CN103074914B - Engineering machinery cooling control system, control method and excavator - Google Patents
Engineering machinery cooling control system, control method and excavator Download PDFInfo
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- CN103074914B CN103074914B CN201310017678.6A CN201310017678A CN103074914B CN 103074914 B CN103074914 B CN 103074914B CN 201310017678 A CN201310017678 A CN 201310017678A CN 103074914 B CN103074914 B CN 103074914B
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- 238000001816 cooling Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 86
- 230000005855 radiation Effects 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 230000001105 regulatory effect Effects 0.000 claims abstract description 8
- 230000017525 heat dissipation Effects 0.000 claims description 74
- 230000001276 controlling effect Effects 0.000 claims description 20
- 238000005728 strengthening Methods 0.000 claims description 2
- 230000003044 adaptive effect Effects 0.000 abstract description 6
- 239000000446 fuel Substances 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 description 10
- 238000011217 control strategy Methods 0.000 description 5
- 230000033228 biological regulation Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005183 dynamical system Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
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Abstract
The invention discloses a kind of engineering machinery cooling control system, a kind of engineering machinery cooling control method and a kind of excavator.Engineering machinery cooling control system comprises: receiver (11), for receiving liquid force feed temperature value T; And controller (12), comprise at least two kinds of radiating control patterns, this controller (12), for determining corresponding radiating control pattern according to hydraulic oil temperature angle value T, regulates the heat radiation power of radiator (13) according to hydraulic oil temperature angle value T under determined radiating control pattern.Engineering machinery cooling control method comprises: receiving liquid force feed temperature value T; And determine corresponding radiating control pattern according to hydraulic oil temperature angle value T, according to hydraulic oil temperature angle value T, the heat radiation power of radiator (13) is regulated under determined radiating control pattern.Engineering machinery cooling control system provided by the invention, control method and excavator make radiator be provided with stronger adaptive ability, ensure that complete machine fuel economy.
Description
Technical field
The present invention relates to radiating control technical field, particularly, relate to a kind of engineering machinery cooling control system, a kind of engineering machinery cooling control method and a kind of excavator.
Background technology
Radiator is the core of hydraulic construction machine (such as hydraulic crawler excavator) cooling system, if radiator cisco unity malfunction, it is many unfavorable to cause dynamical system.Normally, hydraulic construction machine cooling system forms primarily of receiver, controller, proportion magnetic valve, hydraulic pump, hydraulic motor and radiator, as shown in Figure 1, receiver is for receiving the hydraulic oil temperature angle value gathered by temperature pick up, controller, according to the size of current of hydraulic oil temperature angle value control ratio electromagnetic valve, regulates hydraulic pressure pump delivery, and then drives hydraulic motor, controlled the rotating speed of radiator by hydraulic motor, make it meet cooling requirements.
Current engineering mechanical radiating system is when regulating hydraulic fluid temperature, the relation of radiator rotating speed and hydraulic fluid temperature as shown in Figure 2 or Figure 3, in illustrated coordinate system, transverse axis represents that hydraulic fluid temperature T(unit is for degree Celsius (DEG C)), the longitudinal axis represents that radiator rotating speed N(unit is for rev/min (m/min)), when hydraulic fluid temperature T is less than t, radiator runs by minimum speed Nmin, minimally heat radiation power, when hydraulic fluid temperature T be greater than t ' time, radiator is pressed maximum (top) speed Nmax and is run, keep maximum heat radiation power, when hydraulic fluid temperature T is between t and t ', radiator rotating speed N and hydraulic fluid temperature T is linear relationship or monotonous curve relation.Adopt the radiator adaptive ability of this single control program not strong, the control accuracy under different operating mode is not high, and energy-saving effect is also not ideal enough.
Summary of the invention
The object of this invention is to provide and a kind ofly have stronger adaptive ability, control accuracy is high, can ensure the engineering machinery cooling control system of complete machine fuel economy, engineering machinery cooling control method and excavator.
To achieve these goals, the invention provides a kind of engineering machinery cooling control system, this control system comprises: receiver, for receiving liquid force feed temperature value T; And controller, comprise at least two kinds of radiating control patterns, this controller is used for determining corresponding radiating control pattern according to described hydraulic oil temperature angle value T, and regulates the heat radiation power of radiator according to hydraulic oil temperature angle value T under determined radiating control pattern.
