EP2410150A1 - Lüfterregelung - Google Patents

Lüfterregelung Download PDF

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Publication number
EP2410150A1
EP2410150A1 EP11004121A EP11004121A EP2410150A1 EP 2410150 A1 EP2410150 A1 EP 2410150A1 EP 11004121 A EP11004121 A EP 11004121A EP 11004121 A EP11004121 A EP 11004121A EP 2410150 A1 EP2410150 A1 EP 2410150A1
Authority
EP
European Patent Office
Prior art keywords
hydraulic
fan
control circuit
fan control
circuit according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP11004121A
Other languages
German (de)
English (en)
French (fr)
Inventor
Wilhelm Ing. Kräutler
Christof Dipl.-Ing. Gaßner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Liebherr Werk Nenzing GmbH
Original Assignee
Liebherr Werk Nenzing GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Liebherr Werk Nenzing GmbH filed Critical Liebherr Werk Nenzing GmbH
Publication of EP2410150A1 publication Critical patent/EP2410150A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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

Definitions

  • the present invention relates to a hydraulic fan control circuit for a machine, in particular for a motor vehicle, a construction machine or a lifting device, with at least one hydraulic pump and at least one hydraulic motor for driving at least one fan.
  • the coolant, the charge air temperature and the oil temperature are maintained constant with variable engine load and ambient temperature by means of hydraulically driven fans.
  • the medium to be cooled flows through the fan area and is cooled by the generated air flow to a defined temperature level.
  • To drive the fan mechanism is a hydraulic motor, which is mechanically connected to the fan of the fan and is part of the hydraulic circuit.
  • each regulated fan drive was driven by an electrically pressure-controlled variable displacement pump.
  • Combination cooler water and intercooler
  • the fan drive is turned up to cool the charge air.
  • a hydraulic fan control circuit for a machine in particular for a motor vehicle, a construction machine or a lifting device, proposed, with at least one hydraulic pump and at least one hydraulic motor for driving at least one fan.
  • the hydraulic pump is preferably connected to the drive train of the machine or is in communication with it, so that a driving force acts on the hydraulic pump.
  • the hydraulic pump sucks the hydraulic fluid from the connected hydraulic tank and conveys the hydraulic medium via corresponding lines to one or more hydraulic motors for driving at least one fan.
  • the number of integrated hydraulic motors is not limited. In this case, the invention is not limited to hydraulic motors for the fan drive, but the hydraulic motors may have additional alternative drive tasks.
  • the hydraulic motor drive torque of at least one hydraulic motor can be regulated by means of the adjustment of the corresponding intake volume.
  • the displacement describes the amount of hydraulic fluid that the hydraulic motor converts per revolution.
  • the displacement of each individual hydraulic motor of the fan control circuit is designed controllable, so that an independent configuration of the individual hydraulic motors is possible.
  • this embodiment of the invention also allows the targeted shutdown or shutdown of a fan within the fan cycle.
  • At least one hydraulic pump is designed as a variable displacement pump.
  • the variable displacement pump it is possible to regulate the hydraulic flow rate within the fan control circuit and the prevailing hydraulic pressure within the system influence. This opens up a central adjustment possibility of the respective rotational speed of the interconnected fan drives or hydraulic motors. Since the required drive torque increases with the speed in fan drives, the speed of several fan drives can be varied via the adjustable motors by controlling the drive torque.
  • variable displacement pump preferably delivers only the hydraulic medium volume flow required for the required speed.
  • stepless control of the fan speed in the range between fan down and maximum speed is provided.
  • the efficiency of the fan control circuit according to the invention can be further optimized and adapted at any time to the present ambient and operating conditions.
  • At least two fan drives and / or hydraulic motors are connected in parallel to each other in the fan control circuit.
