US20090155103A1 - Cooling Fan Module for a Motor Vehicle - Google Patents

Cooling Fan Module for a Motor Vehicle Download PDF

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Publication number
US20090155103A1
US20090155103A1 US12/089,844 US8984406A US2009155103A1 US 20090155103 A1 US20090155103 A1 US 20090155103A1 US 8984406 A US8984406 A US 8984406A US 2009155103 A1 US2009155103 A1 US 2009155103A1
Authority
US
United States
Prior art keywords
motor
fan
fan motor
control unit
cooling fan
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.)
Abandoned
Application number
US12/089,844
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English (en)
Inventor
Pietro De Filippis
Harald Redelberger
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.)
Brose Fahrzeugteile SE and Co KG
Original Assignee
Brose Fahrzeugteile SE and Co KG
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 Brose Fahrzeugteile SE and Co KG filed Critical Brose Fahrzeugteile SE and Co KG
Assigned to CONTINENTAL AUTOMOTIVE GMBH reassignment CONTINENTAL AUTOMOTIVE GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: REDELBERGER, HARALD, FILIPPIS, PIETRO DE
Assigned to BROSE FAHRZEUGTEILE GMBH & CO. KOMMANDITGESELLSCHAFT, WUERZBURG reassignment BROSE FAHRZEUGTEILE GMBH & CO. KOMMANDITGESELLSCHAFT, WUERZBURG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CONTINENTAL AUTOMOTIVE GMBH
Publication of US20090155103A1 publication Critical patent/US20090155103A1/en
Abandoned legal-status Critical Current