Present invention also offers a kind of engineering machinery cooling control method, this control method comprises: receiving liquid force feed temperature value T; And determine to adopt corresponding radiating control pattern according to described hydraulic oil temperature angle value T, and according to hydraulic oil temperature angle value T, the heat radiation power of radiator is regulated under determined radiating control pattern.
Present invention also offers a kind of excavator, this project machinery comprises engineering machinery cooling control system provided by the invention.
Pass through technique scheme, when controlling the rotating speed of radiator, first corresponding radiating control pattern is determined according to the hydraulic oil temperature angle value T collected, regulate the heat radiation power of radiator according to hydraulic oil temperature angle value T under the radiating control pattern determined, because different radiating control patterns can arrange different control strategies, different control strategies can be adopted thus under different operating modes to regulate the heat radiation power of radiator, radiator is made to be provided with stronger adaptive ability, and improve control accuracy, ensure that complete machine fuel economy.
Other features and advantages of the present invention are described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for manual, is used from explanation the present invention, but is not construed as limiting the invention with detailed description of the invention one below.In the accompanying drawings:
Fig. 1 is the structural representation of the engineering mechanical radiating system of prior art;
Fig. 2 and Fig. 3 is the radiator rotating speed of prior art and the curve relation figure of hydraulic fluid temperature;
Fig. 4 is the structural representation of engineering machinery cooling control system of the present invention;
Fig. 5, Fig. 6 and Fig. 7 are the curve relation figures of radiator rotating speed according to the engineering machinery cooling control system of embodiment of the present invention and hydraulic fluid temperature;
Fig. 8 and Fig. 9 is the control flow chart of the engineering machinery cooling control method according to embodiment of the present invention.
Description of reference numerals
11 receiver 12 controllers
13 radiators
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, detailed description of the invention described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
As shown in Figure 4, engineering machinery cooling control system provided by the invention comprises receiver 11, for receiving liquid force feed temperature value T; And controller 12, comprise at least two kinds of radiating control patterns, this controller 12 for determining corresponding radiating control pattern according to described hydraulic oil temperature angle value T, and regulates the heat radiation power of radiator 13 according to hydraulic oil temperature angle value T under determined radiating control pattern.
According to technical scheme of the present invention, described radiator 13 can comprise fan, and described controller 12 can regulate the heat radiation power of radiator 13 by the rotation speed of the fan controlling radiator 13.Can gather hydraulic oil temperature angle value T by temperature pick up, the hydraulic oil temperature angle value T collected is sent to controller 12 by receiver 11, exports corresponding control electric current to proportion magnetic valve, and then regulate the rotation speed of the fan size of radiator 13 by controller 12.Can by arranging the working procedure of controller 12, controller 12 is set up there is different radiating control patterns, wherein different control model is corresponding different rotational speed regulation strategy, described rotational speed regulation strategy can set according to the needs of practical operation, and the present invention does not specifically limit it.Thus, controller 12 can determine corresponding radiating control pattern by the hydraulic oil temperature angle value T collected, and under determined radiating control pattern, adopt corresponding rotational speed regulation strategy to regulate the rotation speed of the fan size of radiator 13, and then regulate the heat radiation power of radiator 13, radiator 13 can be made thus to have good adaptive ability, the heat radiation power of radiator 13 can be regulated by different control strategies under different operating modes, be different from single regulative mode of the prior art, degree of regulation is higher.
Preferably, the controlling curve of described radiating control pattern comprises corresponding closed loop curve interval to a preset temperature.In the coordinate system shown in Fig. 5, transverse axis represents that hydraulic fluid temperature T(unit is for degree Celsius (DEG C)), the longitudinal axis represents that radiator rotating speed N(unit is for rev/min (m/min)).
According to one embodiment of the present invention, described radiating control pattern comprises increasing heat dissipation capacity Mode A, when described controller 12 is operated in described increasing heat dissipation capacity Mode A: if t2≤T < is t3, t2 is the second temperature value, t3 is the 3rd temperature value, and described controller 12 controls the rotation speed of the fan of described radiator 13 and hydraulic oil temperature angle value T is Convex Functions relation; If T>t3, described controller 12 controls described radiator 13 and runs with maximum permissible revolution Nmax.
