WO2005024199A1 - ファン回転速度制御方法 - Google Patents
ファン回転速度制御方法 Download PDFInfo
- Publication number
- WO2005024199A1 WO2005024199A1 PCT/JP2004/003677 JP2004003677W WO2005024199A1 WO 2005024199 A1 WO2005024199 A1 WO 2005024199A1 JP 2004003677 W JP2004003677 W JP 2004003677W WO 2005024199 A1 WO2005024199 A1 WO 2005024199A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fan
- rotation speed
- pump
- motor
- temperature
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000012530 fluid Substances 0.000 claims abstract description 36
- 239000012809 cooling fluid Substances 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims description 32
- 230000007704 transition Effects 0.000 abstract description 2
- 230000002459 sustained effect Effects 0.000 abstract 1
- 239000010720 hydraulic oil Substances 0.000 description 28
- 238000001514 detection method Methods 0.000 description 25
- 239000002826 coolant Substances 0.000 description 19
- 238000006243 chemical reaction Methods 0.000 description 13
- 239000003921 oil Substances 0.000 description 12
- 239000003570 air Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000020169 heat generation Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
- F01P7/04—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
- F01P5/04—Pump-driving arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
- F01P7/04—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio
- F01P7/044—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio using hydraulic drives
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Definitions
- the present invention relates to a fan rotation speed control method for controlling a fan rotation speed of a cooling fan for cooling a fluid to be cooled.
- rotational speed The number of rotations in the immediate vicinity is simply called "rotational speed”.
- the pump-motor system which operates the fan motor by the hydraulic oil supplied from the fan pump force driven by the engine.
- a temperature detection sensor is provided in the fan rotation speed control method for controlling the fan rotation speed of the cooling fan rotated by the fan motor. To detect the temperature of the fluid to be cooled, and determine the fan target rotation speed of the cooling fan that cools the fluid to be cooled according to the detected temperature of the fluid to be cooled.
- a fan speed control method for example, see Patent Publication No. 3295650).
- the fan rotation speed control method disclosed in Japanese Patent No. 3295650 is characterized by a method of determining a fan target rotation speed. Once the target rotation speed is determined, as shown in the middle part of FIG.
- the control signal corresponding to the target rotation speed or the maximum rotation speed of the fan i.e., the pump capacity command current is changed by the fan pump.
- a step is input to an electro-hydraulic conversion valve such as an electromagnetic ratio valve that controls the capacity variable means.
- the indicated value of the target rotation speed of the fan can be specified from the minimum rotation speed to the maximum rotation speed of the fan.
- the target rotation speed of the fan is determined by the target temperature, so that the rotation speed is determined by the fan speed.
- the minimum rotation speed (300 rpm for the first row) and the maximum rotation speed (873 rpm for the first row) are indicated, and the temperature detection sensor If the target rotation speed of the fan is indicated by, for example, 873 rpm based on the detected temperature information, the minimum rotation speed of the fan at the first start-up is the minimum rotation speed of the fan.
- the power instantaneously changes from 300 rpm to 873 rpm in a step-like manner.
- the middle part of Fig. 7 shows an example in which the capacity command current value of the fan pump is input in step.
- the control signal corresponding to the fan target rotation speed or the maximum rotation speed is input by the step input.
- the pump motor of the fan motor and the pump motor system of the fan motor have a large load. Peak pressure or pressure notching occurs in the motor system, which may cause damage.
- the present invention has been made in view of such a point, and operates the fan motor by the working fluid supplied from the fan pump card.
- the fan rotation speed control method for controlling the fan rotation speed of the cooling fan by controlling the pump motor system the pump motor
- An object of the present invention is to provide a fan rotation speed control method capable of preventing generation of peak pressure and pressure hunting which may lead to system damage. It is. Disclosure of the invention
- the fan rotation speed control method is based on the operating fluid supplied from the pump pump driven by the engine.
- the fan of the cooling fan that controls the pump-motor system that operates the motor and is rotated by the fan motor to cool the fluid to be cooled.
- This method controls the number of revolutions, detects the temperature of the fluid to be cooled, and cools the fluid to be cooled in accordance with the detected temperature of the fluid to be cooled.
- Control the pump-motor system so that the fan rotation speed is gradually increased from the fan minimum rotation speed to the fan rotation speed. It is a way to control the pump-motor system in such a way as to make it work.
