EP1012448A1 - Module de pompe a huile avec filtre, en particulier pour huile lubrifiante d'un moteur a combustion interne - Google Patents

Module de pompe a huile avec filtre, en particulier pour huile lubrifiante d'un moteur a combustion interne

Info

Publication number
EP1012448A1
EP1012448A1 EP98949991A EP98949991A EP1012448A1 EP 1012448 A1 EP1012448 A1 EP 1012448A1 EP 98949991 A EP98949991 A EP 98949991A EP 98949991 A EP98949991 A EP 98949991A EP 1012448 A1 EP1012448 A1 EP 1012448A1
Authority
EP
European Patent Office
Prior art keywords
oil
oil pump
housing
base part
combustion engine
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.)
Granted
Application number
EP98949991A
Other languages
German (de)
English (en)
Other versions
EP1012448B1 (fr
Inventor
Peer-Oliver KÜTTNER
Martin Weindorf
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.)
Mann and Hummel GmbH
Original Assignee
DaimlerChrysler AG
Filterwerk Mann and Hummel 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 DaimlerChrysler AG, Filterwerk Mann and Hummel GmbH filed Critical DaimlerChrysler AG
Publication of EP1012448A1 publication Critical patent/EP1012448A1/fr
Application granted granted Critical
Publication of EP1012448B1 publication Critical patent/EP1012448B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/02—Pressure lubrication using lubricating pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/03—Mounting or connecting of lubricant purifying means relative to the machine or engine; Details of lubricant purifying means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/03—Mounting or connecting of lubricant purifying means relative to the machine or engine; Details of lubricant purifying means
    • F01M2011/031—Mounting or connecting of lubricant purifying means relative to the machine or engine; Details of lubricant purifying means characterised by mounting means
    • F01M2011/035—Mounting or connecting of lubricant purifying means relative to the machine or engine; Details of lubricant purifying means characterised by mounting means comprising oil pumps

