EP1420148B1 - Module pour delivrer fluide ayant pression constante - Google Patents

Module pour delivrer fluide ayant pression constante Download PDF

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Publication number
EP1420148B1
EP1420148B1 EP03104157A EP03104157A EP1420148B1 EP 1420148 B1 EP1420148 B1 EP 1420148B1 EP 03104157 A EP03104157 A EP 03104157A EP 03104157 A EP03104157 A EP 03104157A EP 1420148 B1 EP1420148 B1 EP 1420148B1
Authority
EP
European Patent Office
Prior art keywords
liquid
pressure
duct
pressure regulating
regulating valve
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
EP03104157A
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German (de)
English (en)
Other versions
EP1420148A2 (fr
EP1420148A3 (fr
Inventor
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
Mann and Hummel GmbH
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Filing date
Publication date
Application filed by Mann and Hummel GmbH filed Critical Mann and Hummel GmbH
Publication of EP1420148A2 publication Critical patent/EP1420148A2/fr
Publication of EP1420148A3 publication Critical patent/EP1420148A3/fr
Application granted granted Critical
Publication of EP1420148B1 publication Critical patent/EP1420148B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 fluid module, in particular an oil module for an internal combustion engine, for generating a fluid pressure according to the preamble of claim 1. Furthermore, the invention relates to a method for generating constant fluid pressures according to claim 8.
  • oil modules known in the art, which are provided for controlling an oil pressure in an oil circuit for cooling piston of an internal combustion engine.
  • the oil serves as a coolant and is sprayed onto the piston to be cooled.
  • the cooling oil jet must always hit each piston at the same cooling point to provide effective cooling. Therefore, the oil pressure in this area of the oil circuit must be constant.
  • Various components, such as the oil pump generate different pressures depending on the load condition. So that the oil jet impinging on the pistons is not exposed to these pressure fluctuations, two valves are arranged in the oil module, which compensate for the pressure differences.
  • the first valve is an on / off valve and the second valve is a control valve.
  • the oil pressure generated by the oil pump is applied to this on / off valve.
  • this valve opens a passage and allows the oil to flow with the total oil pressure to the control valve.
  • the ON / OFF valve remains closed, since in this operating condition, a cooling of the piston is not desirable.
  • the control valve is disposed in the fluid passageway coming from the ON / OFF valve and has a piston area and a throttle area. The piston area is connected to the fluid channel via a control channel. Thus, the same pressure prevails at the piston area as in the fluid channel.
  • the piston is lifted and the throttle area of the control valve reduces the cross-sectional area of the fluid channel, whereby less oil can flow through the fluid channel and the oil pressure after the control valve is thus reduced to the predetermined oil pressure.
  • a disadvantage of the known oil module are the high cost of the two valves, as well as the complex installation of the two valves in the oil module.
  • the object of the invention is thus the reduction of the number of components, as well as the cost. This object is solved by the features of claim 1.
  • the invention relates to a liquid module according to claim 1 and a method according to claim 8.
  • the liquid module according to the invention serves to generate constant liquid pressures in liquid systems.
  • Such liquid modules may e.g. used in fuel / water pipes or in oil circuits in which constant pressures are required, in which case the use of the liquid module in the piston cooling of internal combustion engines is a particular use.
  • the liquid module has an inlet through which the liquid enters the liquid module and a Outlet through which the liquid emerges from the liquid module on.
  • the inlet is connected via a fluid channel corresponding to the outlet.
  • a valve is arranged, wherein the valve is a pressure regulating valve. In a first position, the pressure control valve completely closes the fluid channel. This first position assumes the pressure control valve when the fluid pressure is below a defined fluid pressure.
  • the defined fluid pressure is dependent on the fluid pressure required in the fluid system. He can e.g. be 2.8 bar in the case of the piston cooling, this pressure must be constant and to cool the piston effectively. Below the defined fluid pressure, the pressure control valve must be closed, otherwise the fluid system will not work properly. In the case of piston cooling, e.g. For example, the jet of oil would hit the piston at a location unsuitable for cooling, resulting in high oil loss without effective cooling or even piston damage.
  • the pressure regulating valve in a second position opens the fluid channel and allows the fluid to flow at least partially to the outlet. This second position can take any intermediate position in which liquid can flow through the pressure control valve.
  • the pressure regulating valve is connected to the fluid channel via an ON / OFF channel and a pressure regulating channel.
  • the ON / OFF channel is connected upstream of the pressure regulating valve. In this ON / OFF channel, the fluid pressure that enters the fluid module through the inlet prevails.
