WO2007031047A1 - Soupapes pour buses de refroidissement pour piston - Google Patents

Soupapes pour buses de refroidissement pour piston Download PDF

Info

Publication number
WO2007031047A1
WO2007031047A1 PCT/DE2006/001255 DE2006001255W WO2007031047A1 WO 2007031047 A1 WO2007031047 A1 WO 2007031047A1 DE 2006001255 W DE2006001255 W DE 2006001255W WO 2007031047 A1 WO2007031047 A1 WO 2007031047A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
oil
cooling nozzles
piston cooling
valve according
Prior art date
Application number
PCT/DE2006/001255
Other languages
German (de)
English (en)
Inventor
Heiko Schulz-Andres
Original Assignee
Ixetic Hückeswagen Gmbh
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 Ixetic Hückeswagen Gmbh filed Critical Ixetic Hückeswagen Gmbh
Priority to EP06775712A priority Critical patent/EP1929130B1/fr
Priority to DE112006002368T priority patent/DE112006002368A5/de
Priority to DE502006008042T priority patent/DE502006008042D1/de
Priority to AT06775712T priority patent/ATE483895T1/de
Publication of WO2007031047A1 publication Critical patent/WO2007031047A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/06—Arrangements for cooling pistons
    • F01P3/08—Cooling of piston exterior only, e.g. by jets
    • 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
    • F01M1/08—Lubricating systems characterised by the provision therein of lubricant jetting means

