EP1931860A1 - Flow-control valve for throttling hydraulic pressure medium - Google Patents
Flow-control valve for throttling hydraulic pressure mediumInfo
- Publication number
- EP1931860A1 EP1931860A1 EP06793075A EP06793075A EP1931860A1 EP 1931860 A1 EP1931860 A1 EP 1931860A1 EP 06793075 A EP06793075 A EP 06793075A EP 06793075 A EP06793075 A EP 06793075A EP 1931860 A1 EP1931860 A1 EP 1931860A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- pressure medium
- housing
- flow
- control 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/04—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfaces; Packings therefor
- F16K5/0414—Plug channel at 90 degrees to the inlet
-
- 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
- F01M1/06—Lubricating systems characterised by the provision therein of crankshafts or connecting rods with lubricant passageways, e.g. bores
-
- 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
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/04—Means in valves for absorbing fluid energy for decreasing pressure or noise level, the throttle being incorporated in the closure member
- F16K47/06—Means in valves for absorbing fluid energy for decreasing pressure or noise level, the throttle being incorporated in the closure member with a throttle in the form of a helical channel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N27/00—Proportioning devices
- F16N27/005—Proportioning devices using restrictions
Definitions
- the invention relates to a flow control valve with a throttle cross-section to Dros- hydraulic pressure medium, in particular in the lubricant circuit of internal combustion engines.
- the flow control valve is mounted with a substantially cylindrical outer circumferential surface of a valve housing in a pressure medium channel of a machine housing, which has a pressure-tight sealing plug at an opening of the pressure medium channel in the environment of the Maschinengeophu- ses, and has on a side facing away from the mouth a first connected to the pressure medium channel Pressure medium connection on.
- Such flow control valves are known as a throttle device in hydraulic systems and controls and serve to supply pressurized hydraulic fluid with reduced volume flow to a hydraulic consumer.
- a flow control valve can be used for example as a spray nozzle for piston cooling in the lubricant circuit of the internal combustion engine.
- Another field of application relates to the integration of the flow control valve in a lubricant circuit, which serves not only for lubrication and cooling but also for controlling hydraulically operated actuators or coupling elements of a variably designed valve control of the internal combustion engine.
- Such an application is apparent, for example, from DE 37 38 488 A1.
- Such a flow control valve which is shown only schematically in the cited document on the basis of a hydraulic circuit diagram, is arranged as an executed component, for example in a hydraulic medium channel produced as a deep hole bore in a cylinder head of the internal combustion engine.
- plugs are inserted into the mouth of the pressure medium channel.
- sealing plugs are known, for example, from DE 24 39 842 A1 in the form of a screw-in part with a sealing ring and from DE 44 15 341 A1 and DE 198 46 379 A1 in the form of sealing plugs pressed into the mouth with specially designed outer contours.
- an individually tailored to the plugs muzzle contour of the pressure medium channel to be produced for the purpose of sealing and to be assembled closure plugs can lead to a significant cost factor in the production of the machine housing in general or the internal combustion engine in particular.
- the object of the invention is therefore to avoid this disadvantage and thus form a flow valve of the type mentioned above and to arrange in the pressure fluid channel that the cost of producing and mounting a pressure and fatigue seal the pressure fluid channel is minimized compared to the environment of the machine housing as far as possible , Summary of the invention
- the stopper is to be formed by the flow valve itself by a radially extending through the outer lateral surface second pressure medium connection, which is connected to a transversely opening into the pressure medium channel further pressure medium channel is provided, and one of the mouth facing and the second pressure medium connection adjacent end portion of Valve housing has a closed housing bottom and the end portion is inserted by means of a hydraulically sealing L josspress said in the pressure medium channel.
- the housing bottom for radially directed mounting of the flow control valve in the pressure medium channel has an extending in the longitudinal direction of the flow control engagement contour for an assembly tool, the engagement contour transverse to the longitudinal direction asymmetrically with clear assignment of the radial position of the second Druckmit- telan gleiches is formed.
