EP3500742B1 - Element d'obturation d'un logement d'une pompe a fluide caloporteur compris dans un moteur - Google Patents

Element d'obturation d'un logement d'une pompe a fluide caloporteur compris dans un moteur Download PDF

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Publication number
EP3500742B1
EP3500742B1 EP17755218.9A EP17755218A EP3500742B1 EP 3500742 B1 EP3500742 B1 EP 3500742B1 EP 17755218 A EP17755218 A EP 17755218A EP 3500742 B1 EP3500742 B1 EP 3500742B1
Authority
EP
European Patent Office
Prior art keywords
closure element
housing
pump
cylinder block
heat
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.)
Active
Application number
EP17755218.9A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3500742A1 (fr
Inventor
Michel Bartalini
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.)
Renault SAS
Nissan Motor Co Ltd
Original Assignee
Renault SAS
Nissan Motor Co Ltd
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 Renault SAS, Nissan Motor Co Ltd filed Critical Renault SAS
Publication of EP3500742A1 publication Critical patent/EP3500742A1/fr
Application granted granted Critical
Publication of EP3500742B1 publication Critical patent/EP3500742B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
    • F01P11/0204—Filling
    • F01P11/0209—Closure caps
    • 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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/0043—Arrangements of mechanical drive elements
    • 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
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F04D29/4293—Details of fluid inlet or outlet
    • 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
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/445—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps
    • 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
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
    • F04D29/588—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps cooling or heating the machine
    • 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 sealing element for a housing of a coolant pump included in a combustion engine of a vehicle, in particular in a cylinder block of said engine.
  • the invention also relates to a cylinder block comprising such a sealing element as well as an engine comprising this cylinder block.
  • the invention also relates to a vehicle, in particular a motor vehicle, comprising such an engine.
  • a heat engine usually comprises a cylinder block closed by a cylinder head.
  • the engine comprises a cooling circuit in which a heat transfer fluid is circulated by means of a pump and which, in turn, is cooled by passing through a radiator.
  • a pump is conventionally arranged in an external face of the motor, in particular on a distribution face also called an accessory face of the motor.
  • This pump comprises in particular a pulley, which drives a vane, or turbine, adapted to circulate the fluid in the cooling circuit.
  • the pump pulley is driven by a transmission belt, which generally drives other elements of the vehicle such as the alternator, the power steering pump, etc... (see US 2016/084259 A )
  • the present invention aims to overcome these drawbacks associated with the state of the art.
  • An object of the invention is to reduce the size of the engine by making the cooling circuit more compact and simple to implement.
  • the invention relates to a sealing element for a housing of a heat transfer fluid pump included in a heat engine of a vehicle, in particular in a cylinder block of said engine, the sealing element comprising a element for guiding a circulation of the heat transfer fluid towards an inlet orifice of said pump.
  • the invention also relates to a cylinder block comprising such a closure element.
  • the invention also relates to a heat engine comprising such a cylinder block.
  • the invention also relates to a vehicle, in particular a motor vehicle comprising such a heat engine.
  • FIG. 1 represents a part of a cylinder block 1 of a combustion engine of a vehicle, in particular a motor vehicle, commonly called “cylinder block” and which is capable of being capped with a cylinder head.
  • this cylinder block 1 comprises an internal circuit for the circulation of a heat transfer fluid otherwise called coolant, which is intended for example to cool the engine by allowing this fluid to circulate around the cylinders of the engine.
  • the internal circuit is formed of at least one cooling chamber and comprises an inlet which is connected via an evacuation duct 21b defined in whole or in part in the cylinder block 1, to a volute outlet 17b 20 of a pump 4 to coolant.
  • This pump 4 is capable of circulating this fluid in a cooling circuit of this engine.
  • This cylinder block 1 comprises a housing 3 in which the pump 4 is arranged.
  • This housing 3 comprises an inlet 17a connected to a supply conduit 21a for coolant fluid included in the cooling circuit.
  • This supply conduit 21a is defined in whole or in part in the cylinder block 1.
  • the inlet 17a and the outlet 17b of this housing 3 are included in the internal walls 22a, 22b of the housing 3.
  • These inlets 17a and outlet 17b of this housing 3 respectively comprise axes of symmetry A2 and A3 which are substantially perpendicular to an axis of symmetry A1 of the pump 4.
  • This axis A1 is also an axis of symmetry of a rotary device 26 of the pump 4 adapted to the circulation of the fluid in the cooling circuit and which can be a blade or else a turbine.
  • the inlet 17a of this housing 3 can be defined in the first part 7a of the shutter element 2 with an axis of symmetry A2 of this inlet 17a which coincides with the axis of symmetry A1 of this pump 4.
  • the cylinder block 1 comprises a closing element 2 which is arranged in the housing 3 in order to close this housing 3 in a leaktight and removable manner.
  • figures 1 and 2 such a closure element 2 which is preferably in one piece, is a part attached to the cylinder block 1.
  • This closure element 2 has a cross section having a circular shape. It comprises first, second and third parts 7a, 7b, 7c.
  • the first and second parts 7a, 7b each comprise first and second faces 8a, 9a, 8b, 9b.
  • the first faces 8a, 9a of the first and second parts 7a, 7b of this closure element 2 are positioned in the latter one facing the other.
  • These first and second parts 7a, 7b are interconnected at these first faces 8a, 9a by the third part 7c.