  • the pressure control channel is downstream with connected to the pressure control valve. In this pressure control channel, a fluid pressure is present only when the fluid pressure in the ON / OFF channel exceeds the defined fluid pressure.
  • the applied in the pressure control channel fluid pressure can reach the maximum, prevailing in the ON / OFF channel pressure, the pressure prevailing in the pressure control channel fluid pressure is usually less.
  • the pressure regulating valve fulfills the function of an ON / OFF valve and the function of a control valve, thus the number of components required for the function of the liquid module is reduced. Furthermore, the assembly effort is reduced because only a single valve must be mounted.
  • other components such as liquid filter or liquid cooler can be integrated.
  • the liquid filters may be arranged before or after the pressure regulating valve and remove impurities from the liquid.
  • the liquid coolers can also be arranged before or after the pressure regulating valve, wherein they can reduce the temperature of the liquid to a defined temperature.
  • the liquid filter can be designed as a removable cartridge, which has a filter housing which can be screwed to the housing, for example. However, embodiments are also conceivable in which the liquid module has an openable volume into which a filter element can be inserted.
  • the pressure regulating valve has a piston area which is connected to the on / off channel.
  • the piston area is designed in such a way that the fluid pressure prevailing in the ON / OFF channel reliably lifts the piston area of the pressure regulating valve from its piston seat when the defined fluid pressure is exceeded.
  • the piston region can have a plurality of surface regions which come into contact with the liquid and the liquid pressure one after the other.
  • the pressure regulating valve can perform a predefined movement as a function of the fluid pressure.
  • a development of the invention provides that the piston region of the pressure regulating valve has an internal volume which can be connected via an opening to the ON / OFF channel.
  • the breakthrough is arranged in the wall bounding the inner volume, wherein the breakthrough may be arranged on the circumference or in the end faces.
  • the liquid enters the interior of the piston area, as a result of which the fluid pressure in the interior volume of the piston area is not exposed to any flow and is therefore not exposed to any disturbing factors.
  • the inner volume of the piston area can be designed arbitrarily, wherein advantageous embodiments provide a cylindrical or cuboid configuration.
  • the pressure regulating valve has a throttle region, wherein the liquid channel is variable in a partial region of its cross section through the throttle region.
  • Part of the throttle area has a smaller cross section than the channel surrounding it. This smaller cross section may e.g. cylindrical, conical or other shapes.
  • the throttle region In its end region, the throttle region has a closure which can completely close the channel surrounding it. Through the throttle area, the flow rate of the liquid to regulate, which can then also be adjusted by the outlet pressure exiting.
  • the internal volume of the piston area can be connected via a passage to the pressure regulating channel.
  • This passage can be arranged on the circumference or in the end faces of the piston area.
  • the inner volume of the piston area is connected in a first position exclusively with the ON / OFF channel and in a second position exclusively communicating with the pressure control channel.
  • either the fluid pressure of the ON / OFF channel or the fluid pressure of the pressure control channel acts on the piston area, whereby defined pressure conditions are given.
  • a separation of the ON / OFF channel is maintained by the pressure control channel, whereby no by-pass of the liquid is caused by the throttle region over.
  • a further embodiment of the liquid module according to the invention provides that the throttling region of the pressure regulating valve adjoins the piston region and that the pressure regulating valve has a piston seat region which defines an end region of the pressure regulating valve.
  • a pressure regulating valve is provided. At a liquid pressure which is lower than the defined minimum liquid pressure, the pressure regulating valve remains closed.
  • the pressure regulating valve is connected via an ON / OFF channel with the liquid line coming from the inlet.
  • the pressure regulating valve at least partially opens a throttle bore, whereby at least parts of the liquid can flow past the pressure regulating valve in the direction of the outlet. In this case, the liquid penetrates into a pressure control channel a, which is also connected to the pressure control valve.
  • the pressure control valve adjusts the permissible flow rate of the liquid.
  • the pressure regulating valve opens only a small cross section and at pressures which are only slightly above the minimum liquid pressure, the pressure regulating valve opens a larger cross section.
  • an oil circuit is shown schematically.
  • the oil circuit which is provided for cooling piston 10 of an internal combustion engine 11, has an oil pan 12, an oil pump 13 and an oil module 14.
  • the oil pump 13 delivers oil from the oil pan 12 to the oil module 14, wherein the oil pump can of course also be arranged in the oil pan 12.
  • the oil pump 13 promotes more or less oil from the oil pan 12, whereby the oil pressure in one, the oil pump 13 to the oil module 14 connecting oil line 15 is not constant.
