CN103527566A - Engineering machine heat radiating control device, system and method and engineering machine - Google Patents
Engineering machine heat radiating control device, system and method and engineering machine Download PDFInfo
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Abstract
The invention discloses an engineering machine heat radiating control device, system and method and an engineering machine. The engineering machine comprises a heat radiator, a motor and a hydraulic pump. The engineering machine heat radiating control device comprises a receiving device and a control device body, wherein the receiving device is used for receiving the temperature T of hydraulic oil, if the T is lower than or equal to a first preset temperature t1, the control device adjusts the rotation speed of the heat radiator according to the lowest rotation speed, if the T is higher than or equal to a sixth preset temperature t6, the control device adjusts the rotation speed of the heat radiator according to the highest rotation speed, and if the T is higher than the t1 and lower than the t6, a first control curve is determined inside a loop area according to the T, and the control device adjusts the rotation speed of the heat radiator according to the first control curve. If the temperature exceeds the temperature range of the first control curve during rotation adjustment, a second control curve is determined in the loop area according to the temperature, and the rotation speed of the heat radiator is adjusted according to the second control curve. The temperature range of the first control curve is different from the temperature range of the second control curve. The control curve can be adjusted according to the heat radiating effect of the former control curve, the optimal control curve suitable for the current working condition is searched, the control accuracy is improved, and the fuel economy of the whole machine is guaranteed.
Description
Technical field
The present invention relates to engineering machinery field, particularly, relate to a kind of engineering machinery radiating control equipment, system, method and engineering machinery.
Background technique
Radiator is the core of hydraulic construction machine (for example hydraulic shovel) radiation system, if radiator cisco unity malfunction, it is many unfavorable to cause power system.Normally, hydraulic construction machine radiating control is mainly by detecting hydraulic fluid temperature value, according to the size of current of hydraulic fluid temperature value control ratio solenoid valve, hydraulic pressure pump delivery is regulated, and then driving oil hydraulic motor, by the rotating speed of oil hydraulic motor control radiator, make it meet heat radiation requirement.
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 1 or 2, in illustrated system of coordinates, transverse axis represents that hydraulic fluid temperature T(unit is for degree Celsius (℃)), the longitudinal axis represents radiator rotational speed N (unit is rev/min (m/min)), when hydraulic fluid temperature T is less than t, radiator is by minimum speed Nmin operation; When hydraulic fluid temperature, T is greater than t ' time, and radiator is pressed maximum (top) speed Nmax operation; When hydraulic fluid temperature T is between t and t ', radiator rotational speed N and hydraulic fluid temperature T are 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 object of this invention is to provide a kind of engineering machinery radiating control equipment, system, method and engineering machinery, to realize self adaptive control, and control accuracy is high, guarantees complete machine fuel economy.
To achieve these goals, the invention provides a kind of engineering machinery radiating control equipment, this project machinery comprises radiator, for driving the motor of described radiator and providing the oil hydraulic pump of hydraulic oil for described motor, this equipment comprises: reception unit, for receiving the temperature T of described hydraulic oil; And control gear, for: if T≤the first predetermined temperature t1 regulates radiator rotating speed with minimum speed Nmin; If T>=six predetermined temperature t6, regulates radiator rotating speed with maximum speed Nmax; And if t1<T<t6: according to described temperature T, in the closed loop region that basis forms, determine that first controls curve take a plurality of predetermined temperatures and a plurality of predetermined heat dissipation device rotating speeds corresponding with described a plurality of predetermined temperatures; According to described first, control curve adjustment radiator rotating speed; And in the situation that occur during described adjusting radiator rotating speed that the temperature T of hydraulic oil exceeds the temperature range of described the first control curve, according to this temperature T, in described closed loop region, determine that second controls curve, and according to this second control curve adjustment radiator rotating speed, wherein, the described first temperature range of controlling curve is different from the temperature range of described the second control curve.
The present invention also provides a kind of engineering machinery cooling control system, this project machinery comprises radiator, for driving the motor of described radiator and providing the oil hydraulic pump of hydraulic oil for described motor, described system comprises: temperature-detecting device, for detection of the temperature T of described hydraulic oil; And above-mentioned control apparatus.
The present invention also provides a kind of engineering machinery that comprises said system.
