EP1853824B1 - Dispositif et procede pour une alimentation en lubrifiant - Google Patents

Dispositif et procede pour une alimentation en lubrifiant Download PDF

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Publication number
EP1853824B1
EP1853824B1 EP06723034.2A EP06723034A EP1853824B1 EP 1853824 B1 EP1853824 B1 EP 1853824B1 EP 06723034 A EP06723034 A EP 06723034A EP 1853824 B1 EP1853824 B1 EP 1853824B1
Authority
EP
European Patent Office
Prior art keywords
lubricating oil
pressure
pump
control
oil pressure
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 - Fee Related
Application number
EP06723034.2A
Other languages
German (de)
English (en)
Other versions
EP1853824A1 (fr
Inventor
Franz Lukas
Volker Verhees
Dieter BÀ–HM
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.)
Audi AG
Original Assignee
Audi AG
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 Audi AG filed Critical Audi AG
Publication of EP1853824A1 publication Critical patent/EP1853824A1/fr
Application granted granted Critical
Publication of EP1853824B1 publication Critical patent/EP1853824B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/38—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C2/02 and having a hinged member
    • F04C2/39—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C2/02 and having a hinged member with vanes hinged to the inner as well as to the outer member
    • 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
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/18—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber
    • F04C14/22—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members
    • F04C14/223—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members using a movable cam