Described second temperature value t2 can load operation low according to engineering machinery time hydraulic oil operating temperature determine, at this second temperature value t2 or following, radiator 13 with lower rotation speed of the fan work, can meet radiating requirements completely; Described 3rd temperature value t3 can determine according to the operating temperature upper limit of hydraulic oil during engineering machinery high load operation, and at the 3rd more than temperature value t3, radiator 13 needs to run with peak power, and rotation speed of the fan is the highest.
Particularly, as shown in Figure 5, for increasing heat dissipation capacity Mode A, the rotation speed of the fan control strategy of radiator 13 is as follows:
When described controller 12 is operated in increasing heat dissipation capacity Mode A:
If t2≤T < t3, described controller 12 control the rotation speed of the fan of described radiator 13 and hydraulic oil temperature angle value T be Convex Functions relation (namely on curve, the segmental arc of any point-to-point transmission is always positioned at the top of these 2 lines) as shown in Figure 5.
If T>t3, described controller 12 controls described radiator 13 and runs with maximum permissible revolution Nmax, as shown in Figure 5.
Preferably, described radiating control pattern also comprises reduction heat dissipation capacity Mode B, when described controller 12 is operated in described reduction heat dissipation capacity Mode B: if T < is t1, t1 is the first temperature value, and described controller 12 controls described radiator 13 and runs with minimum permission rotating speed Nmin; If t1≤T < is t2, the rotation speed of the fan that described controller 12 controls described radiator 13 increases with described hydraulic oil temperature angle value T's and at the uniform velocity increases; If t2≤T < is t3, described controller 12 controls the rotation speed of the fan of described radiator 13 and hydraulic oil temperature angle value T is underpick mechanism relation.
As shown in Figure 7, when described controller 12 is operated in described reduction heat dissipation capacity Mode B:
If T < is t1, t1 is the first temperature value, described controller 12 controls described radiator 13 and runs with minimum permission rotating speed Nmin, as shown in Figure 7, wherein this first temperature value t1 can determine according to the environment temperature of engineering machinery work, under this first temperature value t1, radiator 13 can run with lowest power.
If t1≤T < is t2, the rotation speed of the fan that described controller 12 controls described radiator 13 increases with described hydraulic oil temperature angle value T's and at the uniform velocity increases.As shown in Figure 7, the rotation speed of the fan of radiator 13 and hydraulic oil temperature angle value T are linear relationship.
If t2≤T < is t3, described controller 12 controls the rotation speed of the fan of described radiator 13 and hydraulic oil temperature angle value T is underpick mechanism relation, as shown in Figure 7, namely the rotation speed of the fan of radiator 13 and hydraulic oil temperature angle value T are underpick mechanism relation (on curve, the segmental arc of any point-to-point transmission is always positioned at the below of these 2 lines).
According to another embodiment of the invention, described radiating control pattern comprises reduction heat dissipation capacity Mode B, when described controller 12 is operated in described reduction heat dissipation capacity Mode B: if T < is t1, t1 is the first temperature value, and described controller 12 controls described radiator 13 and runs with minimum permission rotating speed Nmin; If t1≤T < is t2, t2 is the second temperature value, and the rotation speed of the fan that described controller 12 controls described radiator 13 increases with described hydraulic oil temperature angle value T's and at the uniform velocity increases; If t2≤T < is t3, t3 is the 3rd temperature value, and described controller 12 controls the rotation speed of the fan of described radiator 13 and hydraulic oil temperature angle value T is underpick mechanism relation (as shown in Figure 6).
Preferably, described radiating control pattern also comprises increasing heat dissipation capacity Mode A, when described controller 12 is operated in described increasing heat dissipation capacity Mode A: if t2≤T < is t3, described controller 12 controls the rotation speed of the fan of described radiator 13 and hydraulic oil temperature angle value T is Convex Functions relation; If T>t3, described controller 12 controls described radiator 13 and runs (as shown in Figure 7) with maximum permissible revolution Nmax.
According to technical scheme of the present invention, the initialization of described controller 12 is at reduction heat dissipation capacity Mode B, if now described hydraulic oil temperature angle value T changes between t2≤T < t3, then described controller 12 controls the rotation speed of the fan of described radiator 13 and hydraulic oil temperature angle value T is underpick mechanism relation; When described controller 12 is operated in reduction heat dissipation capacity Mode B and T is raised to more than t3, described controller 12 switches to and strengthens heat dissipation capacity Mode A, if now described hydraulic oil temperature angle value T changes between t2≤T < t3, then described controller 12 controls the rotation speed of the fan of described radiator 13 and hydraulic oil temperature angle value T is Convex Functions relation; When described controller 12 is operated in increasing heat dissipation capacity Mode A and T drops to below t2, described controller 12 again switches back and reduces heat dissipation capacity Mode B.
