WO2018103870A1 - Module de soupape pour circuit d'huile d'un moteur à combustion interne - Google Patents

Module de soupape pour circuit d'huile d'un moteur à combustion interne Download PDF

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Publication number
WO2018103870A1
WO2018103870A1 PCT/EP2017/001116 EP2017001116W WO2018103870A1 WO 2018103870 A1 WO2018103870 A1 WO 2018103870A1 EP 2017001116 W EP2017001116 W EP 2017001116W WO 2018103870 A1 WO2018103870 A1 WO 2018103870A1
Authority
WO
WIPO (PCT)
Prior art keywords
oil
valve
bypass
opening
flow
Prior art date
Application number
PCT/EP2017/001116
Other languages
German (de)
English (en)
Inventor
Markus Sander
Lionel Le Clech
Thomas Seemüller
Original Assignee
Daimler 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 Daimler Ag filed Critical Daimler Ag
Publication of WO2018103870A1 publication Critical patent/WO2018103870A1/fr

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
    • F01M1/16—Controlling lubricant pressure or quantity
    • 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
    • F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
    • F01M5/005—Controlling temperature of lubricant

Definitions

  • Valve module for an oil circuit of an internal combustion engine
  • the invention relates to a valve module for an oil circuit a
  • thermostats are used to regulate media temperatures. With the aid of these thermostats, it is generally possible to pass respective media streams through a media cooler or to pass them past the media cooler.
  • Such thermostats may be formed, for example, as a coolant or oil thermostats, the latter may be involved in oil circuits of internal combustion engines. In particular, in such oil circuits and check valves are used, which should prevent that occurs at an engine stop unwanted emptying of the oil circuit. In a subsequent engine start can by maintaining an oil filling of the
  • a thermostatic pressure relief valve in which a cylindrical valve member, a helical compression spring and a cylindrical expansion element are inserted one behind the other into a, opening into a flow passage bore of a valve housing of the thermostatic pressure relief valve.
  • this flows into the bore and thereby moves the cylindrical valve member against a spring force of the helical compression spring until the cylindrical valve member releases a discharge opening in the valve housing, through which finally the fluid can escape from the valve housing.
  • an oil-coolant module which has a housing with an oil thermostatic receptacle. Furthermore, the housing has a first receiving space for an oil filter and a second receiving space for an oil-water heat exchanger.
  • Object of the present invention is to provide a valve module for an oil circuit of an internal combustion engine of the type mentioned, which has a particularly high functionality.
  • the invention is based on a valve module for an oil circuit
  • An internal combustion engine having a valve housing which has an oil inlet opening for introducing a main oil flow into a housing interior of the valve housing, an oil outlet opening for discharging a control oil flow from the housing interior, and a first bypass opening arranged between the oil inlet opening and the oil outlet, for discharging a first bypass oil flow, and with a valve spool, which for adjusting the control oil flow and the first bypass oil flow between the oil inlet opening and the oil outlet opening at least between a blocking position in which the valve spool covers the first bypass opening, in a first bypass position, in which the valve spool flows through the first
  • the valve spool may be formed, for example, as a valve piston.
  • valve slide can be displaceable axially along the valve housing.
  • the valve housing, the valve slide and the spring element can form a so-called main valve stage of the valve module.
  • the control oil flow can be supplied to a, an oil pan of the oil circuit, and thus correspond to engine oil flow to be diverted.
  • the control oil flow can depend both on the extent to which the valve spool covers the first bypass opening, as well as how the pilot valve is actuated, that is, whether the pilot valve is open or closed, for example.
  • valve slide as
  • Thermostatic slide is formed and has a first slide opening, which releases in the first bypass position, the passage of the first bypass oil flow through the first bypass opening and a second slide opening, which releases in a second bypass position of the valve spool, a flow of a second bypass oil flow through a second bypass opening of the valve housing.
  • the valve module on the one hand act as a pressure relief valve and on the other hand can also take over thermostat functions.
  • the valve module has a particularly high functionality compared to systems known from the prior art, in which pressure-limiting valves and thermostat are formed separately.
  • two functions can be integrated in one component. This is advantageously accompanied by a cost reduction and reduction of a number of components in the oil circuit.
