CN103074914A - Engineering machine heat dissipation control system, control method and excavator - Google Patents
Engineering machine heat dissipation control system, control method and excavator Download PDFInfo
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- CN103074914A CN103074914A CN2013100176786A CN201310017678A CN103074914A CN 103074914 A CN103074914 A CN 103074914A CN 2013100176786 A CN2013100176786 A CN 2013100176786A CN 201310017678 A CN201310017678 A CN 201310017678A CN 103074914 A CN103074914 A CN 103074914A
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Abstract
The invention discloses an engineering machine heat dissipation control system, an engineering machine heat dissipation control method and an excavator. The engineering machine heat dissipation control system comprises a receiver (11) and a controller (12); the receiver is used for receiving the temperature value T of hydraulic oil; the controller comprises at least two heat dissipation control modes, and is used for determining a corresponding heat dissipation control mode according to the temperature value T of the hydraulic oil and adjusting the heat dissipation power of a radiator (13) according to the temperature value T of the hydraulic oil under the determined heat dissipation control mode. The engineering machine heat dissipation control method comprises the following steps that the temperature value T of the hydraulic oil is received; and the heat dissipation power of the radiator (13) is adjusted according to the temperature value T of the hydraulic oil under the determined heat dissipation control mode. According to the engineering machine heat dissipation control system, the engineering machine heat dissipation control method and the excavator, the radiator has higher self-adapting capability, and the economy of fuel of a whole machine is ensured.
Description
Technical field
The present invention relates to the 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 (for example hydraulic crawler excavator) cooling system, if the radiator cisco unity malfunction, it is many unfavorable to cause dynamical system.Normally, the hydraulic construction machine cooling system mainly is comprised of receiver, controller, proportion magnetic valve, hydraulic pump, hydraulic motor and radiator, as shown in Figure 1, receiver is used for receiving the hydraulic fluid temperature value that gathers by temperature pick up, controller is regulated the hydraulic pressure pump delivery according to the size of current of hydraulic fluid temperature value control ratio electromagnetic valve, and then drives hydraulic motor, by the rotating speed of hydraulic motor control radiator, make it satisfy the heat radiation requirement.
Present engineering mechanical radiating system is when regulating hydraulic fluid temperature, the relation of radiator rotating speed and hydraulic fluid temperature such as Fig. 2 or shown in Figure 3, in illustrated coordinate system, transverse axis represents that hydraulic fluid temperature T(unit is degree centigrade (℃)), the longitudinal axis represents radiator rotational speed N (unit is rev/min (m/min)), as hydraulic fluid temperature T during less than t, radiator is by minimum speed Nmin operation, keep minimum heat power, when hydraulic fluid temperature T greater than t ' time, radiator is pressed maximum (top) speed Nmax operation, keep maximum heat radiation power, when hydraulic fluid temperature T was between t and t ', radiator rotational speed N and hydraulic fluid temperature T were linear relationship or monotonous curve relation.Adopt the radiator adaptive ability of this single control program not strong, the control accuracy under different operating modes is not high, and energy-saving effect is also not ideal enough.
Summary of the invention
The purpose of this invention is to provide a kind of stronger adaptive ability that has, control accuracy is high, can guarantee engineering machinery cooling control system, engineering machinery cooling control method and the excavator of complete machine fuel economy.
To achieve these goals, the invention provides a kind of engineering machinery cooling control system, this control system comprises: receiver is used 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 fluid temperature value T, and according to hydraulic fluid temperature value T the heat radiation power of radiator is regulated under determined radiating control pattern.
The present invention also provides a kind of engineering machinery cooling control method, and this control method comprises: receiving liquid force feed temperature value T; And the radiating control pattern of determining to adopt correspondence according to described hydraulic fluid temperature value T, and under determined radiating control pattern, according to hydraulic fluid temperature value T the heat radiation power of radiator is regulated.
The present invention also provides a kind of excavator, and this project machinery comprises engineering machinery cooling control system provided by the invention.