Definitions

  • the invention relates to a device and a method for lubricating oil supply of an internal combustion engine of a motor vehicle according to the preamble of claims 1 and 7.
  • lubricating oil pumps of an internal combustion engine of a motor vehicle the delivery volume is usually designed for the worst case of hot idling. This design takes into account the fact that at high oil temperature and correspondingly low oil viscosity and low engine speed, the lubricating oil supply must still be ensured. It follows that in all other operating conditions, the lubricating oil pump promotes too large lubricating oil flow, so "designed too large” is. This results inter alia in an increased power consumption of the lubricating oil pump.
  • Flow adjustable vane pumps offer the option of variable volume flow control. Conventional vane pumps can be combined with a multi-stage pressure control, so that there is an adjustable in oil pressure lubricating oil supply device, which is roughly adaptable to different operating conditions.
  • the EP 1 225 337 A2 already discloses a device of the type mentioned, in which the lubricating oil pump is designed as a pendulum slide pump and the oil pressure control device as a single-stage oil pressure control device.
  • the invention has for its object to provide a robust and cost-effective device for lubricating oil supply of an internal combustion engine, which allows a good adaptation to the various operating conditions of the internal combustion engine.
  • the solution of the invention allows an optimal adaptation of the power consumption of the lubricating oil pump to the needs of the internal combustion engine.
  • the term "internal combustion engine” is to be understood as meaning the internal combustion engine itself and, if appropriate, also ancillary components.
  • the design of the lubricating oil pump as a pendulum slide pump allows tuning of the delivery volume as a function of the respective operating state of the internal combustion engine, possibly taking into account further parameters.
  • the adjustable in the flow rate pendulum slide pump has the advantage over a conventional vane pump that trained as pendulum slide wings of the inner rotor do not run with their outer ends with high relative speed to a cam and thereby cause critical lubrication conditions, but that the pendulum slide with their outer ends in grooves a control ring are movably arranged, wherein the control ring rotates in a cam ring and is thus hydrodynamically mounted.
  • the mentioned critical lubrication conditions or a correspondingly high wear therefore do not occur in the pendulum slide pump used according to the invention.
  • the subject of the invention therefore enables a high level of operational safety.
  • the coupling between the oil pressure control device and a delivery volume adjustment of the pendulum slide pump is formed mechanically or hydraulically.
  • the oil pressure control device causes the bainvolumenverstell responded the pendulum slide pump to influence the amount of lubricating oil pumped and thus to take the oil pressure.
  • the oil pressure control device has for this purpose a control piston, which carries out -in dependence on the oil pressure displacement movements. These displacement movements can be transmitted mechanically to the delivery volume adjustment of the pendulum slide pump to adjust the delivery volume.
  • the oil pressure control device is designed as a two-stage oil pressure control device.
  • the required oil pressure is determined by a higher-level control or regulating device and influences the oil pressure control device such that either the lower or the higher oil pressure is available.
  • the oil pressure control device has a control piston with a plurality of, in particular two, active surfaces for a control pressure. If one of the active surfaces is acted upon by the control pressure, this leads to a corresponding control piston position, which causes a corresponding lubricating oil pressure. If one of the surface content is different or in addition at least one further active surface is acted upon by the control pressure, then the control piston moves to a new position, with the result that now another oil pressure is brought about.
  • the control piston is preferably acted upon by the control pressure and in opposite directions by a compression spring. Consequently, the control pressure works against the force of the compression spring, the control pressure -in dependence on its size and the size of the effective surface of the spool-causes a corresponding control piston position.
  • the control piston By the displacement of the control piston, the control ring of the pump is displaced so that adjusts a corresponding delivery volume, which in turn leads to the desired oil pressure in the engine.
  • a multi-way valve is provided for switching on or off the admission of the active surfaces of the control piston with the or at least one control pressure. If there is a two-stage oil pressure control device, then a two-way valve can be used, wherein in particular a 3/2-way switching valve can be used.
  • the invention further relates to a method for lubricating oil supply of an internal combustion engine of a motor vehicle according to claim 7.
  • the delivery volume of the promoted by the pendulum slide pump lubricating oil and / or the lubricating oil pressure of the conveyed by the pendulum slide pump lubricating oil adjusted, in particular controlled or regulated, that the power consumption of the lubricating oil pump, taking into account the operating condition of the engine as low as possible, especially minimized is.
  • This adaptation of the power consumption is done by adjusting the delivery volume of the lubricating oil while adjusting the lubricating oil pressure.
  • the FIG. 1 shows a device 100 for lubricating oil supply of an internal combustion engine.
  • the device 100 comprises a lubricating oil pump 101 and an oil pressure control device 102 and a connection installation 115, the latter being based on the FIG. 3 will be described in more detail.
  • the apparatus 100 has a housing 103 common to the lubricating oil pump 101 and the oil pressure control device 102 in which a control 104 is mounted to form a control ring 105.
  • a control 104 is mounted to form a control ring 105.
  • an outer rotor 106 is rotatably mounted, which forms a cam ring 107.
  • the cam ring 107 Within the cam ring 107 is an inner rotor 108, the radially displaceable pendulum slide 109 stores one end, the other ends of the pendulum slide 109 are guided in grooves of the cam ring 107.
  • the housing 103 not only the lubricating oil pump 101 but also the oil pressure control device 102 is integrated. This is both the FIG. 1 as well as the FIG. 2 removable.
  • FIG. 3 illustrates the oil pressure control device 102 in a schematic representation. It has within a block of material 2 a cylinder 3, in which a control piston 4 is guided longitudinally displaceable.
  • the cylinder 3 has a first partial cylinder 18 and a second partial cylinder 19 connected thereto in the longitudinal extension.
  • the partial cylinders 18 and 19 are concentric with each other.
  • the control piston 4 has a first partial piston 5 and a second partial piston 6.
  • the first partial piston 5 is guided in the partial cylinder 18 and the second partial piston 6 in the second partial cylinder 19.
  • a control element 7 connects, which has a second part of the piston 6 facing away from head surface 8, which is acted upon by a return spring 9, which is formed as a compression spring 9 '.
  • the diameters of the partial pistons 5 and 6 are of different sizes, ie, the first partial piston 5 has a smaller diameter than the second partial piston 6. Consequently, the diameter of the first partial cylinder 18 is smaller than that of the second partial cylinder 19.
  • the first partial piston 5 has a first end face 10, which faces away from the second partial piston 6.
  • the first end face 10 forms a first partial surface 11 (first active surface 11 ') of a pressure surface of the control piston 4.
  • the second partial piston 6 has a differential surface 16, which forms a second partial surface 17 of the control piston 4.
  • the second partial surface 17 forms a second active surface 17 '.
  • the second partial area 17 results from the difference between the first end face 10 and the cross-sectional area of the second partial piston 6.
  • a first pressure connection 20 opens into the first part-cylinder 18.
  • a second pressure connection 21 opens radially into the second part-cylinder 19.
  • a third pressure connection 24 leads into a part 23 of the cylinder 3, in which the control element 7 is located.
  • a lubricating oil-carrying system pressure connection 30 is connected to a system control connection 31 and to the first pressure connection 20 and the third pressure connection 24.
  • the system pressure connection 30 leads to the lubricating oil pressure output side in the FIG. 3 not shown, but from the FIGS. 1 and 2 resulting lubricating oil pump 101.
  • the system pressure connection 30 is therefore under pump pressure.
  • the system control connection 31 leads as well as the second pressure connection 21 to a 3/2-way valve 29.
  • a discharge line 32 is connected, which opens into an oil collecting container, not shown, for example, an oil pan.
  • a leakage line 26 is further connected, which opens in the control chamber 23 in the region of the control element 7 and that in an area between the control element 7 and the second Partial piston 6.
  • a control line 25 is connected to an adjusting cylinder 33 of the FIG. 2 not shown lubricating oil pump 101 leads.
  • the oil pressure control device 102 forms a multi-stage oil pressure control device 113, namely a two-stage oil pressure control device 114 due to the two active surfaces 11 'and 17'.
  • the function of the two-stage oil pressure control device 114 will be discussed below.
  • the second pressure connection 21 and the system control connection 31 are connected to each other.
  • the system pressure communicated via the system pressure connection 30 and produced by the Pendei sliding pump 112 acts as the first hydraulic pressure P 1 and acts on the first part surface 11 of the first part piston 5.
  • This first hydraulic pressure P 1 is transmitted via the 3 / 2-way valve 29 is also connected to the second pressure connection 21 and results in a second hydraulic pressure P 2 , wherein P 2 is the same size as P 1 .
  • the lubricating oil pressure is set to a selectable value and the delivery rate of the pendulum vane pump is set such that there is a suitable supply of the internal combustion engine at low power consumption of the pendulum vane pump.
  • the result is a pressure reduction in the system pressure connection 30.
  • This also results in the first partial surface 11 being over the first Pressure connection 20 a reduced first hydraulic pressure P. 1 or on the second partial surface 17 via the second pressure connection 21 to a reduced second hydraulic pressure P 2 .
  • the resulting effective pressure P w is thus lower, so that now the force of the return spring 9 outweighs the effective pressure P w and causes a longitudinal displacement of the control piston 4 in the pressure direction of the return spring 9, whereby the control element 7 increases the control gap 22.
  • the pressurization of the adjusting cylinder 33 of the pendulum slide pump 112 is increased via the control line 25, so that this equalizes their delivery capacity of the increased requirement.
  • This increased delivery rate compensates for the pressure drop and regulates the system pressure to the desired level.
  • the system pressure is now applied via the shared control chamber 23 and the control gap 22, the control line 25, so that via the adjusting cylinder 33 of the pendulum slide pump 112, a higher system pressure is set.
  • the first part surface 11 is depressurized and only the second part surface 17 is acted upon by hydraulic pressure.
  • FIG. 4 corresponds substantially to the embodiment of FIG. 3 However, instead of a hydraulic coupling between the oil pressure control device 114 and a delivery volume adjustment of the pendulum slide pump 112, a mechanical coupling is provided. Insofar as omitted in the FIG. 4 the control line 25, the leakage line 26, the adjusting cylinder 33 and the third pressure connection 24th
  • the control piston 4 is accordingly FIG. 4 - With a direction of its longitudinal displacement provided at an angle inclined surface 116 against which by means of a spring 117, a feeler member 118 of the control ring 105 of the pendulum slide pump 112 is applied.
  • the feeler 118 is slidably mounted along the double arrow 119.
  • control piston 4 If the control piston 4 is displaced, the feeler member 119 and thus the control ring 105 are displaced in a corresponding manner due to the inclined surface 116, with the result that the relative position of the outer rotor 6 to the inner rotor 8 of the pendulum slide pump 112 is thereby changed.
  • these two components can continuously change their eccentric position to a concentric position.
  • the concentric position is continuously variable in the eccentric position.
  • a corresponding adjustment of the outer rotor 6 to the inner rotor 8 is therefore made in dependence on the position of the control piston 4, whereby the lubricating oil flow rate of the pendulum slide pump 112 is determined.
  • the lubricating oil pump 101 as a pendulum slide pump 112 and the multi-stage oil pressure control device 113 can be an optimal adaptation of the power consumption of the lubricating oil pump 101 to achieve the needs of the internal combustion engine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Claims (9)