  • the oil module 14 regulates the oil pressure and leads the piston 10 of the internal combustion engine 11 via the supply line 16 oil at a constant Oil pressure of eg 2.8 bar too.
  • the oil is injected onto the pistons 10 to reduce the temperature in the pistons 10.
  • the oil runs out of the internal combustion engine 11 and is supplied via a return line 17 of the oil pan 12 again.
  • the oil can of course be passed through an oil cooler (not shown) so as not to heat the oil in the oil pan 12.
  • FIG. 2 shows a section of an oil module 14 in section.
  • the oil module 14 has a housing 18 which has an inlet 19 and an outlet 20.
  • the inlet 19 is connected to the outlet 20 via an oil passage 21.
  • a pressure regulating valve 22 is disposed in the oil passage 21, the pressure regulating valve 22 being shown in the OPEN position.
  • the pressure regulating valve 22 is formed by a valve body 27 and a helical valve spring 23.
  • the valve spring 23 is compressed in the open position, since the valve body 27 presses on the valve spring 23.
  • other components such as foams or elastomers could be used, which could also fulfill the tasks of the valve spring 23.
  • the valve spring 23 is arranged in a spring seat 24, wherein the spring seat 24 is closed by a plug 25. Furthermore, the spring seat 24 has a vent hole 26 through which air can escape from the spring seat 24 or flow when the valve body 27 is moved.
  • the valve body 27 has a piston region 28, a throttling region 29 and a closure region 30.
  • the piston region 28 has a cylindrical inner volume 31, which in the opened state is connected via a passage 32 on its end face to a pressure regulating channel 33. In the closed position of the pressure control valve 22, the connection between the pressure control channel 33 and the inner volume 31 of the piston area 28 is interrupted, since the piston area 28 rests in its piston seat 34 (see FIG. 3).
  • the throttle region 29 is formed in part by the outer contour of the piston region 28.
  • a connecting rod 35 is arranged in the throttle region 29, which connects the piston region 28 with the closure region 30.
  • the oil may flow around the connecting rod 35 because the cross section of the oil passage 21 is larger than the cross section of the connecting rod 35.
  • the shutter portion 30 is partially immersed in the spring seat 24 in the open position of the pressure regulating valve 22, thus releasing the oil passage 21 ,
  • the plug 36 is provided to close the receptacle in which the pressure regulating valve 22 is arranged.
  • the oil flow entering through the inlet 19 into the oil module has an oil pressure which is above the defined minimum oil pressure, therefore the piston region 28 is lifted off the piston seat 34 and the pressure control channel 33 is connected to the internal volume 31 of the piston region 28.
  • the pressure prevailing in the pressure control passage 33 oil pressure presses on the piston portion 28 and pushes the valve body 27 against the force of the valve spring 23 in a position in which the throttle portion 29 projects into the oil passage 21 and the oil can flow through the pressure control valve 22 to the outlet 20.
  • the closure region 30 is lifted off by a throttle bore 37 arranged in the housing 18 and the oil can flow through.
  • the oil enters inter alia in the pressure control passage 33, whereby the oil pressure contained in the pressure control passage 33 enters the inner volume 31 of the piston area 28 and controls the position of the valve body 27.
  • the pressure in the pressure control passage 33 acts on the piston area 28 such that the valve body 27 is pressed far against the valve spring 23.
  • the closure portion 30 dives far into the spring seat 24.
  • the throttle portion 29 is guided against the throttle bore 37, whereby a smaller amount of oil can pass through the throttle bore 37 therethrough. Since a smaller amount of oil after the pressure control valve 22 has a lower oil pressure result, the pressure control valve 22 opens the throttle bore 37 again somewhat. In this way, a constant pressure is generated by the pressure control valve 22 downstream, which is supplied through the outlet 20 to its intended use.
  • FIG. 3 shows the oil module 14 according to FIG. 2 in a section offset by 90 °. 2 corresponding components are provided with the same reference numerals.
  • the inlet 19 and the outlet 20 are located in front of and behind the illustrated sectional plane.
  • the pressure control valve 22 is shown in the closed position, in which the closure portion 30 of the valve body 27, the throttle bore 37 closes.
  • the oil passage 21 connected to the inlet (not shown) surrounds the shutter portion 30.
  • an ON / OFF channel 38 is disposed between the piston portion 28 of the valve body 27 and the oil passage 21, an ON / OFF channel 38 is disposed. In this ON / OFF channel 38 there is the same oil pressure as in the oil passage 21.
  • the piston portion 28 has openings 39 through which the oil from the ON / OFF channel 38 can penetrate into the internal volume 31 of the valve body 27.
  • a valve body 27 is shown in section.
  • the Figures 2 and 3 corresponding components are provided with the same reference numerals.
  • the individual levels A, B, C must be coordinated with one another in such a way that the pressure acting on the respective surface has the required effect.
  • the position of the apertures 39 is adapted to the housing 18 such that either the ON / OFF channel or the pressure control channel is connected to the internal volume 31 of the valve body.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Fluid Pressure (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Claims (8)

  1. Module de liquide (14) pour produire des pressions de liquide constantes, en particulier un module d'huile pour produire une pression d'huile constante pour le refroidissement d'un moteur à combustion interne, présentant une admission (19) et une sortie (20),
    - l'admission (19) étant reliée à la sortie (20) de manière correspondante par un canal de liquide (21),
    - une soupape étant disposée dans le canal de liquide (21),
    caractérisé en ce que
    la soupape est une soupape modulatrice de pression (22) reliée au canal de liquide (21) par un canal OUVERT/FERMÉ (38) et un canal modulateur de pression (33), le canal OUVERT/FERMÉ (38) étant relié, côté amont, à une surface de la soupape modulatrice de pression (22) et le canal de pression (33) étant relié, côté aval, à la même surface de la soupape modulatrice de pression (22), cette soupape modulatrice de pression (22) ayant
    - une première position qui ferme entièrement le canal de liquide (21) en dessous d'une pression de liquide définie, et
    - une deuxième position ouvrant partiellement au-dessus d'une pression de liquide définie, le canal de liquide (21), et permettant à la soupape modulatrice de pression (22) de régler toutes les régulations intermédiaires.
  2. Module de liquide (14) selon la revendication 1,
    caractérisé en ce que
    la soupape modulatrice de pression (22) dispose d'une zone de piston (28) reliée au canal OUVERT/FERMÉ (38).
  3. Module de liquide (14) selon la revendication 2,
    caractérisé en ce que
    la zone de piston (28) dispose d'un volume interne (31) que l'on peut relier au canal OUVERT/FERMÉ (38) par un passage (36).
  4. Module de liquide (14) selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    la soupape modulatrice de pression (22) présente une zone d'étranglement (29), le canal de liquide (21) pouvant avoir une section transversale variable grâce à la zone d'étranglement (29).
  5. Module de liquide (14) selon la revendication 3 ou selon la revendication 4 rapportée à la revendication 3,
    caractérisé en ce qu'
    on peut relier le volume interne (31) de la zone de piston (28) au canal modulateur de pression (33) par un passage (32).
  6. Module de liquide (14) selon une revendication rapportée à la revendication 3,
    caractérisé en ce que
    le volume interne (31) de la zone de piston (28) est relié de manière à communiquer exclusivement avec le canal OUVERT/FERMÉ (38) dans la première position et exclusivement avec le canal modulateur de pression (33) dans la deuxième position.
  7. Module de liquide (14) selon au moins les revendications 4 à 6 rapportées à la revendication 2,
    caractérisé en ce que
    la zone d'étranglement (29) de la soupape modulatrice de pression (22) est raccordée à la zone de piston (28) et la soupape modulatrice de pression (22) présente une zone de siège de piston (34) qui définit une position finale de la soupape modulatrice de pression.
  8. Procédé pour produire des pressions de liquide constantes dans un module de liquide (14) selon l'une quelconque des revendications précédentes,
    caractérisé en ce qu'
    - une soupape modulatrice de pression (22) est disposée dans un canal de liquide (21) et une surface de cette soupape (22) est reliée côté amont à un canal OUVERT/FERMÉ et la même surface de la soupape (22) est reliée côté aval à un canal modulateur de pression (33),
    - la soupape modulatrice de pression (22) ferme entièrement le canal de liquide (21) lorsque les pressions de liquide se trouvent en dessous d'une pression de liquide définie, et
    - la soupape modulatrice de pression (22) ouvre au moins partiellement le canal de liquide (21) lorsque les pressions de liquide se trouvent au-dessus de la pression de liquide définie, l'ouverture du canal de liquide (21) s'effectue en fonction de la pression de liquide régnante, la soupape modulatrice de pression (22) continue à ouvrir la section du canal de liquide (21) lorsque les pressions de liquide se trouvent seulement un peu au-dessus de la pression de liquide définie, et n'ouvre que légèrement la section du canal de liquide (21) lorsque les pressions de liquide se trouvent largement au-dessus de la pression de liquide définie.
EP03104157A 2002-11-15 2003-11-12 Module pour delivrer fluide ayant pression constante Expired - Lifetime EP1420148B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10253576A DE10253576A1 (de) 2002-11-15 2002-11-15 Flüssigkeitsmodul
DE10253576 2002-11-15

