EP1076164B1 - Einrichtung und Verfahren zur Regelung des Schmieröldruckes einer Brennkraftmaschine - Google Patents
Einrichtung und Verfahren zur Regelung des Schmieröldruckes einer Brennkraftmaschine Download PDFInfo
- 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
- Authority
- 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
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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.)
Description
- Fig. 1
- eine schematische Gesamtdarstellung der erfindungsgemäßen Einrichtung zur Regelung des Schmieröldruckes nach einem ersten Ausführungsbeispiel und
- Fig. 2
- eine schematische Gesamtdarstellung der erfindungsgemäßen Einrichtung zur Regelung des Schmieröldruckes nach einem zweiten und dritten Ausführungsbeispiel.
Claims (5)
- Einrichtung zur Regelung des Schmieröldruckes einer Brennkraftmaschine, mit einem thermostatisch überwachten Öldruckregelventil, dessen Ventilkörper durch eine Druckfeder in Schließrichtung beaufschlagt ist, wobei der Ventilkörper in Abhängigkeit von der Ölfördermenge und der Öltemperatur eine Öffnung im Öldruckregelventil freigibt, über die das Öl auf die Saugseite der Ölpumpe zurückströmt, dadurch gekennzeichnet, daß das thermostatisch geregelte Öldruckregelventil (14) Mittel aufweist, durch die der Ventilkörper (16) die Öffnung (30) im Öldruckregelventil (14) mit steigender Schmieröltemperatur später freigibt, so daß der Öldruck im kalten Betriebszustand der Brennkraftmaschine abgesenkt wird.
- Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Druckfeder (24) ein Dehnstoffelement (26) in Reihe vorgeschaltet ist, das mit steigender Schmieröltemperatur die Gesamtlänge (x) von Druckfeder (24) und Dehnstoffelement (26) vergrößert.
- Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Druckfeder (24') als Thermobimetall ausgebildet ist, dergestalt, daß die Federkennlinie in Abhängigkeit von der Temperatur des Schmieröls verändert wird, indem die Federrate der Druckfeder (24') mit zunehmender Temperatur des Schmieröls vergrößert wird.
- Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Druckfeder (24") aus einer Legierung besteht, bei der ab einer bestimmten Temperatur eine Gefügeumwandlung auftritt, die dazu führt, daß die Federrate der Druckfeder (24") mit zunehmender Temperatur des Schmieröls vergrößert wird.
- Verfahren zur Regelung des Schmieröldruckes einer Brennkraftmaschine, mit einem thermostatisch überwachten Öldruckregelventil, dessen Ventilkörper duch eine Druckfeder in Schließrichtung beaufschlagt wird, wobei der Ventilkörper in Abhängigkeit von der Ölfördermenge und der Öltemperatur einer Öffnung im Öldruckregelventil freigibt, über die das Öl auf die Saugseite der Ölpumpe zurückströmt, dadurch gekennzeichnet, daß der Ventilkörper (16) die Öffnung (30) im Öldruckregelventil (14) mit steigender Schmieröltemperatur später freigibt, so daß der Öldruck im kalten Betriebszustand der Brennkraftmaschine abgesenkt wird.
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 (de) | 2001-02-14 |
EP1076164B1 true EP1076164B1 (de) | 2005-01-12 |
Family
ID=7918213
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00115546A Expired - Lifetime EP1076164B1 (de) | 1999-08-12 | 2000-07-19 | Einrichtung und Verfahren zur Regelung des Schmieröldruckes einer Brennkraftmaschine |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1076164B1 (de) |
DE (2) | DE19938285A1 (de) |
Cited By (2)
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 (9)
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 |
US6896489B2 (en) | 2000-12-12 | 2005-05-24 | Borgwarner Inc. | Variable displacement vane pump with variable target regulator |
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 |
EP2511490A4 (de) * | 2009-12-07 | 2016-04-20 | Tbk Co Ltd | Zuführungsvorrichtung für motorschmieröl |
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 (en) * | 2016-09-06 | 2018-03-15 | Tvs Motor Company Limited | Lubrication and cooling system of an internal combustion engine |
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)
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 |
-
1999
- 1999-08-12 DE DE19938285A patent/DE19938285A1/de not_active Ceased
-
2000
- 2000-07-19 EP EP00115546A patent/EP1076164B1/de not_active Expired - Lifetime
- 2000-07-19 DE DE50009197T patent/DE50009197D1/de not_active Expired - Lifetime
Cited By (2)
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 |
DE19938285A1 (de) | 2001-02-22 |
EP1076164A1 (de) | 2001-02-14 |
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