Definitions

  • the invention relates to a valve for controlling an oil flow for piston cooling nozzles in the lubricating oil circuit of an internal combustion engine.
  • valves are known.
  • a type of pressure limiting valves is used for this, so that the volume flow, which is to flow through the piston cooling nozzles, only above a certain pressure (usually 2 bar) flows.
  • a certain pressure usually 2 bar
  • the disadvantage of this solution is that at very high temperatures in conjunction with low speeds, the pistons are not cooled because at low speeds, these pressures are not achieved by low pump performance and high leaks. Cooling at high temperatures and low rotational speeds would also be particularly helpful after high engine loads, since the pistons heat up in this reheating phase, although no further energy is supplied thermodynamically.
  • Piston cooling nozzles are used today in internal combustion engines, where due to the high power density overheating of the reciprocating piston can occur. To do this, the piston cooling nozzles inject engine oil from below onto the pistons. In order to achieve the required cooling capacity, a correspondingly large volume flow of the oil is necessary. At low speeds, this can lead to the total volume flow of the lubricating oil pump being insufficient to cover all these consumers.
  • a new, additional application for the piston cooling nozzles is to use them for oil heating in cold oil.
  • the ⁇ lericarmung generated via the pressure relief valve of the piston cooling nozzles is Another possibility.
  • electrically controlled valves which, however, is cost-intensive and space-intensive.
  • the object is achieved by a valve for controlling an oil flow for piston cooling nozzles in the lubricating oil circuit of an internal combustion engine, wherein the valve produces an oil flow to the piston cooling nozzles at low oil temperatures Interrupting oil flow to the piston cooling nozzles at medium oil temperatures and in turn produces an oil flow to the piston cooling nozzles at high oil temperatures.
  • a valve is preferred which adjusts the oil flow to the piston cooling nozzles depending on the temperature. This has the advantage that the oil flow is regulated independently of pressure, so that, especially in hot running at low speeds by low pressures, a still sufficient flow of oil can be provided by the pump. In addition, at low temperatures, no additional pressure loss is built up by interposing a pressure limiting valve, so that power is saved at the pump at this operating point.
  • a valve is preferred, which is adjustable by a temperature-dependent adjustable actuator (against a return spring).
  • a temperature-dependent adjustable actuator for example, has the advantage that no electromagnet and the necessary control circuit are necessary.
  • Another valve according to the invention is characterized in that an adjustable opening cross section for low oil temperatures is greater than the opening cross section for high oil temperatures. This has the advantage that viscosity-compliant oil flow metering is possible both for the cold operating condition and for the hot running operating condition, since with hot running the oil viscosity can be lower by a factor of 1000 than at low temperatures. In addition, a smaller flow area allows less space for the valve.
  • valve which has one inlet opening and two outlet openings, or two inlet openings and one outlet opening.
  • This has the advantage that, depending on the operating state (cold start or hot run) each have a different drain opening can be connected to the inlet or vice versa.
  • Another valve according to the invention is characterized in that the valve is designed as a slide valve (directional control valve).
  • a valve is preferred in which above the oil temperature of the slide path is adjusted continuously. The continuous adjustment has the advantage that the oil flows can be controlled slowly larger or smaller and no pressure peaks caused by the opening and closing of the opening cross-sections.
  • valve which is integrated in a cartridge sleeve. This has the advantage that the valve can be used as a preassembled, set and tested unit in the engine block.
  • valve is preferred in which the valve components are fixed in the cartridge by a retaining ring. This has the advantage of ease of manufacture and assembly (no thread necessary) and a quick assembly and disassembly of the components as needed. Furthermore, a valve is preferred in which the temperature-dependent adjustable actuator is designed as DehnMechelement or as a bimetallic element. Also preferred is a valve in which the valve is represented by a combination of poppet valves rather than a slide valve.
  • Figure 1 shows a first variant of a control valve according to the invention for
  • FIG. 2 shows another variant of a control valve for piston cooling nozzles in three control positions.
  • FIG. 1 shows a first variant 1 of a control valve for piston cooling nozzles.
  • the three representations of Figure 1a, Figure 1 b and Figure 1c shows the three possible switching positions of this control valve.
  • a valve housing 3 is a continuously displaceable piston 5 between a temperature-dependent adjustable actuator 7, for example, an expansion element, and a coil spring 9 clamped.
  • FIG. 1 a shows the position of the expansion element 7 at a low oil temperature, that is to say in a cold start.
  • the valve housing 1 further has an inlet opening 11 from the lubricating oil circuit of the engine and two drain openings 13 and 15, wherein the two drain openings 13 and 15 lead to the piston cooling nozzles.
  • the oil inlet 11 is connected via an annular groove 17 of the valve piston 5 to the drain 13 so that oil is supplied to the piston cooling nozzles in the cold state via this control valve and thereby after the start of the engine heating of the lubricating oil on the warming piston and the oil sprayed on it takes place.
  • the valve piston 17, the compression spring 9 and the temperature-dependent adjustable actuator 7 are housed in an opening 19 of the valve housing 3 and closed by an end plug 21, with which, if appropriate, the position of the valve piston can be adjusted.
  • the temperature-dependent adjustable expansion element When exceeding the 40 degrees Celsius oil temperature threshold, with a tolerance of + 5 degrees Celsius is sufficient for driving the valve piston in a different position, the temperature-dependent adjustable expansion element, as shown in Figure 1 b, by expansion of the expansion material, such as a wax filling , Extend a corresponding punch 23 within the element and thus move the piston 5 against the spring 9, so that the valve piston 5 now both the outflow 13 to the piston cooling nozzles closes and still closed the drain 15 to the piston cooling nozzles.
  • the expansion material such as a wax filling
  • the directional control valve 1 is used so that at low oil temperatures, a connection is generated from the lubricating oil supply area to the piston cooling nozzles.
  • This connection is generated with the largest possible cross-sections (opening cross-section for the line 13) in order to allow a large volume flow, which can flow off in the cold state via the piston cooling nozzles.
  • the actuator 7 closes this connection and then opens it again only at high temperatures (hot run). This also has the advantage that a possible pre-throttling can prevent the outflow of an impermissibly high volume flow.
  • connection is only opened again at very high temperatures, as shown in FIG. 1 c.
  • the openings 11 and 15 are connected to each other by the further extension of the actuator 7.
  • the hot run is cooled very well.
  • no pressure relief valves with, for example, a necessary opening pressure of 2 bar must be used.
  • oil is injected through the piston cooling nozzles.
  • oil will flow through the piston cooling nozzles only at engine speeds of 4000 rpm in the hot run because of the high leakage.
  • a control valve variant of Figure 2 can be used in which the control valve 28 is integrated into a cartridge sleeve 30 and now only as a pre-assembled, set and tested unit in the engine block 32 must be used.
  • Various solutions are available for fixing the valve components in the cartridge 30. Shown is a fuse by means of a retaining ring 34, which allows quick assembly and, if necessary, disassembly of the valve parts.
  • a solution is shown here in Figure 2, in which only two holes 36 and 38 are needed, which extend at an angle of 90 degrees in the engine block 32. The feed of the lubricating oil through the bore 36, the bore 38 is connected to the piston cooling nozzles. Through two bores 40 and 42 in the piston 44 and through two control openings 46 and 48 in the carton. ridge 30, the control function can now be realized again.
  • Figures 2a, 2b and 2c show again the three different positions.
  • FIG. 2a the cold start position is shown.
  • the temperature-dependent adjustable actuator 50 is retracted.
  • the control piston 44 is pressed against the actuator 50 by the compression spring 52, which is supported on the securing ring 34.
  • the supply line 36 is connected via the control port 46 of the cartridge 30, the radial bore 40 and the axial bore 42 of the piston 44 to the drain 38 to the piston cooling nozzles, so that now in the cold start lubricating oil is injected under the piston for heating.
  • the actuator 50 extended by a certain range, here to recognize the extended punch 54, which is supported in this valve variant 28 against the screw plug 56.
  • the radial transverse bore 40 of the piston is connected in this position neither with the radial inflow bore 46 of the sleeve 30 nor with the radial inflow bore 48 of the sleeve 30, so that via the drain 38 no lubricating oil can flow to the piston cooling nozzles.
  • the hot-running position is reached.
  • the actuator 50 has the punch 54 completely extended.
  • the radial transverse bore 40 of the piston 44 is now connected to the radial hot-flow inlet opening 48 of the sleeve 30, so that the lubricating oil inlet 36 is connected to the drain 38 to the piston cooling nozzles.
  • the opening cross-section 48 that is to say the inlet for the hot-running state of the internal combustion engine, can be decidedly smaller in cross section than the cold running inlet cross section 46, which, however, is not shown to scale in this picture.
  • the invention thus uses the principle with a single control valve, which is also controlled by a temperature-dependent actuator and does not have a pressure limiting function, an oil volume flow above the rising Tempe- first pass, then switch off and then let it through again.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Compressor (AREA)
  • Nozzles (AREA)

