EP2450547B1 - Pompe à eau pour un moteur à combustion interne - Google Patents

Pompe à eau pour un moteur à combustion interne Download PDF

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Publication number
EP2450547B1
EP2450547B1 EP11008643.6A EP11008643A EP2450547B1 EP 2450547 B1 EP2450547 B1 EP 2450547B1 EP 11008643 A EP11008643 A EP 11008643A EP 2450547 B1 EP2450547 B1 EP 2450547B1
Authority
EP
European Patent Office
Prior art keywords
water pump
rotor
caracterized
pump according
drum
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.)
Not-in-force
Application number
EP11008643.6A
Other languages
German (de)
English (en)
Other versions
EP2450547A3 (fr
EP2450547A2 (fr
Inventor
Michael Aschaber
Wolfgang Gruber
Josef Wagner
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.)
Steyr Motors GmbH
Original Assignee
Steyr Motors 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 Steyr Motors GmbH filed Critical Steyr Motors GmbH
Publication of EP2450547A2 publication Critical patent/EP2450547A2/fr
Publication of EP2450547A3 publication Critical patent/EP2450547A3/fr
Application granted granted Critical
Publication of EP2450547B1 publication Critical patent/EP2450547B1/fr
Not-in-force 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
    • F01P5/12—Pump-driving arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C5/00—Rotary-piston machines or pumps with the working-chamber walls at least partly resiliently deformable
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
    • F02B67/04—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus
    • F02B67/06—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus driven by means of chains, belts, or like endless members

