US20150098804A1 - External actuator for an impeller shroud of a variable water pump - Google Patents

External actuator for an impeller shroud of a variable water pump Download PDF

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Publication number
US20150098804A1
US20150098804A1 US14/508,361 US201414508361A US2015098804A1 US 20150098804 A1 US20150098804 A1 US 20150098804A1 US 201414508361 A US201414508361 A US 201414508361A US 2015098804 A1 US2015098804 A1 US 2015098804A1
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United States
Prior art keywords
drive
water pump
actuator
drive ring
housing
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
US14/508,361
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English (en)
Inventor
Vigel Russalian
Alexander Joseph Morein
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.)
Schaeffler Technologies AG and Co KG
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Schaeffler Technologies AG and Co KG
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Filing date
Publication date
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Priority to US14/508,361 priority Critical patent/US20150098804A1/en
Assigned to SCHAEFFLER TECHNOLOGIES GMBH & CO. KG reassignment SCHAEFFLER TECHNOLOGIES GMBH & CO. KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MOREIN, ALEXANDER JOSEPH, Russalian, Vigel
Publication of US20150098804A1 publication Critical patent/US20150098804A1/en
Assigned to Schaeffler Technologies AG & Co. KG reassignment Schaeffler Technologies AG & Co. KG CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
Assigned to Schaeffler Technologies AG & Co. KG reassignment Schaeffler Technologies AG & Co. KG CORRECTIVE ASSIGNMENT TO CORRECT THE PROPERTY NUMBERS PREVIOUSLY RECORDED ON REEL 037732 FRAME 0347. ASSIGNOR(S) HEREBY CONFIRMS THE APP. NO. 14/553248 SHOULD BE APP. NO. 14/553258. Assignors: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
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
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0027—Varying behaviour or the very pump
    • F04D15/0038—Varying behaviour or the very pump by varying the effective cross-sectional area of flow through the rotor
    • 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
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/406—Casings; Connections of working fluid especially adapted for liquid pumps
    • 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
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P2007/143—Controlling of coolant flow the coolant being liquid using restrictions

