CN103216304A - Engineering machine cooling fan controller and control method thereof - Google Patents

Engineering machine cooling fan controller and control method thereof Download PDF

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Publication number
CN103216304A
CN103216304A CN2013101498240A CN201310149824A CN103216304A CN 103216304 A CN103216304 A CN 103216304A CN 2013101498240 A CN2013101498240 A CN 2013101498240A CN 201310149824 A CN201310149824 A CN 201310149824A CN 103216304 A CN103216304 A CN 103216304A
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temperature
cooling fan
control system
optimum performance
temperature sensor
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CN103216304B (en
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侯亮
黄锴
郑聪
郭涛
钱尧一
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Xiamen University
Xiamen XGMA Machinery Co Ltd
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Xiamen University
Xiamen XGMA Machinery Co Ltd
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Abstract

The invention discloses an engineering machine cooling fan controller and a control method thereof. The engineering machine cooling fan controller comprises a control system, an intercooler outlet air temperature sensor, a hydraulic oil radiator outlet temperature sensor, a cooling water radiator outlet temperature sensor, a bivariant oil radiator outlet temperature sensor and a fan driving system. Ti, Th, Tri and Tt are acquired through the temperature sensors and then compared with an optimum performance upper temperature limit value; if none of the Ti, the Th, the Tri and the Tt exceeds the optimum performance upper temperature limit value, the minimum value in N1, N2, N3 and N4 is adopted as a target rotation speed; and if one of the Ti, the Th, the Tri and the Tt exceeds the optimum performance upper temperature limit value, the maximum value in the N1, the N2, the N3 and the N4 is adopted as the target rotation speed. According to the engineering machine cooling fan controller and the control method thereof, cooling capacity is greatly guaranteed, fluid temperatures of all the systems are limited within an optimum performance temperature interval as far as possible, the systems can work with the optimum performance, unnecessary rotation of a cooling fan is reduced, machine noise produced by the cooling fan is lowered, and oil consumption is reduced at the same time.

Description

A kind of engineering machinery cooling fan controller and controlling method
Technical field
The present invention relates to such as engineering machinery field such as loader, loader-diggers, relate to a kind of engineering machinery cooling fan controller and controlling method in particular, when being used for intercooler, cooling water radiator, hydraulic oil radiator and gearbox torque-converters radiator cooled off, adjust speed of cooling fan, reach and guarantee systematic function, suppress noise and improve the effect of oil consumption.
Background technique
Engineering machinery, for example loader-digger is by the motion of hydraulic actuator Control work devices such as oil hydraulic cylinder or oil hydraulic motor on the one hand, transmits kinetic energy by fluid power executive components such as gearbox torque-converters on the other hand, with the power output of Control Engineering machinery.Usually, in this engineering machinery,, generally be to realize by the cooling fan generation cooling air that driving is arranged in the engine compartment for motor is cooled off.
Cooling fan relies on engine crankshaft power mostly, and cooling air flows into from the air inlet grid, cools off various heat exchangers, and then discharges from exhaust port.In the heat exchanger, pair intercooler that turbosupercharger pressurized air cools off is arranged, the hot gas that spreads that pair engine cooling water cools off is arranged, the oil cooler that working oil is cooled off in pair fluid pressure drive device is arranged, also have the oil cooler that working oil in the hydraulic drive is cooled off.
But traditional engineering machinery adopts the straight ejector half cooling fan of motor, and speed of cooling fan and engine speed are proportional.Therefore, cooling water in the radiator, working oil in the hydraulic oil radiator, dispel the heat easily deficiency or supercooling of working oil in two change radiators, the not obvious reduction engine power of middle device for cooling radiating effect.
Therefore, independent cooling system is suggested, promptly this system has: cooling fan, the cooling fan that radiator is forced to cool off drive the oil hydraulic motor of usefulness, controlled cooling fan with the variable capacity type oil hydraulic pump of oil hydraulic motor rotating speed, detect the sensor of each cooling liquid or working oil temperature and the engine rotation speed sensor of detection of engine rotating speed, by the testing signal of input from these sensors, signal according to each sensor, calculate by controller, control cooling fan rotation speed again.