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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
    • F04D25/00—Pumping installations or systems
    • F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
    • F04D25/166—Combinations of two or more pumps ; Producing two or more separate gas flows using fans
    • 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
    • F01P7/048—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio using electrical drives
    • 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 invention relates to a cooling fan module for a motor vehicle.
  • the invention relates to a cooling fan module with a first fan motor for driving a first cooling fan and with a second fan motor for driving a second cooling fan.
  • cooling fan modules for motor vehicles.
  • the module is also referred to as a double module.
  • more than one cooling fan There are a number of reasons for using more than one cooling fan:
  • the space available in the motor vehicle is often restricted.
  • the fan output required is often an argument for using a number of cooling fans. Since for higher outputs the fan motors employed are of greater length, it often makes sense, as regards the length of module needed, to divide the module up into two smaller, shorter fan motors. If high cooling power is required, a separation into two (or more) cooling fans is often sensible and/or necessary, since, because of its inadequate heat removal, a single fan motor cannot provide the power needed.
  • cooling fan modules can be used if—for example for reasons of availability—a redundancy is to be achieved.
  • a cost-effective and compact fan cooling can be provided by a cooling fan module for a motor vehicle, comprising a brushless first fan motor for driving a first cooling fan and a second fan motor for driving a second cooling fan, a control unit being assigned to the first fan motor, which, at the same time as operating the first fan motor, also operates the second fan motor.
  • the first fan motor and the second fan motor may be connected in parallel.
  • the second fan motor may be a dc motor with brushgear which on the one hand is connected via a phase-dependent number of rectifiers to connection elements of the first fan motor and on the other hand to the power supply line or the ground line of the control unit.
  • the second fan motor may be an asynchronous motor or a synchronous motor which is connected directly to the connection elements of the first motor.
  • a method for operating a cooling fan module for a motor vehicle may comprise the steps of: assigning a control unit to the first fan motor, which, as well as operating the first fan motor also operates the second fan motor at the same time, and controlling the first fan motor via the control unit with speed regulation and the speed of the second fan motor being set as a function of the speed of the first fan motor.
  • FIG. 1 a schematic block diagram of a parallel double module
  • FIG. 2 a switching diagram of a parallel double module with a second motor with brushgear in a version with a plus-side connection
  • FIG. 3 a switching diagram of a parallel double module with a second motor with brushgear in a version with ground-side connection and
  • FIG. 4 a switching diagram of a parallel double module with an asynchronous motor.
  • the cooling fan module has a brushless first fan motor for driving a first cooling fan and a second fan motor for driving of a second cooling fan, with the first fan motor being assigned a control unit which operates the first fan motor at the same time as it operates the second fan motor.
  • Such a cooling fan module allows a method to be implemented with which the first fan motor is activated via the control unit with its speed regulated and the speed of the second fan motor is set as a function of the speed of the first fan motor.
  • a hybrid arrangement of a brushless fan motor with a second fan motor is provided.
  • this arrangement only one electronics unit is used for the brushless fan motor and this is used for the second fan motor as well.
  • the second fan motor (which does not have a control unit of its own) is operated automatically and inevitably as soon as the first fan motor is operated. Only a single control unit is employed in this case.
  • a higher system efficiency overall can be achieved since the brushless fan motor as a rule has an approximately 10-15% higher efficiency.