Definitions

  • the invention relates to an oil pump module for an internal combustion engine, in particular a motor vehicle, containing at least one oil pump and oil cleaning agent.
  • the oil pump and the oil cleaning agent are at least partially arranged in or on a common base part.
  • the base part connecting the oil pump and the oil cleaning agent can serve both for the oil-carrying connection of the two parts and also contribute to stability.
  • the base part can be
  • CONFIRMATION COPY either act as a type of carrier plate, or preferably at least partially enclose or include the oil pump and / or the oil cleaning agent.
  • the base part can be largely made of plastic. In this way, the production of the base part is easier and cheaper. Using the possibility to find many plastics "can withstand the loads when mounted on or in the vicinity of an internal combustion engine.
  • plastics are used with glass or carbon fiber inclusions are used, wherein the base member preferably can be produced by injection molding.
  • the base part can be connected to the housing of the internal combustion engine to fasten the oil pump module, in particular by a releasable connection, such as a screw connection.
  • a releasable connection such as a screw connection.
  • the oil pump is preferably driven by the internal combustion engine, in particular via a drive shaft extending into the housing of the internal combustion engine, it being possible for the coupling to take place via an angular drive on the drive shaft. A separate drive for the oil pump can be saved.
  • the base part can advantageously place the oil pump on the internal combustion engine or its housing, in particular press it on in a sealed manner. A separate attachment for the oil pump on the internal combustion engine is not required. Furthermore, the drive connection described above and an oil-carrying connection can be produced particularly cheaply by the oil pump connected directly to the internal combustion engine. This can reduce the overall size of the internal combustion engine including the oil pump module.
  • the oil from the internal combustion engine is advantageously fed into the oil pump via corresponding recesses in an oil pump housing, which correspond to openings in the housing of the internal combustion engine to which they are applied.
  • the oil pump and the oil pump module center themselves when fastened to the housing of the internal combustion engine, preferably by means of a projection on the oil pump housing. which engages in a corresponding recess in the housing of the internal combustion engine. It is not only possible to ensure a defined position of the oil pump in relation to the internal combustion engine, but also the "" precise adjustment of the oil feed openings to the oil pump. Securing against axial rotation of the oil pump can be done by fastening the entire oil pump module using the base part.
  • the ant ⁇ cbs ⁇ velle of the oil pump advantageously runs through the projection, wherein it can be stored in particular in a bearing, for example a sliding bearing directly in the oil pump housing.
  • the oil pump is preferably covered toward the base part with an oil pump cover, which is preferably designed in accordance with the shape of the pump wheels. For this purpose, it may be disk-shaped and at least partially seal the oil pump to the outside.
  • the oil pump cover does not necessarily have to be connected directly to the oil pump or its housing, but can be pressed against the oil pump by the base part and secured against rotation.
  • the base part can at least partially enclose and / or seal the oil pump. This makes it possible. insert the individual parts of the oil pump, so to speak, loosely into the base part, which creates the cohesion of the individual parts.
  • the base part is at least partially flowed through with oil.
  • the base part can preferably have guide means, in particular guide channels, for an oil flow, which can at least partially be directly connectable to the oil pump.
  • the base part can be directly oil-carrying. Separate parts such as hoses or pipes can be saved in this way.
  • At least one oil cooler in particular an oil cooler through which water flows, can be present, which at least seals with the base part is connectable or enclosed by it.
  • Guide channels of the base part for the oil flow can be directly connected in a sealed manner to corresponding openings in the at least one oil cooler. In this way, the base part can also take over the function of at least partially directing the oil flow.
  • At least one oil cooler can preferably be connected to the oil cleaning agents ⁇ in particular by a sealed pressure. In this way, an oil flow is made possible without further aids.
  • the oil flow, which is led through the at least one oil cooler at least once, preferably twice, can advantageously be conducted between the at least two flows through the oil cleaning agent. In this way, the cooling effect is enhanced and the oil flow is simplified.
  • the oil pump is arranged in the oil flow direction, in particular as the first component after the oil emerges from the internal combustion engine, before it enters the at least one oil cooler.
  • This oil cooler can preferably be arranged in the oil flow direction before entering the oil cleaning agent.
  • the oil pump can thus push the oil through the following components.
  • the oil cleaning agents can preferably comprise at least one oil filter. In this, dirt particles or the like which are felt by the oil can be separated from the oil or separated therefrom.
  • the oil pump can advantageously be designed as an internal gear pump, in particular as a trochoid pump, the wheels of which rotate in a barrel housing, which is preferably made of metal.
  • the barrel housing can simultaneously serve as an oil pump housing.
  • Such an internal gear pump is reliable and takes up little space.
  • the wheels of the oil pump are also preferably made of metal, with sintered steel wheels being particularly suitable.
  • At least one gear wheel preferably the inner rotor with trochoid teeth
  • a drive shaft in particular releasably connected. It can preferably be attached with a positive connection.
  • An easy-to-reach separation between drive shaft and inner rotor makes repairs and maintenance work easier.
  • the base part advantageously completely surrounds the at least one oil cooler and the oil cleaning agents and seals them against one another, preferably by axial compression. These parts can be inserted into the base part through an opening, in particular an opening which can be closed with a cap which can be fastened. This means that when the cap is replaced, they are completely enclosed and sealed off from the outside.
  • the oil cleaning agents can be removed on one side separately from the other components of the oil pump module in order to facilitate an oil filter change.
  • the oil pump can be connected to the base part from another side, preferably inserted therein, as the oil cleaning agent and / or the at least one oil cooler.
  • An approximately right-angled arrangement of the components is advantageous both in terms of the small space requirement and the functionality.
  • a base part designed as a plastic housing is created, to which an oil cooler and an oil filter are inserted from one side into an opening and closed and screwed with a cap, and which largely encloses the oil pump housing on another side closes this and with this end surface and a seal against the housing of the
  • the components of the oil pump module are preferably sealed off from one another and from the outside with suitable sealants, in particular axial molded seals. Because the oil pump, the oil cooler and the oil filter are largely enclosed by the housing of the base part, a simple-to-seal assembly can preferably be produced.
  • FIG. 1 An embodiment of the invention is shown in the single drawing and is explained in more detail below.
  • the drawing shows an oil pump module according to the invention in the disassembled state.
  • the drawing shows an oil pump module 11 according to the invention, which is shown broken down into its essential individual parts for the sake of clarity. The illustration also shows how the oil pump module 11 is to be assembled.
  • a base part 12 designed as a plastic housing consists of an approximately cylindrical part which merges into a flange-like housing section 13 approximately at right angles to the cylinder axis.
  • This housing section has an approximately square, in particular approximately square, cross section.
  • holes 14 are made, into which metal sleeves 15 are introduced.
  • the diameter of the bores 14 and the metal sleeves 15 are chosen so that the metal sleeves 15 are pressed into the bores and thereby achieve a firm hold.
  • the base part 12 with an end face 16 of the housing section 13 is pressed against or fastened to a housing (not shown) of an internal combustion engine by means of screw connections or the like, which are not shown, which are guided through the metal sleeves 15.