  1. Dispositif (100) pour l'alimentation en huile lubrifiante d'un moteur à combustion interne d'un véhicule automobile, comprenant une pompe à huile lubrifiante (101) et un dispositif de réglage de la pression d'huile (102), dans lequel la pompe à huile lubrifiante (101) se présente sous la forme d'une pompe à tiroir pendulaire (112) et le dispositif de réglage de la pression d'huile (102) présente un piston de commande (4), caractérisé en ce que le dispositif de réglage de la pression d'huile (102) se présente sous la forme d'un dispositif de réglage de la pression d'huile à étages multiples (113), en ce que le piston de commande (4) présente plusieurs, en particulier deux surfaces actives (11, 17) pour l'application d'une pression de commande et en ce qu'une soupape à plusieurs voies est prévue pour initier ou interrompre l'application de la ou au moins d'une pression de commande aux surfaces actives (11, 17).
  2. Dispositif selon la revendication 1, caractérisé en ce que l'accouplement entre le dispositif de réglage de la pression d'huile (102) et un dispositif de réglage du volume d'alimentation de la pompe à tiroir pendulaire (112) se présente sous une forme mécanique ou hydraulique.
  3. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de réglage de la pression d'huile (102) se présente sous la forme d'un dispositif de réglage de la pression d'huile à deux étages (114).
  4. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que le piston de commande (4) est soumis à la pression de commande et à l'opposé par un ressort de compression (9).
  5. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la pompe à tiroir pendulaire (112) forme avec le dispositif de réglage de la pression d'huile (102) une unité modulaire.
  6. Dispositif selon l'une quelconque des revendications précédentes, caractérisé par un boîtier commun (103) pour la pompe à tiroir pendulaire (112) et le dispositif de réglage de la pression d'huile (102).
  7. Procédé d'alimentation en lubrifiant d'un moteur à combustion interne d'un véhicule automobile à l'aide d'un dispositif selon une ou plusieurs des revendications précédentes, caractérisé en ce que, lors de la commutation de la soupape à voies multiples (29) pour le réglage d'une pression de système plus élevée, la pression (P2) appliquée sur l'une des surfaces actives (11, 17) du piston de commande (4) est réduite.
  8. Procédé selon la revendication 7, caractérisé en ce que le volume d'alimentation de l'huile lubrifiante acheminée par la pompe à tiroir pendulaire et/ou la pression de l'huile lubrifiante acheminée par la pompe à tiroir pendulaire est ou sont régulés, en particulier commandés et/ou réglés de sorte que la puissance absorbée de la pompe à huile lubrifiante soit la plus faible possible, en particulier minimisée, en tenant compte de l'état de fonctionnement du moteur à combustion interne.
  9. Procédé selon la revendication 7 ou la revendication 8, caractérisé en ce que la régulation du volume d'alimentation de l'huile lubrifiante se fait par régulation de la quantité d'alimentation de la pompe à tiroir pendulaire et/ou la régulation de la pression d'huile lubrifiante se fait par régulation d'une valeur de compression de plusieurs étages de compression sélectionnables du dispositif de réglage de la pression d'huile.
EP06723034.2A 2005-02-15 2006-02-11 Dispositif et procede pour une alimentation en lubrifiant Expired - Fee Related EP1853824B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005006703A DE102005006703A1 (de) 2005-02-15 2005-02-15 Vorrichtung und Verfahren zur Schmierölversorgung
PCT/EP2006/001263 WO2006087151A1 (fr) 2005-02-15 2006-02-11 Dispositif et procede pour une alimentation en lubrifiant

