EP0713973B1 - Pompe à huile - Google Patents

Pompe à huile Download PDF

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Publication number
EP0713973B1
EP0713973B1 EP95117994A EP95117994A EP0713973B1 EP 0713973 B1 EP0713973 B1 EP 0713973B1 EP 95117994 A EP95117994 A EP 95117994A EP 95117994 A EP95117994 A EP 95117994A EP 0713973 B1 EP0713973 B1 EP 0713973B1
Authority
EP
European Patent Office
Prior art keywords
lubricant
pump
external rotor
drive gear
set forth
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.)
Expired - Lifetime
Application number
EP95117994A
Other languages
German (de)
English (en)
Other versions
EP0713973A1 (fr
Inventor
Kurt Hoffmann
Franz Maucher
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.)
Schwaebische Huettenwerke Automotive GmbH
Original Assignee
Schwaebische Huettenwerke Automotive 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 Schwaebische Huettenwerke Automotive GmbH filed Critical Schwaebische Huettenwerke Automotive GmbH
Publication of EP0713973A1 publication Critical patent/EP0713973A1/fr
Application granted granted Critical
Publication of EP0713973B1 publication Critical patent/EP0713973B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/102—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member the two members rotating simultaneously around their respective axes

Definitions

  • the invention relates to a lubricant pump driven on the outer rotor that described in the preamble of claim 1 Genus.
  • Such lubricant pumps are known and generally contain a housing that facilities as a fixed component for lubricant supply and removal and together with a cover that is placed on the side of a drive wheel the pump closes on all sides to the outside.
  • Such pumps disadvantageously have because of the aforementioned Construction of the metallic housing a relatively high weight that is aimed at with today Hardly agree on lightweight construction for motor vehicles leaves.
  • Another disadvantage is that of generic pumps the fact that it is often unavoidable that rotating components of the pump must be stored in the housing, which causes friction and thus energy or fuel consumption increase.
  • German Offenlegungsschrift No. 32 43 067 A1 an internal rotor gear oil pump for automotive internal combustion engines known which is a heavy one, the two rotors completely enclosing housing.
  • German patent application DE 41 23 190 A1 describes a pump driven on the outer rotor, which is in a drive wheel or arranged in a deflection roller of the internal combustion engine is; the outer rotor is from the drive wheel or the pulley driven. Again shows up with the one described here Pump the disadvantage that the outer rotor is completely off the drive wheel is surrounded, by means of a circumferential seal on a fixed part is stored, a construction, which in turn high weight and great friction losses.
  • the outer rotor forms the lubricant pump according to the invention together with the drive wheel the outer end of the part of the lubricant pump on the pump side.
  • This construction makes the formation of a pump completely surrounding housing or one housing the outer rotor cup-shaped drive wheel unnecessary because the outer rotor, which is firmly connected to the drive wheel, the pump itself limited to the outside and thus in an essential property takes over the function of the housing itself.
  • the drive wheel advantageously only has to be as large and be designed so that it is together with the outer rotor forms a tight outer seal of the pump, which is a noticeable
  • the pump saves weight.
  • the generic pump can be sealed to the outside be reduced to a lubricant guide part that is sliding seals with the outer rotor, which in turn causes weight can be saved.
  • Friction occurs in the lubricant pump according to the invention no longer between the drive wheel and a stationary one Part of the pump, but, as far as the outer rotor is concerned, only on its sliding surface on the lubricant guide part.
  • the loose mounting of the inner rotor on a collar of the carrier section causes between the drive wheel and the inner rotor the friction to the value that arises at differential speed, can be reduced.
  • Lubricant pump can drive wheel and outer rotor be formed in one piece. But there is also the possibility to form the drive wheel and the outer rotor in two parts and to connect them with each other in a frictional or positive manner. Here can the outer rotor in a press fit with its outer surface in one Internal shoulder of the drive wheel are stored. Furthermore, one Welded connection as well as pin or bolt connections between Drive wheel and outer rotor conceivable.
  • connection of the outer rotor to the outer wall of the lubricant guide part can advantageously be realized by this be that the outer rotor facing away from the drive wheel End face on the end face facing the drive wheel bears on the outer wall of the lubricant guide part and thus both the lubricant supply space and the Lubricant discharge space slidably seals to the outside.