The present invention also provides a kind of engineering machinery cooling control method, and this project machinery comprises radiator, for driving the motor of described radiator and for described motor provides the oil hydraulic pump of hydraulic oil, the method comprises: the temperature T that receives described hydraulic oil; If T≤the first predetermined temperature t1, regulates radiator rotating speed with minimum speed Nmin; If T>=six predetermined temperature t6, regulates radiator rotating speed with maximum speed Nmax; And if t1<T<t6: according to described temperature T, in the closed loop region that basis forms, determine that first controls curve take a plurality of predetermined temperatures and a plurality of predetermined heat dissipation device rotating speeds corresponding with described a plurality of predetermined temperatures; According to described first, control curve adjustment radiator rotating speed; And in the situation that occur during described adjusting radiator rotating speed that the temperature T of hydraulic oil exceeds the temperature range of described the first control curve, according to this temperature T, in described closed loop region, determine that second controls curve, and according to this second control curve adjustment radiator rotating speed, wherein, the described first temperature range of controlling curve is different from the temperature range of described the second control curve.
Pass through technique scheme, can to controlling curve, adjust according to the radiating effect of last control curve, find the optimal control curve that is applicable to current working, thereby can under different operating modes, adopt different control strategies to regulate radiator rotating speed, improve control accuracy, guaranteed complete machine fuel economy.
Other features and advantages of the present invention partly in detail are described the embodiment subsequently.
Accompanying drawing explanation
Accompanying drawing is to be used to provide a further understanding of the present invention, and forms a part for specification, is used from explanation the present invention, but is not construed as limiting the invention with embodiment one below.In the accompanying drawings:
Fig. 1 and Fig. 2 are the corresponding relation schematic diagram between existing hydraulic fluid temperature and radiator rotating speed;
Fig. 3 is the structural drawing of engineering machinery radiating control equipment according to the embodiment of the present invention;
Fig. 4 is hydraulic fluid temperature according to the embodiment of the present invention and the corresponding relation schematic diagram between radiator rotating speed;
Fig. 5 is the flow chart of control curve choosing method according to the embodiment of the present invention;
Fig. 6 is the structural drawing of engineering machinery cooling control system according to the embodiment of the present invention; And
Fig. 7 is the flow chart of engineering machinery cooling control method according to the embodiment of the present invention.
Description of reference numerals
10 radiating control equipment 101 reception unit 102 control gear
20 temperature-detecting device 30 speed detector 40 oil hydraulic pump aperture collecting devices
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated.Should be understood that, embodiment described herein only, for description and interpretation the present invention, is not limited to the present invention.
Fig. 3 shows the structural drawing of engineering machinery radiating control equipment according to the embodiment of the present invention.Wherein, described engineering machinery can comprise radiator, for driving the motor of described radiator and providing the oil hydraulic pump (aperture of this oil hydraulic pump can be regulated by a proportional electromagnetic valve, and this oil hydraulic pump can be driven by motor) of hydraulic oil for described motor.As shown in Figure 3, described radiating control equipment 10 can comprise: reception unit 101, for receiving the temperature T of described hydraulic oil; And control gear 102, for: if T≤the first predetermined temperature t1 regulates radiator rotating speed with minimum speed Nmin; If T>=six predetermined temperature t6, regulates radiator rotating speed with maximum speed Nmax; And if t1<T<t6: according to described temperature T, in the closed loop region that basis forms, determine that first controls curve take a plurality of predetermined temperatures and a plurality of predetermined heat dissipation device rotating speeds corresponding with described a plurality of predetermined temperatures; According to described first, control curve adjustment radiator rotating speed; And in the situation that occur during described adjusting radiator rotating speed that the temperature T of hydraulic oil exceeds the temperature range of described the first control curve, according to this temperature T, in described closed loop region, determine that second controls curve, and according to this second control curve adjustment radiator rotating speed, wherein, the described first temperature range of controlling curve is different from the temperature range of described the second control curve.
Thus, can to controlling curve, adjust according to the radiating effect of last control curve, find the optimal control curve that is applicable to current working, thereby can under different operating modes, adopt different control strategies to regulate radiator rotating speed, improve control accuracy, guaranteed complete machine fuel economy.
Particularly, in the situation that described temperature T is less than the lower limit of the temperature range of described the first control curve, the direction skew that the described second lower limit of controlling the temperature range of curve reduces to temperature compared to the described first lower limit of controlling the temperature range of curve; Or in the situation that described temperature T is greater than the upper limit of the temperature range of described the first control curve, the direction skew that described second upper limit of controlling the temperature range of curve increases to temperature compared to described first upper limit of controlling the temperature range of curve.
Below in conjunction with Fig. 4, describe how self adaption is determined the method for controlling curve in detail.
