EP1076164B1 - Dispositif et procédé de régulation de la pression d'huile dans un moteur à combustion - Google Patents

Dispositif et procédé de régulation de la pression d'huile dans un moteur à combustion Download PDF

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Publication number
EP1076164B1
EP1076164B1 EP00115546A EP00115546A EP1076164B1 EP 1076164 B1 EP1076164 B1 EP 1076164B1 EP 00115546 A EP00115546 A EP 00115546A EP 00115546 A EP00115546 A EP 00115546A EP 1076164 B1 EP1076164 B1 EP 1076164B1
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EP
European Patent Office
Prior art keywords
oil
temperature
compression spring
control valve
pressure control
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
EP00115546A
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German (de)
English (en)
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EP1076164A1 (fr
Inventor
Johannes Wüst
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.)
Dr Ing HCF Porsche AG
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Dr Ing HCF Porsche AG
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Publication date
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Publication of EP1076164A1 publication Critical patent/EP1076164A1/fr
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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
    • F01M1/16—Controlling lubricant pressure or quantity

Definitions

  • the invention relates to a device and a method for controlling the Lube oil pressure of an internal combustion engine according to the preamble of the two Main claims.
  • From DE 30 33 820 C2 is a device for controlling the lubricating oil pressure of a Internal combustion engine, in which the oil pressure determining overflow valve with a thermostatically controlled valve body is provided.
  • the bias of the Valve body acting on compression spring as a function of the temperature of Lubricating oil can be changed.
  • Lubricating oil heats up, expands the expansion element, creating a second Spring element, the bias of the compression spring is reduced, so that the overflow valve opens earlier and thus the lubricating oil pressure in the warm operating state of Internal combustion engine is reduced.
  • the reduction of the lubricating oil pressure with Increasing oil temperature is justified by the fact that even under these conditions A sufficient lubrication of the bearings can take place.
  • the thermostatic oil pressure control valve according to the invention is provided with means that cause in the cold operating condition of the internal combustion engine, the opening for the Bypass line or for the return line to the suction side of the oil pump released earlier is when in warm operating condition.
  • the oil pressure in the cold operating condition lowered the internal combustion engine, which advantageously the specific Fuel consumption can be reduced.
  • the compression spring of the thermostatically monitored Oil pressure control valve upstream of an expansion element in series, with increasing Lubricating oil temperature increases the overall length of both elements.
  • the compression spring is designed as a bimetallic strip, wherein the spring characteristic in dependence on the temperature of the lubricating oil so is changed, that the spring rate of the compression spring with increasing temperature of Lubricating oil is increased and vice versa.
  • the compression spring is made of an alloy built up, due to a reversible temperature-dependent Microstructure state change the spring rate of the compression spring with increasing temperature of the lubricating oil increases.
  • an oil pump 10 is from an oil pan 12 of a non-illustrated Engine lubricating oil sucked and marked V consumers, such. the Bearing points of the crankshaft, the conrod bearings, the bearings of the camshaft, etc. fed.
  • V consumers such. the Bearing points of the crankshaft, the conrod bearings, the bearings of the camshaft, etc. fed.
  • the oil pressure control valve 14 is in essentially of a working piston designed as a cup-shaped valve body 16, the longitudinally displaceable in a bore 18 of the housing 20 of the oil pressure control valve 14 is arranged.
  • the valve bottom 16a of the valve body 16 is characterized by in the pressure chamber 22 located lubricating oil, shown schematically by the dashed line, applied.
  • lubricating oil pressure acts a on the other side of the valve bottom 16a in the bore 18 of the oil pressure control valve 14 arranged compression spring 24 in the cup-shaped valve body 16 is inserted and passed through the valve sheath 16b.
  • the compression spring 24 supports extending from a likewise arranged in the bore 18 expansion element 26, which in turn is arranged on a closure device 28 arranged on the housing 20 supported.
  • opening 30 provided in certain operating conditions of the engine is released through the valve jacket 16b of the valve body 16.
  • the opening 30 is with a schematically illustrated return channel 32 in connection, to the suction side 33 of the oil pump 10 returns. Seen in the pressure direction of the lubricating oil is behind the Opening 30 has a second bore 18 connected to the opening 34, which via a running at an acute angle to the bore 18 channel 36 also with the Return line 32 is in communication.
  • the release of the opening 30 through the Working piston 16 can be controlled via a corresponding spring characteristic be that the oil pressure with further increase in the engine speed is not on a constant value is maintained, but continue with less slope than before Opening the oil pressure control valve increased. This takes into account the fact that in the upper engine speed range for a reliable Lubrication a higher oil pressure is required.
  • FIG. 2 shows a second and third embodiment of a thermostatically controlled Oil pressure control valve 14 shown, wherein like components with the same reference numerals are provided.
  • a compression spring 24 'used as Thermobimetal is formed for temperature-dependent control of the oil pressure is in the second Embodiment of the ⁇ lldregelregelfilfil 14 .
  • Thermobimetal are known as composites Thermobimetals, the spring characteristic changes depending on the temperature.
  • the compression spring 24 "as an alloy with formed so-called shape memory effect. This is based on reversible Temperature-dependent microstructural state changes, the change of the Spring characteristic due to microstructural transformation in thermostatically controlled Oil pressure control valve 14 in turn can be exploited in the desired sense.
  • Out Literature known alloys are e.g. Nickel-titanium, copper-zinc-aluminum and Copper-aluminum-nickel (see “metal springs", Springer-Verlag, 1997, p. 55ff.)