  • the first fan motor and the second fan motor are connected in parallel, so that a “parallel double module” is produced.
  • control unit is connected to a power supply line and a ground line and has a number of connection elements for connecting the first fan motor.
  • the control unit in such cases can be arranged on the one hand in the housing of the first fan motor. On the other hand however it can also be provided outside the housing of the first fan motor as an external control unit.
  • the first fan motor may be preferably a brushless motor with any number of phases, for example with three or five phases, which is operated in bipolar or unipolar mode.
  • the second fan motor may be preferably a dc motor with brushgear, which on the one hand is connected via a phase-dependent number of rectifiers to the connection elements of the first fan motor and on the other hand is linked to the power supply line or the ground line of the control unit.
  • the use of a direct current motor with brushgear enables the cooling fan module to be produced in a more cost-effective manner than comparable solutions with two brushless fan motors.
  • an asynchronous motor or a synchronous motor can also be used instead of a dc motor with brushgear. This can then be connected directly to the connection elements of the first motor.
  • the use of an asynchronous motor or synchronous motor enables the number of components needed to be further reduced.
  • asynchronous motors are not only extremely robust, but are also comparatively cheap to manufacture.
  • the speed of the first motor is regulated in accordance with a further embodiment in the control unit, which receives setpoint speed information as an input signal.
  • a cooling fan module for a motor vehicle features a first fan motor 2 for driving a first cooling fan 3 and a second fan motor 4 for driving a second cooling fan 5 .
  • FIG. 1 shows such a double configuration in a greatly simplified illustration, in which the power supply line 9 as well as the further connecting lines are only shown schematically.
  • the integrated control unit 6 of the first fan motor 2 serves as the sole control unit for simultaneous operation of the second fan motor which is connected in parallel with the first fan motor 2 .
  • the integrated control unit 6 in this case is arranged in the housing 7 of the first fan motor 2 , while the housing 8 of the second fan motor remains free and can accordingly be designed smaller.
  • a cooling fan motor for a motor vehicle has a brushless motor 11 as its first fan motor and a dc motor with brushgear 12 as its second fan motor.
  • the cooling fans 3 , 5 themselves are not shown in order to improve the clarity of FIG. 2 .
  • Fan motors 11 , 12 are connected in parallel.
  • the brushless motor 11 features an integrated control unit 13 , while no separate control unit is required according to various embodiments for the dc motor with brushgear 12 .
  • the brushless motor 11 is a three-phase, bipolar-operated motor (ac motor).
  • the control unit 13 has control electronics 14 , which for supplying the fan motors 11 , 12 with a supply voltage, is connected to a standard vehicle main power supply line 15 (“terminal 30”) of the motor vehicle and a corresponding ground line 16 (“terminal 31”).
  • a standard vehicle main power supply line 15 (“terminal 30”) of the motor vehicle and a corresponding ground line 16 (“terminal 31”).
  • the control unit 13 is equipped in its power section with the functionality of a converter.
  • An arrangement of electronic switching transistors 17 , 17 ′ power transistors, MOSFETs
  • the control unit 13 of the brushless ac motor 11 is also used for the operation of the dc motor with brushgear 12 , it must be designed for both motor currents, i.e. in the design of the control unit 13 a corresponding power dissipation must be taken into account in the dimensioning.
  • the control electronics 14 is connected via an access line 22 to an external signal generator (not shown) which provides setpoint speed information.
  • the control unit 13 has three phase connections 19 which are connected accordingly to the electronic switching transistors 17 , 17 ′.
  • the dc motor with brushgear 12 is on the one hand connected via three rectifiers 21 (power diodes) to these phase connections 19 .