Pass through technique scheme, when the rotating speed of control radiator, at first determine corresponding radiating control pattern according to the hydraulic fluid temperature value T that collects, under the radiating control pattern of determining, regulate the heat radiation power of radiator according to hydraulic fluid temperature value T, because different radiating control patterns can arrange different control strategies, can under different operating modes, adopt different control strategies to regulate the heat radiation power of radiator thus, so that radiator has had stronger adaptive ability, and improved control accuracy, guaranteed the complete machine fuel economy.
Other features and advantages of the present invention will partly be described in detail in the specific embodiment subsequently.
Description of drawings
Accompanying drawing is to be used to provide a further understanding of the present invention, and consists of the part of manual, is used from explanation the present invention with the following specific embodiment one, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the structural representation of the engineering mechanical radiating system of prior art;
Fig. 2 and Fig. 3 are 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 according to the radiator rotating speed of the engineering machinery cooling control system of embodiment of the present invention and the curve relation figure of hydraulic fluid temperature;
Fig. 8 and Fig. 9 are the control flow charts according to the engineering machinery cooling control method of embodiment of the present invention.
Description of reference numerals
11 receivers, 12 controllers
13 radiators
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is elaborated.Should be understood that, the specific embodiment described herein only is used for description and interpretation 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, is used for receiving liquid force feed temperature value T; And controller 12, comprise at least two kinds of radiating control patterns, this controller 12 is used for determining corresponding radiating control pattern according to described hydraulic fluid temperature value T, and according to hydraulic fluid temperature value T the heat radiation power of radiator 13 is regulated under determined radiating control pattern.
According to technical scheme of the present invention, described radiator 13 can comprise fan, and described controller 12 can be regulated by the rotation speed of the fan of control radiator 13 heat radiation power of radiator 13.Can gather hydraulic fluid temperature value T by temperature pick up, receiver 11 sends to controller 12 with the hydraulic fluid temperature value T that collects, and exports corresponding control electric current to proportion magnetic valve by controller 12, and then regulates the rotation speed of the fan size of radiator 13.Can arrange by the working procedure to controller 12, so that being set up, controller 12 has different radiating control patterns, wherein different control model correspondences different rotational speed regulation strategies, described rotational speed regulation strategy can be set according to the needs of practical operation, and the present invention does not specifically limit it.Thus, controller 12 can be determined corresponding radiating control pattern by the hydraulic fluid temperature value T that collects, 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 the heat radiation power of adjusting radiator 13, thus can be so that radiator 13 has preferably adaptive ability, can under different operating modes, regulate the heat radiation power of radiator 13 by different control strategies, be different from single regulative mode of the prior art, degree of regulation is higher.
Preferably, the control curve of described radiating control pattern comprises and the interval corresponding closed loop curve of a preset temperature.In coordinate system shown in Figure 5, transverse axis represents that hydraulic fluid temperature T(unit is degree centigrade (℃)), and the longitudinal axis represents radiator rotational speed N (unit is 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＜t3, t2 is the second temperature value, t3 is the 3rd temperature value, and rotation speed of the fan and the hydraulic fluid temperature value T of the described radiator 13 of described controller 12 controls are the Convex Functions relation; If T〉t3, the described radiator 13 of described controller 12 controls moves with maximum permissible revolution Nmax.
The operating temperature of hydraulic oil was determined when described the second temperature value t2 can work according to the low load of engineering machinery, and at this second temperature value t2 or following, radiator 13 can with lower rotation speed of the fan work, can satisfy radiating requirements fully; The operating temperature upper limit of hydraulic oil was determined when described the 3rd temperature value t3 can work according to the engineering machinery top load, and more than the 3rd temperature value t3, radiator 13 need to move with peak power, and rotation speed of the fan is the highest.
Particularly, as shown in Figure 5, for strengthening the 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, the rotation speed of the fan of the described radiator 13 of described controller 12 controls and hydraulic fluid temperature value T be Convex Functions relation (being the top that the segmental arc of any point-to-point transmission on the curve always is positioned at these 2 lines) as shown in Figure 5.