  • first bypass oil flow or the second bypass oil flow can be conducted to the internal combustion engine via a main oil passage in order to communicate with them
  • the valve module allows a load-dependent oil pressure control
  • pilot valve designed as a solenoid valve pilot valve can be controlled via an engine control unit of the internal combustion engine.
  • the oil outlet opening can be oil-conducting connected to the oil pan by means of the pilot valve.
  • the pilot valve can therefore allow an oil return into the oil pan, whereby the control oil flow exiting via the oil outlet opening can be adjustable by actuating the pilot valve.
  • About the oil inlet opening of the main oil flow can be promoted by means of an oil pump from the oil pan into the housing interior of the valve housing.
  • the valve spool covers the first bypass opening in its second bypass position and the second bypass opening in its first bypass position. This is advantageous, since in this way a particularly targeted guiding of the main oil flow in the form of the first bypass oil flow or of the second bypass oil flow is made possible.
  • valve module has a pilot-connected to the ⁇ lauslassö réelle pilot valve for adjusting the control oil flow and the valve spool is in response to an operating condition of the pilot valve against the spring force and in dependence on the main oil pressure in at least one of
  • Bypass positions displaced to release an outflow of the respective bypass oil flow are advantageous, since a particularly accurate metering (regulation) of the respective bypass oil flow to be supplied to the internal combustion engine is made possible by such a pilot valve.
  • the valve spool can be positioned in the first bypass position by closing the pilot valve as well as by the main oil pressure, which can act counter to the spring force.
  • the closed pilot valve can be a Abvien the control oil flow, so feeding the
  • At least part of the main oil flow can be via the second slide opening and the second bypass opening as the second bypass oil flow, for example in the form of a low-temperature engine oil flow
  • the pilot valve is arranged in the valve housing. This is advantageous since the valve module can thereby be made particularly compact and lightweight.
  • a check valve for preventing a backflow of the control oil flow in the direction of the oil inlet opening is provided at the throughflow opening. This is advantageous because this check valve makes it possible to provide the control oil flow with a flow rate dependent on the respective opening forces of the check valve.
  • the check valve may be closed, for example, in the blocking position and in the respective
  • a leakage bore is provided in a region of the oil outlet opening which has a smaller diameter than the oil outlet opening. This is advantageous because, in the case of possible malfunctions of the valve module, it is also possible to return engine oil to the fluid circuit, for example into the oil sump, via the leakage bore. As a result, further, for example, any overpressure-related damage can be avoided.
  • the area can correspond to a housing area in which the spring element can be arranged.
  • Fig. 1 is a schematic representation of an exemplary of the invention
  • FIG. 2 is a further schematic representation of the valve module, wherein the
  • Valve spool is positioned in a first bypass position
  • Fig. 3 is a further schematic representation of the valve module, wherein the
  • Valve spool is positioned in a second bypass position.
  • valve module 10 for an oil circuit 12 of an internal combustion engine 52 shown only in FIG.
  • valve module 10 and the internal combustion engine 52 may in the
  • an oil heater may be integrated into the oil circuit 12, although this is not shown here.
  • the valve module 10 comprises a valve housing 14 which has an oil inlet opening 16 for introducing a main oil flow 18 into a housing interior 20 of the valve housing 14, an oil outlet opening 22 for discharging a controlled oil flow 24 from the housing
  • the discharge of the first bypass oil stream 28 is shown in FIG. 2.
  • valve housing 14 has a, likewise between the oil inlet 16 and the oil outlet 22 and in a, by an arrow direction of
  • Bypass opening 26 disposed second bypass opening 50, via which a shown in Fig. 3, second bypass oil flow 48 from the housing interior 20 of the valve housing 14 and the internal combustion engine 52 can be fed by mediation of an oil cooler 70 shown only in Fig. 1.
  • the valve module 10 also includes a valve spool 30, which for adjusting the control oil flow 24 (for setting a control pressure of the control oil flow) and the two Bypass oil streams 28, 48 between the oil inlet opening 16 and the oil outlet opening 22 at least between a blocking position shown in FIG. 1, in which the valve spool 30, the two bypass openings 26, 50, and respective, the bypass openings
  • the valve slide 30 in the present case has two opposing first
  • first bypass position 32 at least one of the first slide openings 42 allows the first bypass oil flow 28 to flow through the first bypass opening 26.
  • second bypass position 46 at least one of the second slide openings 44 allows the second bypass oil flow 48 to flow through the second bypass opening 50 of the valve housing 14
  • the valve spool 30 further has one, the oil inlet 16 and the oil outlet 22 oil-conducting
  • Check valve 60 for preventing backflow of the control oil flow 24 in the direction of the oil inlet opening 16 is provided.
  • valve spool 30 may be in addition to the locking position and the respective
  • Bypass positions 32, 46 are also generally displaced into a plurality of different, but not shown here intermediate positions. Accordingly, in a first intermediate position, it is possible for the first bypass oil flow 28 to be led out via one of the first slide openings 42 and the first bypass opening 26 in the direction of the internal combustion engine 52. At the same time, an outflow from the two discharge openings 27, 51 (and thus a return flow of oil in the oil pan 54) blocked by the valve spool 30, so it can be prevented.
  • Bypass opening 50 in the direction of the internal combustion engine 52 may be possible, at the same time the outflow from the two Abêtö Maschinenen 27, 51 (and thus a Backflow of oil in the oil pan 54) blocked by the valve spool 30, so can be prevented.
  • the valve module 10 further comprises a spring element 36, by means of which a, dependent on a main oil pressure of the main oil flow 18 spring force for displacing the valve spool 30 between the valve housing 14 and the valve spool 30 is transferable to the valve spool 30 between the locking position and the respective bypass positions 32nd , 46 or the intermediate positions to move.
  • a leakage hole 62 is provided, which has a smaller diameter than the ⁇ lauslassö réelle 22.
  • the area 64 generally corresponds to a housing portion of the
  • Valve housing 14 in which the spring element 36 is received In which the spring element 36 is received.
  • the area 64 is generally limited by the valve housing 14 and the valve slide 30.
  • An interior of the region 64, in which the spring element 36 is received, is, as can be seen from the combination of FIG. 2 with FIG. 3, by the displacement of the valve spool 30 variable.
  • Valve module 10 includes a pilot valve 38 oil-conductively coupled to oil discharge port 22 for adjusting the control oil flow 24, and valve spool 30 is biased against the spring force and depending on the main oil pressure in response to a respective operating condition of pilot valve 38
  • the pilot valve 38 may be arranged by slight modification of the valve housing 14 in this, although this is not shown in detail here.
  • FIG. 1 shows the valve module 10 in an idle state, in which the valve slide 30 closes the respective bypass openings 26, 50 in the said blocking position and the check valve 60 closes the throughflow opening 34.
  • the main oil pressure of the main oil flow 18 is therefore not sufficient to open the check valve 60, which accordingly no engine oil to the oil outlet 22 and thus reaches the pilot valve 38.
  • FIG. 2 shows the valve module 10 in a first operating state, in which the valve slide 30 is positioned in the first bypass position 32.
  • the first bypass opening 26 may also be referred to as Kaltölauslass over which, for example, during a warm-up phase of the internal combustion engine 52, the first bypass oil flow 28 as a cold oil stream and as part of the main oil stream 18 can be discharged from the housing interior 20 and guided in the direction of the internal combustion engine 52 , A remaining oil content of the main oil flow 18 presses the check valve 60 and thus enters the interior of the region 64. Since the pilot valve 38 may be closed during the warm-up phase of the internal combustion engine 52 (see FIG. 2), this oil fraction flows out of the region 64 exclusively the leakage hole 62 back into the oil pan 54th
  • FIG. 3 shows the valve module 10 in a second operating state, in which the valve slide 30 is positioned in the second bypass position 46.
  • the second bypass opening 50 can also be referred to as a hot oil outlet, via which, when the internal combustion engine 52 is warm, the second bypass oil stream 48 can be discharged from the housing interior 20 as a warm oil stream and as part of the main oil stream 18 and directed in the direction of the internal combustion engine 52.
  • a further remaining oil content of the main oil stream 18 can press the check valve 60 and thus reach the interior of the area 64. Since the pilot valve 38 in the operating temperature of the
  • Internal combustion engine 52 may be open, for example due to a control by means of an engine control unit not shown here (see Fig. 3), at least a subset of the oil content of the main oil stream 18 passes as the
  • the present valve module 10 assumes the function of a check valve or pressure relief valve and the function of a thermostat in a component and therefore has a particularly high functionality.
  • the valve spool 30, which can also be referred to as a main spool, can thus be designed so that it performs the two functions check valve, or pressure relief valve and thermostatic valve. LIST OF REFERENCE NUMBERS

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Temperature-Responsive Valves (AREA)

Abstract

L'invention concerne un module (10) de soupape pour un circuit d'huile (12) d'un moteur à combustion interne (52), un tiroir (30) de soupape étant logé dans un carter (14) de soupape et pouvant se déplacer entre une position de verrouillage et différentes positions de dérivation (32, 46). Le tiroir (30) de soupape est réalisé sous la forme d'un tiroir thermostatique et présente des ouvertures (42, 44) respectives, par l'intermédiaire desquelles des flux d'huile (28, 48) de dérivation respectifs peuvent être évacués du carter (14) de soupape dans les différentes positions (32, 46) de dérivation.
PCT/EP2017/001116 2016-12-09 2017-09-20 Module de soupape pour circuit d'huile d'un moteur à combustion interne WO2018103870A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016014718.0A DE102016014718A1 (de) 2016-12-09 2016-12-09 Ventilmodul für einen Ölkreislauf einer Verbrennungskraftmaschine
DE102016014718.0 2016-12-09

Publications (1)

Publication Number Publication Date
WO2018103870A1 true WO2018103870A1 (fr) 2018-06-14

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Application Number Title Priority Date Filing Date
PCT/EP2017/001116 WO2018103870A1 (fr) 2016-12-09 2017-09-20 Module de soupape pour circuit d'huile d'un moteur à combustion interne

Country Status (2)

Country Link
DE (1) DE102016014718A1 (fr)
WO (1) WO2018103870A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4098850A1 (fr) * 2021-05-31 2022-12-07 MANN+HUMMEL GmbH Système de thermostat électrohydraulique, dispositif filtrant et procédé de régulation de la température d'un fluide de travail

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018200392A1 (de) * 2018-01-11 2019-07-11 Mahle International Gmbh Ölkreislauf einer Brennkraftmaschine mit elektromagnetischem Bypassventil

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008032494A1 (de) 2008-07-05 2009-02-12 Daimler Ag Öl-Kühlmittel-Modul
DE102009023824A1 (de) 2009-06-04 2010-12-16 Audi Ag Thermostat-Druckbegrenzungsventil, selbstregelnde Fluidpumpe und Schmierölkreislauf einer Brennkraftmaschine
WO2015172792A1 (fr) * 2014-05-12 2015-11-19 Volvo Truck Corporation Vanne de régulation de fluide
EP2955424A1 (fr) * 2013-02-05 2015-12-16 Taiho Kogyo Co., Ltd Dispositif de réglage de quantité d'huile

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008032494A1 (de) 2008-07-05 2009-02-12 Daimler Ag Öl-Kühlmittel-Modul
DE102009023824A1 (de) 2009-06-04 2010-12-16 Audi Ag Thermostat-Druckbegrenzungsventil, selbstregelnde Fluidpumpe und Schmierölkreislauf einer Brennkraftmaschine
EP2955424A1 (fr) * 2013-02-05 2015-12-16 Taiho Kogyo Co., Ltd Dispositif de réglage de quantité d'huile
WO2015172792A1 (fr) * 2014-05-12 2015-11-19 Volvo Truck Corporation Vanne de régulation de fluide

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4098850A1 (fr) * 2021-05-31 2022-12-07 MANN+HUMMEL GmbH Système de thermostat électrohydraulique, dispositif filtrant et procédé de régulation de la température d'un fluide de travail

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Publication number Publication date
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