US20130011250A1 - Mechanical coolant pump - Google Patents

Mechanical coolant pump Download PDF

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Publication number
US20130011250A1
US20130011250A1 US13/579,037 US201013579037A US2013011250A1 US 20130011250 A1 US20130011250 A1 US 20130011250A1 US 201013579037 A US201013579037 A US 201013579037A US 2013011250 A1 US2013011250 A1 US 2013011250A1
Authority
US
United States
Prior art keywords
flap
volute
pump
coolant pump
mechanical coolant
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
US13/579,037
Other languages
English (en)
Inventor
Arnaud Fournier
Gilles Simon
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.)
Pierburg Pump Technology GmbH
Original Assignee
Pierburg Pump Technology 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 Pierburg Pump Technology GmbH filed Critical Pierburg Pump Technology GmbH
Assigned to PIERBURG PUMP TECHNOLOGY GMBH reassignment PIERBURG PUMP TECHNOLOGY GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FOURNIER, ARNAUD, MR., SIMON, GILLES, MR.
Publication of US20130011250A1 publication Critical patent/US20130011250A1/en
Abandoned 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
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant 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
    • 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
    • F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
    • F04D15/0022—Control, e.g. regulation, of pumps, pumping installations or systems by using valves throttling valves or valves varying the pump inlet opening or the outlet opening