In the Chinese invention patent application number is 200780009604.0 patent, proposes to control rotation speed of the fan, thereby realize a kind of control strategy with gentle oil temperature of oil and outside air temperature difference.In the Chinese invention patent application number is 200580029803.9 patent, propose to control the cooling fan optimum speed by parameters such as intercooler temperature, the gentle cooling water water temperatures of hydraulic oil radiator oil.
In recent years, engineering machinery noise limitation standard increasingly stringent in traditional cooling system, only relies on the sound insulation means are improved to exist limitation, is difficult to satisfy the standard of noise restriction.
From existing patented technology, cooling fan rotation speed relies on the independent cooling system of parameter controls such as coolant water temperature, hydraulic oil temperature and intercooler temperature to occur, but to the not clearly record of gearbox torque-converters oil temperature control strategy.Cooling system cooling fan rotation speed control strategy is often set according to the maximum value of each radiator reckoning rotating speed, and it the excessive situation of local radiator cooling air can occur, and it has not only influenced overall performance, and also increases greatly aspect power consumption and noise.
Summary of the invention
Main purpose of the present invention is to provide a kind of engineering machinery cooling fan controller, can't take into account the problem of performance, power consumption and noise to solve prior art, promptly reach when guaranteeing the required cooling air quantity of each radiator, also as far as possible each system temperature is adjusted to the optimum performance temperature range, and reduces cooling fan noise and power consumption.
In order to reach above-mentioned purpose, solution of the present invention is:
A kind of engineering machinery cooling fan controller, wherein, the intercooler outlet air temperature sensor that comprises control system and all link to each other with control system, hydraulic oil radiator outlet temperature sensor, cooling water radiator outlet temperature sensor, two change oil radiator outlet temperature sensor and fan drive system, this control system obtains intercooler outlet air temperature T respectively based on the sensing signal of each temperature transducer i, hydraulic oil cooler exports oily temperature T h, cooling water radiator inlet coolant water temperature T RiAnd two change oil radiators export oily temperature T t, extrapolate corresponding required cooling fan rotation speed N respectively based on the said temperature value again 1, N 2, N 3And N 4, this control system all is provided with optimum performance temperature range CLV ceiling limit value to each radiator fluid, and compares T respectively i, T h, T Ri, T tWhether surpass its optimum performance temperature upper limit T Ipmax, T Hpmax, T Ripmax, T TpmaxIf T i, T h, T Ri, T tAll there is not its optimum performance temperature upper limit T of surpassing Ipmax, T Hpmax, T Ripmax, T Tpmax, then select cooling fan rotation speed reckoning value N 1, N 2, N 3, N 4In the pairing control signal of minimum value be delivered to fan drive system; If T i, T h, T Ri, T tExist one or more values to surpass its optimum performance temperature upper limit T Ipmax, T Hpmax, T Ripmax, T Tpmax, then select cooling fan rotation speed reckoning value N 1, N 2, N 3, N 4In the pairing control signal of maximum value be delivered to fan drive system.
Another object of the present invention is to provide a kind of engineering machinery cooling fan control method, wherein, comprise the steps:
Step 101: intercooler outlet air temperature sensor sensing air temperature T i, control system receives temperature signal, calculates cooling fan rotation speed N 1, execution in step 102 then;
Step 102: hydraulic oil radiator outlet temperature sensor induction hydraulic fluid temperature T h, control system receives temperature signal, calculates cooling fan rotation speed N 2, execution in step 103 then;
Step 103: cooling water radiator outlet temperature sensor induction cooling water temperature T Ri, control system receives temperature signal, calculates cooling fan rotation speed N 3, execution in step 104 then;
Step 104: the two oil temperature T that become of two change oil radiator outlet temperature sensor inductions t, control system receives temperature signal, calculates cooling fan rotation speed N 4, execution in step 105 then;
Step 105: control system compares T more respectively i, T h, T Ri, T tWhether surpass its optimum performance temperature upper limit T Ipmax, T Hpmax, T Ripmax, T TpmaxIf, T i, T h, T Ri, T tIn one surpass its corresponding optimum performance temperature upper limit T Ipmax, T Hpmax, T Ripmax, T Tpmax, then execution in step 106, if there is no then carry out 107;
Step 106: control system selects cooling fan to calculate tachometer value N 1, N 2, N 3, N 4In maximum value as rotating speed of target, execution in step 108 then;
Step 107: control system selects cooling fan to calculate tachometer value N 1, N 2, N 3, N 4In minimum value as rotating speed of target, execution in step 108 then; Step 108: the control signal that control system output is corresponding with rotating speed of target.