Present invention also offers a kind of engineering machinery cooling control method, this control method comprises: receiving liquid force feed temperature value T; And determine corresponding radiating control pattern according to described hydraulic oil temperature angle value T, and according to hydraulic oil temperature angle value T, the heat radiation power of radiator 13 is regulated under determined radiating control pattern.Described radiator 13 can comprise fan, can be regulated the heat radiation power of radiator 13 by the rotation speed of the fan controlling radiator 13.
According to technical scheme of the present invention, described radiating control pattern can comprise increasing heat dissipation capacity Mode A and reduce heat dissipation capacity Mode B, in described increasing heat dissipation capacity Mode A, with the interval corresponding controlling curve of described preset temperature be with described hydraulic oil temperature angle value T be transverse axis, the rotation speed of the fan of the described radiator 13 Convex Functions curve that is the longitudinal axis; In described reduction heat dissipation capacity Mode B, with the interval corresponding controlling curve of described preset temperature be with described hydraulic oil temperature angle value T be transverse axis, the rotation speed of the fan of the described radiator 13 underpick mechanism curve that is the longitudinal axis.
According to technical scheme of the present invention, initialization is at reduction heat dissipation capacity Mode B; When being operated in reduction heat dissipation capacity Mode B and described hydraulic oil temperature angle value T rises and exceeds more than described preset temperature interval, switching to and strengthening heat dissipation capacity Mode A; When being operated in increasing heat dissipation capacity Mode A and described hydraulic oil temperature angle value T declines and exceeds below described preset temperature interval, again switching back and reducing heat dissipation capacity Mode B.
Fig. 8 and Fig. 9 is the control flow chart of the engineering machinery cooling control method according to embodiment of the present invention.
According to one embodiment of the present invention, described radiating control pattern comprises increasing heat dissipation capacity Mode A, under described increasing heat dissipation capacity Mode A: if t2≤T < is t3, t2 is the second temperature value, t3 is the 3rd temperature value, and the rotation speed of the fan and the hydraulic oil temperature angle value T that control described radiator 13 are Convex Functions relation; If T>t3, control described radiator 13 and run with maximum permissible revolution Nmax.
Described second temperature value t2 can load operation low according to engineering machinery time hydraulic oil operating temperature determine, at this second temperature value t2 or following, radiator 13 with lower rotation speed of the fan work, can meet radiating requirements completely; Described 3rd temperature value t3 can determine according to the operating temperature upper limit of hydraulic oil during engineering machinery high load operation, and at the 3rd more than temperature value t3, radiator 13 needs to run with peak power, and rotation speed of the fan is the highest.
Particularly, as shown in Figure 8, under increasing heat dissipation capacity Mode A:
If t2≤T < is t3, the rotation speed of the fan and the hydraulic oil temperature angle value T that control described radiator 13 are Convex Functions relation (representing with case4 in figures 7 and 8);
If T>t3, control described radiator 13 and run (representing with case5 in figures 7 and 8) with maximum permissible revolution Nmax.
Preferably, described radiating control pattern also comprises reduction heat dissipation capacity Mode B, under described reduction heat dissipation capacity Mode B: if T < is t1, t1 is the first temperature value, controls described radiator 13 and runs with minimum permission rotating speed Nmin; If t1≤T < is t2, the rotating speed controlling described radiator 13 increases with described hydraulic oil temperature angle value T's and at the uniform velocity increases; If t2≤T < is t3, the rotation speed of the fan and the hydraulic oil temperature angle value T that control described radiator 13 are underpick mechanism relation.