If T〉t3, the described radiator 13 of described controller 12 controls is with maximum permissible revolution Nmax operation, as shown in Figure 5.
Preferably, described radiating control pattern also comprises and reduces the heat dissipation capacity Mode B, when described controller 12 is operated in described when reducing the heat dissipation capacity Mode B: if T＜t1, t1 is the first temperature value, and the described radiator 13 of described controller 12 controls moves with minimum permission rotational speed N min; If t1≤T＜t2, the rotation speed of the fan of the described radiator 13 of described controller 12 controls increases and at the uniform velocity increases with described hydraulic fluid temperature value T's; If t2≤T＜t3, rotation speed of the fan and the hydraulic fluid temperature value T of the described radiator 13 of described controller 12 controls are lower convex function relation.
As shown in Figure 7, be operated in described when reducing the heat dissipation capacity Mode B when described controller 12:
If T＜t1, t1 is the first temperature value, the described radiator 13 of described controller 12 controls moves with minimum permission rotational speed N min, 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 move with lowest power.
If t1≤T＜t2, the rotation speed of the fan of the described radiator 13 of described controller 12 controls increases and at the uniform velocity increases with described hydraulic fluid temperature value T's.As shown in Figure 7, the rotation speed of the fan of radiator 13 and hydraulic fluid temperature value T are linear relationship.
If t2≤T＜t3, rotation speed of the fan and the hydraulic fluid temperature value T of the described radiator 13 of described controller 12 controls are lower convex function relation, as shown in Figure 7, namely the rotation speed of the fan of radiator 13 and hydraulic fluid temperature value T are lower convex function relation (segmental arc of any point-to-point transmission always is positioned at the below of these 2 lines on the curve).
According to another embodiment of the invention, described radiating control pattern comprises and reduces the heat dissipation capacity Mode B, when described controller 12 is operated in described when reducing the heat dissipation capacity Mode B: if T＜t1, t1 is the first temperature value, and the described radiator 13 of described controller 12 controls moves with minimum permission rotational speed N min; If t1≤T＜t2, t2 are the second temperature value, the rotation speed of the fan of the described radiator 13 of described controller 12 controls increases and at the uniform velocity increases with described hydraulic fluid temperature value T's; If t2≤T＜t3, t3 are the 3rd temperature value, rotation speed of the fan and the hydraulic fluid temperature value T of the described radiator 13 of described controller 12 controls are lower convex function relation (as shown in Figure 6).
Preferably, described radiating control pattern also comprises increasing heat dissipation capacity Mode A, when described controller 12 was operated in described increasing heat dissipation capacity Mode A: if t2≤T＜t3, rotation speed of the fan and the hydraulic fluid temperature value T of the described radiator 13 of described controller 12 controls were the Convex Functions relation; If T〉t3, the described radiator 13 of described controller 12 controls is with maximum permissible revolution Nmax operation (as shown in Figure 7).
According to technical scheme of the present invention, described controller 12 initializations are reducing the heat dissipation capacity Mode B, if this moment, described hydraulic fluid temperature value T changed between t2≤T＜t3, then the rotation speed of the fan of the described radiator 13 of described controller 12 controls and hydraulic fluid temperature value T are lower convex function relation; Reduce heat dissipation capacity Mode B and T and be raised to t3 when above when described controller 12 is operated in, described controller 12 switches to and strengthens the heat dissipation capacity Mode A, if this moment, described hydraulic fluid temperature value T changed between t2≤T＜t3, then rotation speed of the fan and the hydraulic fluid temperature value T of the described radiator 13 of described controller 12 controls are the Convex Functions relation; Strengthen heat dissipation capacity Mode A and T and drop to t2 when following when described controller 12 is operated in, described controller 12 again switches back and reduces the heat dissipation capacity Mode B.
The present invention also provides a kind of engineering machinery cooling control method, and this control method comprises: receiving liquid force feed temperature value T; And the radiating control pattern of determining correspondence according to described hydraulic fluid temperature value T, and under determined radiating control pattern, according to hydraulic fluid temperature value T the heat radiation power of radiator 13 is regulated.Described radiator 13 can comprise fan, can regulate by the rotation speed of the fan of control radiator 13 heat radiation power of radiator 13.