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

Claims (5)

  1. Dispositif de régulation de la pression de l'huile de lubrification d'un moteur à combustion interne, comportant une soupape de régulation de la pression de l'huile surveillée de manière thermostatique dont le corps de soupape est soumis à l'action d'un ressort de pression dans le sens de la fermeture, le corps de soupape dégageant, en fonction du débit et de la température de l'huile, un orifice de la soupape de régulation de la pression de l'huile par lequel l'huile reflue sur le côté aspiration de la pompe à huile, caractérisé en ce que la soupape (14) de régulation de la pression de l'huile régulée de manière thermostatique comporte des moyens par lesquels le corps de soupape (16) dégage ultérieurement l'orifice (30) de la soupape (14) de régulation de la pression de l'huile lorsque la température de l'huile de lubrification augmente, ce qui fait que la pression de l'huile dans l'état de fonctionnement à froid du moteur à combustion interne est abaissée.
  2. Dispositif selon la revendication 1, caractérisé en ce qu'en amont du ressort de pression (24) est monté en série un élément en matière extensible (26) qui augmente la longueur totale (x) du ressort de pression (24) et de l'élément en matière extensible (26), lorsque croít la température de l'huile de lubrification augmente.
  3. Dispositif selon la revendication 1, caractérisé en ce que le ressort de pression (24') est réalisé sous forme d'un bilame thermique de manière que la courbe caractéristique du ressort soit modifiée en fonction de la température de l'huile de lubrification, en ce que le coefficient d'élasticité du ressort de pression (24') augmente lorsque croít la température de l'huile de lubrification.
  4. Dispositif selon la revendication 1, caractérisé en ce que le ressort de pression (24') se compose d'un alliage dans lequel, à partir d'une température déterminée, il se produit une modification de la structure qui fait que le coefficient d'élasticité du ressort de pression (24') augmente lorsque croít la température de l'huile de lubrification.
  5. Procédé de régulation de la pression de l'huile de lubrification d'un moteur à combustion interne, comportant une soupape de régulation de la pression de l'huile surveillée de manière thermostatique dont le corps de soupape est soumis à l'action d'un ressort de pression dans le sens de la fermeture, le corps de soupape dégageant, en fonction du débit et de la température de l'huile, un orifice de la soupape de régulation de la pression de l'huile par lequel l'huile reflue sur le côté aspiration de la pompe à huile, caractérisé en ce que le corps de soupape (16) dégage ultérieurement l'orifice (30) de la soupape (14) de régulation de la pression de l'huile lorsque la température de l'huile de lubrification augmente, ce qui fait que la pression de l'huile dans l'état de fonctionnement à froid du moteur à combustion interne est abaissée.
EP00115546A 1999-08-12 2000-07-19 Dispositif et procédé de régulation de la pression d'huile dans un moteur à combustion Expired - Lifetime EP1076164B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19938285 1999-08-12
DE19938285A DE19938285A1 (de) 1999-08-12 1999-08-12 Einrichtung zur Regelung des Schmieröldruckes einer Brennkraftmaschine