- the fan rotation speed starts from the fan minimum rotation speed and gradually increases to the fan target rotation speed B.
- the fan determined according to the detected temperature of the fluid to be cooled when the engine is started. It is possible to prevent the control signal corresponding to the target number of revolutions from being input to the pump / motor system by step input.
- the load acting on the fan motor can be reduced, and peak pressure can be prevented from being generated between the fan pump and the fan motor.
- the pump discharge pressure of the fan pump that is, the difference between the motor inlet pressure and the motor outlet pressure of the fan motor. Pressure hunting can be prevented from occurring, and the fan motor can be prevented from being damaged, and fan speed rotation can be prevented. Can be prevented.
- the fan rotation speed control method according to the present invention is characterized in that, in the fan rotation speed control method described above, the fan minimum rotation speed when the engine is started is fixed. This is a method of maintaining the engine time, and the engine load fluctuation is maintained by maintaining the minimum fan speed at the start of the engine for a certain period of time. Evasion, The power S can be used to stabilize the engine speed at the time of engine start.
- FIG. 1 is a flowchart illustrating an embodiment of a fan rotation speed control method according to the present invention
- FIG. 2 is a graph illustrating an increase in rotation speed of the control method according to the first embodiment
- FIG. 3 is a graph showing changes in pressure, current, and rotation speed in the control method according to the first embodiment
- FIG. 4 is a graph showing changes in the control method according to the first embodiment.
- Fig. 5 is a block diagram of the fan rotation speed control device. Fig. 5 controls the fan rotation speed according to the detected temperature of the fluid to be cooled by the controller of the control device.
- FIG. 6 is a block diagram showing the overall algorithm
- FIG. 6 is a block diagram showing the configuration of the PI controller in the controller.
- Fig. 7 is a graph showing the changes in pressure, current and rotation speed in the conventional fan rotation speed control method. It is. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 A first embodiment shown in FIGS. 1 to 6.
- Fig. 4 shows an outline of the fan rotation speed control device, and the engine 11 mounted on the vehicle of the construction machine such as a hydraulic shovel performs the work of pumping and supplying hydraulic oil.
- the main pumps 12 and 13 are driven together.
- the hydraulic shovel is mounted on a lower traveling body equipped with a traveling system such as a crawler belt so that the upper rotating body can be pivoted via a rotating system.
- the working body is installed in the torsion.
- This work machine system is equipped with a boom, an arm bucket and a hydraulic cylinder that operates them.
- the main pump 12 is provided with a hydraulic motor for a traveling system, a hydraulic motor for a rotating system, a hydraulic cylinder for a working machine, etc., which are mounted on the above-mentioned vehicle. Supply hydraulic oil as a working fluid to various hydraulic actuators.
- the pump 13 for the fan is a fan for operating the motor 15 for the fan by using the working oil discharged as the working fluid to the pipe 14.
- the motor 15 is provided with a cooling fan 17 on its rotating shaft 16 as a unit, and a fan pump 13 for rotating the cooling fan 17.
- the pump discharge flow rate of the fan pump 13 is variably controlled by the hydraulic pressure signal thus obtained, and the rotation speed of the fan motor 15 is variably controlled. It is a variable capacity pump that can be used.
- a variable-capacity fan pump 13 whose capacity is variable-controlled by the electro-hydraulic conversion valve 18, through the piping 14 to the fan motor 15 through the piping 14
- the hydraulic pressure circuit reaching the fan motor 15 depends on the hydraulic oil flow supplied from the fan pump 13.
- the pump / motor system 19 controls the rotation speed of the motor.
- the air cooler 21 has an intake air pipe 24, the oil cooler 22 has a hydraulic oil pipe 25, and the radiator 23 has a coolant pipe.
- Each of the pipes 26 is provided.
- An intake air temperature detection sensor 27 that detects the temperature of the intake air as the fluid to be cooled is installed in the intake air pipe 24.
- the oil pipe 25 has a hydraulic oil temperature detection sensor 28 for detecting the temperature of the hydraulic oil in the hydraulic circuit as a cooled fluid, and the coolant pipe 26 has a cooled oil flow.
- Coolant temperature detection sensors 29 for detecting the temperature of coolant (cooling water) as a body are provided respectively, and these temperature detection sensors are provided.
- the output sensors 27, 28, and 29 are connected to the signal input section of the controller 34 via the respective input signal lines 31, 32, and 33.