As shown in Figure 8, under reduction heat dissipation capacity Mode B:
If T < is t1, controls described radiator 13 and run (representing with case1 in figures 7 and 8) with minimum permission rotating speed Nmin;
If t1≤T < is t2, the rotating speed controlling described radiator 13 increases with described hydraulic oil temperature angle value T's and at the uniform velocity increases (representing with case2 in figures 7 and 8);
If t2≤T < is t3, the rotation speed of the fan and the hydraulic oil temperature angle value T that control described radiator 13 are underpick mechanism relation (representing with case3 in figures 7 and 8);
According to another embodiment of the invention, described radiating control pattern comprises reduction heat dissipation capacity Mode B, under described reduction heat dissipation capacity Mode B: if T < is t1, t1 is the first temperature value, controls described radiator 13 and runs (representing with case1 in fig. 8) with minimum permission rotating speed Nmin; If t1≤T < is t2, t2 is the second temperature value, and the rotating speed controlling described radiator 13 increases with described hydraulic oil temperature angle value T's and at the uniform velocity increases (representing with case2 in fig. 8); If t2≤T < is t3, t3 is the 3rd temperature value, and the rotation speed of the fan and the hydraulic oil temperature angle value T that control described radiator 13 are underpick mechanism relation (representing with case3 in fig. 8).
Preferably, described radiating control pattern also comprises increasing heat dissipation capacity Mode A, under described increasing heat dissipation capacity Mode A: if t2≤T < is t3, t2 is the second temperature value, t3 is the 3rd temperature value, and the rotation speed of the fan and the hydraulic oil temperature angle value T that control described radiator (13) are Convex Functions relation (representing with case4 in fig. 8); If T>t3, control described radiator 13 and run (representing with case5 in fig. 8) with maximum permissible revolution Nmax.
According to technical scheme of the present invention, initialization is at reduction heat dissipation capacity Mode B, if now described hydraulic oil temperature angle value T changes between t2≤T < t3, then the rotation speed of the fan and the hydraulic oil temperature angle value T that control described radiator 13 are underpick mechanism relation; When being operated in reduction heat dissipation capacity Mode B and T is raised to more than t3, switch to and strengthen heat dissipation capacity Mode A, if now described hydraulic oil temperature angle value T changes between t2≤T < t3, then the rotation speed of the fan and the hydraulic oil temperature angle value T that control described radiator 13 are Convex Functions relation; When being operated in increasing heat dissipation capacity Mode A and T drops to below t2, again switching back and reducing heat dissipation capacity Mode B.
Present invention also offers a kind of excavator (not shown), this excavator comprises engineering machinery cooling control system provided by the invention.
Engineering machinery cooling control system provided by the invention, control method and comprise the excavator of described control system, different control strategies can be adopted under different operating modes to regulate the rotation speed of the fan of radiator, radiator is made to be provided with stronger adaptive ability, and improve control accuracy, ensure that complete machine fuel economy.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible combination.
In addition, also can be combined between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (13)
1. an engineering machinery cooling control system, is characterized in that, this control system comprises:
Receiver (11), for receiving liquid force feed temperature value T; And
Controller (12), comprise at least two kinds of radiating control patterns, this controller (12) for determining corresponding radiating control pattern according to described hydraulic oil temperature angle value T, and regulates the heat radiation power of radiator (13) according to hydraulic oil temperature angle value T under determined radiating control pattern;
Described radiator (13) comprises fan, and described controller (12) regulates the heat radiation power of described radiator (13) by the rotation speed of the fan controlling radiator (13);
The controlling curve of described radiating control pattern comprises corresponding closed loop curve interval to a preset temperature; And
Described radiating control pattern comprises increasing heat dissipation capacity Mode A and reduces heat dissipation capacity Mode B, in described increasing heat dissipation capacity Mode A, with the interval corresponding controlling curve of described preset temperature be with described hydraulic oil temperature angle value T be transverse axis, the rotation speed of the fan of described radiator (13) is the Convex Functions curve of the longitudinal axis; In described reduction heat dissipation capacity Mode B, with the interval corresponding controlling curve of described preset temperature be with described hydraulic oil temperature angle value T be transverse axis, the rotation speed of the fan of described radiator (13) is the underpick mechanism curve of the longitudinal axis.
2. control system according to claim 1, is characterized in that, when described controller (12) is operated in described increasing heat dissipation capacity Mode A:
If t2≤T < is t3, t2 is the second temperature value, and t3 is the 3rd temperature value, and described controller (12) controls the rotation speed of the fan of described radiator (13) and hydraulic oil temperature angle value T is Convex Functions relation;
If T>t3, the rotation speed of the fan that described controller (12) controls described radiator (13) is maximum permissible revolution Nmax.