- Such an engagement contour allows a reliable, fully automated radial alignment of the flow control valve on the assembly tool for rotationally pressing the flow control valve into the pressure medium passage, so that the second pressure fluid connection is always in hydraulic communication with the further pressure medium passage.
- the engagement contour can be formed both as an inner contour and as an outer contour, although it may be expedient to limit the longitudinal extent of the flow valve in the direction of the mouth of the pressure medium channel, the engagement contour as an inner contour of a curved in the direction of the first pressure medium connection Form section of the housing bottom.
- the flow control valve should be designed in two parts and consist of the valve housing and a valve housing axially play-free mounted valve insert which limits the throttle cross-section exist.
- the valve housing can be designed to further reduce costs as manufactured in a thermoforming process, thin-walled sheet metal part, wherein the valve insert is axially supported on the one hand on the housing bottom and on the other hand on a radially inwardly facing collar of the valve housing.
- a lightweight material such as plastic is preferably provided as the material for the valve insert.
- the second pressure medium connection can be designed as an opening framed by an annular collar of the valve housing extending into the flow control valve.
- the valve insert has a recess extending in the longitudinal direction of the flow control valve and encompassing the annular collar such that the valve core is freely insertable via the annular collar into the valve housing and secured against rotation in the valve housing.
- Such an embodiment of the flow control valve is particularly suitable for throttle cross-sections which are not rotationally symmetrical about its longitudinal axis and which are radially aligned with respect to the pressure medium connections.
- valve insert has a housing base and limited by a bottom hollow cylindrical recess recess, which is on the one hand via the recess with the second pressure medium connection and on the other hand with the throttle cross-section in hydraulic communication.
- this recess is at the same time also available as installation space for the curved section. cut the housing bottom with the aforementioned tool engagement contour available.
- the throttle cross-section may be formed on the one hand by at least one longitudinal bore which extends through the bottom of the valve core.
- the throttle channel opens into a first channel, which is formed as a first pressure medium connection of the flow control valve and is connected via a second channel in hydraulic communication with the recess.
- Such a throttle channel is particularly suitable for generating a high pressure drop and / or smallest volume flows via the flow control valve, since the throttling effect is not generated by very small, closely tolerated and contamination-sensitive holes but via the flow resistance of a long channel with advantageously large cross-section.
- the meandering course of the throttle channel is particularly suitable for injection molding production of the valve insert made of plastic, since on the one hand, the throttle channel must be formed only in a mold half of the injection molding tool. As a result, the demolding of the valve insert from the injection mold obstructing undercuts are avoided, as they arise in a spiral around the outer circumferential surface of the valve insert channel.
- the floor may also have an extending in the longitudinal direction of the flow control engagement contour for an assembly tool which is formed transversely to the longitudinal direction asymmetrically with clear assignment of the radial position of the recess.
- This engagement contour should finally be formed as an outer contour of an extension of the base extending beyond the collar of the valve housing. Alternatively, however, it is also possible here to form this engagement contour as an inner contour.
- FIG. 1 shows a first embodiment of a in the pressure medium channel of a
- Machine housing mounted flow control valve in the sectional view
- Figure 2 shows an engagement contour for a mounting tool for directional
- Figure 3 shows an engagement contour for a mounting tool in a housing bottom of the flow control valve for directional mounting of the flow control valve in the pressure medium channel in perspective view;
- Figure 4 shows a second embodiment of the flow control valve in longitudinal section
- Figure 5 is a perspective view of the valve core of the flow control valve according to Figure 4 with a meandering throttle channel.
- FIG. 1 discloses a first embodiment variant of a flow control valve 1 a according to the invention. Shown is a machine housing 2 with a pressure medium channel 3 produced as a deep hole bore into which a further pressure medium channel 4 opens transversely.