  • the parallel connection of the hydraulic motors causes a magnitude equal pressure level at the input of the hydraulic motors.
  • connection of a pressure regulator to the fan circuit can be expedient.
  • the fan circuit is designed to cool one or more machine components.
  • at least one hydraulic motor with attached Fan provided for the cooling of the charge air of an internal combustion engine of the machine. It is conceivable to integrate a hydraulic motor with a fan for cooling the water cooling of the internal combustion engine or for cooling the hydraulic oil.
  • the present invention is further directed to a motor vehicle, a construction machine or a lifting device with a hydraulic fan control circuit according to one of the preceding feature combinations.
  • the hydraulic fan control circuit is preferably carried out according to one of the preceding embodiments, which is why at this point a further explanation in this respect is dispensed with.
  • the pumped hydraulic medium is conveyed to the hydraulic motors 20, 30, which are each mechanically connected to a fan assembly in the form of a fan 50.
  • Both hydraulic motors 20, 30 are designed to be adjustable, specifically in such a way that their resulting drive torques can be adjusted by adjusting the absorption volume of the hydraulic motors 20, 30.
  • the adjustment of the absorption volume of the hydraulic motors 20, 30 takes place in accordance with the constant maintenance of the prevailing hydraulic pressure.
  • the hydraulic fluid flowing through is fed back into the connected hydraulic tanks 60 at the outlet of the hydraulic motors 20, 30.
  • Both hydraulic motors 20, 30 are connected in parallel to one another within the hydraulic system, so that an identical pressure level is set on both hydraulic motors 20, 30.
  • the rotational speed of the fan drives 20, 30 can be varied with only one variable displacement pump 10 by adjusting the drive torque, that is to say the adjustment of the displacement volume of the motors 20, 30 and keeping the hydraulic pressure constant.
  • variable displacement pump 10 outputs only the hydraulic volume flow required for the speed to the system. Thus, a performance-optimized drive in a single-circuit system is possible.
  • the speed of the fans 50 can be infinitely varied in the range between standstill and maximum speed by adjusting the engine intake volume of the hydraulic motors 20, 30.
  • the circuit therefore fulfills the criterion of being able to operate one or more fan drives independently of one another.
  • FIG. 2 shows the execution of the hydraulic fan control circuit according to the invention with three hydraulic motors 20, 30, 100 for operating a respective fan mechanism 50.
  • the embodiment provides for the parallel connection of three hydraulic motors 20, 30, 100 and substantially corresponds to the execution of FIG. 1 , similar Components of the hydraulic fan control circuit are identified by the same reference numerals.
  • the two fan control loops of Figures 1 and 2 are suitable for use in large machines, especially in large mobile machines, such as construction machines or lifting equipment.
  • the circuit arrangement is integrated in the usually already provided for the hydraulic circuit of the machine and is suitable for a particularly power-optimized operation of the cooling system.
  • the individual interconnected fans can be controlled independently of each other and therefore allow a particularly economical operation. Also, individual fan drive units can be shut down, which was possible in the previous known from the prior art designs only with the integration of additional circuit components.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Fluid-Pressure Circuits (AREA)
EP11004121A 2010-07-22 2011-05-18 Lüfterregelung Withdrawn EP2410150A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010031835A DE102010031835A1 (de) 2010-07-22 2010-07-22 Lüfterregelung

Publications (1)

Publication Number Publication Date
EP2410150A1 true EP2410150A1 (de) 2012-01-25

Family

ID=44993994

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11004121A Withdrawn EP2410150A1 (de) 2010-07-22 2011-05-18 Lüfterregelung

Country Status (4)

Country Link
US (1) US20120020811A1 (zh)
EP (1) EP2410150A1 (zh)
CN (1) CN202370877U (zh)
DE (1) DE102010031835A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9822736B2 (en) 2011-03-09 2017-11-21 Hamm Ag Self-propelled construction device, in particular a soil compactor