3. control system according to claim 2, is characterized in that, when described controller (12) is operated in described reduction heat dissipation capacity Mode B:
If T < is t1, t1 is the first temperature value, and the rotation speed of the fan that described controller (12) controls described radiator (13) is minimum permission rotating speed Nmin;
If t1≤T < is t2, the rotation speed of the fan that described controller (12) controls described radiator (13) increases with described hydraulic oil temperature angle value T's and at the uniform velocity increases;
If t2≤T < is t3, described controller (12) controls the rotation speed of the fan of described radiator (13) and hydraulic oil temperature angle value T is underpick mechanism relation.
4. control system according to claim 3, is characterized in that,
Described controller (12) initialization is at reduction heat dissipation capacity Mode B, if now described hydraulic oil temperature angle value T changes between t2≤T < t3, then described controller (12) controls the rotation speed of the fan of described radiator (13) and hydraulic oil temperature angle value T is underpick mechanism relation;
When described controller (12) is operated in reduction heat dissipation capacity Mode B and T is raised to more than t3, described controller (12) switches to and strengthens heat dissipation capacity Mode A, if now described hydraulic oil temperature angle value T changes between t2≤T < t3, then described controller (12) controls the rotation speed of the fan of described radiator (13) and hydraulic oil temperature angle value T is Convex Functions relation;
When described controller (12) is operated in increasing heat dissipation capacity Mode A and T drops to below t2, described controller (12) again switches back and reduces heat dissipation capacity Mode B.
5. control system according to claim 1, is characterized in that, when described controller (12) is operated in described reduction heat dissipation capacity Mode B:
If T < is t1, t1 is the first temperature value, and the rotation speed of the fan that described controller (12) controls described radiator (13) is minimum permission rotating speed Nmin;
If t1≤T < is t2, t2 is the second temperature value, and the rotation speed of the fan that described controller (12) controls described radiator (13) increases with described hydraulic oil temperature angle value T's and at the uniform velocity increases;
If t2≤T < is t3, t3 is the 3rd temperature value, and described controller (12) controls the rotation speed of the fan of described radiator (13) and hydraulic oil temperature angle value T is underpick mechanism relation.
6. control system according to claim 5, is characterized in that, when described controller (12) is operated in described increasing heat dissipation capacity Mode A:
If t2≤T < is t3, described controller (12) controls the rotation speed of the fan of described radiator (13) and hydraulic oil temperature angle value T is Convex Functions relation;
If T>t3, the rotation speed of the fan that described controller (12) controls described radiator (13) is maximum permissible revolution Nmax.
7. control system according to claim 6, is characterized in that,
Described controller (12) initialization is at reduction heat dissipation capacity Mode B, if now described hydraulic oil temperature angle value T changes between t2≤T < t3, then described controller (12) controls the rotation speed of the fan of described radiator (13) and hydraulic oil temperature angle value T is underpick mechanism relation;
When described controller (12) is operated in reduction heat dissipation capacity Mode B and T is raised to more than t3, described controller (12) switches to and strengthens heat dissipation capacity Mode A, if now described hydraulic oil temperature angle value T changes between t2≤T < t3, then described controller (12) controls the rotation speed of the fan of described radiator (13) and hydraulic oil temperature angle value T is Convex Functions relation;
When described controller (12) is operated in increasing heat dissipation capacity Mode A and T drops to below t2, described controller (12) again switches back and reduces heat dissipation capacity Mode B.
8. an engineering machinery cooling control method, is characterized in that, this control method comprises:
Receiving liquid force feed temperature value T; And
Determine corresponding radiating control pattern according to described hydraulic oil temperature angle value T, and according to hydraulic oil temperature angle value T, the heat radiation power of radiator (13) is regulated under determined radiating control pattern;
Described radiator (13) comprises fan, is regulated the heat radiation power of described radiator (13) by the rotation speed of the fan controlling radiator (13);
The controlling curve of described radiating control pattern comprises corresponding closed loop curve interval to a preset temperature; And
Described radiating control pattern comprises increasing heat dissipation capacity Mode A and reduces heat dissipation capacity Mode B, in described increasing heat dissipation capacity Mode A, with the interval corresponding controlling curve of described preset temperature be with described hydraulic oil temperature angle value T be transverse axis, the rotation speed of the fan of described radiator (13) is the Convex Functions curve of the longitudinal axis; In described reduction heat dissipation capacity Mode B, with the interval corresponding controlling curve of described preset temperature be with described hydraulic oil temperature angle value T be transverse axis, the rotation speed of the fan of described radiator (13) is the underpick mechanism curve of the longitudinal axis.