Definitions

  • the present invention relates to a mechanical coolant pump for an internal combustion engine.
  • a mechanical coolant pump is a coolant pump which is driven by the combustion engine, for example, by using a driving belt driving a driving wheel of the pump.
  • mechanical coolant pumps are used which are provided with an outlet valve for controlling the coolant circulation flow. As long as the combustion engine is cold, the outlet valve is closed so that the circulation of the lubricant is minimized, with the result that the combustion engine warming-up phase is decreased.
  • outlet valves are used in the form of a pivoting flap, whereby the pivoting flap is positioned in the pump outlet channel.
  • the pivoting flap is controlled to rotate into an open or closed position, whereby the positions determine the coolant circulation flow rate.
  • the arrangement of such a pivoting flap inside the coolant outlet channel restrains the coolant flow even in the open position of the flap and induces a useless flow resistance.
  • turbulence is generated in the coolant, in the volute and in the outlet channel, so that the pump wheel is permanently exposed to a significant resistance caused by the turbulence in the coolant. This resistance causes a useless energy consumption of the coolant pump in the idle state of the coolant pump.
  • An aspect of the present invention is to provide a mechanical coolant pump with a decreased fluidic resistance.
  • the present invention provides a mechanical coolant pump for an internal combustion engine which includes a main pump body comprising a volute housing and an outlet channel.
  • a pump wheel is arranged in the volute housing. The pump wheel is configured to pump a coolant into the outlet channel.
  • a volute tongue wall comprising a flap is configured to be axially pivotable. The volute tongue wall is configured to separate the outlet channel from a volute.
  • An outlet valve defined by the flap of the volute tongue wall in an open position forms an end of the volute tongue wall. The outlet valve is configured to control a coolant outlet flow of the mechanical coolant pump.
  • a pivot axis of the flap is arranged adjacent to the volute housing.
  • FIG. 1 shows a perspective view of a mechanical coolant pump with a valve flap in the open position
  • FIG. 2 shows a perspective view of the mechanical coolant pump with the valve flap in the closed position.
  • the mechanical coolant pump for an internal combustion engine comprises a main pump body which comprises a volute housing.
  • a pump wheel is arranged inside the volute housing, whereby the pump wheel pumps the coolant outwardly into the volute and from the volute tangentially into the outlet channel.
  • the coolant outlet flow of the pump is controlled by an outlet valve.
  • the outlet channel is separated by a volute tongue wall from the volute, so that the volute tongue wall separates the outlet channel from the volute.
  • the outlet valve of the mechanical coolant pump is defined by an axially pivotable flap being at least a part of the volute tongue wall in the open position of the flap.
  • the flap forms the end of the volute tongue wall in the circumferential direction.
  • the pivot axis of the pivotable flap is orientated axially and parallel to the rotating axis of the pump wheel.
  • the pivot axis is arranged adjacent to the volute housing over the entire length of the flap pivot axis.
  • the arrangement of the axially pivotable flap adjacent to the volute housing and at the end of the volute tongue wall avoids the flow of any coolant into the outlet channel when the flap is in the closed position because the closed flap directly closes the inlet of the outlet channel and is not arranged in the course of the outlet channel anymore.
  • the fluidic resistance for the pump wheel caused by turbulence in the coolant is significantly reduced in the closed flap position.
  • a flow of the coolant into the outlet channel and back is stopped effectively so that a coolant ring rotates in the volute.
  • the coolant ring flowing in the volute circulates in a constant and mainly undisturbed manner.
  • the energy consumption of the pump decreases significantly when the outlet valve is closed. Energy consumption during the cold start phase of the engine while the outlet valve is closed can in particular be minimized effectively.
  • the pump is also provided with a reduced flow resistance in the open position because the flap does not provide a useless flow resistance for the coolant, in contrast to a flap, which is positioned in the middle of the outlet channel and which restrains the coolant flow in the outlet channel.
  • the main pump body can, for example, be provided with at least one stopping element which stops the flap in the defined open position and/or defined closed position.
  • a stopping element holds the flap in the defined open and/or defined closed position so that the actuator which opens and closes the flap does not have to apply holding forces to the flap in the open or closed position. This is an additional means to decrease the energy consumption of the actuator moving the flap.
  • the stopping element can, for example, be a stopping nose arranged in the outlet channel wall, and the flap can be stopped by the stopping nose in the closed position.
  • a stopping nose is a simple and cost-efficient means to realize a stopping element which supports the flap in its closed position.
  • the flap can, for example, be arched and the arched flap can extend the volute in the open position of the flap.
  • the proximal side of the flap can, for example, be arched circular with an inner radius close to the outer radius of the pump wheel.
  • the arched flap extends the volute in the open position so that the coolant flow in the volute and into the outlet channel is undisturbed.
  • the undisturbed coolant flow is mainly free of turbulence so that the energy consumption of the pump decreases in the open position of the flap.
  • the stopping element can, for example, be a step in the volute housing and the arched flap can be stopped by the stopping element when the flap opens and arrives at the open position.
  • the step which can be realized in the outer wall of the volute housing or in the side wall of the outlet channel, is a simple and cost-efficient means to realize a stopping element which stops and supports the flap in an open position.
  • the flap can, for example, be driven by an actuator.
  • the flap can, for example, be driven by a pneumatic actuator.
  • the flap can also be driven by other actuators such as an electrical, a vacuum or a thermostatic actuator.
  • the pneumatic energy can be tapped at different positions at the combustion engine so that the use of a pneumatic actuator is simple and cost-efficient.
  • the actuator can, for example, position the flap in at least one intermediate position between the open position and the closed position. This makes it possible to adapt the coolant outlet flow more accurately to the coolant needs of the engine. Especially during a cold start phase of the engine, a more precise control of the coolant flow rate is helpful to shorten the warming-up phase of the engine.
  • the volute housing can, for example, be an integrated part of the main pump body. This construction allows faster and more cost-efficient production.
  • one part of the volute tongue wall is a part of the pivotable flap and the other part of the volute tongue wall is a part of the volute housing.
  • the pivotable flap should be constructed as small as possible. The bigger the flap is, the higher is the total force of the flowing coolant which causes a torque to the flap. The pivotable flap should, however, be large enough to close the outlet channel in the closing position.
  • FIG. 1 shows a mechanical coolant pump 10 for an internal combustion engine.
  • the mechanical coolant pump 10 comprises a main pump body 12 , whereby the main pump body 12 is mounted directly to the engine block by a flange 40 or can have a separate cover body which is not shown.
  • the main pump body 12 is provided with a volute housing 14 which is an integrated part of the main pump body 12 , whereby the volute housing 14 is substantially forming the volute 34 .
  • the volute housing 14 supports a rotatable pump wheel 16 which sucks the coolant axially and pumps the coolant radially outwardly into a volute channel 35 of the volute 34 .
  • the volute channel 35 is a ringlike channel which surrounds the pump wheel 16 circumferentially.
  • the pump wheel 16 is directly driven by the combustion engine by using a driving belt (not shown) which drives a driving wheel (not shown) of the coolant pump 10 .
  • the coolant flows, as a result of centrifugal forces, into the volute 34 , from the volute channel 35 through an outlet valve 20 into a subsequent outlet channel 18 and finally to an outlet opening 38 of the pump 10 .
  • the outlet valve 20 is positioned at the end of the volute channel 35 and separates the volute channel 35 from the outlet channel 18 .
  • the outlet valve 20 comprises an axially pivotable arched flap 24 .
  • the pivot axis 26 is arranged adjacent to the volute housing 14 .
  • the flap 24 is at least a part of a volute tongue wall 22 in the open position of the flap 24 and is forming the circumferential end of the volute tongue wall 22 .
  • the volute tongue wall 22 comprises a wedge-shaped part 23 which is a part of the volute housing 14 .
  • the flap 24 extends the volute 34 in the open flap position ( FIG. 1 ).
  • the flap 24 is stopped in the open position by a stopping element 28 which is a step 36 in an outer wall 39 of the volute housing 14 . More precisely, the step 36 is formed by a side wall 37 of the volute channel 35 and the outer wall 39 so that the step fold is orientated tangentially.
  • the flap 24 In the closed valve position ( FIG. 2 ), the flap 24 is stopped by a stopping element 27 which is a stopping nose 30 .
  • the stopping nose 30 is a groove in an outlet channel wall 32 .
  • the stopping groove is positioned opposite and parallel to the pivot axis 26 of the flap 24 so that the flap 24 is closable into the closing position shown in FIG. 2 .
  • the coolant rotates in the volute 34 as a coolant ring, and is circulating in a constant and mainly undisturbed manner.
  • the flap 24 is driven by an actuator (not shown), which is, for example, a pneumatical, an electrical, a vacuum or a thermostatic actuator.
  • the flap 24 can be positioned in at least one intermediate position by the actuator.
  • the intermediate position is a defined position between the open and the closed flap position, and allows the control of the coolant outlet flow more accurate and more adapt to the coolant need of the engine.