Definitions

  • the invention relates to water pumps, essentially consisting of a housing, a rotor shaft with pump rotor and connected to the shaft pulley for driving the pump by means of a V-belt or a toothed belt.
  • the drive of such pumps usually takes place by means of a wedge, flat or toothed belt.
  • the driving pulley is usually located on the crankshaft of an internal combustion engine. Often, the same belt drives multiple units.
  • a toothed belt By means of a toothed belt, a camshaft is also driven. In this case, not only the correct belt tension is to be maintained, but also the synchronism between crankshaft and camshaft. This namely determines the closing times of the gas exchange valves.
  • the FR 2.230.225 discloses a pump for an internal combustion engine whose housing rests with its open, the rotor receiving, pumping space on the cylinder block and the bottom of which is penetrated by the rotor shaft, wherein the pulley connected to the rotor shaft is mounted on a surrounding a flange of the housing bottom roller bearing. For maintenance or repair work, the drive belt must be removed and the entire pump disconnected from the engine block.
  • JPS5784331 discloses a pump having a housing, a rotor shaft with pumping rotor and a shaft connected to the pulley for driving the pump by means of a drive belt wherein: the housing is formed of a drum having a bottom, and on the side facing away from the bottom has an open edge in that a lid with a bore for the passage of the rotor shaft is inserted on the open side of the drum facing away from the bottom, wherein the rotor shaft passes through the lid.
  • the housing forms a pump rotor receiving space whose cylindrical wall ends without constriction. As a result, the pump rotor can be pulled out of the housing to the open side.
  • the at the bottom facing away from the open side of the housing used also extendable lid with a hole for the passage of the rotor shaft is only the sealing of the room.
  • a bearing On the outer periphery of the drum forming the housing sits a bearing on which a wholly arranged outside the wall pulley ring is mounted.
  • the bearing does not hinder the extraction of the rotor.
  • the large diameter of the bearing and its small axial distance from the pump rotor ensures the precise guidance of the rotor, although it is only stored in a single bearing.
  • a coupling disc is screwed to the pulley ring rotatably and removably.
  • the dome disk in turn is rotatably connected to the rotor shaft or even with it in one piece.
  • the rotor shaft passes through the lid from the outside and protrudes into the pump room, in which it carries the rotor.
  • the latter together with the rotor shaft, the rotor and the cover, can be pulled out of the housing after the screw connection between the pulley ring and the coupling disk has been loosened.
  • the housing is either attached to an engine block of an internal combustion engine (claim 2) or it is in the engine block or a part thereof itself formed (claim 3).
  • claim 2 an engine block of an internal combustion engine
  • claim 3 the housing is either attached to an engine block of an internal combustion engine (claim 2) or it is in the engine block or a part thereof itself formed (claim 3).
  • the latter is a particularly cost-effective solution because no own pump housing is needed.
  • the overall length of the internal combustion engine can be shorter.
  • the cylindrical wall in the region of its edge facing away from the bottom has an outer shoulder and an inner Shoulder (claim 4). So are the bearing - a rolling bearing, preferably a ball bearing - and the lid accurately positioned. The same purpose is also an axial securing of the bearing and the lid by inserted into corresponding grooves of the cylindrical wall spring rings (claim 5). The spring rings or other securing means are accessible from the outside through openings in the dome disc (claim 6).
  • the sealing of the pump chamber is preferably carried out by seals in the lid, namely at its outer edge by a first sealing ring and in the bore by a second sealing ring for sealing to the rotor shaft (claim 7). Because when dismantling the pump, the cover is pulled out of the housing together with the pump shaft and the coupling disk, the second sealing ring arranged in this way, usually a sensitive lip sealing ring, can not be damaged.
  • the first sealing ring may be a simple O-ring, because there is no relative movement.
  • the invention is suitable for pumps of various types: centrifugal pumps, side channel pumps, vane pumps.
  • centrifugal pumps the inlet opens centrally in the bottom of the housing, in the two other types open inlet and outlet in a suitable manner.
  • the selection of the type of construction depends, inter alia, on whether it should promote pure cooling water, or whether it should promote dirty raw water from the environment (for example when using the internal combustion engine as a marine engine) for heat exchange with the closed engine cooling circuit.
  • the pump rotor in a preferred embodiment of the pump rotor is an impeller with elastically flexible wings whose axis is arranged eccentrically with respect to the circular cylindrical wall (claim 8).
  • the flexible wings of the pump rotor from their outer Edge inwardly extending recesses (claim 9). This allows larger contaminants to pass through the pump motor without damaging it.
  • Fig. 1 and especially in Fig. 2 is the engine block of an internal combustion engine with 1 and the water pump according to the invention summarily denoted by 2.
  • a channel 3 is indicated, for example, in the event that the water pump operates the engine cooling circuit directly.
  • the water pump 2 essentially comprises a housing 5 and a rotor 6.
  • the rotor is seated non-rotatably on a rotor shaft 7 with the axis 9.
  • the housing 5 is fastened to the engine block 1 by means of threaded bolts 13. It could also be made in one piece with the engine block 1.
  • the housing 5 has the shape of a drum 10 with a bottom 11 on the side facing the engine block 1 and ends on the side facing away from it with an open edge 12 whose smallest diameter is larger than the largest diameter of the rotor 6.
  • the drum has on its outer side an outer shoulder 15 and on its inner wall an inner shoulder 16.
  • the drum 10 is closed by a lid 14 which is positioned by engagement with the inner shoulder 16 and by a spreader 17 is secured.
  • the cover 14 has a bore 20 with a lip sealing ring 19 for the passage of the rotor shaft. 7
  • the water pump 2 is here a rotary vane pump and the housing forms a cylindrical inner wall, a connecting piece 8 is in Fig. 1 to see. But it could also be a pump of other operation, such as a centrifugal pump. Then the bottom 11 would have an inlet opening and the drum would be in the form of a screw.
  • a coupling plate 30 is provided for driving connection between the pulley ring 26 and the rotor shaft 7. It is detachably connected at its outer edge 28 by a number of bolts 31 with the pulley ring 26 and rotatably connected with its hub 32 with the rotor shaft 7.
  • the outer edge of the dome disc 30 is located on an axially normal mating surface 34 of the pulley collar 26 and with the surface 24th on the outer ring of the bearing.
  • the dome disk 30 between its outer edge and the hub 32 a number of openings through which the spreader 17 is accessible from the outside.
  • the expansion ring 17 is pulled by approaching its ends from its groove and the bolts 31 are released. And already the dome disk 30 can be pulled out of the housing 5 together with the rotor 6 and the cover 14. Of this, the pulley ring 26 is not affected, he remains unchanged on his camp.
  • Fig. 3 is as an addition to Fig. 2 to see a preferred embodiment of the water pump in cross section.
  • the rotor 6 is arranged eccentrically (axis 7).
  • the rotor 6 has a number of circumferentially distributed elastic wings 41, or it is made entirely of an elastic material.
  • the direction of rotation of the rotor 6 is indicated by the arrow 42.
  • the detail of Fig. 4 shows that the elastic wings 41 have outgoing recesses from their outer ends. They allow the passage of solid particles without damaging the wings 41.