According to technical scheme of the present invention, described radiating control pattern can comprise increasing heat dissipation capacity Mode A and reduce the heat dissipation capacity Mode B, in described increasing heat dissipation capacity Mode A, be the Convex Functions curve of the rotation speed of the fan take described hydraulic fluid temperature value T as transverse axis, described radiator 13 as the longitudinal axis with the interval corresponding control curve of described preset temperature; Reduce in the heat dissipation capacity Mode B described, be the lower convex functional curves of the rotation speed of the fan take described hydraulic fluid temperature value T as transverse axis, described radiator 13 as the longitudinal axis with the interval corresponding control curve of described preset temperature.
According to technical scheme of the present invention, initialization is reducing the heat dissipation capacity Mode B; Reduce heat dissipation capacity Mode B and described hydraulic fluid temperature value T and rise and exceed described preset temperature interval when above when being operated in, switch to and strengthen the heat dissipation capacity Mode A; Strengthen heat dissipation capacity Mode A and described hydraulic fluid temperature value T and descend and exceed described preset temperature interval when following when being operated in, again switch back and reduce the heat dissipation capacity Mode B.
Fig. 8 and Fig. 9 are the control flow charts according to the engineering machinery cooling control method of 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＜t3, t2 is the second temperature value, t3 is the 3rd temperature value, and the rotation speed of the fan and the hydraulic fluid temperature value T that control described radiator 13 are the Convex Functions relation; If T〉t3, control described radiator 13 and move with maximum permissible revolution Nmax.
The operating temperature of hydraulic oil was determined when described the second temperature value t2 can work according to the low load of engineering machinery, and at this second temperature value t2 or following, radiator 13 can with low rotation speed of the fan work, can satisfy radiating requirements fully; The operating temperature upper limit of hydraulic oil was determined when described the 3rd temperature value t3 can work according to the engineering machinery top load, and more than the 3rd temperature value t3, radiator 13 need to move with peak power, and rotation speed of the fan is the highest.
Particularly, as shown in Figure 8, strengthening under the heat dissipation capacity Mode A:
If t2≤T＜t3, the rotation speed of the fan and the hydraulic fluid temperature value T that control described radiator 13 are Convex Functions relation (representing with case4 in Fig. 7 and Fig. 8);
If T〉t3, control described radiator 13 with maximum permissible revolution Nmax operation (representing with case5) in Fig. 7 and Fig. 8.
Preferably, described radiating control pattern also comprises and reduces the heat dissipation capacity Mode B, and reduce under the heat dissipation capacity Mode B described: if T＜t1, t1 is the first temperature value, controls described radiator 13 and moves with minimum permission rotational speed N min; If t1≤T＜t2, the rotating speed of controlling described radiator 13 increases and at the uniform velocity increases with described hydraulic fluid temperature value T's; If t2≤T＜t3, the rotation speed of the fan and the hydraulic fluid temperature value T that control described radiator 13 are lower convex function relation.
As shown in Figure 8, reducing under the heat dissipation capacity Mode B:
If T＜t1 controls described radiator 13 and moves (representing with case1) with minimum permission rotational speed N min in Fig. 7 and Fig. 8;
If t1≤T＜t2, the rotating speed of controlling described radiator 13 increases and at the uniform velocity increases (representing with case2 in Fig. 7 and Fig. 8) with described hydraulic fluid temperature value T's;
If t2≤T＜t3, the rotation speed of the fan and the hydraulic fluid temperature value T that control described radiator 13 are lower convex function relation (representing with case3 in Fig. 7 and Fig. 8);
According to another embodiment of the invention, described radiating control pattern comprises and reduces the heat dissipation capacity Mode B, reduce under the heat dissipation capacity Mode B described: if T＜t1, t1 is the first temperature value, controls described radiator 13 with minimum permission rotational speed N min operation (representing with case1 in Fig. 8); If t1≤T＜t2, t2 is the second temperature value, and the rotating speed of controlling described radiator 13 increases and at the uniform velocity increases (representing with case2 in Fig. 8) with described hydraulic fluid temperature value T's; If t2≤T＜t3, t3 is the 3rd temperature value, and the rotation speed of the fan and the hydraulic fluid temperature value T that control described radiator 13 are lower convex function 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＜t3, t2 is the second temperature value, t3 is the 3rd temperature value, and the rotation speed of the fan and the hydraulic fluid temperature value T that control described radiator (13) are Convex Functions relation (representing with case4 in Fig. 8); If T〉t3, control described radiator 13 with maximum permissible revolution Nmax operation (representing with case5) in Fig. 8.