- the flow control valve 1 a is by means of a longitudinal compression band between a cylindrical outer circumferential surface 5 of a valve housing 6 and an enlarged diameter mouth 7 of the pressure medium channel 3 used in this so that on a side facing away from the mouth 7, a first pressure medium connection 8 with the pressure medium channel 3 and a radially extending through the outer circumferential surface 5 second pressure medium connection 9 is connected to the further pressure medium channel 4.
- the flow control valve 1 a is formed in two parts and consists of the formed in a thermoforming process and designed as a thin-walled sheet metal part valve housing 6 and a valve insert 13a made of plastic.
- the valve insert 13a has a recess 14 running in the longitudinal direction of the flow control valve 1a, which surrounds a ring collar 15 of the valve housing 6 extending into the flow control valve 1a so that the valve core 13a can freely be inserted into the valve housing 6 via the annular collar 15 and secured against rotation in the valve housing 6.
- valve insert 13a The insertion of the valve insert 13a into the valve housing 6 takes place before the production of a collar 16 on the valve housing 6 by means of a beading, so that the valve core 13a after flaring on the one hand on the housing bottom 1 1 and on the other hand supported on the collar 16 axialspieluza.
- the valve insert 13a further has a hollow-cylindrical recess 18 facing the housing bottom 11 and delimited by a bottom 17, which on the one hand projects via the recess 14 with the second pressure medium connection 9 formed as an annular collar 15 and on the other hand with a throttle cross-section 20 in FIG hydraulic connection stands.
- the throttle cross-section 20 is formed in this first embodiment of the flow control valve 1 a by a cross-section longitudinal bore 21 which extends through the bottom 17 of the valve core 13 a and opens in the first pressure medium connection 8.
- valve insert 13a for the purpose of radially directed mounting in the valve housing 6 in the longitudinal direction of the flow control valve 1 a extending and transverse to the longitudinal direction asymmetrically formed engagement contour 22 for a mounting tool on.
- the engagement contour 22 is formed as an outer contour 23 on an over the collar 16 of the valve housing 6 also extending projection 24 in the form of a participatedvielkants with orthogonal standing wrench surfaces 25 and a sloping surface 26. Since the surface 26 has a fixed radial reference to the recess 14, the radial position of the recess 14 is uniquely associated with the outer contour 23 complementary mounting tool.
- a radial positioning of the valve housing 6 corresponding to the orientation of the valve insert 13a can then take place, for example, by aligning the opening 19 on an assembly mandrel, so that the valve insert 13a can be pushed reliably into the valve housing 6.
- FIGS. 4 and 5 A second embodiment of a flow control valve 1 b according to the invention can be seen in FIGS. 4 and 5.
- the flow control valve 1 b differs from the flow control valve 1 a in that the throttle cross-section 20 of the flow control valve 1 b is not formed by a longitudinal bore running in the bottom 17 but by a throttling duct 32, which is in an outer shell surface section 33 opposite the second pressure fluid connection 9 a valve insert 13 b meanders in the longitudinal direction of the flow control valve 1 b and is limited by the valve housing 6.