- a signal output section of the controller 34 is connected to a signal input section of the electro-hydraulic conversion valve 18 via an output signal line 35.
- the controller 34 performs an arithmetic operation on the temperature information signals detected by the various temperature detection sensors 27, 28, 29, and performs the arithmetic processing on the temperature information signals.
- the output signal from the roller 34 is used to control the pump discharge flow of the fan pump 13 via the oil / oil conversion valve 18 so as to be variable.
- Fan motor 15 The number of rotations is controlled variably, and the cooling of the intake air, hydraulic oil and coolant detected by the temperature detection sensors 27, 28, 29
- the fan rotation speed of the cooling fan 17 is variably controlled so that the detected temperature of the fluid reaches the preset target temperature, and each cooling fluid is overheated. Cool properly to prevent cooling.
- the controller 34 operates the fan so that the detection temperature of the cooled fluid to be cooled by the cooling fan 17 becomes the target temperature.
- the main pump 12 comes out indirectly. It also has the ability to increase power.
- the hydraulic oil discharged from the fan pump 13 driven by the engine 11 together with the main pump 12 is used for the fan.
- the motor 15 is actuated and the cooling fan 17 is rotated by the fan motor 15, the force S, and the controller 34 is connected to the cooling fan 17.
- the fan pump 13 By controlling the fan pump 13 so as to lower the fan rotation speed of the fan, the fan pump 13 and the fan mode are controlled. It is also possible to lower the fan drive horsepower consumed by the motor 15 and to increase the output of the main pump 12 accordingly.
- the controller 34 determines the fan target rotation speed according to the detected temperature of each of the cooled bodies as shown in FIG. It has an algorithm.
- the preset Air target temperature T ti, Intake air temperature detected by the sensor 27, and the air temperature T mi, which is detected by the sensor 27, are preset.
- Hydraulic oil target temperature Tt0, Hydraulic oil temperature detection sensor Tmo detected by hydraulic oil temperature sensor 28, Coolant target temperature T set in advance tc and the coolant detection temperature T mc detected by the coolant temperature detection sensor 29 are output from the respective proportional integration controllers ( Hereinafter, these proportional integration controllers are input to the “PI controllers 37 38, 39”.
- These PI controllers 37, 38, and 39 control the amount of heat and ambient temperature of each fluid to be cooled, including the intake manifold, hydraulic oil, and coolant.
- the target rotation speeds of a plurality of fans set correspondingly are determined for each fluid to be cooled, and these PI controllers 37, 38, and 39 are used.
- Each signal of the target rotation speed Ntc has an upper limit and a lower limit set by the limiters 42, 43, and 44 having saturation characteristics, respectively.
- the fan target rotation number Ntc 'for the coolant is input to the total target rotation number determiner 45, and the total target rotation number determiner 45 is provided.
- the number of rotations of one or more fans is N ti ', N to', and N tc '
- the target rotation speed N tt is calculated and determined.
- the total target rotational speed determiner 45 squares the fan target rotational speeds N ti, N to 'N tc, of each of the cooled fluids, These are calculated and the square root thereof is obtained to calculate the total target rotation number N tt. That is,
- N tt ⁇ (Fan target rotation speed of fluid n to be cooled)
- N tt ⁇ (N ti ') 2 + (N to') 2 + (N tc ') 2 ⁇ 1/2 and that Do.
- the total target number of revolutions N is passed through a limiter 46 that sets a lower limit and an upper limit in accordance with the saturation characteristics, and then reaches the final fan target number of revolutions. It becomes the number N tf.
- FIG. 6 shows the detailed force S of the PI controller 38 with respect to the hydraulic oil temperature.
- the hydraulic oil target temperature T10 and the hydraulic oil detection temperature Tmo are led to a comparator 51 for calculating their errors.
- a comparator 51 for calculating their errors.
- the error signal output from the comparator 51 is multiplied by the gain 52, a lower limit and an upper limit are set for the limiter having a saturation characteristic.
- the signal value limited by 53 is multiplied by the gain signal by the gain signal 54, integrated by an integrator 55, and further processed by a limiter 56.
- the signal value subjected to the restriction processing and the expected fan rotation speed N ef are subjected to power calculation by the power P calculator 57, whereby the hydraulic oil Fan target rotation speed N to is determined.
- the target air temperature T ti and the ink air detection temperature T mi are processed by the PI controller 37, and the -The fan target rotation speed N ti for the coolant is determined, and the coolant target temperature T tc and the coolant detection temperature T mc are PI controlled. After being processed by the controller 39, the target fan rotation number Ntc for the coolant is determined.