According to technical scheme of the present invention, initialization is reducing the heat dissipation capacity Mode B, if this moment, described hydraulic fluid temperature value T changed between t2≤T＜t3, the rotation speed of the fan and the hydraulic fluid temperature value T that then control described radiator 13 are lower convex function relation; Reduce heat dissipation capacity Mode B and T and be raised to t3 when above when being operated in, switch to and strengthen the heat dissipation capacity Mode A, if this moment, described hydraulic fluid temperature value T changed between t2≤T＜t3, the rotation speed of the fan and the hydraulic fluid temperature value T that then control described radiator 13 are the Convex Functions relation; Strengthen heat dissipation capacity Mode A and T and drop to t2 when following when being operated in, again switch back and reduce the heat dissipation capacity Mode B.
The present invention also provides a kind of excavator (not shown), and this excavator comprises engineering machinery cooling control system provided by the invention.
Engineering machinery cooling control system provided by the invention, control method and the excavator that comprises described control system, can under different operating modes, adopt different control strategies to regulate the rotation speed of the fan of radiator, so that radiator has had stronger adaptive ability, and improved control accuracy, guaranteed the complete machine fuel economy.
Below describe by reference to the accompanying drawings preferred embodiment of the present invention in detail; but; the present invention is not limited to the detail in the above-mentioned embodiment; in technical conceive scope 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.
Need to prove in addition, each concrete technical characterictic described in the above-mentioned specific embodiment in reconcilable situation, can make up by any suitable mode, for fear of unnecessary repetition, the present invention is to the no longer separately explanation of various possible combinations.
In addition, also can carry out any combination between the various 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 (18)
1. an engineering machinery cooling control system is characterized in that, this control system comprises:
Receiver (11) is used for receiving liquid force feed temperature value T; And
Controller (12), comprise at least two kinds of radiating control patterns, this controller (12) is used for determining corresponding radiating control pattern according to described hydraulic fluid temperature value T, and according to hydraulic fluid temperature value T the heat radiation power of radiator (13) is regulated under determined radiating control pattern.
2. control system according to claim 1 is characterized in that, described radiator (13) comprises fan, and described controller (12) is regulated the heat radiation power of described radiator (13) by the rotation speed of the fan of control radiator (13).
3. control system according to claim 2 is characterized in that, the control curve of described radiating control pattern comprises and the interval corresponding closed loop curve of a preset temperature.
4. control system according to claim 3 is characterized in that, 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＜t3, t2 are the second temperature value, t3 is the 3rd temperature value, and rotation speed of the fan and hydraulic fluid temperature value T that described controller (12) is controlled described radiator (13) are the Convex Functions relation;
If T〉t3, the rotation speed of the fan that described controller (12) is controlled described radiator (13) is maximum permissible revolution Nmax.
5. control system according to claim 4 is characterized in that, described radiating control pattern also comprises and reduce the heat dissipation capacity Mode B, when described controller (12) is operated in described when reducing the heat dissipation capacity Mode B:
If T＜t1, t1 are the first temperature value, the rotation speed of the fan that described controller (12) is controlled described radiator (13) is minimum permission rotational speed N min;
If the rotation speed of the fan that t1≤T＜t2, described controller (12) control described radiator (13) increases and at the uniform velocity increases with described hydraulic fluid temperature value T's;
If it is lower convex function relation that t2≤T＜t3, described controller (12) control rotation speed of the fan and the hydraulic fluid temperature value T of described radiator (13).