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)

Claims (9)

  1. Pompe à eau comprenant essentiellement un boitier (5), un arbre de rotor (7) avec un rotor de pompe (6) et une poulie reliée à l'arbre de rotor (7) destinée à l'entrainement de la pompe moyennant une courroie, dans laquelle
    a) Le boitier (5) est composé d'un tambour (10) comportant un fond (11) et une bordure ouverte (12) sur le coté opposé au fond (11),
    b) Un couvercle (14) avec un alésage (20) destiné au passage de l'arbre de rotor (7) est appliqué au coté ouvert du tambour (10) opposé au fond (11),
    c) Un palier (22) est monté sur la circonférence du tambour (10) lequel palier supporte en rotation une couronne de poulie (26),
    d) Un disque coupleur (30) est relié á la couronne de poulie (26) de façon amovible, et est relié en rotation avec oubien solidaire avec l'arbre de rotor (6).
  2. Pompe selon la revendication 1, caractérisée en ce que le boitier (5) est relié par vissage au carter (1) d'un moteur à combustion oubien est une partie de celui-ci.
  3. Pompe selon la revendication 1, caractérisée en ce que le boitier (5) est solidaire avec le carter (1) du moteur oubien ave une partie de celui-ci.
  4. Pompe selon la revendication 1, caractérisée en ce que le tambour (10) présente dans la région de sa bordure (12) un épaulement extérieur (15) et un épaulement intérieur (16), le premier (15) destiné au positionnement du palier (22) et le second (16) destiné au positionnement du couvercle (14).
  5. Pompe selon la revendication 1, caractérisée en ce que le palier (22) et le couvercle (14) sont bloqués en direction axiale par des rondelles-ressort (17,25).
  6. Pompe selon la revendication 1, caractérisée en ce que le disque coupleur (30) présente des lumières (33).
  7. Pompe selon la revendication 1, caractérisée en ce que le couvercle (14) reçoit à sa bordure extérieur une première bague d'étanchéité (18) et dans l'alésage (20) une seconde bague d'étanchéité (19).
  8. Pompe selon la revendication 1, caractérisée en ce que le rotor de pompe (6) est une roue à ailettes comportant des ailettes flexibles élastiques , dont l'axe (9) est disposé excentrique par rapport à la paroi intérieure cylindrique du tambour (10).
  9. Pompe selon la revendication 8, caractérisée en ce que les ailettes flexibles (41) du rotor de pompe (6) sont pourvues d'évidements dirigés vers l'intérieur à partir de leur arrête extérieure (44).
EP11008643.6A 2010-11-09 2011-10-28 Pompe à eau pour un moteur à combustion interne Not-in-force EP2450547B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0068310U AT12267U1 (de) 2010-11-09 2010-11-09 Wasserpumpe für eine verbrennungskraftmaschine

Publications (3)

Publication Number Publication Date
EP2450547A2 EP2450547A2 (fr) 2012-05-09
EP2450547A3 EP2450547A3 (fr) 2016-11-09
EP2450547B1 true EP2450547B1 (fr) 2017-08-30

Family

ID=45217921

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11008643.6A Not-in-force EP2450547B1 (fr) 2010-11-09 2011-10-28 Pompe à eau pour un moteur à combustion interne

Country Status (2)

Country Link
EP (1) EP2450547B1 (fr)
AT (1) AT12267U1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4053413A1 (fr) * 2021-03-04 2022-09-07 Volvo Car Corporation Pompe montée sur vilebrequin

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2230225A5 (fr) 1973-05-14 1974-12-13 Peugeot & Renault
GB1461901A (en) * 1975-06-23 1977-01-19 Skf Uk Ltd Water pumps for internal combustion engines
JPS5784331U (fr) * 1980-11-13 1982-05-25
DE60128631T2 (de) * 2000-09-19 2008-02-07 Aisin Seiki K.K., Kariya Wasserpumpe
JP2004052723A (ja) 2002-07-23 2004-02-19 Aisin Seiki Co Ltd ウォーターポンプ

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP2450547A3 (fr) 2016-11-09
AT12267U1 (de) 2012-02-15
EP2450547A2 (fr) 2012-05-09

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