  • the first and second parts 7a, 7b of the closure element 2 are centered respectively on median planes P1, P2 parallel to each other. These median planes P1, P2 are preferably perpendicular to the axis of
  • the third part 7c comprises orifices 30 to allow the low-pressure heat transfer fluid to pass through the third part 7c and in the direction of the turbine 26 of the pump 4.
  • the first and second parts 7a, 7b separate/compartment this housing 3 into two chambers 16a, 16b: a low-pressure chamber 16a and a high-pressure chamber 16b.
  • the low-pressure chamber 16a is included between the first faces 8a, 9a of the first and second parts 7a, 7b, and is defined in the continuity of the supply conduit 21a of coolant fluid.
  • the high-pressure chamber 16b is for its part comprised between the second face 9b of the second part 7b and a bottom wall 23 of the housing 3, and is defined in the continuity of the evacuation duct 21b of heat transfer fluid.
  • the first face 8a of the first part 7a of this closure element 2 comprises a guide element 5 for the heat transfer fluid which circulates in the housing 3 coming from the supply conduit 21a.
  • the second face 8b of this first part 7a forms a cavity participating in the improvement of the grip comfort of this closure element 2 for its arrangement in the housing 3 and a reduction in the weight of this closure element 2.
  • This second face 8b also comprises at least one fixing zone 15 making it possible to mechanically connect the closure element 2 to an external face 24 of the cylinder block 1 by screwing, clipping or even interlocking.
  • Each attachment zone 15 is preferably included at the level of an edge 25 defining a perimeter of this second face 8b.
  • the second part 7b of the closure element 2 comprises an opening 12.
  • This opening 12 is defined to receive a part of the pump 4 provided with an inlet 6 of the heat transfer fluid.
  • This part of the pump 4 comprises a supply inlet zone 28 of a casing 18 of the pump 4 in which the rotary device 26 is arranged.
  • this opening 12 comprises a wall 13 comprising a guide zone 14 of the inlet zone 28 provided with this inlet orifice 6 intended to allow the pump 4 to be supplied with fluid.
  • the inlet zone 28 of this casing 18 has a circular cross-section having a diameter adjusted to that defined by the guide zone 14 of the opening 12 in order to ensure reduced clearance to promote the passage of the heat transfer fluid through the entry zone 28, while allowing the rotary device 26 to rotate in the guide zone 14.
  • This envelope 18 of the pump 4 is arranged in the high-pressure chamber 16b of the housing 3. It comprises orifices 29 through which the pressurized heat transfer fluid is evacuated following its passage through the rotary device 26 of the pump 4. This heat transfer fluid under pressure is discharged into the part of the pressure chamber 16b forming the volute of the pump 4, also called the receiving chamber of the pump 4.
  • the rotary device 26 is mounted on one end of a pump shaft 19 connected to a pump body (not shown).
  • the first and second parts 7a, 7b of the closure element 2 each comprise at least one sealing element 10a, 10b.
  • These two parts 7a, 7b comprise peripheral walls 11a, 11b at the level of which the sealing elements 10a, 10b project.
  • the peripheral wall 11a, 11b of each first and second part 7a, 7b comprises a groove in which the sealing element 10a, 10b is arranged.
  • This sealing element 10a, 10b is preferably an O-ring seal.
  • the sealing elements 10a 10b cooperate with the internal walls 22a, 22b of the housing 3 so as to achieve a hermetic connection.
  • the sealing elements 10a, 10b participate in sealing in the housing 3 the low-pressure and high-pressure chambers 16a, 16b.
  • these internal walls 22a, 22b are defined in the housing 3 according to a staging which is necessary for the assembly of the O-rings 10a, 10b.
  • the guide element 5 is defined on all or part of the first face 8a so as to direct the heat transfer fluid towards the inlet orifice 6 of the pump 4 and therefore towards of the axis of the rotary device 26.
  • This guide element 5 comprises a protrusion on the first face 8a of the first part 7a of the closure element 2.
  • This protrusion preferably has an essentially pyramidal or conical shape. Under these conditions, the protrusion has a vertex 27 which extends in a direction perpendicular to the median plane P1 of the first part 7a and this, towards the inlet orifice 6 of the pump 4 and therefore towards the axis of the rotary device 26.
  • This guide element 5 comprises an axis of symmetry A4 which passes through its top 27 and which coincides with the axes of symmetry A1, A5 respectively of the pump 4 and of the opening 12 of the second part 7b of the shutter element 2.
  • the heat transfer fluid circulates in the housing in the direction of the arrows shown on the figure 1 . More precisely, the heat transfer fluid coming from the supply conduit 21a enters the low-pressure chamber 16a towards the guide element 5 in a radial direction with respect to the axes of symmetry A1, A4, A5 of the pump 4, of the guide element 5 and the opening 12 of the second part 7b. This heat transfer fluid is then directed by the guide element 5 towards the inlet 6 of the pump 4 and therefore towards the axis of the rotary device 26 in an axial direction with respect to the axes of symmetry A1, A4, A5 .
  • the fluid By penetrating into the pump 4 and therefore into the casing 18 comprising the rotary device 26, the fluid is compressed in order to be evacuated under pressure in the pump volute 4 defined in a part of the high-pressure chamber 16b and this in a radial direction with respect to the axes of symmetry A1, A4, A5 to then be conveyed in the internal circuit which is intended for example to cool the engine by allowing a circulation of this fluid around the cylinders of the engine and this, through the evacuation duct 21b.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Electromagnetic Pumps, Or The Like (AREA)
  • Details Of Reciprocating Pumps (AREA)
EP17755218.9A 2016-08-16 2017-08-03 Element d'obturation d'un logement d'une pompe a fluide caloporteur compris dans un moteur Active EP3500742B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1657776A FR3055151B1 (fr) 2016-08-16 2016-08-16 Element d'obturation d'un logement d'une pompe a fluide caloporteur compris dans un moteur
PCT/FR2017/052184 WO2018033670A1 (fr) 2016-08-16 2017-08-03 Element d'obturation d'un logement d'une pompe a fluide caloporteur compris dans un moteur