- the controller 34 is operated by the fan pump 13 driven by the engine 11 and supplied with the operating oil by the hydraulic oil supplied from the pump 13.
- the pump-motor system 19 that operates the pump 15 controls the electro-hydraulic conversion valve 18 so that the cooling fan 17 is rotated by the fan motor 15. It controls the rotation speed of the fan, and detects the intake air, hydraulic oil, and coolant detected by the temperature detection sensors 27, 28, and 29.
- the fan target rotation speed Ntf of the cooling fan 17 is determined according to the detection temperature of each cooled fluid in the lamp, but this fan target rotation is determined. Instead of outputting the number N tf at the same time as the engine start, control is performed so that the fan reaches the target rotation speed N tf by exercising time. That.
- the controller 34 controls the rotation speed of the engine when the engine is started.
- the pump is controlled to start from the fan minimum rotation speed N min.
- the motor oil control valve 18 of the motor system 19 is controlled (step 1), and the fan Low rotation speed N min 2 Hold for at least a few seconds (Step 2), and after at least a few seconds, gradually increase the fan speed from the minimum fan speed N min (Step 3) At least a few seconds after entering the increase control, the pump is switched to the fan target rotation speed Ntf.
- the electro-hydraulic conversion valve 18 of the motor system 19 is controlled (Step 4).
- the control port 34 has a fan rotation speed N as the fan rotation speed when the engine is started. min at engine start or for a fixed period of time T 1, for example 10 seconds, and for a set period of time T 2, for example 10 seconds Then, the fan rotation speed is gradually increased from the minimum fan rotation speed N min at a constant gradient to reach the fan target rotation speed N tf.
- Tl, ⁇ 2 may be fixed times, but can be easily adjusted by changing the setting on the software. .
- the temperature of the engine 11's intake air, hydraulic oil and coolant (cooling water) is measured by a temperature detection sensor.
- one total target rotation speed N11 is determined by the total target rotation speed determiner 45.
- Total target rotation speed N 11 ⁇ (Fan target rotation speed of cooling target fluid n) 2 ⁇ 1/2
- the fan target rotational speed N tf is finally determined from the total target rotational speed N tt via the limiter 46.
- the controller 34 drives the electro-hydraulic conversion valve 18 such as an electromagnetic proportional valve to control the pump discharge amount of the fan pump 13 so that The motor speed of the fan motor 15 is controlled, and the fan speed of the cooling fan 17 is controlled to the fan minimum speed Nmin.
- the minimum fan speed N min is at least It is controlled so as to be maintained for a second, for example, 10 seconds, so that the load on the fan pump 13 and the fan motor 15 is unloaded. Reduce it.
- the time at which this fan minimum rotation speed is maintained at N min may be fixed at a fixed time, but it can be easily changed by changing the setting on the software. It can be changed.
- the speed of the fan is controlled so as to shift to the target rotation speed Ntf.
- the transition time to the target rotation speed N tf of this fan may be fixed to a fixed time, but depending on the setting change on the software. It can be easily changed.
- the command current value output from the controller 34 to the electro-hydraulic conversion valve 18 is set so that the fan target rotation speed Ntf is obtained.
- the pump discharge amount of the fan pump 13 is gradually increased to increase the pump discharge amount, and the motor rotation speed of the fan motor 15 is controlled to increase the speed.
- the fan rotation speed of the cooling fan 17 is controlled to the target rotation speed N tf.
- the antennas and operation detected by the temperature detection sensors 27, 28, and 29 are as shown in Fig. 6.
- Cooling fluids for oil and coolant Based on the temperature information of 5, the PI controllers 37, 38, 39, including the comparator 51, etc., are so arranged that the detected temperature of each cooled body reaches the target temperature.
- the fan rotation speed of the cooling fan 17 is controlled by the fan target rotation speed N tf obtained through the limiter 46 and the like.
- the fan target rotation speed Ntf is increased, so that a stronger cooling effect can be obtained, usually or periodically.
- the temperature information detected by the temperature detection sensors 27, 28, and 29 is fed back to the fan rotation speed, and the rotation speed sensor is used. Instead, the number of fan rotations can be controlled.
- the PI controllers 37, 38 are made to have a higher fan speed.
- the cooling fan 17 will be set so that the detection temperature will be S60 ° C.