Landscapes

  • 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)
US13/579,037 2010-02-16 2010-02-16 Mechanical coolant pump Abandoned US20130011250A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2010/051918 WO2011101019A1 (fr) 2010-02-16 2010-02-16 Pompe mécanique pour réfrigérant

Publications (1)

Publication Number Publication Date
US20130011250A1 true US20130011250A1 (en) 2013-01-10

Family

ID=42938620

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/579,037 Abandoned US20130011250A1 (en) 2010-02-16 2010-02-16 Mechanical coolant pump

Country Status (6)

Country Link
US (1) US20130011250A1 (fr)
EP (1) EP2536928B1 (fr)
JP (1) JP2013519828A (fr)
CN (1) CN102844539A (fr)
MX (1) MX2012009360A (fr)
WO (1) WO2011101019A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9574485B2 (en) 2012-10-19 2017-02-21 Pierburg Pump Technology Gmbh Mechanical coolant pump
US9644524B2 (en) 2013-11-07 2017-05-09 Honda Motor Co., Ltd. Cooling water passage structure
US9689393B2 (en) 2012-02-14 2017-06-27 Pierburg Pump Technology Gmbh Mechanical coolant pump
US20190331131A1 (en) * 2016-01-22 2019-10-31 Litens Automotive Partnership Pump with variable flow diverter that forms volute
EP3245406B1 (fr) * 2015-01-16 2020-12-09 Industrie Saleri Italo S.P.A. Groupe pompe de refroidissement doté d'un moyen de réglage

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015106671A1 (de) * 2015-04-29 2016-11-03 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Pumpe
CN106368789A (zh) * 2016-11-24 2017-02-01 奇瑞汽车股份有限公司 一种柴油发动机水泵
EP3438556A1 (fr) * 2017-08-03 2019-02-06 Grundfos Holding A/S Dispositif de mélange, système de chauffage avec dispositif de mélange et procédé
JP7146540B2 (ja) * 2018-09-13 2022-10-04 株式会社山田製作所 制御バルブ