Publications (3)

Publication Number Publication Date
EP1420148A2 EP1420148A2 (fr) 2004-05-19
EP1420148A3 EP1420148A3 (fr) 2005-06-01
EP1420148B1 true EP1420148B1 (fr) 2006-05-31

Family

ID=32115560

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03104157A Expired - Lifetime EP1420148B1 (fr) 2002-11-15 2003-11-12 Module pour delivrer fluide ayant pression constante

Country Status (4)

Country Link
EP (1) EP1420148B1 (fr)
AT (1) ATE328193T1 (fr)
DE (2) DE10253576A1 (fr)
ES (1) ES2263917T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005050063A1 (de) * 2005-10-19 2007-04-26 Bayerische Motoren Werke Ag Druckregeleinheit
CN115163242A (zh) * 2022-07-22 2022-10-11 中车戚墅堰机车有限公司 一种新型机油调节阀

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB593035A (en) * 1945-02-01 1947-10-07 Aspin Frank Metcalfe Improvements in or relating to lubrication systems of internal combustion engines
US2072180A (en) * 1933-11-13 1937-03-02 Packard Motor Car Co Internal combustion engine
GB1087974A (en) * 1964-11-10 1967-10-18 Continental Aviat & Eng Corp Improvements in fuel systems for internal-combustion engines
US4262775A (en) * 1979-05-07 1981-04-21 Ingersoll-Rand Company Oil supply means for a machine
JPS57173513A (en) * 1981-04-17 1982-10-25 Nippon Soken Inc Variable valve engine
JPS6060380A (ja) * 1983-09-14 1985-04-06 Hokkaido Suido Kizai Kk 水道用定圧弁
US4860856A (en) * 1988-06-28 1989-08-29 Esslinger Dwaine E Oil pressure adjustment device for engines
RU2194168C2 (ru) * 1997-12-23 2002-12-10 Открытое акционерное общество Холдинговая компания "Барнаултрансмаш" Система смазки двигателя внутреннего сгорания

Also Published As

Publication number Publication date
EP1420148A2 (fr) 2004-05-19
ATE328193T1 (de) 2006-06-15
DE10253576A1 (de) 2004-05-27
DE50303555D1 (de) 2006-07-06
ES2263917T3 (es) 2006-12-16
EP1420148A3 (fr) 2005-06-01

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