  • the Friction between the end faces can be done by appropriate training of the surfaces are kept low, the tightness sufficient on these surfaces for pumps, e.g. in a Oil pan are arranged.
  • a pressure relief valve on the lubricant guide part of the invention Pump can malfunction due to excessive pressure avoid.
  • the drive wheel can in a preferred embodiment by means of a fastening screw on which the drive wheel in Support section supporting shaft be centered, which is a represents easily removable overall bracket of the pump, when the wave turns on, as will be preferred the side of the carrier part facing away from the drive wheel on the latter supports.
  • the shaft which is preferred on two outer treads is slidably mounted in the carrier part, by means of the configuration and the axial dimensions of these offset plain bearings the axial play of the pump part. For fine or readjustment disks can also be used.
  • the lubricant pump according to the present invention can as usual from a metallic material, especially aluminum be constructed.
  • the extremely low friction that occurs when the invention is used designed lubricant pump preferably allows also build up the lubricant guide part a plastic, especially a thermoplastic.
  • the pump part made of a plastic, in particular a thermoset.
  • the further weight reduction is advantageous here Lubricant pump and the possibility of using the outer rotor the drive wheel in one piece made of plastic to be able to manufacture.
  • the only figure shows one arranged in an oil pan 40 Design of a lubricant pump according to the invention a lubricant guide part 10 and a pump part 20.
  • Die Pump pumps lubricant through an intake 11 into a Lubricant supply chamber 12 and by means of the rotor set 22, 23 into a lubricant discharge chamber 16 and from there via an outlet connection 14 to the place of use.
  • the stationary lubricant guide part 10 essentially has a support portion 13 and the outer end forming outer wall 12. In the lower part of the lubricant guide part 10 is between the outer wall 12 and the support section 13 a lubricant supply space 15 is formed in which the lubricant is sucked in through the intake port 11 becomes.
  • a lubricant discharge space 16 essentially radially opposite the lubricant supply space 15 lies, a lubricant discharge space 16, also bounded by the outer wall 12 and the support section 13. Out the lubricant discharge space 16 becomes the pressurized Lubricant is pumped out into the outlet port 14.
  • the carrier section 13 has a central bore through inserted a shaft 30 (from the right in the drawing) can be until a final paragraph 32 of the shaft 30 on the support portion 13 is present.
  • the shaft 30 has two offset sliding seats with which they are in the central bore of the beam section 13 is centered.
  • Shaft 30 is again in a short axial length Diameter offset.
  • a drive wheel provided with a central bore 21 are placed after the inner rotor 23 loosely on a drive wheel side collar of the support portion 13, the forms his depository, was set up.
  • the outer rotor 22 is attached. This attachment can, for example, as shown in the figure, by means of a press fit, but also by other friction or positive connection methods.
  • the axial play of the rotor set 22, 23 can with this construction through a suitable choice of the axial lengths of the shaft shoulders can be set.
  • a circulation seal 24 is used, which on the feed side serves to prevent that between the clashes Face air into the lubricant supply space 15 is sucked in.
  • the circulation seal prevents discharge 24 the leakage of the pressure on this side standing lubricant.
  • the inner rotor 23 has one tooth less on the outside than that internal toothing of the outer rotor 22, and in the rotation of the Drive wheel 21 is so on the usual gear pump technology creates a negative pressure in the lubricant supply space 15, whereby Lubricant is sucked into the intake manifold 11 becomes.
  • This lubricant is under pressure at Rolling process of inner and outer rotor 23, 22 in the lubricant discharge space 16 pumped out of it via the outlet port 14 can be delivered to its destination.
  • a pressure relief valve 18 protects the pump from excessive internal pressures and can e.g. destruction of the seal 24 counteract.
  • the lubricant guide part 10 and the pump part 20 are metallic materials, in particular Suitable for aluminum.
  • the lubricant guide part 10 made of a plastic, especially a thermoplastic such as PA 4.6, PPS or PA 6.6 GF 30 to train.
  • the pump part 20 can also be made of a plastic, in particular a thermoset.
  • preferred Materials for this come, for example, from RX 655. Vyncolit or Ridurit from the Ringsdorf company in question.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)

Claims (8)