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1274678A (en) * 1917-01-29 1918-08-06 Joseph C Butler Water circulating and cooling pump.
US4544326A (en) * 1982-12-28 1985-10-01 Nissan Motor Co., Ltd. Variable-capacity radial turbine
US5408708A (en) * 1993-10-29 1995-04-25 Vico Products Manufacturing Co., Inc. Flow-control for a pump
GB2377253A (en) * 2001-07-05 2003-01-08 Ford Global Tech Inc Cooling system including a pump with a flow restriction valve

Family Cites Families (9)

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Publication number Priority date Publication date Assignee Title
JPS328383B1 (fr) * 1956-01-11 1957-09-28
JPS5126162B2 (fr) * 1972-02-17 1976-08-05
JPS58122394A (ja) * 1982-01-14 1983-07-21 Kubota Ltd うず巻ポンプ
JPS58202400A (ja) * 1982-05-21 1983-11-25 Hitachi Ltd 渦巻ポンプ
JPS62142820A (ja) * 1985-12-18 1987-06-26 Yamada Seisakusho:Kk 多列内燃機関の冷却装置
JPH04237898A (ja) * 1991-01-18 1992-08-26 Nissan Motor Co Ltd 内燃機関のウォータポンプ
JP3405610B2 (ja) * 1994-10-03 2003-05-12 住友ゴム工業株式会社 空気入りラジアルタイヤ
JP3438211B2 (ja) * 1996-08-30 2003-08-18 アイシン精機株式会社 内燃機関のウォータポンプ
TR200704048A2 (tr) * 2007-06-12 2008-09-22 Kirpart Otomoti̇v Parçalari Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇ İçten yanmalı motorlar için sıcaklığa bağlı sirkülasyon kontrollü su pompası.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1274678A (en) * 1917-01-29 1918-08-06 Joseph C Butler Water circulating and cooling pump.
US4544326A (en) * 1982-12-28 1985-10-01 Nissan Motor Co., Ltd. Variable-capacity radial turbine
US5408708A (en) * 1993-10-29 1995-04-25 Vico Products Manufacturing Co., Inc. Flow-control for a pump
GB2377253A (en) * 2001-07-05 2003-01-08 Ford Global Tech Inc Cooling system including a pump with a flow restriction valve

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9689393B2 (en) 2012-02-14 2017-06-27 Pierburg Pump Technology Gmbh Mechanical coolant pump
US9689392B2 (en) 2012-02-14 2017-06-27 Pierburg Pump Technology Gmbh Mechanical coolant pump
US9726178B2 (en) 2012-02-14 2017-08-08 Pierburg Pump Technology Gmbh Mechanical coolant pump
US9574485B2 (en) 2012-10-19 2017-02-21 Pierburg Pump Technology Gmbh Mechanical coolant pump
US9644524B2 (en) 2013-11-07 2017-05-09 Honda Motor Co., Ltd. Cooling water passage structure
EP3245406B1 (fr) * 2015-01-16 2020-12-09 Industrie Saleri Italo S.P.A. Groupe pompe de refroidissement doté d'un moyen de réglage
US20190331131A1 (en) * 2016-01-22 2019-10-31 Litens Automotive Partnership Pump with variable flow diverter that forms volute
US11105339B2 (en) * 2016-01-22 2021-08-31 Litens Automotive Partnership Pump with variable flow diverter that forms volute

Also Published As

Publication number Publication date
MX2012009360A (es) 2013-03-21
CN102844539A (zh) 2012-12-26
EP2536928B1 (fr) 2018-11-14
EP2536928A1 (fr) 2012-12-26
JP2013519828A (ja) 2013-05-30
WO2011101019A1 (fr) 2011-08-25

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Legal Events

Date Code Title Description
AS Assignment

Owner name: PIERBURG PUMP TECHNOLOGY GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:FOURNIER, ARNAUD, MR.;SIMON, GILLES, MR.;REEL/FRAME:029033/0854

Effective date: 20120828

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION