is in an idle state, the cooling fan runs at a rotating speed V3, otherwise, the fan regulating step is carried out.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.
Claims (7)
1. The control system of the hydraulic independent cooling fan of the engineering machinery is characterized by comprising an ECU (electronic control unit), an engine, a gearbox, an air temperature sensor and a cooling fan, wherein the air temperature sensor is connected with the ECU, and the control method of the control system comprises the following fan regulation and control steps:
s1, continuously collecting and analyzing an air temperature signal, an engine water temperature signal and a gearbox oil temperature signal by an ECU;
s2, executing S3 if the air temperature is greater than T, otherwise executing S6;
s3, if the OIL temperature is smaller than OIL-T1 and the WATER temperature is smaller than WATER-T1, the cooling fan runs at a rotating speed V1, otherwise S4 is executed;
s4, if the OIL temperature is greater than OIL-T2 or the WATER temperature is greater than WATER-T2, the cooling fan runs at a rotating speed V2, otherwise S5 is executed; wherein OIL-T1< OIL-T2, WATER-T1< WATER-T2, and V1< V2;
s5, the rotation speed of the cooling fan gradually rises along with the rise of the oil temperature or the water temperature, and the lowest rotation speed of the cooling fan is V1, and the highest rotation speed of the cooling fan is V2;
s6, if the OIL temperature is smaller than OIL-T3 and the WATER temperature is smaller than WATER-T3, the cooling fan runs at a rotating speed V3, otherwise S7 is executed;
s7, if the OIL temperature is greater than OIL-T4 or the WATER temperature is greater than WATER-T4, the cooling fan runs at a rotating speed V4, otherwise S8 is executed; wherein OIL-T3< OIL-T4, WATER-T3< WATER-T4, and V3< V4;
s8, the rotation speed of the cooling fan gradually rises along with the rise of the oil temperature or the water temperature, and the lowest rotation speed of the cooling fan is V3, and the highest rotation speed of the cooling fan is V4.
2. The control system of hydraulic independent radiator fan for construction machinery according to claim 1, wherein in step 5, the rotation speed of the radiator fan is taken from a set value one and a set value two, and the rotation speed at the present moment is taken as the rotation speed at the present moment;
setting value I: the rotation speed setting value of the cooling fan I is in direct proportion linear change with the change value of the OIL temperature from OIL-T1 to OIL-T2 from V1 to V2;
setting value II: the rotation speed setting value II of the cooling fan is in direct proportion linear change with the change value of the WATER temperature from WATER-temperature-T1 to WATER-temperature-T2.
3. The control system of hydraulic independent radiator fan for construction machinery according to claim 1, wherein in step 8, the rotation speed of the radiator fan is taken from the set value three and the set value four, and the value higher is taken as the rotation speed at the present moment;
setting value III: the rotation speed setting value III of the cooling fan is in direct proportion linear change with the change value of the OIL temperature from the OIL-T3 to the OIL-T4 from V3 to V4;
setting value IV: the rotation speed setting value IV of the cooling fan is in direct proportion linear change with the change value of the WATER temperature from WATER-temperature-T3 to WATER-temperature-T4.
4. The control system of a hydraulic independent cooling fan for a construction machine according to claim 1, wherein V3< V1< V4< V2.
5. The control system of a hydraulic independent radiator fan of a construction machine according to claim 1, wherein OIL-T1< OIL-T3< OIL-T2< OIL-T4, WATER-T1< WATER-T3< WATER-T2< WATER-T4.
6. The control system of a hydraulic independent radiator fan for a construction machine according to claim 1, wherein the control method further includes an idle speed detection step before the fan control step: if the ECU detects that the engine is in an idle state, the cooling fan runs at a rotating speed V3, otherwise, the fan regulating step is carried out.
7. The control system of hydraulic independent radiator fan for construction machinery according to claim 6, wherein when the ECU detects that the engine speed is greater than 600r/min, the control system goes to an idle speed detection step or a fan regulation step, otherwise the ECU continues to detect the engine speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410058817.8A CN117738777A (en) | 2024-01-16 | 2024-01-16 | Control system of hydraulic independent cooling fan of engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410058817.8A CN117738777A (en) | 2024-01-16 | 2024-01-16 | Control system of hydraulic independent cooling fan of engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117738777A true CN117738777A (en) | 2024-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410058817.8A Pending CN117738777A (en) | 2024-01-16 | 2024-01-16 | Control system of hydraulic independent cooling fan of engineering machinery |
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| Country | Link |
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| CN (1) | CN117738777A (en) |
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- 2024-01-16 CN CN202410058817.8A patent/CN117738777A/en active Pending
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