After adopting said structure, the present invention is when the control cooling fan rotation speed, 4 kinds of fluid temperature (F.T.) values have been used as a reference, because each radiator inner fluid temperature speed functions all is a linearity curve, so calculate cooling fan rotation speed according to radiator inner fluid temperature, can realize accurately and best controlling cooling fan rotation speed.
The present invention judges that relatively interstage cooler outlet air temperature, hydraulic oil cooler outlet oil temperature, cooling water radiator inlet coolant water temperature, two change oil radiator export oily temperature and whether surpass its optimum performance temperature upper limit; If surpass, then select for use and calculate the rotating speed of target of rotating speed maximum value as cooling fan, allow its temperature descend, get back to the optimum performance temperature range as early as possible; If do not surpass, then select for use and calculate the rotating speed of target of rotating speed minimum value as cooling fan, allow not in the fluid temperature (F.T.) rising of optimum performance temperature range, reach the optimum performance temperature range as early as possible.
Therefore, the present invention when fully guaranteeing cooling capacity, as much as possible with each system fluid temperature restraint in the optimum performance temperature range, guarantee that each system works under optimum performance; Reduce the unnecessary rotation of cooling fan, not only reduced the machine noise that cooling fan produces, also reduced oil consumption simultaneously.
Description of drawings
Fig. 1 is the theory diagram that the present invention relates to a kind of engineering machinery cooling fan controller.
Fig. 2 is the flow chart that the present invention relates to a kind of engineering machinery cooling fan control method;
Fig. 3 is for the present invention relates to intercooler fluid temperature (F.T.) and cooling fan rotating speed of target relation function in the controller.
Fig. 4 is for the present invention relates to cooling water radiator fluid temperature (F.T.) and cooling fan rotating speed of target relation function in the controller.
Fig. 5 is for the present invention relates to two change oil radiator fluid temperature (F.T.)s and cooling fan rotating speed of target relation function in the controller.
Fig. 6 is for the present invention relates to hydraulic oil radiator fluid temperature (F.T.) and cooling fan rotating speed of target relation function in the controller.
Among the figure:
Intercooler outlet air temperature sensor 11
Hydraulic oil radiator outlet temperature sensor 12
Cooling water radiator outlet temperature sensor 13
Two change oil radiator outlet temperature sensors 14
Control system 2 fan drive systems 3
Fan 4.
Embodiment
In order further to explain technological scheme of the present invention, the present invention will be described in detail below by specific embodiment.
As shown in Figure 1, a kind of engineering machinery cooling fan controller that the present invention relates to, the intercooler outlet air temperature sensor 11 that comprises control system 2 and all link to each other with control system 2, hydraulic oil radiator outlet temperature sensor 12, cooling water radiator outlet temperature sensor 13, two change oil radiator outlet temperature sensor 14 and fan drive system 3, this fan drive system 3 link to each other with fan 4 and rotate with drive fan 4.