- the fan rotation speed starts to increase. If the amount of heat generation is small, the operating oil temperature will return to 60 ° C even with a slight increase in fan speed, but if the amount of heat generation is large, If a slight increase in fan rotation speed 6
- the hydraulic oil temperature continues to rise, and the fan speed also rises at the same time. Eventually, when the fan rotation speed becomes sufficiently high, the hydraulic oil temperature starts to decrease, and when the target temperature is reached, the fan rotation speed stops increasing.
- the cooling fan 17 similarly increases the high fan speed. It becomes.
- the value to set the fan rotation speed in accordance with the heat value of each fluid to be cooled and the ambient temperature is different.
- the temperature is determined for each temperature.
- the control is performed without having a map of rotation speed.
- this fan rotation speed control method is based on
- the fan target rotation speed N tf calculated by the algorithm shown in Figs. 5 and 6, Fig. 1 and Fig. 2
- the fan is kept at the minimum fan speed N min for a fixed time T1 (for example, 10 seconds) after the engine is started.
- T1 for example, 10 seconds
- T2 for example, 10 seconds
- the fan rotation speed control is started from the rotation speed N rain, and the fan minimum rotation speed N min is maintained for at least a few seconds.
- the load on the pump 13 and the fan motor 15 can be reduced, and the minimum fan speed N min when the engine is started can be maintained for a certain period of time.
- the engine load can be prevented from fluctuating, and the engine speed at the time of engine start can be stabilized at an early stage.
- the electro-hydraulic conversion valve 18 of the pump's motor system 19 is By supplying a pump capacity command current that changes gradually with time, the fan rotation speed from the minimum rotation speed N min to the fan target rotation speed N tf is supplied. At the start of the engine, the fan speed is gradually changed by applying force for at least several seconds so as to gradually increase the fan speed. Then, the control signal corresponding to the fan target rotation speed Ntf determined according to the detected temperature of the fluid to be cooled is supplied to the pump / motor system 19. As shown in the upper part of Fig. 3, between the fan pump 13 and the fan motor 15 as shown in the upper part of Fig.
- the peak pressure of the pump can be prevented, and the pump 13 for the fan, the motor 15 for the fan, and the piping 14 between the pump and the motor can be prevented from being damaged.
- the pump discharge pressure of the fan pump 13 that is, the motor inlet pressure of the fan motor 15, and the motor outlet pressure and By reducing the differential pressure at the motor outlet, pressure horring of the motor outlet pressure is prevented, and the motor is smoothly operated. 8 Since the outlet pressure can be increased, damage to the fan motor 15 can be prevented.
- the present invention controls not only construction machinery such as hydraulic shovels, but also the pump-motor system to control the fan rotation speed of the cooling fan. It can also be used for other work machines.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Fluid-Pressure Circuits (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
- Component Parts Of Construction Machinery (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/519,904 US7275368B2 (en) | 2003-08-29 | 2004-03-18 | Fan revolution speed control method |
EP04721703A EP1701014A1 (en) | 2003-08-29 | 2004-03-18 | Rotational speed control method of fan |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-307467 | 2003-08-29 | ||
JP2003307467A JP2005076525A (ja) | 2003-08-29 | 2003-08-29 | ファン回転速度制御方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005024199A1 true WO2005024199A1 (ja) | 2005-03-17 |
Family
ID=34269439
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/003677 WO2005024199A1 (ja) | 2003-08-29 | 2004-03-18 | ファン回転速度制御方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7275368B2 (ja) |