As shown in Figure 4, corresponding relation between hydraulic fluid temperature T and radiator rotational speed N can comprise three parts, being respectively the first portion that controls with minimum speed Nmin, take a plurality of predetermined temperatures and a plurality of predetermined heat dissipation device rotating speeds corresponding with described a plurality of predetermined temperatures is the closed loop region (that is, second portion) that forms, basis and the third part of controlling with maximum speed Nmax.
In described closed loop region, described a plurality of predetermined temperature is respectively the first predetermined temperature t1, the 3rd predetermined temperature t3, the 4th predetermined temperature t4 and the 6th predetermined temperature t6, corresponding radiator rotating speed is respectively minimum speed Nmin, the second rotational speed N 2, the first rotational speed N 1 and maximum speed Nmax, and described closed loop region is for take the quadrilateral that b, h, c, j be summit, wherein the coordinate of b, h, c, j is respectively (t1, Nmin), (t3, N2), (t4, N1), (t6, Nmax).
In the situation that received hydraulic fluid temperature T≤t1, described control gear 102 is controlled radiator rotating speed with minimum speed Nmin, that is, controlling curve is the ab straight line (case1) in Fig. 4.In the situation that received hydraulic fluid temperature T >=t6, described control gear 102 is controlled radiator rotating speed with maximum speed Nmax, that is, controlling curve is the jk straight line (case3) in Fig. 4.And in the situation that received hydraulic fluid temperature T between t1 and t6, described control gear 102 is chosen optimum control curve in described closed loop region according to described temperature T, so that radiator rotating speed is controlled.
Described control gear 102 is when determining control curve, intermediate variable Enable can be set according to received temperature T, to assist, determine described control curve, wherein, if T >=five temperature t 5, described control gear 102 is set to 1 by Enable, if T≤t1, described control gear 102 is set to 0 by Enable, and wherein the lower limit of t5 is temperature corresponding with described the second rotational speed N 2 on straight line cj, and the CLV ceiling limit value of t5 is t6.
As shown in Figure 4, after radiator rotating speed being controlled with minimum speed Nmin, if Enable=0 and t1 < T < t5, the first control curve that described control gear 102 is determined in described closed loop region is the curve (case2) along bc-ce path, and wherein e point is the upper point corresponding with t5 of straight line cj.Temperature range corresponding to the first control curve is t1～t5.
After determining this first control curve, described control gear 102 regulates radiator rotating speed according to this first control curve.At conditioning period, if occur, hydraulic fluid temperature T exceeds in the situation of the temperature range that the first control curve is corresponding, and described control gear 102 determines in described closed loop region that according to this temperature T second controls curve.
For example, during the control curve with along bc-ce path carries out rotational speed regulation, if received temperature T > t5(now arranges Enable=1), control gear 102 is determined along the control curve in bc-ce path not optimum, its second control curve of determining is the curve (case X) along gf-fe-ee ' path, wherein e ' is the upper point corresponding with t5 ' of straight line cj, this t5 '=t5+x, and x is default Recursive Step; F point makes straight line fe be parallel to the point of straight line bc on straight line bh; G point for straight line bh is upper and t2(the second temperature) corresponding point, this t2 is a setting temperature, its initial value is t1+x.This second temperature range of controlling curve is t2～t5 '.
After determining the second control curve, control gear 102 regulates radiator rotating speed according to this second control curve.As can be seen from Figure 4, during according to the first control curve bc-ce adjusting rotary speed, if (temperature T exceeds this first upper limit of controlling curve, t5), the direction skew that second upper limit of controlling the temperature range of curve (gf-fe-ee ') of determining increases to temperature compared to described first upper limit of controlling the temperature range of curve.
After determining the second control curve, described control gear 102 increases progressively x by t5, i.e. t5=t5+x.
Thus, in described closed loop region, control gear can be chosen adaptively optimal control curve according to hydraulic fluid temperature T in this closed loop region, not only can choose the control curve at this edges of regions place, can also choose the control curve in this edges of regions, further improve control accuracy.
Described control gear 102 is also for exceeding the described second temperature range of controlling curve in the situation that control according to described second the temperature T that occurs hydraulic oil during curve adjustment radiator rotating speed, according to the temperature T of this hydraulic oil, in described closed loop region, redefine the second control curve, and according to described the second control curve adjustment radiator rotating speed redefining.And original the second control curve of determining can be used as the first control curve.