Definitions

  • the present invention relates to a drive mechanism suitable for use in variable actuation of an impeller assembly of a variable flow water pump for an internal combustion engine.
  • the flow from a standard water pump is proportional to the engine speed.
  • coolant requirements in an engine vary greatly based on many factors during regular operation.
  • the controls do not always allow for specific flow control levels so that the coolant flow can be optimized for efficient engine performance during the various operating conditions, and instead are generally designed for “off” or “on” operation.
  • an external actuator for a variable water pump which includes a housing and variable flow impeller located in the housing that is connected to a drive shaft.
  • the external actuator includes an actuator housing having an outer wall with a plurality of radially inwardly directed projections.
  • a drive ring is rotatably mounted in the housing and has an internal thread. The radially inwardly directed projections contact an outer surface of the drive ring to define a plurality of hydraulic chambers.
  • a plurality of radially outwardly extending vanes are located on the drive ring, with one of the vanes extending into each of the hydraulic chambers and contacting an inner surface of the outer wall to divide each of the hydraulic chambers into first and second chamber portions.
  • a control valve is provided to control a flow of pressurized hydraulic fluid from a pressurized hydraulic fluid source so that (a) pressurized hydraulic fluid flows to the first chamber portions while hydraulic fluid in the second chamber portions is allowed to drain, causing the drive ring to rotate in a first direction, (b) pressurized hydraulic fluid flows to the second chamber portions while hydraulic fluid in the first chamber portions is allowed to drain, causing the drive ring to rotate in a second direction, opposite the first direction, or (c) hydraulic fluid in the first and second chamber portions is held in both of the chamber portions, fixing the drive ring in position.
  • a drive nut having external threads is located within the drive ring, with the external threads engaging the internal threads of the drive ring so that rotation of the drive ring causes an axial displacement of the drive nut.
  • At least one actuator pin is connected to the drive nut and is adapted to extend into the water pump housing to actuate the variable flow impeller.
  • the internal and external threads are multi-lead threads, and the drive ring is adapted to rotate less than 180°. More preferably, there are four of the hydraulic chambers provided, and four of the vanes extend from the drive ring into the hydraulic chambers, and the drive ring is adapted to rotate less than 90° in order to actuate the variable flow impeller.
  • the actuator housing is mounted to the front of the water pump housing and has a hollow center, and is adapted to be fastened to the water pump housing about the drive shaft. Alternatively, it can be located on the back side of the water pump housing.
  • a return spring is preferably located around each of the actuator pins so that the drive nut is biased to a position in which the variable flow impeller provides for full flow of coolant through the water pump.
  • the internal and external threads on the drive ring and the drive nut are not self-locking.
  • variable flow impeller includes an impeller fixed to the drive shaft and an axially displaceable shroud
  • the at least one actuator pin is adapted to be connected to the shroud for axial movement of the shroud in order to vary an output of the water pump.
  • the pins extend through the housing into the pump chamber and are connected to the shroud and the shroud does not rotate within the water pump.
  • the shroud is rotatable with the impeller, and the at least one actuator pin is connected to a contact ring that presses against the shroud in order to move the shroud to a deactivated position.
  • a return spring is provided in order to move the shroud to a position allowing the water pump to provide a full flow of coolant.
  • a slide bearing or coating is provided on at least one of the contact ring or the shroud in a contact region between the contact ring and the shroud in order to prevent wear and increase the life of the variable water pump.
  • a variably actuatable water pump having a pump housing with a pump chamber.
  • a drive shaft extends through the pump housing from a drive side of the water pump to the pump chamber, with a drive wheel connected to a drive side end of the drive shaft.
  • a variable flow impeller is located in the pump chamber, including an axially fixed impeller part connected to the drive shaft and an axially movable shroud, movable relative to the axially fixed impeller part from a first position in which blades connected to the impeller part are exposed in order to pump coolant, to a second position in which the blades are covered in order to prevent pumping of the coolant.