  • the housing section 13 of the base part 12 has a recess 17 designed in such a way that it can receive an oil pump housing 19 of an oil pump 18 in a precisely fitting manner.
  • the Housing section 13 at one point, in the drawing downwards, broken, because in this area the dimensions of the oil pump housing 19 protrude beyond those of the housing section 13.
  • the oil pump housing 19, which can preferably be produced from metal, in particular from aluminum, by the die-casting process, is preferably made in one piece. On its side which cannot be seen in the drawing, it has a circular recess or a running housing 21 for an outer rotor (internal gear) 22, the diameters of the two ensuring reliable, rotatable mounting of the outer rotor.
  • an outer rotor 22 In the outer rotor 22 there is an inner rotor (outer gear) 23 which is mounted eccentrically with respect to the outer rotor 22.
  • the trochoid toothing of the outer gear 23 in FIG. 1 engages in the lower region in a correspondingly shaped toothing on the inside of the outer rotor 22.
  • the inner rotor (outer gear) 23 has one tooth less than the outer rotor 22 projections.
  • the Irmenrotor 23 is driven by a form-fitting connecting piece 25 which sits on a drive shaft 26.
  • This drive shaft 26 is slidably mounted in a cylindrical projection 27, which is located on the side of the oil pump housing 19 facing away from the base part 12.
  • the projection 27 and thus the drive shaft 26 of the inner rotor 23 are arranged eccentrically with respect to the barrel housing 21 and the outer rotor 22, slightly offset downwards in the drawing figure. In this way, the pump function which characterizes a trochoid pump formed in this way is achieved, which will not be discussed in more detail here.
  • the drive shaft 26 has an angular drive 28. which is connected to a corresponding connection in the housing of the internal combustion engine.
  • the oil pump housing 19 is inserted into the recess 17 of the housing section 13 of the base part 12 and is pressed by means of this with its front surface visible in the drawing against the housing of the internal combustion engine.
  • the cylindrical projection 27, together with the drive shaft 26 with an angular drive 28, projects into the housing.
  • the oil pump housing 19 has an inlet opening 30 and an outlet opening 31 through which the oil is respectively let in or let out.
  • the dashed arrows indicate the direction of flow of the oil flow.
  • a cut-off valve 33 is provided which, when a pressure limit is exceeded, returns oil which has already been pumped from the pressure side to the suction side.
  • the cut-off valve 33 which is designed, for example, as a piston valve pressure control valve, limits the system pressure to an intended maximum in the entire speed range.
  • the oil pump 18 is covered towards the housing section 13 by a pump cover 34, which is designed as a sheet metal disk.
  • the oil pump housing 19 is sealed off from the housing of the internal combustion engine by a circumferential and multiply divided seal 35 which is inserted into the connecting surface of the oil pump housing 19 and which seals both the cylindrical projection 27 and the inlet and outlet openings of the oil pumps 30 and 31 and the pure oil outlet opening 46 individually encloses and thus prevents oil from escaping.
  • a cylindrical oil cooler 37 is inserted into the cylindrical section of the base part 12 from below. It is designed as a round disc oil cooler and is fed with water as the cooling medium.
  • the cooling water supply takes place via two connecting pieces 38 which protrude through two corresponding openings 39 in the plastic housing of the base part 12.
  • union nuts which are screwed onto the base of the connecting piece 38 after the oil cooler 37 has been inserted into the base part 12, the oil cooler 37 is firmly connected to the base part and sealed to the outside via an axial molded seal. Cooling water supply hoses or the like can be connected to the connecting piece 38.
  • the oil cooler 37 has an oil inlet 41 through which oil to be cooled is introduced into the oil cooler. Since the mode of operation of a disc oil cooler is known per se, it will not be discussed in more detail here.
  • a round oil filter 43 is pressed onto the free end of the oil cooler 37, specifically by means of a closure cap 45 guided over the latter, which is screwed onto the lower end of the cylindrical section of the base part 12 and closes the housing of the base part.
  • the inside diameter of the closure cap 45 is a little larger than the outside diameter of the oil filter 43. So that an oil stream emerging from the bottom of the oil cooler 37 can be sufficiently distributed around the entire oil filter 43. It passes through the oil filter 43, out of it centrally and through a center through the oil cooler 37 running oil channel 42 out of the oil pump module 11 at the outlet opening 46 and into the internal combustion engine 30.
  • connection of the individual parts of the oil pump module 11, in particular the base part 12 with the oil pump housing 19 and the oil cooler 37 and the oil cooler 37 with the oil filter 43 and the connection of the base part with the closure cap 45, are preferably sealed by means of a sealerT.
  • a sealerT rubber or silicone gaskets or sealing rings are suitable.
  • Oil cooler 37 and oil filter 43 in the housing of the base part 12 enables both their connection to one another and their sealing, in particular to the outside, in a simple manner.
  • the base part 12 not only forms the fastening device for the oil pump 18 on the housing of the internal combustion engine, but also closes it with the pump cover 34.
  • the drive shaft 26 is guided through the cylindrical projection 27, the inner rotor 23 is placed on the connecting piece 25 and, together with the outer rotor 22 surrounding it, is pushed into the barrel housing 21.
  • the angular drive 28 is then placed on the drive shaft 26 and the shutoff valve 33 is inserted into the oil pump housing 19.
  • the preassembled oil pump 18 is guided into the recess 17 provided for this purpose, possibly with a seal, the pump cover 34 having already been inserted into the base part 12.
  • the seal 35 is inserted into a recess provided for this purpose in the area of the front surface of the oil pump 18.
  • a stamped sheet metal plate is inserted as an oil-changing cover 34 into the oil pump housing 19 in a form-fitting manner.
  • the oil cooler 37 together with the seals is first inserted into the cylindrical section of the base part 12 and screwed or firmly connected and sealed to it by means of the union nut 38 which is guided over the connecting piece 38.
  • the oil filter 43 is plugged into the lower end of the oil cooler 37, preferably by means of a round projection of the oil cooler 37 and which projects into the opening of the oil filter 43 seals radially over this projection.
  • the closure cap 45 is guided over the oil filter 43 and screwed with a thread, preferably an internal thread, with a corresponding thread of the cylindrical section of the base part 12.
  • a seal is provided between the base part 12 and the closure cap 45.
  • the oil pump module 11 can be manufactured, for example, by a supplier and delivered to the automobile manufacturer. By assembling the entire oil pump module on the supplier side, it can be checked and tested by the supplier. In the final assembly, the oil pump module only has to be screwed to it by means of screws or the like, which are guided through the metal sleeves 15 of the housing section 13 of the base part 12 and engage in the housing of the internal combustion engine. This enables simple and quick assembly in the area of final assembly. To replace a used oil filter, the cap 45 only has to be unscrewed, the oil filter element replaced and the cap screwed on again.
  • Oil, especially contaminated oil enters the oil pump 18 from an opening (not shown) of the internal combustion engine through the inlet opening 30. Due to the pumping action of the oil pump 18 designed as a trochoid pump, the oil is introduced through the pump wheels 22 and 23 into guide channels in the base part 12 according to the arrow shown in broken lines. It enters the oil inlet 41 of the oil cooler 37 via the left elevation on the cylindrical section of the base part 12. In this, the oil heated by the processes in the internal combustion engine is cooled.
  • the design of the oil cooler 37 which is designed as a round disk oil cooler, has a plurality of round disks which are attached one above the other and are sealed off from the outside and thus form adjacent, disk-shaped chambers. A chamber with cooling water and one with oil flow through each alternately. At the lower end, the cooled oil exits the oil cooler 37 and is distributed through the circumferential surface of the oil filter 43.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Abstract