  • a direct current is created again from the three-phase ac system by the rectifiers 21 .
  • the dc motor with brushgear 12 is connected to the dc power supply line 15 .
  • the dc power supply line 15 also serves as common reference point for the two fan motors 11 , 12 .
  • the said three-phase connections 19 must additionally be provided.
  • any types of terminal contacts can be used, for example screw or clamp contacts.
  • the rectifiers 21 are also preferably arranged, because of the cooling facilities already provided there (as illustrated in FIG. 2 ), in the housing 7 of the brushless ac motor 11 or alternatively in the housing 8 of the dc motor with brushgear 12 . Accordingly just a single connection or also three connections must be brought out of the housing 7 of the brushless ac motor 11 .
  • a three-phase brushless ac motor 11 is again used as the first fan motor and a dc motor with brushgear 12 as the second fan motor.
  • the layout of the cooling fan module and the wiring in this case corresponds to the exemplary embodiment shown in FIG. 2 , with the difference that the dc motor with brushgear 12 is not connected to the dc power supply line 15 but to the ground line 16 .
  • the ground line 16 serves as a common reference point for the two fan motors 11 , 12 .
  • the three rectifiers 21 (diodes) are accordingly connected in the reverse direction.
  • the current in the brushless ac motor 11 with integrated control unit 13 the current is also limited in the dc motor with brushgear 12 without additional electronic components or other measures being necessary.
  • This enables both a blocking protection function and also a short-circuit protection function to be achieved in a simple manner for the dc motor with brushgear 12 .
  • the prerequisite for an effective protection function is that both motor currents are recorded for current measurement in the control unit 13 .
  • the easiest way to achieve this is for the two currents to be directed via the same current measurement device (not shown), e.g. a shunt. Any overcurrent switch-off or similar protection functions in the integrated control unit 13 of the brushless ac motor 11 also protects the dc motor with brushgear 12 .
  • a further advantage of the arrangement according to various embodiments is that, no further electronic components are required in addition to the rectifiers 21 for the dc motor with brushgear 12 . Since the dc motor with brushgear 12 does not have a separate control unit, no power dissipation occurs through electronic components. This also reduces the cooling effort required.
  • the parallel connection according to various embodiments of the two fan motors 11 , 12 also has effects on the operating behavior of the two cooling fans 3 , 5 .
  • the brushless ac motor 11 is operated via the control unit 13 with speed regulation.
  • the speed of a motor always depends directly on the equivalent voltage at the motor.
  • a voltage is also predetermined via the rectifiers 21 for the dc motor with brushgear 12 corresponding to the speed of the brushless ac motor 11 and the speed of the dc motor with brushgear 12 . This corresponds to a speed setting similar to that undertaken with a PWM controller.
  • the speed of the dc motor with brushgear 12 is not controlled in this case.
  • an asynchronous motor 23 can also be provided as the second fan motor, cf. FIG. 4 .
  • the asynchronous motor 23 is connected in this case directly to the phase terminals 19 of the brushless ac motor 11 . In such cases three connections are brought out from housing 7 of the first fan motor 11 .
  • the asynchronous motor 23 in this configuration follows the three-phase power predetermined by the integrated control unit 13 of the brushless ac motor 11 .
  • This embodiment in addition to the characteristics already described, has the further advantage of not requiring any rectifiers.
  • first and second fan motors preferably brushless ac motors 11 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Multiple Motors (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
  • Air-Conditioning For Vehicles (AREA)
US12/089,844 2005-10-12 2006-09-05 Cooling Fan Module for a Motor Vehicle Abandoned US20090155103A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102005048887 2005-10-12
DE102005048887.0 2005-10-12
PCT/EP2006/066021 WO2007042353A1 (de) 2005-10-12 2006-09-05 Kühlerlüftermodul für ein kraftfahrzeug