  1. Pompe à lubrifiant entraínée sur le rotor extérieur comportant
    a)une partie de guidage de lubrifiant avec
    a1) une tubulure d'admission (11),
    a2) une paroi extérieure (12),
    a3) une portion de support (13),
    a4) une tubulure d'évacuation (14),
    a5) une chambre d'arrivée de lubrifiant (15), située entre la portion de support (13) et la paroi extérieure (12), reliée à la tubulure d'admission (11), et
    a6) une chambre d'évacuation de lubrifiant (16), située entre la portion de support (13) et la paroi extérieure (12), reliée à la tubulure d'évacuation (16), et
    b) une partie de pompage (20) avec
    b1) une roue d'entraínement (21),
    b2) un rotor extérieur (22) à denture intérieure et
    b3) un rotor intérieur (23) à denture extérieure, qui possède une dent de moins que le rotor extérieur (22),
    le rotor extérieur (22) et le rotor intérieur (23) pompant le lubrifiant, pendant le roulement, de la chambre d'arrivée de lubrifiant (15) dans la chambre d'évacuation de lubrifiant (16), et
    c) un arbre (30) soutenant la roue d'entraínement (21) dans la portion de support (13)
    caractérisée par les caractéristiques suivantes:
    d) la roue d'entraínement (21) est solidaire du rotor extérieur (22),
    e) la roue d'entraínement (21) forme avec le rotor extérieur (22) la fermeture extérieure, côté partie de pompage, de la pompe à lubrifiant,
    f) le rotor extérieur (21) délimite la pompe elle-même vers l'extérieur et assure ce faisant la fonction d'un carter,
    g) le rotor extérieur s'applique, avec sa face frontale tournée à l'opposé de la roue d'entraínement (21), contre la face frontale, tournée vers la roue d'entraínement, de la paroi extérieure (12) de la partie de guidage de lubrifiant et rend ainsi étanche aussi bien la chambre d'arrivée de lubrifiant (15) que la chambre d'évacuation de lubrifiant (16), par glissement,
    h) le rotor intérieur (22) est monté librement sur un épaulement (17) de la portion de support (13).
  2. Pompe à lubrifiant selon la revendication 1, caractérisée en ce que la roue d'entraínement (21) et le rotor extérieur (22) sont en une partie.
  3. Pompe à lubrifiant selon la revendication 1, caractérisée en ce que la roue d'entraínement (21) et le rotor extérieur (22) sont en deux parties et sont assemblés fixement entre eux, par friction ou par concordance de forme.
  4. Pompe à lubrifiant selon l'une des revendications 1 à 3, caractérisée en ce qu'une garniture d'étanchéité (24) périphérique est placée entre les faces frontales du rotor extérieur (22) et de la paroi extérieure (12).
  5. Pompe à lubrifiant selon l'une des revendications 1 à 4, caractérisée en ce qu'une soupape de surpression(18) est montée sur la parie de guidage de lubrifiant.
  6. Pompe à lubrifiant selon l'une des revendications 1 à 5, caractérisée en ce que la roue d'entraínement est centrée sur l'arbre, au moyen d'une vis de fixation (31).
  7. Pompe à lubrifiant selon l'une des revendications 1 à 6, caractérisée en ce que la partie de guidage de lubrifiant (10) et la partie de pompage (20) sont construites dans un matériau métallique, en particulier en aluminium.
  8. Pompe à lubrifiant selon l'une des revendications 1 à 6, caractérisée en ce que la partie de guidage de lubrifiant (10) est construite dans une matière plastique, en particulier une matière thermo-plastique telle que du PA 4.6, du PPS ou du PA 6.6 GF 30 et/ou la partie de pompage (20) est construite dans une matière plastique, en particulier une matière thermodurcissable telle que du RX655 (société Vyncolit)/ou du Ridurit V 1017 (société Ringsdorf).
EP95117994A 1994-11-22 1995-11-15 Pompe à huile Expired - Lifetime EP0713973B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4441522 1994-11-22
DE4441522A DE4441522A1 (de) 1994-11-22 1994-11-22 Schmiermittelpumpe

Publications (2)

Publication Number Publication Date
EP0713973A1 EP0713973A1 (fr) 1996-05-29
EP0713973B1 true EP0713973B1 (fr) 1998-05-27

Family

ID=6533848

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95117994A Expired - Lifetime EP0713973B1 (fr) 1994-11-22 1995-11-15 Pompe à huile

Country Status (4)

Country Link
US (1) US5823750A (fr)
EP (1) EP0713973B1 (fr)
JP (1) JP3643156B2 (fr)
DE (2) DE4441522A1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7137789B2 (en) * 1997-07-18 2006-11-21 Rpm Industries, Inc. Vent for reducing seal pressure in pump assembly
US6461118B1 (en) * 1997-07-18 2002-10-08 Rpm Industries, Inc. Oil pump by-pass valve for an internal combustion engine
US7150286B2 (en) * 1997-10-30 2006-12-19 Rpm Industries, Inc. Methods and systems for performing, monitoring and analyzing multiple machine fluid processes
US6988506B1 (en) 1997-10-30 2006-01-24 Rpm Industries, Inc. Fluid transfer system
US6708710B1 (en) * 1997-10-30 2004-03-23 Rpm Industries, Inc. Vehicle fluid change apparatus and method
US9062575B2 (en) * 1997-10-30 2015-06-23 RPM Industries, LLC Methods and systems for performing, monitoring and analyzing multiple machine fluid processes
US6853954B2 (en) * 2002-09-24 2005-02-08 John K. Apostolides Methods and systems for collecting and processing data in association with machine operation and maintenance
DE102004048138A1 (de) * 2004-07-14 2006-02-02 Daimlerchrysler Ag Ölfördersystem für eine Brennkraftmaschine
DE102005030251B4 (de) * 2005-06-29 2017-03-23 Bayerische Motoren Werke Aktiengesellschaft Zahnradpumpe, insbesondere Zahnradölpumpe für Fahrzeuge
DE102006006555B4 (de) * 2006-02-13 2008-03-06 Siemens Ag Hochdruckpumpe
DE102006008757A1 (de) * 2006-02-24 2007-08-30 Daimlerchrysler Ag Förderpumpe in einem Kraftfahrzeug
US20160223068A1 (en) * 2015-02-02 2016-08-04 Caterpillar Inc. Modularized Idler Shaft
CN105387324A (zh) * 2015-12-14 2016-03-09 中国航空工业集团公司金城南京机电液压工程研究中心 一种供油装置
CN107339595A (zh) * 2017-07-25 2017-11-10 力帆实业(集团)股份有限公司 摩托车发动机机油泵总成
CN107725208B (zh) * 2017-09-22 2024-02-27 力帆实业(集团)股份有限公司 摩托车水冷发动机

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2792788A (en) * 1957-05-21 eames
US3407741A (en) * 1966-09-15 1968-10-29 Caterpillar Tractor Co Compact oil pump for internal combustion engines
US4185717A (en) * 1978-05-08 1980-01-29 General Motors Corporation Engine lubricating oil pump
DE3026222A1 (de) * 1980-07-10 1982-02-04 Siegfried Alexander Dipl.-Ing. 7960 Aulendorf Eisenmann Zahnringpumpe
JPS57183583A (en) * 1981-05-08 1982-11-11 Suzuki Motor Co Ltd Trochoid pump
DE3243067A1 (de) 1982-11-22 1984-05-24 Schwäbische Hüttenwerke GmbH, 7080 Aalen Innenlaeuferzahnradoelpumpe fuer kraftfahrzeugverbrennungsmotoren
DE3603773A1 (de) 1986-01-03 1987-07-09 Schwaebische Huettenwerke Gmbh Zahnradmaschine
GB8822696D0 (en) * 1988-09-28 1988-11-02 Concentric Pumps Ltd Improvements relating to gerotor pumps
ES2070429T3 (es) * 1990-05-12 1995-06-01 Concentric Pumps Ltd Bombas de gerrotor.
DE4123190A1 (de) 1991-06-07 1992-12-10 Schwaebische Huettenwerke Gmbh Zahnradpumpe fuer oel fuer einen verbrennungsmotor, insbesondere fuer kraftfahrzeuge
DE4214752C2 (de) * 1992-05-04 1994-04-07 Alexander Maute Ölpumpe

Also Published As

Publication number Publication date
DE4441522A1 (de) 1996-05-23
JPH08240297A (ja) 1996-09-17
DE59502328D1 (de) 1998-07-02
EP0713973A1 (fr) 1996-05-29
US5823750A (en) 1998-10-20
JP3643156B2 (ja) 2005-04-27

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