- the throttle channel 32 opens into a first channel 34 to the first pressure medium connection 8 and is connected via a second channel 35 in hydraulic communication with the recess 18 which corresponding to the flow control valve 1 a via the recess 14 and the opening 19 with the further pressure medium channel 4 in hydraulic communication stands.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005046065A DE102005046065A1 (en) | 2005-09-27 | 2005-09-27 | Flow control valve for internal-combustion engine, has pressurizing medium sealing closure plug formed through valve, and valve housing with end section inserted into pressurizing medium channel by longitudinal fit assembly |
PCT/EP2006/065798 WO2007036408A1 (en) | 2005-09-27 | 2006-08-30 | Flow-control valve for throttling hydraulic pressure medium |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1931860A1 true EP1931860A1 (en) | 2008-06-18 |
Family
ID=37450899
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06793075A Withdrawn EP1931860A1 (en) | 2005-09-27 | 2006-08-30 | Flow-control valve for throttling hydraulic pressure medium |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1931860A1 (en) |
KR (1) | KR20080052608A (en) |
CN (1) | CN101273187B (en) |
DE (1) | DE102005046065A1 (en) |
WO (1) | WO2007036408A1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008054002A1 (en) * | 2008-10-30 | 2010-05-06 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Compressor i.e. simple reciprocating compressor, for use in motor vehicle for supply of compressed air, has valve mechanism connected with forward oil of driving motor of vehicle, and return line connected between valve mechanism and sump |
DE102010008773A1 (en) * | 2010-02-22 | 2011-08-25 | Schaeffler Technologies GmbH & Co. KG, 91074 | Actuating element of an electromagnetic actuator of a hydraulic valve |
CN102588033A (en) * | 2012-03-23 | 2012-07-18 | 重庆长安汽车股份有限公司 | Oil limiting screw plug for engine lubrication system |
CN103670581A (en) * | 2012-09-18 | 2014-03-26 | 重庆长安汽车股份有限公司 | Oil limiting plug screw for engine lubricating system |
DE202013004009U1 (en) * | 2013-04-27 | 2014-07-29 | GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) | Throttle plug for a cylinder head oil supply system and cylinder head |
DE102018115343A1 (en) | 2018-06-26 | 2020-01-02 | Schaeffler Technologies AG & Co. KG | Control valve with sealing contour on a sleeve-shaped hydraulic guide element; as well as kit with control valve and camshaft adjuster |
DE102018217383A1 (en) * | 2018-10-11 | 2020-04-16 | Thyssenkrupp Ag | High pressure valve for controlled pressure reduction |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2202074A (en) * | 1938-09-29 | 1940-05-28 | Thexton Mfg Company Inc | Oil pressure regulator |
US2664109A (en) * | 1948-09-24 | 1953-12-29 | Babcock & Wilcox Co | Fluid circuit resistor construction |
GB8618336D0 (en) * | 1986-07-28 | 1986-09-03 | Interlube Syst Ltd | Flow restrictor unit |
FR2680387B1 (en) * | 1991-08-13 | 1993-10-01 | Renault Regie Nale Usines | CYLINDER HEAD FOR INTERNAL COMBUSTION ENGINE. |
CN2284650Y (en) * | 1995-01-01 | 1998-06-24 | 象山县久源润滑件厂 | Direction adjustable quantitative injector |
CN2462220Y (en) * | 2000-08-31 | 2001-11-28 | 宁波市三浪润滑元件有限公司 | Grease lubricated multifunctional control valve |
-
2005
- 2005-09-27 DE DE102005046065A patent/DE102005046065A1/en not_active Withdrawn
-
2006
- 2006-08-30 WO PCT/EP2006/065798 patent/WO2007036408A1/en active Application Filing
- 2006-08-30 CN CN200680035873XA patent/CN101273187B/en not_active Expired - Fee Related
- 2006-08-30 KR KR1020087007258A patent/KR20080052608A/en not_active Application Discontinuation
- 2006-08-30 EP EP06793075A patent/EP1931860A1/en not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO2007036408A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2007036408A1 (en) | 2007-04-05 |
CN101273187B (en) | 2010-06-16 |
CN101273187A (en) | 2008-09-24 |
DE102005046065A1 (en) | 2007-03-29 |
KR20080052608A (en) | 2008-06-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 20080428 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR GB IT |
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RBV | Designated contracting states (corrected) |
Designated state(s): DE FR GB IT |
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17Q | First examination report despatched |
Effective date: 20110711 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG |
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GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
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DAX | Request for extension of the european patent (deleted) | ||
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
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18W | Application withdrawn |
Effective date: 20121128 |
|
P01 | Opt-out of the competence of the unified patent court (upc) registered |
Effective date: 20230522 |