Abstract

L'invention concerne une soupape pour réguler un flux d'huile destiné à des buses de refroidissement pour piston dans le circuit de lubrifiant d'un moteur à combustion. L'invention est caractérisée en ce que la soupape (1, 28) produit un écoulement d'huile à basse température vers les buses de refroidissement pour piston, interrompt l'écoulement d'huile vers les buses à température moyenne, et produit de nouveau un écoulement d'huile vers les buses de refroidissement pour piston à haute température.
PCT/DE2006/001255 2005-09-16 2006-07-20 Soupapes pour buses de refroidissement pour piston WO2007031047A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP06775712A EP1929130B1 (fr) 2005-09-16 2006-07-20 Soupapes pour buses de refroidissement pour piston
DE112006002368T DE112006002368A5 (de) 2005-09-16 2006-07-20 Ventil für Kolbenkühldüsen
DE502006008042T DE502006008042D1 (de) 2005-09-16 2006-07-20 Ventil für kolbenkühldüsen
AT06775712T ATE483895T1 (de) 2005-09-16 2006-07-20 Ventil für kolbenkühldüsen

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005044302 2005-09-16
DE102005044302.8 2005-09-16

Publications (1)

Publication Number Publication Date
WO2007031047A1 true WO2007031047A1 (fr) 2007-03-22

Family

ID=37275782

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2006/001255 WO2007031047A1 (fr) 2005-09-16 2006-07-20 Soupapes pour buses de refroidissement pour piston

Country Status (4)

Country Link
EP (1) EP1929130B1 (fr)
AT (1) ATE483895T1 (fr)
DE (2) DE502006008042D1 (fr)
WO (1) WO2007031047A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017223465A1 (de) * 2017-12-20 2019-06-27 Volkswagen Aktiengesellschaft Kolbenkühldüse