This control system 2 obtains intercooler outlet air temperature T respectively based on the sensing signal of each temperature transducer i, hydraulic oil cooler exports oily temperature T h, cooling water radiator inlet coolant water temperature T RiAnd two change oil radiators export oily temperature T t, extrapolate corresponding required cooling fan rotation speed N respectively based on the said temperature value again 1, N 2, N 3And N 4
This control system 2 all is provided with optimum performance temperature range CLV ceiling limit value to each radiator fluid, and compares T respectively i, T h, T Ri, T tWhether surpass its optimum performance temperature upper limit T Ipmax, T Hpmax, T Ripmax, T TpmaxIf T i, T h, T Ri, T tAll there is not its optimum performance temperature upper limit T of surpassing Ipmax, T Hpmax, T Ripmax, T Tpmax, then select cooling fan rotation speed reckoning value N 1, N 2, N 3, N 4In the pairing control signal of minimum value be delivered to fan drive system 3; If T i, T h, T Ri, T tExist one or more values to surpass its optimum performance temperature upper limit T Ipmax, T Hpmax, T Ripmax, T Tpmax, then select cooling fan rotation speed reckoning value N 1, N 2, N 3, N 4In the pairing control signal of maximum value be delivered to fan drive system 3.
As shown in Figure 2, the present invention also provides a kind of engineering machinery cooling fan control method, comprises the steps:
Step 101: intercooler outlet air temperature sensor 11 Induction Air Temperature T i, control system 2 receives temperature signal, calculates cooling fan rotation speed N 1, execution in step 102 then;
Step 102: hydraulic oil radiator outlet temperature sensor 12 induction hydraulic fluid temperature T h, control system 2 receives temperature signal, calculates cooling fan rotation speed N 2, execution in step 103 then;
Step 103: cooling water radiator outlet temperature sensor 13 induction cooling water temperature T Ri, control system 2 receives temperature signal, calculates cooling fan rotation speed N 3, execution in step 104 then;
Step 104: the two oil temperature T that become of two change oil radiator outlet temperature sensor 14 inductions t, control system 2 receives temperature signal, calculates cooling fan rotation speed N 4, execution in step 105 then;
Step 105: control system 2 compares T more respectively i, T h, T Ri, T tWhether surpass its optimum performance temperature upper limit T Ipmax, T Hpmax, T Ripmax, T TpmaxIf, T i, T h, T Ri, T tIn one surpass its corresponding optimum performance temperature upper limit T Ipmax, T Hpmax, T Ripmax, T Tpmax, then execution in step 106, if there is no then carry out 107;
Step 106: control system 2 selects cooling fan to calculate tachometer value N 1, N 2, N 3, N 4In maximum value as rotating speed of target, execution in step 108 then;
Step 107: control system 2 selects cooling fan to calculate tachometer value N 1, N 2, N 3, N 4In minimum value as rotating speed of target, execution in step 108 then;
Step 108: the control system 2 outputs control signal corresponding with rotating speed of target.
As shown in Figure 3, it shows the function relation figure of intercooler outlet temperature and fan rotating speed of target, when temperature is lower than T IaThe time, the fan rotating speed of target is N MinSteady state value is when temperature is higher than T IbThe time, the fan rotating speed of target is N MaxSteady state value; At T IaAnd T IbBetween, have an optimum performance temperature range, on be limited to T Ipmax, be limited to T down Ipmin, corresponding cooling fan rotating speed of target is respectively N Pmax, N Pmin
As shown in Figure 4, it shows the function relation figure of cooling water radiator inlet temperature and fan rotating speed of target, when temperature is lower than T RiaThe time, the fan rotating speed of target is N MinSteady state value is when temperature is higher than T RibThe time, the fan rotating speed of target is N MaxSteady state value; At T RiaAnd T RibBetween, have an optimum performance temperature range, on be limited to T Ripmax, be limited to T down Ripmin, corresponding cooling fan rotating speed of target is respectively N Pmax, N Pmin