  • An external actuator is connected to the pump housing.
  • the external actuator includes an actuator housing having an outer wall with a plurality of radially inwardly directed projections.
  • a drive ring is rotatably mounted in the housing and has an internal thread. The radially inwardly directed projections contact an outer surface of the drive ring to define a plurality of hydraulic chambers.
  • a plurality of radially outwardly extending vanes are located on the drive ring, with one of the vanes extending into each of the hydraulic chambers and contacting an inner surface of the outer wall to divide each of the hydraulic chambers into first and second chamber portions.
  • a control valve is provided to control a flow of pressurized hydraulic fluid from a pressurized hydraulic fluid source so that (a) pressurized hydraulic fluid flows to the first chamber portions while hydraulic fluid in the second chamber portions is allowed to drain, causing the drive ring to rotate in a first direction, (b) pressurized hydraulic fluid flows to the second chamber portions while hydraulic fluid in the first chamber portions is allowed to drain, causing the drive ring to rotate in a second direction, opposite the first direction, or (c) hydraulic fluid in the first and second chamber portions is held in both of the chamber portions, fixing the drive ring in position.
  • a drive nut having external threads is located within the drive ring with the external threads engaging the internal threads of the drive ring so that rotation of the drive ring causes an axial displacement of the drive nut.
  • At least one actuator pin is connected to the drive nut and extends into the water pump housing to axially move the shroud between the first and second positions.
  • variable water pump is provided on an internal combustion engine
  • the actuator assembly has a hollow center and is adapted to be fastened to the water pump housing about the drive shaft in a space between the drive wheel and the pump housing.
  • This space is typically open in internal combustion engines and thus an actuator can be provided without increasing an axial length of the internal combustion engine arrangement.
  • one or more seals are located between the actuator pin(s) and the pump housing at the areas where the pins enter the pump housing.
  • control valve is connected to a pressurized hydraulic fluid source which can be the engine oil lubrication system of the internal combustion engine in order to provide pressurized hydraulic fluid to the first chamber portions or the second chamber portions in order to move the drive ring in the desired direction so that the drive nut axially shifts the actuator pin(s) in order to move the shroud between the fully covered and fully uncovered positions of the water pump impeller.
  • a pressurized hydraulic fluid source which can be the engine oil lubrication system of the internal combustion engine in order to provide pressurized hydraulic fluid to the first chamber portions or the second chamber portions in order to move the drive ring in the desired direction so that the drive nut axially shifts the actuator pin(s) in order to move the shroud between the fully covered and fully uncovered positions of the water pump impeller.
  • the control valve preferably allows the position of the shroud to be held by preventing the flow of hydraulic fluid from either the first or second chamber portions, and thus allows the shroud to be maintained in any desired position between the fully uncovered and the fully covered positions of the impeller vanes so that the volume flow of coolant through the water pump can be regulated depending upon various running conditions of the internal combustion engine.
  • FIG. 1 is cross-sectional view through a first embodiment of a variable water pump having an external actuator.
  • FIG. 2 is a front view, partially in cross-section, through the actuator housing of FIG. 1 .
  • FIG. 3 is a detailed elevational view, in cross-section, of the drive ring used in the external actuator shown in FIG. 1 .
  • FIG. 4 is a perspective detailed view of the drive nut and actuator pins used in the external actuator shown in FIG. 1 .
  • FIG. 5 is a partially exploded schematic view showing an alternate arrangement of the drive nut, actuator pins and a contact ring used to actuate the impeller shroud in a variable water pump.
  • variable water pump 12 having an external actuator assembly 10 is shown.
  • the variable water pump 12 includes a housing 14 with a pump chamber 15 defined therein.
  • a variable flow impeller assembly is provided having an impeller 16 as well as a shroud 18 which can be shifted axially to expose more or less of the vanes of the impeller 16 in order to control the flow of coolant through the water pump 12 .