Publications (2)

Publication Number Publication Date
EP3500742A1 EP3500742A1 (fr) 2019-06-26
EP3500742B1 true EP3500742B1 (fr) 2023-05-31

Family

ID=57860944

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17755218.9A Active EP3500742B1 (fr) 2016-08-16 2017-08-03 Element d'obturation d'un logement d'une pompe a fluide caloporteur compris dans un moteur

Country Status (7)

Country Link
US (1) US10890099B2 (ko)
EP (1) EP3500742B1 (ko)
JP (1) JP7060580B2 (ko)
KR (1) KR102402054B1 (ko)
CN (1) CN109790772B (ko)
FR (1) FR3055151B1 (ko)
WO (1) WO2018033670A1 (ko)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3093135B1 (fr) * 2019-02-26 2022-07-08 Renault Sas Moteur thermique comprenant une pompe à fluide caloporteur
FR3093758B1 (fr) * 2019-03-12 2021-02-19 Renault Sas "Bloc-cylindres intégrant une conduite de transit de fluide caloporteur séparée d'une chambre d'eau"

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0547492U (ja) * 1991-11-22 1993-06-25 株式会社ユニシアジェックス ウォーターポンプ
US6887046B2 (en) * 1996-02-26 2005-05-03 Flowork Systems Ii Llc Coolant pump, mainly for automotive use
JPH11117742A (ja) * 1997-10-21 1999-04-27 Nissan Diesel Motor Co Ltd エンジンの水冷装置におけるバイパス通路構造
JP2003003847A (ja) * 2001-06-20 2003-01-08 Honda Motor Co Ltd エンジン冷却系の気液分離装置
US6843209B2 (en) * 2001-06-20 2005-01-18 Honda Giken Kogyo Kabushiki Kaisha Engine cooling water passage structure and gas/liquid separator for engine cooling system
JP2003269165A (ja) * 2002-03-15 2003-09-25 Aisin Seiki Co Ltd ウォータポンプ
JP2005146981A (ja) * 2003-11-14 2005-06-09 Kawamoto Pump Mfg Co Ltd ラインポンプ
CN201486640U (zh) * 2009-06-08 2010-05-26 奇瑞汽车股份有限公司 一种新型结构的水泵壳体
JP4883165B2 (ja) * 2009-10-20 2012-02-22 トヨタ自動車株式会社 ポンプ装置
WO2014187466A1 (en) * 2013-05-23 2014-11-27 Rheinisch-Westfälische Technische Hochschule Aachen Impeller of a centrifugal pump apparatus
US10001131B2 (en) * 2014-09-24 2018-06-19 Aisin Seiki Kabushiki Kaisha Water pump
AT517125B1 (de) * 2015-05-07 2019-07-15 Avl List Gmbh Kühlmittelpumpe für eine brennkraftmaschine

Also Published As

Publication number Publication date
CN109790772A (zh) 2019-05-21
FR3055151A1 (fr) 2018-02-23
EP3500742A1 (fr) 2019-06-26
US10890099B2 (en) 2021-01-12
FR3055151B1 (fr) 2019-07-19
CN109790772B (zh) 2022-08-16
US20200182126A1 (en) 2020-06-11
WO2018033670A1 (fr) 2018-02-22
KR102402054B1 (ko) 2022-05-25
KR20190034677A (ko) 2019-04-02
JP7060580B2 (ja) 2022-04-26
JP2019531432A (ja) 2019-10-31

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