Publications (2)

Publication Number Publication Date
EP1076164A1 EP1076164A1 (fr) 2001-02-14
EP1076164B1 true EP1076164B1 (fr) 2005-01-12

Family

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Family Applications (1)

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EP00115546A Expired - Lifetime EP1076164B1 (fr) 1999-08-12 2000-07-19 Dispositif et procédé de régulation de la pression d'huile dans un moteur à combustion

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EP (1) EP1076164B1 (fr)
DE (2) DE19938285A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7674095B2 (en) 2000-12-12 2010-03-09 Borgwarner Inc. Variable displacement vane pump with variable target regulator
US7726948B2 (en) 2002-04-03 2010-06-01 Slw Automotive Inc. Hydraulic pump with variable flow and variable pressure and electric control

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10051780A1 (de) * 2000-10-19 2002-04-25 Daimler Chrysler Ag Druckregeleinheit für einen Ölkreislauf eines Kraftfahrzeugverbrennungsmotors
DE10161131B4 (de) 2000-12-12 2013-11-07 Slw Automotive Inc. Flügelpumpe veränderlicher Verdrängung
DE10220838C1 (de) * 2002-05-08 2003-12-18 Porsche Ag Brennkraftmaschine
US6807936B1 (en) 2003-05-15 2004-10-26 Mtd Products Inc Oil pressure control valve by sliding camshaft for an internal combustion engine
WO2011070604A1 (fr) * 2009-12-07 2011-06-16 株式会社Tbk Dispositif d'alimentation en huile lubrifiante pour moteur
DE102010046316B4 (de) * 2010-09-23 2020-03-19 Audi Ag Pumpenantrieb mit Viskokupplung und mechanischer Drehzahlregelung
FR3048452B1 (fr) * 2016-03-07 2020-04-10 Renault S.A.S Gicleur de refroidissement de piston
WO2018047049A1 (fr) * 2016-09-06 2018-03-15 Tvs Motor Company Limited Système de lubrification et de refroidissement d'un moteur à combustion interne
CN112284915A (zh) * 2020-10-21 2021-01-29 天津大学 一种可调频、调压式自动打压系统及方法
CN114542231B (zh) * 2022-01-19 2023-04-18 潍柴动力股份有限公司 发动机机油压力控制方法、系统和发动机

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1120212B (de) * 1959-05-12 1961-12-21 Volkswagenwerk Ag Schmieroelkreislauf fuer Brennkraftmaschinen
US3353590A (en) * 1965-07-12 1967-11-21 Holman And Moody Inc Unitary oil filtering and cooling attachment for internal combustion engines
DE6911651U (de) * 1969-03-21 1969-07-24 Schuermann & Co Heinz Schiebefenster oder schiebetuer
DE2546273C2 (de) * 1975-10-16 1984-11-22 Audi Nsu Auto Union Ag, 7107 Neckarsulm Vorrichtung zur Regelung der Kolbenölkühlung für eine Kolbenbrennkraftmaschine
DE3033820C2 (de) * 1980-09-09 1985-10-10 Audi Nsu Auto Union Ag, 7107 Neckarsulm Einrichtung zur Regelung des Schmieröldruckes einer Brennkraftmaschine
DE3843827A1 (de) * 1988-12-24 1990-07-05 Kloeckner Humboldt Deutz Ag Brennkraftmaschine mit zwei hydraulischen fluessigkeitskreislaeufen
FR2713303B1 (fr) * 1993-11-30 1996-03-08 Vernet Sa Soupape thermostatique.
DE19631296C2 (de) * 1996-08-02 1999-06-10 Ford Global Tech Inc Vorrichtung zur Begrenzung des Öldrucks in dem Schmierölkreislauf einer Verbrennungskraftmaschine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7674095B2 (en) 2000-12-12 2010-03-09 Borgwarner Inc. Variable displacement vane pump with variable target regulator
US7726948B2 (en) 2002-04-03 2010-06-01 Slw Automotive Inc. Hydraulic pump with variable flow and variable pressure and electric control

Also Published As

Publication number Publication date
DE50009197D1 (de) 2005-02-17
EP1076164A1 (fr) 2001-02-14
DE19938285A1 (de) 2001-02-22

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