  • the shroud 18 may or may not form a seal with the water pump housing 14 or possibly a volute element (not shown) opposite of the impeller 16 , fully cutting off fluid flow to the impeller blades.
  • the impeller 16 is mounted on a drive shaft 22 of the an integral shaft bearing assembly 20 , which is provided as a unit including the shaft 22 and the bearings 24 that can then be assembled into the water pump housing 14 .
  • a seal 26 is preferably provided around the drive shaft 22 to prevent coolant from escaping from the pump chamber 15 along the drive shaft 22 .
  • a drive wheel 28 is preferably connected to a drive side of the drive shaft 22 .
  • the external actuator 10 is preferably mounted to the water pump 12 in an area between the drive wheel 28 and the water pump housing 14 .
  • the actuator 10 includes a housing 30 having a base plate 32 and a cover plate 34 .
  • the base plate 32 can optionally be formed on the front of the water pump housing 14 as an integral part.
  • the base plate 32 preferably has a generally circular outer wall 35 with a plurality of radially inwardly directed projections 36 extending from an inside surface of the outer wall 35 .
  • a drive ring 40 is rotatably mounted in the actuator housing 30 .
  • the drive ring 40 has an internal thread 42 , shown in detail in FIG. 3 , located on the inner surface. As shown in FIG.
  • the radially inwardly directed projections 36 from the actuator housing outer wall 35 contact an outer surface of the drive ring 40 to define a plurality of hydraulic chambers 38 .
  • Seals can be located at the ends of the projections 36 in order to provide sealing contact.
  • a plurality of radially outwardly extending vanes 44 are located on the drive ring 40 , with one of the vanes 44 extending into each of the hydraulic chambers 38 and contacting an inner surface of the outer wall 35 to divide each of the hydraulic chambers 38 into first and second chamber portions 46 , 48 , as shown in FIG. 2 .
  • the side edges of the vanes 44 preferably sealingly engage the inner facing side surfaces of the base plate 32 and cover plate 34 , and the radially outer edges of the vanes 44 contact the inner surface of the outer wall 35 in a sealing manner via seals or optionally by providing the vanes 44 as movable parts on the drive ring 44 which are biased outwardly from the drive ring 40 and against the inner surface of the outer wall 35 . While four chambers 38 are shown, this number can be varied along with the number of vanes 44 that divide the chambers 38 into the first and second chamber portions 46 and 48
  • a drive nut 60 having external threads 62 is located within the drive ring 40 , with the external threads 62 , for example as shown in FIG. 4 , engaging the internal threads 42 of the drive ring 40 as shown in FIG. 3 so that rotation of the drive ring 40 causes an axial displacement of the drive nut 60 .
  • at least one actuator pin 64 is connected to the drive nut 60 and extends through openings 65 in the water pump housing 14 to actuate the variable flow impeller, preferably via being connected to the shroud 18 as shown.
  • the shroud 18 is axially movable as indicated by the arrow, but is rotationally fixed. Seals 68 are arranged around the actuator pins 64 in the pump housing 14 .
  • the internal and external threads 42 , 62 are multi-lead threads, as illustrated for example in FIG. 3 , and the drive ring 40 is adapted to rotate less than 180°.
  • the drive ring 40 is adapted to rotate less than 90° in order to shift the drive nut 60 and the attached actuator pin(s) 64 a sufficient axial distance so that the shroud 18 can be moved between a fully covered position, as shown in FIG.
  • variable water pump flow is restricted due to the vanes of the impeller 16 being covered by the shroud 18 , to an uncovered position which the shroud 18 is shifted (to the left from the position shown in FIG. 1 ) by movement of the drive ring 40 in the clockwise direction when viewed in connection with FIG. 2 so that the drive nut 60 is shifted axially and raises the shroud 18 .
  • Return springs 66 are preferably provided around the actuator pins 64 so that in the event of failure of hydraulic fluid being delivered to the chamber portions 46 , 48 , the drive nut 60 is shifted (to the left in FIG. 1 ) and the shroud 18 uncovers the vanes of the impeller 16 so that the water pump 12 is placed in a fail-safe operating position.
  • a control valve 54 is provided to control a flow of pressurized hydraulic fluid from a pressurized hydraulic fluid source, preferably an engine oil lubrication circuit, in order to control the external actuator 10 .
  • the control valve 54 includes an inlet I, two control connections A, B and a tank outlet T, as indicated.