For example, after pressing the second control curve adjustment radiator rotating speed in gf-fe-ee ' path, if there is t1 < T < t2, described control gear 102 judges that it is not optimum that curve is controlled in second of gf-fe-ee ' paths, and it need to redefine the second control curve.As shown in Figure 4, its second control curve redefining out is the curve (case Y) along bg-gd-de ' path, and wherein, d point makes straight line gd be parallel to the point of straight line bc on straight line cj.Afterwards, the second control curve that control gear 102 redefines out according to this is controlled radiator rotating speed, and t2 is increased progressively to x, i.e. t2=t2+x.This second temperature range of controlling curve redefining out is t1～t5 ', that is to say, during carrying out rotational speed regulation with a control curve, if described temperature T be less than this control curve temperature range lower limit (for example, T < t2) in situation, the direction skew that the lower limit of the temperature range of the control curve redefining out reduces to temperature compared to the lower limit of the temperature range of this control curve.
Said process continues to carry out.; during the control curve by along bg-gd-de ' path carries out rotational speed regulation; if there is T > this t5 of t5(is compared to being incremented before x); control gear 102 determines that new control curve is g ' f '-f ' e '-e ' e ' ', and wherein e ' ' is the upper point corresponding with t5 ' (this t5 ' is compared to being incremented before x) of straight line cj; F ' point is for making straight line f ' e ' be parallel to the point of straight line bc on straight line bh; G ' point is gone up with this t2 of t2(compared to being incremented before x for straight line bh) corresponding point.Meanwhile, t5 is incremented x again.
Afterwards, if occur, this t2 of t1 < T < t2(is compared to being incremented before x) time, the control curve that control gear 102 redefines out is along bg '-g ' d '-d ' e ' ', wherein, d ' point is for making straight line g ' d ' be parallel to the point of straight line bc on straight line cj.Meanwhile, t2 is incremented x again.
From finding out controlling the detailed description of the variation of curve in conjunction with Fig. 4 above, the first control curve and second is controlled curve and not only in temperature range, is had above-mentioned offsets, also there is following feature in its corresponding radiator rotating speed: in the situation that temperature T is less than the lower limit of the temperature range of the first control curve, for at least this first and second controls curve across for the arbitrary temperature in the related temperature range of the part in described closed loop region, described second controls in curve corresponding to the radiator rotating speed of this temperature lower than the described first radiator rotating speed of controlling in curve corresponding to this temperature, or in the situation that described temperature T is greater than the upper limit of the temperature range of described the first control curve, for at least this first and second controls curve across for the arbitrary temperature in the related temperature range of the part in described closed loop region, described second controls in curve corresponding to the radiator rotating speed of this temperature higher than the described first radiator rotating speed of controlling in curve corresponding to this temperature.
By adjusting controlling curve, can travel through whole closed loop region and find optimal control curve.For example, during according to a control curve adjustment radiator rotating speed, the temperature T that occurs hydraulic oil exceeds in the situation of lower limit of temperature range of this control curve, with a predetermined step-length (for example, above-mentioned Recursive Step x) towards the last control curve that surpasses its upper limit of the direction translation that increases radiator rotating speed across closed loop area part, and determine another control curve according to the part after this translation, according to this, control curve adjustment radiator rotating speed, to travel through described closed loop region; Or during according to a control curve adjustment radiator rotating speed, the temperature T that occurs hydraulic oil exceeds in the situation of the upper limit of temperature range of this control curve, with a predetermined step-length (for example, above-mentioned Recursive Step x) towards the last control curve that surpasses its lower limit of the direction translation that increases radiator rotating speed across closed loop area part, and determine another control curve according to the part after this translation, according to this, control curve adjustment radiator rotating speed, to travel through described closed loop region.
In above-mentioned six default temperature t 1, t2, t3, t4, t5, t6, t1, t3, t4 and t6 are all changeless preset temperatures, and t2 and t5 all change with Recursive Step x, thus, control also respective change in closed loop region of curve.As long as it is suitable that step-length x chooses, control curve and can travel through whole closed loop region, the institute in this closed loop region is a little all optional, greatly improves control accuracy, and adaptive ability is strong.
Fig. 5 shows the flow chart of above-described control curve choosing method.As shown in Figure 5, first judge whether parameter Enable equals 0.If so, judge whether temperature T is less than t1.If so, by case1 curve, carrying out speed governing.Otherwise, by case2 curve, carry out speed governing.The Enable of judgement be before not equal to 0 or by the speed governing of case2 curve after there is T < t5, Enable=1, and carry out speed governing by case X curve.After pressing the speed governing of case X curve, if T>=t6 carries out speed governing by case3 curve; If T>=t5, increases progressively x by t5, i.e. t5=t5+x; If T<t2, carries out speed governing by case Y curve, and t2 is increased progressively to x, be i.e. t2=t2+x.After pressing the speed governing of case Y curve, if T≤t1 is set to 0 by Enable.So, control curve changes with Recursive Step in closed loop region.