6. control system according to claim 5 is characterized in that,
Described controller (12) initialization is reducing the heat dissipation capacity Mode B, if this moment, described hydraulic fluid temperature value T changed between t2≤T＜t3, then described controller (12) rotation speed of the fan of controlling described radiator (13) is that lower convex function concerns with hydraulic fluid temperature value T;
Reduce heat dissipation capacity Mode B and T and be raised to t3 when above when described controller (12) is operated in, described controller (12) switches to and strengthens the heat dissipation capacity Mode A, if this moment, described hydraulic fluid temperature value T changed between t2≤T＜t3, then described controller (12) rotation speed of the fan of controlling described radiator (13) is that Convex Functions concerns with hydraulic fluid temperature value T;
Strengthen heat dissipation capacity Mode A and T and drop to t2 when following when described controller (12) is operated in, described controller (12) again switches back and reduces the heat dissipation capacity Mode B.
7. control system according to claim 3 is characterized in that, described radiating control pattern comprises and reduce the heat dissipation capacity Mode B, when described controller (12) is operated in described when reducing the heat dissipation capacity Mode B:
If T＜t1, t1 are the first temperature value, the rotation speed of the fan that described controller (12) is controlled described radiator (13) is minimum permission rotational speed N min;
If t1≤T＜t2, t2 are the second temperature value, the rotation speed of the fan that described controller (12) is controlled described radiator (13) increases and at the uniform velocity increases with described hydraulic fluid temperature value T's;
If t2≤T＜t3, t3 are the 3rd temperature value, rotation speed of the fan and hydraulic fluid temperature value T that described controller (12) is controlled described radiator (13) are lower convex function relation.
8. control system according to claim 7 is characterized in that, 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 it is the Convex Functions relation that t2≤T＜t3, described controller (12) control rotation speed of the fan and the hydraulic fluid temperature value T of described radiator (13);
If T〉t3, the rotation speed of the fan that described controller (12) is controlled described radiator (13) is maximum permissible revolution Nmax.
9. control system according to claim 8 is characterized in that,
Described controller (12) initialization is reducing the heat dissipation capacity Mode B, if this moment, described hydraulic fluid temperature value T changed between t2≤T＜t3, then described controller (12) rotation speed of the fan of controlling described radiator (13) is that lower convex function concerns with hydraulic fluid temperature value T;
Reduce heat dissipation capacity Mode B and T and be raised to t3 when above when described controller (12) is operated in, described controller (12) switches to and strengthens the heat dissipation capacity Mode A, if this moment, described hydraulic fluid temperature value T changed between t2≤T＜t3, then described controller (12) rotation speed of the fan of controlling described radiator (13) is that Convex Functions concerns with hydraulic fluid temperature value T;
Strengthen heat dissipation capacity Mode A and T and drop to t2 when following when described controller (12) is operated in, described controller (12) again switches back and reduces the heat dissipation capacity Mode B.
10. 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 fluid temperature value T, and under determined radiating control pattern, according to hydraulic fluid temperature value T the heat radiation power of radiator (13) is regulated.
11. control method according to claim 10 is characterized in that, described radiator (13) comprises fan, regulates the heat radiation power of described radiator (13) by the rotation speed of the fan of control radiator (13).
12. control method according to claim 11 is characterized in that, the control curve of described radiating control pattern comprises and the interval corresponding closed loop curve of a preset temperature.
13. control method according to claim 12, it is characterized in that, described radiating control pattern comprises increasing heat dissipation capacity Mode A and reduces the heat dissipation capacity Mode B, in described increasing heat dissipation capacity Mode A, with the interval corresponding control curve of described preset temperature for take described hydraulic fluid temperature value T as transverse axis, the rotation speed of the fan of described radiator (13) is the Convex Functions curve of the longitudinal axis; Reduce in the heat dissipation capacity Mode B described, with the interval corresponding control curve of described preset temperature for take described hydraulic fluid temperature value T as transverse axis, the rotation speed of the fan of described radiator (13) is the lower convex functional curves of the longitudinal axis.