  • the control valve 54 can be adjusted to a first state to provide a flow of pressurized hydraulic fluid to the first chamber portions 46 while hydraulic fluid in the second chamber portions 48 is allowed to drain via the drain T, causing the drive ring 40 to rotate in a first direction, here represented as a clockwise direction in FIG. 2 .
  • the valve 54 is adjustable to a second state wherein pressurized hydraulic fluid flows to the second chamber portions 48 while hydraulic fluid in the first chamber portions 46 is allowed to drain to tank T, causing the drive ring to rotate in a second direction, opposite the first direction, illustrated in FIG. 2 as the counter clockwise direction.
  • the control valve 54 is also adjustable to a third state such that hydraulic fluid in the first and second chamber portions 46 , 48 is held in the chamber portions 46 , 48 , fixing the drive ring in position.
  • a controller which can be the ECM or a separate controller adjusts the position of the control valve 54 to allow a variable positioning of the shroud 18 in the water pump in order to control or regulate the flow of coolant from the water pump 12 based on engine operating conditions.
  • a drain connection not shown, can also be provided from the actuator housing 30 so that any seepage of oil from the actuator assembly 10 can be directed back to the engine oil lubricant reservoir.
  • the return springs 66 In order to allow the return springs 66 to return the drive nut 60 to the fail-safe position, the internal and external threads 42 , 62 , are not self-locking threads. Accordingly, during a low pressure or failure of delivery of pressurized hydraulic fluid to the control valve 54 , the return springs 66 can move the drive nut 60 to a position in which the shroud 18 does not cover the vanes on the impeller 16 .
  • variable flow impeller assembly includes the impeller 16 which is fixed to the drive shaft 22 and the shroud 18 is axially displaceable via the actuator pin(s) 64 connected to the drive nut 60 .
  • This allows axial movement of the shroud 18 in order to control an output flow from the water pump 12 .
  • This arrangement is preferably used in connection with an on/off operation of the variable water pump 12 .
  • FIG. 5 For a flow regulating arrangement, one preferred alternate arrangement of the water pump and the connection of the actuator 10 to the variable flow impeller assembly is shown in FIG. 5 . Only the differences from the arrangement shown in FIG. 1 are shown in detail.
  • the drive nut 60 ′ is shown with actuator pins 64 connected to a contact ring 74 .
  • the water pump housing is schematically represented by the dashed line 14 , with the seals 68 also being represented around the actuator pins 64 where they extend through the water pump housing 14 .
  • the contact ring 74 is adapted to contact the shroud 18 ′ which is arranged facing away from the drive wheel side of the water pump 12 for axial movement over the impeller 16 which is connected to the drive shaft (not shown in FIG. 5 ).
  • a slide bearing or anti-friction coating indicated at 78 is provided on the contact ring 74 .
  • This can be in the form of a PTFE coating or layer. This reduces wear and friction in a contact region between the contact ring 74 and the shroud 18 .
  • a return spring 79 is preferably provided so that the shroud 18 ′ is biased toward the left in FIG. 5 to a fail-safe position so the vanes of the impeller 16 are exposed in order to pump coolant in the event that the actuator 10 cannot operate. While the spring 79 is shown in one end position, those of ordinary skill in the art will appreciate from the present disclosure that the spring could be located at other axial positions to provide the same effect of biasing the shroud 18 ′ to the fail-safe position. When a lower coolant flow or no coolant flow is desired, the drive nut 60 ′ is axially displaced via the actuator assembly 10 so that the shroud 18 ′ is moved to the right in FIG. 5 against the pressure of the spring 79 partially or fully covering the vanes of the impeller 16 to either regulate or stop the flow of coolant through the water pump 12 .
  • the actuator assembly 10 can be provided separately or in conjunction with a water pump 12 providing a variably actuatable water pump assembly including the features of the water pump 12 and the actuator assembly 10 .
  • This arrangement provides the ability to have a variable water pump 12 in approximately the same envelope as an existing water pump by utilizing a portion of the space between the drive wheel and the water pump housing. This allows for improvements in engine efficiency and performance while maintaining a small space requirement and low cost.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
US14/508,361 2013-10-07 2014-10-07 External actuator for an impeller shroud of a variable water pump Abandoned US20150098804A1 (en)