Publications (1)

Publication Number Publication Date
US20090155103A1 true US20090155103A1 (en) 2009-06-18

Family

ID=37401611

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/089,844 Abandoned US20090155103A1 (en) 2005-10-12 2006-09-05 Cooling Fan Module for a Motor Vehicle

Country Status (6)

Country Link
US (1) US20090155103A1 (de)
EP (1) EP1934485B1 (de)
CN (1) CN101351648A (de)
AT (1) ATE508281T1 (de)
DE (1) DE502006009450D1 (de)
WO (1) WO2007042353A1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120229067A1 (en) * 2011-03-10 2012-09-13 Barbero Maurizio Voltage regulator for dc motors
RU2462603C2 (ru) * 2010-09-15 2012-09-27 "Научное производственное объединение автоматики" имени академика Н.А. Семихатова Способ воздушного охлаждения блоков пуско-тормозных резисторов
US10239401B2 (en) 2017-01-23 2019-03-26 Auburn Gear, Llc Electric motor and gearing assembly
US20200021211A1 (en) * 2018-07-11 2020-01-16 Johnson Electric International AG Actuator having two motors and cooling fan module using the same

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010035300B4 (de) 2009-08-28 2012-05-31 Jörg Hartzsch Vorrichtung und Verfahren zum Betreiben mehrerer Komponenten an einfachen elektrischen Datenverbindungen
CN102777245A (zh) * 2011-05-12 2012-11-14 杭州银轮科技有限公司 一种动力装置智能化冷却系统
US9136784B2 (en) 2012-03-20 2015-09-15 GM Global Technology Operations LLC Universal control unit for brushed or brushless DC motor

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US3303955A (en) * 1965-12-01 1967-02-14 Aluminum Co Of America Container closure
US4459087A (en) * 1982-06-02 1984-07-10 Aciers Et Outillage Peugeot Fan unit for an internal combustion engine of automobile vehicle
US4590892A (en) * 1983-10-07 1986-05-27 Nissan Motor Co., Ltd. Cooling system for vehicle
US4626723A (en) * 1982-03-15 1986-12-02 Ambac Industries, Incorporated Actuator system for automotive seat mover mechanisms and the like
US4779577A (en) * 1986-07-26 1988-10-25 Dr. Ing.H.C.F. Porsche Aktiengesellschaft Cooling air flap and blower control for motor vehicles
US4797600A (en) * 1987-11-27 1989-01-10 General Motors Corporation Magnetic drive control system for a multiple cooling fan installation
US4988930A (en) * 1990-04-25 1991-01-29 Oberheide George C Plural motor fan system with improved speed control
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US5763969A (en) * 1996-11-14 1998-06-09 Reliance Electric Industrial Company Integrated electric motor and drive system with auxiliary cooling motor and asymmetric heat sink
US5947189A (en) * 1997-03-11 1999-09-07 Denso Corporation Heat exchanging system having cooling fan, for vehicle
US5963887A (en) * 1996-11-12 1999-10-05 The United States Of America As Represented By The Secretary Of The Navy Apparatus for optimizing the rotational speed of cooling fans
US5984649A (en) * 1995-09-25 1999-11-16 Mitsubishi Denki Kabushiki Kaisha Air curtain fan with heating elements
US5990590A (en) * 1996-09-10 1999-11-23 Precise Power Corporation Versatile AC dynamo-electric machine
US6066935A (en) * 1991-06-03 2000-05-23 Siemens Aktiengesellschaft Pole-changing asynchronous fan motor with continuously adjustable speed
US6155335A (en) * 1999-04-26 2000-12-05 Delphi Technologies, Inc. Vehicle fan shroud and component cooling module
US6199398B1 (en) * 1997-12-10 2001-03-13 Denso Corporation Vehicle cooling system with system motor control apparatus
US6257832B1 (en) * 1999-02-04 2001-07-10 Dell Usa, L.P. Multiple fan system having means for reducing beat frequency oscillations
US6400113B1 (en) * 2000-07-19 2002-06-04 International Business Machines Corporation Apparatus and method for monitoring fan speeds within a computing system
US6428282B1 (en) * 1999-06-14 2002-08-06 Hewlett-Packard Company System with fan speed synchronization control
US20020155804A1 (en) * 2001-03-12 2002-10-24 Laurent Poutot Ventilation system for a motor vehicle
US20030053913A1 (en) * 2001-09-19 2003-03-20 Takashi Sekiguchi Multifan-equipped apparatus, and method of controlling operation of fan-unit assembly of the apparatus
US6626653B2 (en) * 2001-01-17 2003-09-30 Delta Electronics Inc. Backup heat-dissipating system
US20040066156A1 (en) * 2002-10-03 2004-04-08 John Makaran Dual motor configuration with primary brushless motor and secondary integrated speed control motor
US20050116554A1 (en) * 2001-12-14 2005-06-02 Viktor Dano Electric drive unit
US20050121170A1 (en) * 2003-12-09 2005-06-09 Akihiro Maeda Heat exchanger and cooling module having the same
US20060120903A1 (en) * 2004-12-06 2006-06-08 Denso Corporation Electric fan system for vehicle
US7406835B2 (en) * 2005-05-10 2008-08-05 Emp Advanced Development, Llc Cooling system and method for cooling a heat producing system
US7484378B2 (en) * 2005-05-10 2009-02-03 Emp Advanced Development, Llc Cooling system and method for cooling a heat producing system