Radiator rotating speed can be based on motor rotating speed and the control electric current of proportional electromagnetic valve.So, described reception unit 101 is also for receiving engine speed; And described control gear 102 comprises according to the first determined control curve or the second control curve adjustment radiator rotating speed: according to determined the first control curve or second, control curve and determine the radiator theoretical rotational speed corresponding with received temperature T; According to described theoretical rotational speed and received engine speed, determine described control electric current; According to determined control electric current, regulate described proportional electromagnetic valve, to regulate described radiator rotating speed.
Particularly, radiator rotating speed depends on the rotating speed of motor, and the rotating speed of motor depends on the flow of oil hydraulic pump, and the flow of oil hydraulic pump depends on the rotating speed of hydraulic pressure pump delivery and oil hydraulic pump.And the control electric current of proportional electromagnetic valve is for the aperture of regulator solution press pump, its control be hydraulic pressure pump delivery, engine speed is for controlling the rotating speed of oil hydraulic pump, therefore, control gear 102 can be determined according to engine speed and radiator theoretical rotational speed the size of described control electric current, then according to determined control electric current, regulate described proportional electromagnetic valve, so that radiator rotating speed reaches this theoretical rotational speed.And radiator theoretical rotational speed can be determined by hydraulic fluid temperature T and the control of determining curve.
In addition, described reception unit 101 can also be for receiving the aperture signal of described oil hydraulic pump; And described control gear 102 can also be for carrying out auxiliary adjustment radiator rotating speed according to the aperture of described oil hydraulic pump.So, whether the aperture that described control gear 102 can Real-Time Monitoring oil hydraulic pump reaches required aperture (corresponding with radiator desired speed), in the situation that not reaching, its by regulate proportional electromagnetic valve by the regulation of oil hydraulic pump to required aperture.
Fig. 6 shows the structural drawing of engineering machinery cooling control system according to the embodiment of the present invention.As shown in Figure 6, described system can comprise: temperature-detecting device 20, for detection of the temperature T of hydraulic oil; And above-mentioned radiating control equipment 10.
In addition, described system can also comprise: speed detector 30, for detection of the rotating speed of motor; And oil hydraulic pump aperture collecting device 40, for detection of the aperture of oil hydraulic pump.
Described radiating control equipment 10 is after receiving the temperature T of hydraulic oil, engine speed and oil hydraulic pump aperture signal, and the operation of its correspondence have been described in detail in conjunction with Fig. 3 and Fig. 4 in the above, just repeats no more herein.
Fig. 7 shows the flow chart of engineering machinery cooling control method according to the embodiment of the present invention.As shown in Figure 7, the method can comprise: step 701, the temperature T of receiving liquid force feed.Step 702, the size of more described temperature T and the first predetermined temperature t1 and the 6th predetermined temperature t6.If T≤t1, step 703, regulates radiator rotating speed with minimum speed Nmin.If T >=t6, step 704, regulates radiator rotating speed with maximum speed Nmax.If t1 < T < t6, step 705, according to described temperature T, take a plurality of predetermined temperatures and a plurality of predetermined heat dissipation device rotating speeds as closed loop region that basis form in the definite first control curve corresponding with described a plurality of predetermined temperatures.Afterwards, step 706, controls curve adjustment radiator rotating speed according to described first.Step 707, judges whether temperature T exceeds the temperature range of described the first control curve.If so, step 708, according to this temperature T, determines that in described closed loop region second controls curve.Step 709, according to this second control curve adjustment radiator rotating speed.Otherwise, continue with the first control curve adjustment radiator rotating speed.Wherein, the described first temperature range of controlling curve is different from the temperature range of described the second control curve.
Particularly, in the situation that described temperature T is less than the lower limit of the temperature range of described the first control curve, the direction skew that the described second lower limit of controlling the temperature range of curve reduces to temperature compared to the described first lower limit of controlling the temperature range of curve; Or in the situation that described temperature T is greater than the upper limit of the temperature range of described the first control curve, the direction skew that described second upper limit of controlling the temperature range of curve increases to temperature compared to described first upper limit of controlling the temperature range of curve.
Although not shown in Fig. 7, but described method can also comprise: in the situation that occur that the temperature T of hydraulic oil exceeds the temperature range of described the second control curve during controlling curve adjustment radiator rotating speed according to described second, according to the temperature T of this hydraulic oil, in described closed loop region, redefine the second control curve, and according to described the second control curve adjustment radiator rotating speed redefining.