Publications (2)

Publication Number Publication Date
EP1853824A1 EP1853824A1 (fr) 2007-11-14
EP1853824B1 true EP1853824B1 (fr) 2015-05-27

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP06723034.2A Expired - Fee Related EP1853824B1 (fr) 2005-02-15 2006-02-11 Dispositif et procede pour une alimentation en lubrifiant

Country Status (4)

Country Link
US (1) US8230975B2 (fr)
EP (1) EP1853824B1 (fr)
DE (1) DE102005006703A1 (fr)
WO (1) WO2006087151A1 (fr)

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DE102007002677A1 (de) * 2007-01-18 2008-07-24 Bayerische Motoren Werke Aktiengesellschaft Verfahren der Betätigung einer volumenstromregelbaren Schmiermittelpumpe im Schmiermittelkreislauf eines Dieselmotors
US7815016B2 (en) * 2008-02-25 2010-10-19 Gm Global Technology Operations, Inc. Lubrication control system for automatic transmissions
DE102009013986A1 (de) 2009-03-19 2010-09-23 Voigt, Dieter, Dipl.-Ing. Verstellbare Rotorpumpe
RU2549912C2 (ru) 2009-06-05 2015-05-10 Аризона Борд Оф Риджентс Эктинг Фор Энд Он Бихаф Оф Аризона Стейт Юниверсити Комбинированный оптоэлектрохимический датчик оксидов азота в газообразных пробах
DE102010023068A1 (de) * 2010-06-08 2011-12-08 Mahle International Gmbh Flügelzellenpumpe
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DE102015212432A1 (de) 2015-07-02 2017-01-19 Volkswagen Aktiengesellschaft Verbrennungsmotor mit einer Ölpumpenanordnung
JP6469155B2 (ja) * 2017-03-22 2019-02-13 本田技研工業株式会社 流体圧回路
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Also Published As

Publication number Publication date
DE102005006703A1 (de) 2006-08-17
WO2006087151A1 (fr) 2006-08-24
US20080257648A1 (en) 2008-10-23
EP1853824A1 (fr) 2007-11-14
US8230975B2 (en) 2012-07-31

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