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US14/508,361 US20150098804A1 (en) 2013-10-07 2014-10-07 External actuator for an impeller shroud of a variable water pump

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US201361887497P 2013-10-07 2013-10-07
US14/508,361 US20150098804A1 (en) 2013-10-07 2014-10-07 External actuator for an impeller shroud of a variable water pump

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160222875A1 (en) * 2015-02-04 2016-08-04 Bullseye Power, LLC Tunable turbocharger compressor cover
CN106593614A (zh) * 2015-10-20 2017-04-26 Tcg唯科***工程有限公司 冷却剂泵
WO2017076649A1 (de) * 2015-11-06 2017-05-11 Pierburg Gmbh Kühlmittelpumpe für eine verbrennungskraftmaschine
WO2017076648A1 (de) * 2015-11-06 2017-05-11 Pierburg Gmbh Verfahren zur regelung einer mechanisch regelbaren kühlmittelpumpe für eine verbrennungskraftmaschine
WO2019053377A1 (fr) * 2017-09-18 2019-03-21 Sogefi Air & Cooling Dispositif de pompe a debit variable et circuit comprenant une telle pompe
EP4031774A4 (de) * 2019-09-18 2023-10-11 Massachusetts Institute of Technology Adaptive spiralen für kreiselpumpen

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US4070132A (en) * 1976-11-02 1978-01-24 Baltimore Aircoil Company, Inc. Variable performance pump
US4752183A (en) * 1986-03-31 1988-06-21 Aisin Seiki Kabushiki Kaisha Water pump
US5169286A (en) * 1989-03-09 1992-12-08 Yutaka Yamada Variable capacity centrifugal water pump with movable pressure chamber formed by impeller
US6935839B2 (en) * 2000-04-13 2005-08-30 Tesma International Inc. Variable flow water pump
US7186071B2 (en) * 2000-01-26 2007-03-06 Tesma International Inc. Variable flow water pump

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DE102008006451B4 (de) * 2008-01-29 2012-05-16 Audi Ag Kühlmittelpumpe mit integriertem Stellventil für einen Kühlkreislauf einer Brennkraftmaschine
DE102008049204A1 (de) * 2008-09-27 2010-04-01 Man Nutzfahrzeuge Ag Kühlsystem für Fahrzeuge mit flüssigkeitsgekühlter Brennkraftmaschine
DE102011005476A1 (de) * 2011-03-14 2012-09-20 Schaeffler Technologies AG & Co. KG Regelbare Kühlpumpe für einen Kühlkreislauf einer Brennkraftmaschine
DE102011076719A1 (de) * 2011-05-30 2012-12-06 Schaeffler Technologies AG & Co. KG Regelbare Kühlmittelpumpe mit einem bauraumoptimierten Stellorgan
DE102012207387A1 (de) * 2011-07-27 2013-01-31 Mahle International Gmbh Kühleinrichtung

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US4070132A (en) * 1976-11-02 1978-01-24 Baltimore Aircoil Company, Inc. Variable performance pump
US4752183A (en) * 1986-03-31 1988-06-21 Aisin Seiki Kabushiki Kaisha Water pump
US5169286A (en) * 1989-03-09 1992-12-08 Yutaka Yamada Variable capacity centrifugal water pump with movable pressure chamber formed by impeller
US7186071B2 (en) * 2000-01-26 2007-03-06 Tesma International Inc. Variable flow water pump
US6935839B2 (en) * 2000-04-13 2005-08-30 Tesma International Inc. Variable flow water pump

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9932885B2 (en) * 2015-02-04 2018-04-03 Bullseye Power, LLC Tunable turbocharger compressor cover
US20160222875A1 (en) * 2015-02-04 2016-08-04 Bullseye Power, LLC Tunable turbocharger compressor cover
CN106593614A (zh) * 2015-10-20 2017-04-26 Tcg唯科***工程有限公司 冷却剂泵
CN108350889A (zh) * 2015-11-06 2018-07-31 皮尔伯格有限责任公司 用于内燃机的冷却剂泵
WO2017076648A1 (de) * 2015-11-06 2017-05-11 Pierburg Gmbh Verfahren zur regelung einer mechanisch regelbaren kühlmittelpumpe für eine verbrennungskraftmaschine
CN108350888A (zh) * 2015-11-06 2018-07-31 皮尔伯格有限责任公司 用于内燃机的可机械调控的冷却机泵的调控方法
WO2017076649A1 (de) * 2015-11-06 2017-05-11 Pierburg Gmbh Kühlmittelpumpe für eine verbrennungskraftmaschine
US10578006B2 (en) * 2015-11-06 2020-03-03 Pierburg Gmbh Method for controlling a mechanically controllable coolant pump for an internal combustion engine
US10731654B2 (en) 2015-11-06 2020-08-04 Pierburg Gmbh Coolant pump for an internal combustion engine
WO2019053377A1 (fr) * 2017-09-18 2019-03-21 Sogefi Air & Cooling Dispositif de pompe a debit variable et circuit comprenant une telle pompe
FR3071278A1 (fr) * 2017-09-18 2019-03-22 Sogefi Air & Cooling Dispositif de pompe a debit variable et circuit comprenant une telle pompe
US11168694B2 (en) 2017-09-18 2021-11-09 Sogefi Air & Cooling Variable-delivery pump device and circuit including such a pump
EP4031774A4 (de) * 2019-09-18 2023-10-11 Massachusetts Institute of Technology Adaptive spiralen für kreiselpumpen

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DE102014219565A1 (de) 2015-04-09
DE102014219565B4 (de) 2015-10-15

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