The first control curve and second is controlled curve and not only in temperature range, is had above-mentioned offsets, also there is following feature in its corresponding radiator rotating speed: in the situation that temperature T is less than the lower limit of the temperature range of the first control curve, for at least this first and second controls curve across for the arbitrary temperature in the related temperature range of the part in described closed loop region, described second controls in curve corresponding to the radiator rotating speed of this temperature lower than the described first radiator rotating speed of controlling in curve corresponding to this temperature; Or in the situation that described temperature T is greater than the upper limit of the temperature range of described the first control curve, for at least this first and second controls curve across for the arbitrary temperature in the related temperature range of the part in described closed loop region, described second controls in curve corresponding to the radiator rotating speed of this temperature higher than the described first radiator rotating speed of controlling in curve corresponding to this temperature.
By adjusting controlling curve, can travel through whole closed loop region and find optimal control curve.For example, during according to a control curve adjustment radiator rotating speed, the temperature T that occurs hydraulic oil exceeds in the situation of lower limit of temperature range of this control curve, with a predetermined step-length (for example, above-mentioned Recursive Step x) towards the last control curve that surpasses its upper limit of the direction translation that increases radiator rotating speed across closed loop area part, and determine another control curve according to the part after this translation, according to this, control curve adjustment radiator rotating speed, to travel through described closed loop region; Or during according to a control curve adjustment radiator rotating speed, the temperature T that occurs hydraulic oil exceeds in the situation of the upper limit of temperature range of this control curve, with a predetermined step-length (for example, above-mentioned Recursive Step x) towards the last control curve that surpasses its lower limit of the direction translation that increases radiator rotating speed across closed loop area part, and determine another control curve according to the part after this translation, according to this, control curve adjustment radiator rotating speed, to travel through described closed loop region.
Described engineering machinery also comprises for driving the motor of described oil hydraulic pump and for regulating the proportional electromagnetic valve of the aperture of described oil hydraulic pump, and the rotating speed of described radiator rotating speed based on described motor and the control electric current of described proportional electromagnetic valve, described method can also comprise reception engine speed; And above-mentionedly according to determined first, control curve or second and control the operation of curve adjustment radiator rotating speed and can comprise: according to determined first, control curve or second and control curve and determine the radiator theoretical rotational speed corresponding with received temperature T; According to described theoretical rotational speed and received engine speed, determine described control electric current; According to determined control electric current, regulate described proportional electromagnetic valve, to regulate described radiator rotating speed.
Described method can also comprise the aperture signal that receives described oil hydraulic pump; And carry out auxiliary adjustment radiator rotating speed according to the aperture of described oil hydraulic pump.
Pass through technique scheme, can to controlling curve, adjust according to the radiating effect of last control curve, find the optimal control curve that is applicable to current working, thereby can under different operating modes, adopt different control strategies to regulate radiator rotating speed, improve control accuracy, guaranteed complete machine fuel economy.
Below describe by reference to the accompanying drawings the preferred embodiment of the present invention in detail; but; the present invention is not limited to the detail in above-mentioned mode of execution; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technological 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 the concrete technical characteristics described in above-mentioned embodiment, in reconcilable situation, can combine by any suitable mode.For fear of unnecessary repetition, the present invention is to the explanation no longer separately of various possible compound modes.
In addition, between various mode of execution of the present invention, also can carry out combination in any, 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 radiating control equipment, this project machinery comprises radiator, for driving the motor of described radiator and for described motor provides the oil hydraulic pump of hydraulic oil, it is characterized in that, this equipment comprises:
Reception unit, for receiving the temperature T of described hydraulic oil; And
Control gear, for:
If T≤the first predetermined temperature t1, regulates radiator rotating speed with minimum speed Nmin;
If T >=six predetermined temperature t6, regulates radiator rotating speed with maximum speed Nmax; And
If t1 < T < t6:
According to described temperature T, take a plurality of predetermined temperatures and a plurality of predetermined heat dissipation device rotating speeds as closed loop region that basis form in the definite first control curve corresponding with described a plurality of predetermined temperatures;
According to described first, control curve adjustment radiator rotating speed; And
In the situation that occur during described adjusting radiator rotating speed that the temperature T of hydraulic oil exceeds the temperature range of described the first control curve, according to this temperature T, in described closed loop region, determine that second controls curve, and according to this second control curve adjustment radiator rotating speed, wherein, the described first temperature range of controlling curve is different from the temperature range of described the second control curve.
2. equipment according to claim 1, is characterized in that,
In the situation that described temperature T is less than the lower limit of the temperature range of described the first control curve, the direction skew that the described second lower limit of controlling the temperature range of curve reduces to temperature compared to the described first lower limit of controlling the temperature range of curve; Or
In the situation that described temperature T is greater than the upper limit of the temperature range of described the first control curve, the direction skew that described second upper limit of controlling the temperature range of curve increases to temperature compared to described first upper limit of controlling the temperature range of curve.