As shown in Figure 5, it shows the function relation figure of two change oil radiator outlet temperatures and fan rotating speed of target, when temperature is lower than T TaThe time, the fan rotating speed of target is N MinSteady state value is when temperature is higher than T TbThe time, the fan rotating speed of target is N MaxSteady state value; At T TaAnd T TbBetween, have an optimum performance temperature range, on be limited to T Tpmax, be limited to T down Tpmin, corresponding cooling fan rotating speed of target is respectively N Pmax, N Pmin
As shown in Figure 6, it shows the function relation figure of hydraulic oil radiator outlet temperature and fan rotating speed of target, when temperature is lower than T HaThe time, the fan rotating speed of target is N MinSteady state value is when temperature is higher than T HbThe time, the fan rotating speed of target is N MaxSteady state value; At T HaAnd T HbBetween, have an optimum performance temperature range, on be limited to T Hpmax, be limited to T down Hpmin, corresponding cooling fan rotating speed of target is respectively N Pmax, N Pmin
Like this, the present invention judges that relatively interstage cooler outlet air temperature, hydraulic oil cooler outlet oil temperature, cooling water radiator inlet coolant water temperature, two change oil radiator export oily temperature and whether surpass its optimum performance temperature upper limit; If surpass, then select for use and calculate the rotating speed of target of rotating speed maximum value as cooling fan, allow its temperature descend, get back to the optimum performance temperature range as early as possible; If do not surpass, then select for use and calculate the rotating speed of target of rotating speed minimum value as cooling fan, allow not in the fluid temperature (F.T.) rising of optimum performance temperature range, reach the optimum performance temperature range as early as possible.
Therefore, the present invention when fully guaranteeing cooling capacity, as much as possible with each system fluid temperature restraint in the optimum performance temperature range, guarantee that each system works under optimum performance; Reduce the unnecessary rotation of cooling fan, not only reduced the machine noise that cooling fan produces, also reduced oil consumption simultaneously.
The foregoing description and graphic and non-limiting product form of the present invention and style, any person of an ordinary skill in the technical field all should be considered as not breaking away from patent category of the present invention to its suitable variation or modification of doing.

Claims (2)

1. engineering machinery cooling fan controller, it is characterized in that, the intercooler outlet air temperature sensor that comprises control system and all link to each other with control system, hydraulic oil radiator outlet temperature sensor, cooling water radiator outlet temperature sensor, two change oil radiator outlet temperature sensor and fan drive system, this control system obtains intercooler outlet air temperature T respectively based on the sensing signal of each temperature transducer i, hydraulic oil cooler exports oily temperature T h, cooling water radiator inlet coolant water temperature T RiAnd two change oil radiators export oily temperature T t, extrapolate corresponding required cooling fan rotation speed N respectively based on the said temperature value again 1, N 2, N 3And N 4, this control system all is provided with optimum performance temperature range CLV ceiling limit value to each radiator fluid, and compares T respectively i, T h, T Ri, T tWhether surpass its optimum performance temperature upper limit T Ipmax, T Hpmax, T Ripmax, T TpmaxIf T i, T h, T Ri, T tAll there is not its optimum performance temperature upper limit T of surpassing Ipmax, T Hpmax, T Ripmax, T Tpmax, then select cooling fan rotation speed reckoning value N 1, N 2, N 3, N 4In the pairing control signal of minimum value be delivered to fan drive system; If T i, T h, T Ri, T tExist one or more values to surpass its optimum performance temperature upper limit T Ipmax, T Hpmax, T Ripmax, T Tpmax, then select cooling fan rotation speed reckoning value N 1, N 2, N 3, N 4In the pairing control signal of maximum value be delivered to fan drive system.