L'invention concerne un module de pompe à huile (11) permettant de grouper en une seule unité de construction, une pompe à huile (18), un refroidisseur d'huile (37) et un filtre à huile (43). A cet effet, le module présente un élément de base (12) pouvant être réalisé sous forme d'un boîtier en matière plastique. Une pompe à huile (18) est insérée par un côté et, par l'autre côté, un refroidisseur d'huile (37) et un filtre à huile (43). En outre, la pompe à huile (18) est appliquée hermétiquement par pression, par l'élément de base (12), contre la carcasse d'un moteur à combustion interne, de manière à être entraînée par ce moteur. L'invention permet d'obtenir non seulement une construction particulièrement compacte et légère du module de pompe à huile (11), mais également un pré-assemblage complet, avec contrôle du module terminé chez le fournisseur.
EP98949991A 1997-09-10 1998-09-07 Module de pompe a huile avec filtre, en particulier pour huile lubrifiante d'un moteur a combustion interne Expired - Lifetime EP1012448B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19739668 1997-09-10
DE19739668A DE19739668A1 (de) 1997-09-10 1997-09-10 Ölpumpenmodul
PCT/EP1998/005654 WO1999013203A1 (fr) 1997-09-10 1998-09-07 Module de pompe a huile avec filtre, en particulier pour huile lubrifiante d'un moteur a combustion interne

Publications (2)

Publication Number Publication Date
EP1012448A1 true EP1012448A1 (fr) 2000-06-28
EP1012448B1 EP1012448B1 (fr) 2004-11-10

Family

ID=7841828

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98949991A Expired - Lifetime EP1012448B1 (fr) 1997-09-10 1998-09-07 Module de pompe a huile avec filtre, en particulier pour huile lubrifiante d'un moteur a combustion interne

Country Status (5)

Country Link
US (1) US6267094B1 (fr)
EP (1) EP1012448B1 (fr)
JP (1) JP4056033B2 (fr)
DE (2) DE19739668A1 (fr)
WO (1) WO1999013203A1 (fr)

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Also Published As

Publication number Publication date
DE19739668A1 (de) 1999-03-11
DE59812251D1 (de) 2004-12-16
US6267094B1 (en) 2001-07-31
JP2001515985A (ja) 2001-09-25
JP4056033B2 (ja) 2008-03-05
EP1012448B1 (fr) 2004-11-10
WO1999013203A1 (fr) 1999-03-18

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