3. equipment according to claim 1 and 2, is characterized in that,
In the situation that described temperature T is less than the lower limit of the temperature range of described the first control curve, for at least this first and second controls curve across for the arbitrary temperature in the related temperature range of the part in described closed loop region, described second controls in curve corresponding to the radiator rotating speed of this temperature lower than the described first radiator rotating speed of controlling in curve corresponding to this temperature; Or
In the situation that described temperature T is greater than the upper limit of the temperature range of described the first control curve, for at least this first and second controls curve across for the arbitrary temperature in the related temperature range of the part in described closed loop region, described second controls in curve corresponding to the radiator rotating speed of this temperature higher than the described first radiator rotating speed of controlling in curve corresponding to this temperature.
4. equipment according to claim 3, is characterized in that,
During according to a control curve adjustment radiator rotating speed, the temperature T that occurs hydraulic oil exceeds in the situation of lower limit of temperature range of this control curve, with a predetermined step-length towards the last control curve that surpasses its upper limit of the direction translation that increases radiator rotating speed across closed loop area part, and determine another control curve according to the part after this translation, according to this, control curve adjustment radiator rotating speed, to travel through described closed loop region; Or
During according to a control curve adjustment radiator rotating speed, the temperature T that occurs hydraulic oil exceeds in the situation of the upper limit of temperature range of this control curve, with a predetermined step-length towards the last control curve that surpasses its lower limit of the direction translation that increases radiator rotating speed across closed loop area part, and determine another control curve according to the part after this translation, according to this, control curve adjustment radiator rotating speed, to travel through described closed loop region.
5. equipment according to claim 1, is characterized in that, described control gear also for:
In the situation that occur that the temperature T of hydraulic oil exceeds the temperature range of described the second control curve during controlling curve adjustment radiator rotating speed according to described second, according to the temperature T of this hydraulic oil, in described closed loop region, redefine the second control curve, and according to described the second control curve adjustment radiator rotating speed redefining.
6. equipment according to claim 1, wherein said engineering machinery also comprises for driving the motor of described oil hydraulic pump and for regulating the proportional electromagnetic valve of the aperture of described oil hydraulic pump, and the rotating speed of described radiator rotating speed based on described motor and the control electric current of described proportional electromagnetic valve, it is characterized in that
Described reception unit is also for receiving engine speed; And
Described control gear is controlled curve adjustment radiator rotating speed according to determined the first control curve or second and is comprised:
According to determined the first control curve or second, control curve and determine the radiator theoretical rotational speed corresponding with received temperature T;
According to described theoretical rotational speed and received engine speed, determine described control electric current;
According to determined control electric current, regulate described proportional electromagnetic valve, to regulate described radiator rotating speed.
7. equipment according to claim 1, it is characterized in that, described a plurality of predetermined temperature is respectively described the first predetermined temperature t1, the 3rd predetermined temperature t3, the 4th predetermined temperature t4 and described the 6th predetermined temperature t6, corresponding radiator rotating speed is respectively described minimum speed Nmin, the second rotational speed N 2, the first rotational speed N 1 and described maximum speed Nmax, and described closed loop region is for take the quadrilateral that b, h, c, j be summit, wherein the coordinate of b, h, c, j is respectively (t1, Nmin), (t3, N2), (t4, N1), (t6, Nmax).
8. equipment according to claim 1, is characterized in that,
Described reception unit is also for receiving the aperture signal of described oil hydraulic pump; And
Described control gear is also for carrying out auxiliary adjustment radiator rotating speed according to the aperture of described oil hydraulic pump.
9. an engineering machinery cooling control system, this project machinery comprises radiator, for driving the motor of described radiator and for described motor provides the oil hydraulic pump of hydraulic oil, it is characterized in that, described system comprises:
Temperature-detecting device, for detection of the temperature T of described hydraulic oil; And
According to the equipment described in arbitrary claim in claim 1-8.
10. an engineering machinery that comprises system claimed in claim 9.