9. control method according to claim 8, is characterized in that, initialization is at reduction heat dissipation capacity Mode B;
When being operated in reduction heat dissipation capacity Mode B and described hydraulic oil temperature angle value T rises and exceeds more than described preset temperature interval, switching to and strengthening heat dissipation capacity Mode A;
When being operated in increasing heat dissipation capacity Mode A and described hydraulic oil temperature angle value T declines and exceeds below described preset temperature interval, again switching back and reducing heat dissipation capacity Mode B.
10. control method according to claim 8, is characterized in that, under described increasing heat dissipation capacity Mode A:
If t2≤T < is t3, t2 is the second temperature value, and t3 is the 3rd temperature value, and the rotation speed of the fan and the hydraulic oil temperature angle value T that control described radiator (13) are Convex Functions relation;
If T>t3, the rotation speed of the fan controlling described radiator (13) is maximum permissible revolution Nmax.
11. control methods according to claim 10, is characterized in that, under described reduction heat dissipation capacity Mode B:
If T < is t1, t1 is the first temperature value, and the rotation speed of the fan controlling described radiator (13) is minimum permission rotating speed Nmin;
If t1≤T < is t2, the rotation speed of the fan controlling described radiator (13) increases with described hydraulic oil temperature angle value T's and at the uniform velocity increases;
If t2≤T < is t3, the rotation speed of the fan and the hydraulic oil temperature angle value T that control described radiator (13) are underpick mechanism relation.
12. control methods according to claim 11, is characterized in that,
Initialization is at reduction heat dissipation capacity Mode B, if now described hydraulic oil temperature angle value T changes between t2≤T < t3, then the rotation speed of the fan and the hydraulic oil temperature angle value T that control described radiator (13) are underpick mechanism relation;
When being operated in reduction heat dissipation capacity Mode B and T is raised to more than t3, switch to and strengthen heat dissipation capacity Mode A, if now described hydraulic oil temperature angle value T changes between t2≤T < t3, then the rotation speed of the fan and the hydraulic oil temperature angle value T that control described radiator (13) are Convex Functions relation;
When being operated in increasing heat dissipation capacity Mode A and T drops to below t2, again switching back and reducing heat dissipation capacity Mode B.
13. 1 kinds of excavators, is characterized in that, this excavator comprises the engineering machinery cooling control system any one of claim 1-7 described in claim.
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| CN201310017678.6A CN103074914B (en) | 2013-01-18 | 2013-01-18 | Engineering machinery cooling control system, control method and excavator |
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| CN103527566B (en) * | 2013-10-16 | 2015-10-28 | 上海中联重科桩工机械有限公司 | A kind of engineering machinery radiating control equipment, system, method and engineering machinery |
| IN2014DN06698A (en) | 2014-05-14 | 2015-05-22 | Komatsu Mfg Co Ltd | |
| JP6538786B2 (en) * | 2017-09-07 | 2019-07-03 | ファナック株式会社 | Temperature estimation apparatus and temperature estimation method |
| CN111536109B (en) * | 2020-04-30 | 2023-04-21 | 三一重机有限公司 | Oil temperature control method and device and engineering machinery |
| CN113775606B (en) * | 2021-08-23 | 2022-08-05 | 中联重科股份有限公司 | Control method and control device for hydraulic oil cooling system and processor |
| CN114837798B (en) * | 2022-04-28 | 2023-10-27 | 山推工程机械股份有限公司 | Engineering machinery heat dissipation management method, device and system |
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| JP3903136B2 (en) * | 2001-11-05 | 2007-04-11 | 株式会社小松製作所 | Construction machine cooling system |
| JP2005307599A (en) * | 2004-04-22 | 2005-11-04 | Hitachi Constr Mach Co Ltd | Cooling device disposition structure of construction machine |
| JP4649354B2 (en) * | 2006-03-20 | 2011-03-09 | キャタピラー エス エー アール エル | Cooling fan control device and work machine cooling fan control device |
| CN102562636B (en) * | 2010-12-16 | 2014-10-15 | 普天信息技术研究院有限公司 | Stepless speed adjusting method and control system for fan speed of wireless base station equipment |
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| CN101005264A (en) * | 2006-01-20 | 2007-07-25 | 技嘉科技股份有限公司 | Intelligent fan rotating speed control method |
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