EP (1) | EP1701014A1 (ja) |
JP (1) | JP2005076525A (ja) |
KR (1) | KR100688854B1 (ja) |
CN (1) | CN1701165A (ja) |
WO (1) | WO2005024199A1 (ja) |
Cited By (2)
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CN100435468C (zh) * | 2005-08-31 | 2008-11-19 | 台达电子工业股份有限公司 | 风扇控制装置及方法 |
US7921816B2 (en) | 2005-08-29 | 2011-04-12 | Komatsu Ltd. | Control device for hydraulically driven fan |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4206008B2 (ja) * | 2003-08-08 | 2009-01-07 | キャタピラージャパン株式会社 | ファン回転数制御方法 |
US20060228223A1 (en) * | 2005-03-31 | 2006-10-12 | Inventec Corporation | System and method for control of fan rotational speed |
JP4649354B2 (ja) * | 2006-03-20 | 2011-03-09 | キャタピラー エス エー アール エル | 冷却ファンの制御装置及び作業機械の冷却ファンの制御装置 |
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US8739564B2 (en) * | 2008-03-18 | 2014-06-03 | GM Global Technology Operations LLC | Controlling temperature of vehicle devices using a variable speed fan |
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US8653763B2 (en) * | 2008-09-12 | 2014-02-18 | Delta Electronics, Inc. | Ventilator and its impeller |
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US8632314B2 (en) | 2009-03-24 | 2014-01-21 | Komatsu Ltd. | Cooling fan driving device and fan rotational speed control method |
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TWI408286B (zh) * | 2010-02-10 | 2013-09-11 | Yen Sun Technology Corp | Fan speed control method |
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CN102458082A (zh) * | 2010-10-22 | 2012-05-16 | 鸿富锦精密工业(深圳)有限公司 | 电子装置温度调节装置 |
JP2011021615A (ja) * | 2010-11-05 | 2011-02-03 | Komatsu Ltd | 冷却用油圧駆動ファンの制御装置および制御方法 |
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01147113A (ja) * | 1987-12-03 | 1989-06-08 | Toyota Motor Corp | 内燃機関の液圧駆動式冷却ファンの回転速度制御装置 |
JPH03295650A (ja) | 1990-04-13 | 1991-12-26 | Sanjiyou Kikai Seisakusho:Kk | 輪転式印刷機における版ローラの自動レジスター装置 |
JP2000213350A (ja) * | 1999-01-27 | 2000-08-02 | Nissan Diesel Motor Co Ltd | ファン油圧駆動装置 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH059515Y2 (ja) * | 1986-06-11 | 1993-03-09 | ||
JPS63124820A (ja) * | 1986-11-12 | 1988-05-28 | Toyota Motor Corp | 内燃機関の冷却フアンの回転速度制御装置 |
US4941437A (en) * | 1987-07-01 | 1990-07-17 | Nippondenso Co., Ltd. | Automotive radiator cooling system |
JP3295650B2 (ja) | 1998-10-08 | 2002-06-24 | 新キャタピラー三菱株式会社 | ファン回転数制御方法およびその装置 |
US6195989B1 (en) * | 1999-05-04 | 2001-03-06 | Caterpillar Inc. | Power control system for a machine |
-
2003
- 2003-08-29 JP JP2003307467A patent/JP2005076525A/ja active Pending
-
2004
- 2004-03-18 KR KR1020047018271A patent/KR100688854B1/ko not_active IP Right Cessation
- 2004-03-18 WO PCT/JP2004/003677 patent/WO2005024199A1/ja active Application Filing
- 2004-03-18 US US10/519,904 patent/US7275368B2/en not_active Expired - Fee Related
- 2004-03-18 EP EP04721703A patent/EP1701014A1/en not_active Withdrawn
- 2004-03-18 CN CNA2004800007876A patent/CN1701165A/zh active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01147113A (ja) * | 1987-12-03 | 1989-06-08 | Toyota Motor Corp | 内燃機関の液圧駆動式冷却ファンの回転速度制御装置 |
JPH03295650A (ja) | 1990-04-13 | 1991-12-26 | Sanjiyou Kikai Seisakusho:Kk | 輪転式印刷機における版ローラの自動レジスター装置 |
JP2000213350A (ja) * | 1999-01-27 | 2000-08-02 | Nissan Diesel Motor Co Ltd | ファン油圧駆動装置 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7921816B2 (en) | 2005-08-29 | 2011-04-12 | Komatsu Ltd. | Control device for hydraulically driven fan |
DE112006002204B4 (de) * | 2005-08-29 | 2012-04-26 | Komatsu Ltd. | Steuervorrichtung für einen hydraulisch angetriebenen Lüfter |
CN100435468C (zh) * | 2005-08-31 | 2008-11-19 | 台达电子工业股份有限公司 | 风扇控制装置及方法 |
Also Published As
Publication number | Publication date |
---|---|
US7275368B2 (en) | 2007-10-02 |
KR100688854B1 (ko) | 2007-03-02 |
US20050254959A1 (en) | 2005-11-17 |
JP2005076525A (ja) | 2005-03-24 |
KR20060025985A (ko) | 2006-03-22 |
CN1701165A (zh) | 2005-11-23 |
EP1701014A1 (en) | 2006-09-13 |
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