11. 1 kinds of engineering machinery cooling control methods, this project machinery comprises radiator, for driving the motor of described radiator and for described motor provides the oil hydraulic pump of hydraulic oil, it is characterized in that, the method comprises:
Receive the temperature T of described hydraulic oil;
If T≤the first predetermined temperature t1, regulates radiator rotating speed with minimum speed Nmin;
If T >=six predetermined temperature t6, regulates radiator rotating speed with maximum speed Nmax; And
If t1 < T < t6:
According to described temperature T, take a plurality of predetermined temperatures and a plurality of predetermined heat dissipation device rotating speeds as closed loop region that basis form in the definite first control curve corresponding with described a plurality of predetermined temperatures;
According to described first, control curve adjustment radiator rotating speed; And
In the situation that occur during described adjusting radiator rotating speed that the temperature T of hydraulic oil exceeds the temperature range of described the first control curve, according to this temperature T, in described closed loop region, determine that second controls curve, and according to this second control curve adjustment radiator rotating speed, wherein, the described first temperature range of controlling curve is different from the temperature range of described the second control curve.
12. methods according to claim 11, is characterized in that,
In the situation that described temperature T is less than the lower limit of the temperature range of described the first control curve, the direction skew that the described second lower limit of controlling the temperature range of curve reduces to temperature compared to the described first lower limit of controlling the temperature range of curve; Or
In the situation that described temperature T is greater than the upper limit of the temperature range of described the first control curve, the direction skew that described second upper limit of controlling the temperature range of curve increases to temperature compared to described first upper limit of controlling the temperature range of curve.
13. according to the method described in claim 11 or 12, it is characterized in that,
In the situation that described temperature T is less than the lower limit of the temperature range of described the first control curve, for at least this first and second controls curve across for the arbitrary temperature in the related temperature range of the part in described closed loop region, described second controls in curve corresponding to the radiator rotating speed of this temperature lower than the described first radiator rotating speed of controlling in curve corresponding to this temperature; Or
In the situation that described temperature T is greater than the upper limit of the temperature range of described the first control curve, for at least this first and second controls curve across for the arbitrary temperature in the related temperature range of the part in described closed loop region, described second controls in curve corresponding to the radiator rotating speed of this temperature higher than the described first radiator rotating speed of controlling in curve corresponding to this temperature.
14. methods according to claim 13, is characterized in that,
During according to a control curve adjustment radiator rotating speed, the temperature T that occurs hydraulic oil exceeds in the situation of lower limit of temperature range of this control curve, with a predetermined step-length towards the last control curve that surpasses its upper limit of the direction translation that increases radiator rotating speed across closed loop area part, and determine another control curve according to the part after this translation, according to this, control curve adjustment radiator rotating speed, to travel through described closed loop region; Or
During according to a control curve adjustment radiator rotating speed, the temperature T that occurs hydraulic oil exceeds in the situation of the upper limit of temperature range of this control curve, with a predetermined step-length towards the last control curve that surpasses its lower limit of the direction translation that increases radiator rotating speed across closed loop area part, and determine another control curve according to the part after this translation, according to this, control curve adjustment radiator rotating speed, to travel through described closed loop region.
15. methods according to claim 11, is characterized in that, the method also comprises:
In the situation that occur that the temperature T of hydraulic oil exceeds the temperature range of described the second control curve during controlling curve adjustment radiator rotating speed according to described second, according to the temperature T of this hydraulic oil, in described closed loop region, redefine the second control curve, and according to described the second control curve adjustment radiator rotating speed redefining.
16. methods according to claim 11, wherein said engineering machinery also comprises for driving the motor of described oil hydraulic pump and for regulating the proportional electromagnetic valve of the aperture of described oil hydraulic pump, and the rotating speed of described radiator rotating speed based on described motor and the control electric current of described proportional electromagnetic valve, it is characterized in that, described method also comprises reception engine speed; And comprise according to the first determined control curve or the second control curve adjustment radiator rotating speed:
According to determined the first control curve or second, control curve and determine the radiator theoretical rotational speed corresponding with received temperature T;
According to described theoretical rotational speed and received engine speed, determine described control electric current;
According to determined control electric current, regulate described proportional electromagnetic valve, to regulate described radiator rotating speed.
17. methods according to claim 11, it is characterized in that, described a plurality of predetermined temperature is respectively described the first predetermined temperature t1, the 3rd predetermined temperature t3, the 4th predetermined temperature t4 and described the 6th predetermined temperature t6, corresponding radiator rotating speed is respectively described minimum speed Nmin, the second rotational speed N 2, the first rotational speed N 1 and described maximum speed Nmax, and described closed loop region is for take the quadrilateral that b, h, c, j be summit, wherein the coordinate of b, h, c, j is respectively (t1, Nmin), (t3, N2), (t4, N1), (t6, Nmax).
18. methods according to claim 11, is characterized in that, the method also comprises:
Receive the aperture signal of described oil hydraulic pump; And
According to the aperture of described oil hydraulic pump, carry out auxiliary adjustment radiator rotating speed.
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