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014008477B4 (de) 2014-06-05 2019-07-04 Liebherr-Mining Equipment Colmar Sas Muldenkipper oder Truck mit einem dieselelektrischen Fahrantrieb, einem Kühlsystem und einem Hydromotor
US10450939B2 (en) 2016-04-28 2019-10-22 Deere & Company Multiple plane recirculation fan control for a cooling package
GB2592989B (en) * 2020-03-13 2022-07-13 Caterpillar Sarl Flow sharing control for multiple hydraulic fan motors
DE102022111020A1 (de) 2022-05-04 2023-11-09 Man Truck & Bus Se Hydrostatischer Antrieb für ein Nutzfahrzeug und Verfahren zum Betreiben eines hydrostatischen Antriebs eines Nutzfahrzeugs
CN115126701A (zh) * 2022-06-24 2022-09-30 德耐尔能源装备有限公司 一种无油移动机液压马达风扇装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4036432A (en) * 1975-11-03 1977-07-19 George Albert L Variable speed fan drive system
US20010029907A1 (en) * 1999-12-17 2001-10-18 Algrain Marcelo C. Twin fan control system and method
EP1715193A2 (en) * 2005-04-20 2006-10-25 Volvo Construction Equipment Holding Sweden AB Apparatus and method for controlling a pump flow of heavy construction equipment
EP1944483A1 (en) * 2005-11-02 2008-07-16 Hitachi Construction Machinery Co., Ltd. Cooling fan drive device for traveling working machine

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3942486A (en) * 1974-08-21 1976-03-09 The United States Of America As Represented By The Secretary Of The Army Hydraulic fan drive system speed control
US3992883A (en) * 1975-10-01 1976-11-23 Lucas Industries Limited Fan drive systems
JPS60174500A (ja) * 1984-02-20 1985-09-07 Ishikawajima Harima Heavy Ind Co Ltd 冷水塔の冷却フアン駆動装置
DE3600640A1 (de) * 1985-03-14 1986-09-25 Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen Regelbarer antrieb eines luefters
DE3707739A1 (de) * 1987-03-11 1988-09-22 Amazonen Werke Dreyer H Hydraulikanlage fuer den antrieb eines streugeraetes
DE3834201A1 (de) * 1988-04-22 1989-11-02 Rexroth Mannesmann Gmbh Anordnung zum zufuehren von druckmittel zu hydraulischen verbrauchern
JPH0949427A (ja) * 1995-08-09 1997-02-18 Shin Caterpillar Mitsubishi Ltd 建設機械の冷却制御装置
JP2701812B2 (ja) * 1995-10-30 1998-01-21 石川島播磨重工業株式会社 冷水塔の冷却ファン液圧駆動制御装置
JPH09317465A (ja) * 1996-05-31 1997-12-09 Komatsu Ltd 冷却用ファンの油圧駆動装置
JP4285866B2 (ja) * 1999-12-22 2009-06-24 株式会社小松製作所 油圧駆動冷却ファン
US6546919B2 (en) * 2001-06-14 2003-04-15 Caterpillar Inc Combined remote first intake air aftercooler and a second fluid from an engine cooler for an engine
DE102007058534B4 (de) * 2007-12-06 2016-01-21 Deere & Company Kühlanordnung mit hydraulisch angetriebenen Lüftern
KR101527218B1 (ko) * 2008-12-18 2015-06-10 두산인프라코어 주식회사 건설기계의 냉각장치
PL2530273T3 (pl) * 2011-06-01 2020-11-16 Joseph Vögele AG Maszyna budowlana z automatyczną regulacją prędkości obrotowej wentylatora

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4036432A (en) * 1975-11-03 1977-07-19 George Albert L Variable speed fan drive system
US20010029907A1 (en) * 1999-12-17 2001-10-18 Algrain Marcelo C. Twin fan control system and method
EP1715193A2 (en) * 2005-04-20 2006-10-25 Volvo Construction Equipment Holding Sweden AB Apparatus and method for controlling a pump flow of heavy construction equipment
EP1944483A1 (en) * 2005-11-02 2008-07-16 Hitachi Construction Machinery Co., Ltd. Cooling fan drive device for traveling working machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9822736B2 (en) 2011-03-09 2017-11-21 Hamm Ag Self-propelled construction device, in particular a soil compactor

Also Published As

Publication number Publication date
US20120020811A1 (en) 2012-01-26
CN202370877U (zh) 2012-08-08
DE102010031835A1 (de) 2012-01-26

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