2. an engineering machinery cooling fan control method is characterized in that, comprises the steps:
Step 101: intercooler outlet air temperature sensor sensing air temperature T i, control system receives temperature signal, calculates cooling fan rotation speed N 1, execution in step 102 then;
Step 102: hydraulic oil radiator outlet temperature sensor induction hydraulic fluid temperature T h, control system receives temperature signal, calculates cooling fan rotation speed N 2, execution in step 103 then;
Step 103: cooling water radiator outlet temperature sensor induction cooling water temperature T Ri, control system receives temperature signal, calculates cooling fan rotation speed N 3, execution in step 104 then;
Step 104: the two oil temperature T that become of two change oil radiator outlet temperature sensor inductions t, control system receives temperature signal, calculates cooling fan rotation speed N 4, execution in step 105 then;
Step 105: control system compares T more respectively i, T h, T Ri, T tWhether surpass its optimum performance temperature upper limit T Ipmax, T Hpmax, T Ripmax, T TpmaxIf, T i, T h, T Ri, T tIn one surpass its corresponding optimum performance temperature upper limit T Ipmax, T Hpmax, T Ripmax, T Tpmax, then execution in step 106, if there is no then carry out 107;
Step 106: control system selects cooling fan to calculate tachometer value N 1, N 2, N 3, N 4In maximum value as rotating speed of target, execution in step 108 then;
Step 107: control system selects cooling fan to calculate tachometer value N 1, N 2, N 3, N 4In minimum value as rotating speed of target, execution in step 108 then;
Step 108: the control signal that control system output is corresponding with rotating speed of target.
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Cited By (10)

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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
CN108644001A (en) * 2018-07-13 2018-10-12 安徽合力股份有限公司 A kind of the intelligent heat dissipation system and its heat dissipating method of hydraulic motor driving
CN110762044A (en) * 2019-11-04 2020-02-07 北京丰凯换热器有限责任公司 Method for estimating target rotating speed of fan of independent heat dissipation system
CN112196821A (en) * 2020-09-30 2021-01-08 江苏徐工工程机械研究院有限公司 Heat dissipation and noise cooperative matching device, optimization method and system
CN112228204A (en) * 2020-10-29 2021-01-15 四川邦立重机有限责任公司 Self-adaptive independent cooling method and system for material grabbing machine and excavator
CN113914990A (en) * 2021-09-28 2022-01-11 三一重机有限公司 Engine thermal management control method and system and working machine
CN113931250A (en) * 2021-10-21 2022-01-14 徐州徐工挖掘机械有限公司 Excavator, hydraulic oil cooling fan control method and device thereof, and storage medium
CN114893286A (en) * 2022-05-16 2022-08-12 雷沃工程机械集团有限公司 Loader dual-medium intelligent temperature control system
CN114908835A (en) * 2022-04-29 2022-08-16 徐州徐工挖掘机械有限公司 Control method for cooperation of multiple groups of electronic fans for heat dissipation and excavator
CN115163275A (en) * 2022-08-16 2022-10-11 雷沃工程机械集团有限公司 Radiator fan control system and control method

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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
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CN110762044B (en) * 2019-11-04 2021-03-30 北京丰凯换热器有限责任公司 Method for estimating target rotating speed of fan of independent heat dissipation system
CN110762044A (en) * 2019-11-04 2020-02-07 北京丰凯换热器有限责任公司 Method for estimating target rotating speed of fan of independent heat dissipation system
CN112196821A (en) * 2020-09-30 2021-01-08 江苏徐工工程机械研究院有限公司 Heat dissipation and noise cooperative matching device, optimization method and system
CN112228204A (en) * 2020-10-29 2021-01-15 四川邦立重机有限责任公司 Self-adaptive independent cooling method and system for material grabbing machine and excavator
CN113914990A (en) * 2021-09-28 2022-01-11 三一重机有限公司 Engine thermal management control method and system and working machine
CN113931250A (en) * 2021-10-21 2022-01-14 徐州徐工挖掘机械有限公司 Excavator, hydraulic oil cooling fan control method and device thereof, and storage medium
CN114908835A (en) * 2022-04-29 2022-08-16 徐州徐工挖掘机械有限公司 Control method for cooperation of multiple groups of electronic fans for heat dissipation and excavator
CN114893286A (en) * 2022-05-16 2022-08-12 雷沃工程机械集团有限公司 Loader dual-medium intelligent temperature control system
CN115163275A (en) * 2022-08-16 2022-10-11 雷沃工程机械集团有限公司 Radiator fan control system and control method

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