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE542029C2 (en) 2016-03-29 2020-02-11 Scania Cv Ab A system and a method for controlling cooling of a combustion engine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3990424A (en) * 1975-09-15 1976-11-09 Miersch Roy T Oil cooler
FR2328111A1 (fr) * 1975-10-16 1977-05-13 Audi Ag Dispositif de reglage du refroidissement a l'huile du piston d'un moteur a combustion interne a piston
JPS61244820A (ja) * 1985-04-23 1986-10-31 Yanmar Diesel Engine Co Ltd ピストン冷却装置
US5819692A (en) * 1997-05-01 1998-10-13 Schafer; Timothy Vernon Piston cooling oil control valve
DE10261180A1 (de) * 2002-12-20 2004-07-01 Daimlerchrysler Ag Temperaturgeregelte Ölspritzdüse zur Kolbenkühlung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3990424A (en) * 1975-09-15 1976-11-09 Miersch Roy T Oil cooler
FR2328111A1 (fr) * 1975-10-16 1977-05-13 Audi Ag Dispositif de reglage du refroidissement a l'huile du piston d'un moteur a combustion interne a piston
JPS61244820A (ja) * 1985-04-23 1986-10-31 Yanmar Diesel Engine Co Ltd ピストン冷却装置
US5819692A (en) * 1997-05-01 1998-10-13 Schafer; Timothy Vernon Piston cooling oil control valve
DE10261180A1 (de) * 2002-12-20 2004-07-01 Daimlerchrysler Ag Temperaturgeregelte Ölspritzdüse zur Kolbenkühlung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017223465A1 (de) * 2017-12-20 2019-06-27 Volkswagen Aktiengesellschaft Kolbenkühldüse

Also Published As

Publication number Publication date
DE112006002368A5 (de) 2008-06-05
DE502006008042D1 (de) 2010-11-18
EP1929130B1 (fr) 2010-10-06
EP1929130A1 (fr) 2008-06-11
ATE483895T1 (de) 2010-10-15

Similar Documents

Publication Publication Date Title
DE112007001131B4 (de) Kontinuierlich verstellbare Drehschieberpumpe und entsprechendes System
DE10220305B4 (de) Anordnung zum variablen Pumpen von Drucköl und Schmiereinrichtung
EP2558339B1 (fr) Soupape de régulation pour compresseur à vis à injection d'huile
EP2021595B1 (fr) Soupape thermostatique
DE102015000805B3 (de) Regelbare Kühlmittelpumpe
EP2848787B1 (fr) Soupape de commande pour une buse de lubrifiant
WO2018086886A1 (fr) Pompe à liquide de refroidissement électrique
EP3387225B1 (fr) Système d'alimentation en fluide
EP3338014A1 (fr) Soupape commandée en pression et en température dans un circuit d'huile d'un moteur à combustion interne
DE102009048172A1 (de) Kolben für eine ein veränderbares Kompressionsverhältnis aufweisende Verbrennungskraftmaschine
DE102015211846A1 (de) Ablassvorrichtung für Öl-Kreislauf von Motor
DE10301448A1 (de) Vorrichtung zur Temperierung von Schmieröl eines Kraftfahrzeugs
EP2080943B1 (fr) Soupape de régulation
DE102015211929A1 (de) Ablassvorrichtung für Öl-Kreislauf von Motor
EP3452705B1 (fr) Système d'alimentation en fluide
DE19938285A1 (de) Einrichtung zur Regelung des Schmieröldruckes einer Brennkraftmaschine
EP1929130B1 (fr) Soupapes pour buses de refroidissement pour piston
EP3470714B1 (fr) Soupape de réglage d'un flux de fluide de refroidissement destiné au refroidissement des pistons
DE10241461A1 (de) Volumenstromregelventil
EP3412944B1 (fr) Soupape de commande
DE102016207655A1 (de) Fluidversorgungssystem
DE102005011754A1 (de) Thermostatventil für einen Kühlmittelkreislauf einer Brennkraftmaschine
DE102009024698A1 (de) Schmierstoffpumpensystem
DE112015005215T5 (de) Entlastungsventil
DE102011055406A1 (de) Ventileinrichtung für eine Ölversorgungseinrichtung einer Kraftfahrzeug-Brennkraftmaschine

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 2006775712

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 1120060023683

Country of ref document: DE

REF Corresponds to

Ref document number: 112006002368

Country of ref document: DE

Date of ref document: 20080605

Kind code of ref document: P

WWP Wipo information: published in national office

Ref document number: 2006775712

Country of ref document: EP