14. control method according to claim 13 is characterized in that, initialization is reducing the heat dissipation capacity Mode B;
Reduce heat dissipation capacity Mode B and described hydraulic fluid temperature value T and rise and exceed described preset temperature interval when above when being operated in, switch to and strengthen the heat dissipation capacity Mode A;
Strengthen heat dissipation capacity Mode A and described hydraulic fluid temperature value T and descend and exceed described preset temperature interval when following when being operated in, again switch back and reduce the heat dissipation capacity Mode B.
15. control method according to claim 12 is characterized in that, described radiating control pattern comprises increasing heat dissipation capacity Mode A, under described increasing heat dissipation capacity Mode A:
If t2≤T＜t3, t2 are the second temperature value, t3 is the 3rd temperature value, and the rotation speed of the fan and the hydraulic fluid temperature value T that control described radiator (13) are the Convex Functions relation;
If T〉t3, the rotation speed of the fan of controlling described radiator (13) is maximum permissible revolution Nmax.
16. control method according to claim 15 is characterized in that, described radiating control pattern also comprises and reduces the heat dissipation capacity Mode B, reduces under the heat dissipation capacity Mode B described:
If T＜t1, t1 is the first temperature value, and the rotation speed of the fan of controlling described radiator (13) is minimum permission rotational speed N min;
If t1≤T＜t2, the rotation speed of the fan of controlling described radiator (13) increases and at the uniform velocity increases with described hydraulic fluid temperature value T's;
If t2≤T＜t3, the rotation speed of the fan and the hydraulic fluid temperature value T that control described radiator (13) are lower convex function relation.
17. control method according to claim 16 is characterized in that,
Initialization is reducing the heat dissipation capacity Mode B, if this moment, described hydraulic fluid temperature value T changed between t2≤T＜t3, the rotation speed of the fan and the hydraulic fluid temperature value T that then control described radiator (13) are lower convex function relation;
Reduce heat dissipation capacity Mode B and T and be raised to t3 when above when being operated in, switch to and strengthen the heat dissipation capacity Mode A, if this moment, described hydraulic fluid temperature value T changed between t2≤T＜t3, the rotation speed of the fan and the hydraulic fluid temperature value T that then control described radiator (13) are the Convex Functions relation;
Strengthen heat dissipation capacity Mode A and T and drop to t2 when following when being operated in, again switch back and reduce the heat dissipation capacity Mode B.
18. an excavator is characterized in that, this excavator comprises the described engineering machinery cooling control system of each claim among the claim 1-9.
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Cited By (6)
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| CN103527566A (en) * | 2013-10-16 | 2014-01-22 | 上海中联重科桩工机械有限公司 | Engineering machine heat radiating control device, system and method and engineering machine |
| CN104114777A (en) * | 2014-05-14 | 2014-10-22 | 株式会社小松制作所 | Working vehicle |
| CN109470379A (en) * | 2017-09-07 | 2019-03-15 | 发那科株式会社 | Temperature estimating device and temperature estimation method |
| CN111536109A (en) * | 2020-04-30 | 2020-08-14 | 三一重机有限公司 | Oil temperature control method and device and engineering machinery |
| CN113775606A (en) * | 2021-08-23 | 2021-12-10 | 中联重科股份有限公司 | Control method and control device for hydraulic oil cooling system and processor |
| CN114837798A (en) * | 2022-04-28 | 2022-08-02 | 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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| CN109470379B (en) * | 2017-09-07 | 2020-02-28 | 发那科株式会社 | Temperature estimation device and temperature estimation method |
| CN111536109A (en) * | 2020-04-30 | 2020-08-14 | 三一重机有限公司 | Oil temperature control method and device and engineering machinery |
| CN113775606A (en) * | 2021-08-23 | 2021-12-10 | 中联重科股份有限公司 | Control method and control device for hydraulic oil cooling system and processor |
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| 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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