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US5771961A (en) * 1995-08-03 1998-06-30 Valeo Thermique Moteur Fan module
JP3861704B2 (ja) 2002-01-31 2006-12-20 株式会社デンソー 車両用冷却ファンモータの駆動装置
JP2005030363A (ja) 2003-07-11 2005-02-03 Denso Corp 車両用電動ファンシステム
JP2006007921A (ja) * 2004-06-24 2006-01-12 Denso Corp 車両用空調装置

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US3303955A (en) * 1965-12-01 1967-02-14 Aluminum Co Of America Container closure
US4626723A (en) * 1982-03-15 1986-12-02 Ambac Industries, Incorporated Actuator system for automotive seat mover mechanisms and the like
US4459087A (en) * 1982-06-02 1984-07-10 Aciers Et Outillage Peugeot Fan unit for an internal combustion engine of automobile vehicle
US4590892A (en) * 1983-10-07 1986-05-27 Nissan Motor Co., Ltd. Cooling system for vehicle
US4779577A (en) * 1986-07-26 1988-10-25 Dr. Ing.H.C.F. Porsche Aktiengesellschaft Cooling air flap and blower control for motor vehicles
US4797600A (en) * 1987-11-27 1989-01-10 General Motors Corporation Magnetic drive control system for a multiple cooling fan installation
US4988930A (en) * 1990-04-25 1991-01-29 Oberheide George C Plural motor fan system with improved speed control
US6066935A (en) * 1991-06-03 2000-05-23 Siemens Aktiengesellschaft Pole-changing asynchronous fan motor with continuously adjustable speed
US5236306A (en) * 1991-07-03 1993-08-17 Licentia Patent-Verwaltungs-Gmbh Axial blower for cooling the condenser of an air conditioner
US5478214A (en) * 1994-02-09 1995-12-26 Illinois Blower, Inc. Compact redundant cooling module and method
US5984649A (en) * 1995-09-25 1999-11-16 Mitsubishi Denki Kabushiki Kaisha Air curtain fan with heating elements
US5660149A (en) * 1995-12-21 1997-08-26 Siemens Electric Limited Total cooling assembly for I.C. engine-powered vehicles
US5990590A (en) * 1996-09-10 1999-11-23 Precise Power Corporation Versatile AC dynamo-electric machine
US5963887A (en) * 1996-11-12 1999-10-05 The United States Of America As Represented By The Secretary Of The Navy Apparatus for optimizing the rotational speed of cooling fans
US5763969A (en) * 1996-11-14 1998-06-09 Reliance Electric Industrial Company Integrated electric motor and drive system with auxiliary cooling motor and asymmetric heat sink
US5947189A (en) * 1997-03-11 1999-09-07 Denso Corporation Heat exchanging system having cooling fan, for vehicle
US6199398B1 (en) * 1997-12-10 2001-03-13 Denso Corporation Vehicle cooling system with system motor control apparatus
US6257832B1 (en) * 1999-02-04 2001-07-10 Dell Usa, L.P. Multiple fan system having means for reducing beat frequency oscillations
US6155335A (en) * 1999-04-26 2000-12-05 Delphi Technologies, Inc. Vehicle fan shroud and component cooling module
US6428282B1 (en) * 1999-06-14 2002-08-06 Hewlett-Packard Company System with fan speed synchronization control
US6400113B1 (en) * 2000-07-19 2002-06-04 International Business Machines Corporation Apparatus and method for monitoring fan speeds within a computing system
US6626653B2 (en) * 2001-01-17 2003-09-30 Delta Electronics Inc. Backup heat-dissipating system
US20020155804A1 (en) * 2001-03-12 2002-10-24 Laurent Poutot Ventilation system for a motor vehicle
US20030053913A1 (en) * 2001-09-19 2003-03-20 Takashi Sekiguchi Multifan-equipped apparatus, and method of controlling operation of fan-unit assembly of the apparatus
US20050116554A1 (en) * 2001-12-14 2005-06-02 Viktor Dano Electric drive unit
US20040066156A1 (en) * 2002-10-03 2004-04-08 John Makaran Dual motor configuration with primary brushless motor and secondary integrated speed control motor
US6933687B2 (en) * 2002-10-03 2005-08-23 Siemens Vdo Automotive Inc. Dual motor configuration with primary brushless motor and secondary integrated speed control motor
US20050121170A1 (en) * 2003-12-09 2005-06-09 Akihiro Maeda Heat exchanger and cooling module having the same
US20060120903A1 (en) * 2004-12-06 2006-06-08 Denso Corporation Electric fan system for vehicle
US7406835B2 (en) * 2005-05-10 2008-08-05 Emp Advanced Development, Llc Cooling system and method for cooling a heat producing system
US7484378B2 (en) * 2005-05-10 2009-02-03 Emp Advanced Development, Llc Cooling system and method for cooling a heat producing system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2462603C2 (ru) * 2010-09-15 2012-09-27 "Научное производственное объединение автоматики" имени академика Н.А. Семихатова Способ воздушного охлаждения блоков пуско-тормозных резисторов
US20120229067A1 (en) * 2011-03-10 2012-09-13 Barbero Maurizio Voltage regulator for dc motors
US8796977B2 (en) * 2011-03-10 2014-08-05 Gate S.R.L. Voltage regulator for DC motors
US10239401B2 (en) 2017-01-23 2019-03-26 Auburn Gear, Llc Electric motor and gearing assembly
US20200021211A1 (en) * 2018-07-11 2020-01-16 Johnson Electric International AG Actuator having two motors and cooling fan module using the same
US10944343B2 (en) * 2018-07-11 2021-03-09 Johnson Electric International AG Actuator having two motors and cooling fan module using the same

Also Published As

Publication number Publication date
EP1934485B1 (de) 2011-05-04
WO2007042353A1 (de) 2007-04-19
EP1934485A1 (de) 2008-06-25
DE502006009450D1 (de) 2011-06-16
ATE508281T1 (de) 2011-05-15
CN101351648A (zh) 2009-01-21

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