EP2102455A1 - Schaltbares abstützelement für einen ventiltrieb einer brennkraftmaschine - Google Patents
Schaltbares abstützelement für einen ventiltrieb einer brennkraftmaschineInfo
- Publication number
- EP2102455A1 EP2102455A1 EP07847766A EP07847766A EP2102455A1 EP 2102455 A1 EP2102455 A1 EP 2102455A1 EP 07847766 A EP07847766 A EP 07847766A EP 07847766 A EP07847766 A EP 07847766A EP 2102455 A1 EP2102455 A1 EP 2102455A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- coupling means
- coupling
- slide
- inner element
- 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.)
- Granted
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 9
- 230000008878 coupling Effects 0.000 claims abstract description 52
- 238000010168 coupling process Methods 0.000 claims abstract description 52
- 238000005859 coupling reaction Methods 0.000 claims abstract description 52
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 239000007822 coupling agent Substances 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 230000001419 dependent effect Effects 0.000 claims 1
- 238000010409 ironing Methods 0.000 claims 1
- 210000003128 head Anatomy 0.000 description 6
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 210000001061 forehead Anatomy 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/20—Adjusting or compensating clearance
- F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
- F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
- F01L1/2405—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically by means of a hydraulic adjusting device located between the cylinder head and rocker arm
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0005—Deactivating valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2307/00—Preventing the rotation of tappets
Definitions
- the invention relates to a switchable supporting element for a valve train of an internal combustion engine, with a housing which can be arranged via its outer casing in a receptacle of the internal combustion engine and in the bore an axially movable, with its head an edge of the housing superior inner element extends, wherein the support element coupling means are selectively associated with the housing for selectively coupling the inner member in its axially extended position, which inner member is acted upon from the housing by at least one lost-motion spring.
- Such a support element in this case of a hydraulic design, is evident from EP 1 411 214 A2, which is considered to constitute the structure.
- a particular disadvantage is the relatively large height, caused inter alia by the superposed arrangement of Lost-motion spring, coupling mechanism and hydraulic unit.
- the piston arranged in the inner element can be removed as a coupling means in the case of a desired disassembly (for example, for adjusting the coupling play) only with difficulty.
- solutions are previously known in which a corresponding slide is arranged as a coupling means laterally in the cylinder head and in the coupling case in a corresponding engagement surface of the support element is displaced. The person skilled in the art recognizes that costly changes to the cylinder head design are required here and that such a device requires an unnecessary amount of space laterally.
- the object of the invention is therefore to provide a support element of the aforementioned type, in which the cited disadvantages are eliminated.
- this object is achieved in that at least one slide is provided as a coupling means, which is positioned in the decoupling case in a radially or secant extending guide of the housing and, starting from its radially inner end, a flattened top is immanent over which he im Coupling case with a flattened bottom of a recess in the outer shell of the inner member is engageable.
- the support element is provided with a hydraulic lash adjuster known per se, wherein also mechanical lash adjuster variants are conceivable and provided.
- mechanical lash adjuster variants are conceivable and provided.
- the idea of the invention can be realized with only one slider as a coupling agent, but it is particularly advantageous if two diametrically opposed slide are provided as coupling means. It is particularly thought of piston-like elements which, starting from their radially inner end face, are flattened at their top and engage according to a particularly useful development of the invention in a recess on the outer surface of the inner element, which recess is shown as a transverse slot with secant-even slit bottom ,
- a coupling means a ring segment or a sickle-like design in question, which is also intended to a circumferential or partially circumferential groove on the outer surface of the inner element for the coupling case.
- an anti-twist device for the slide or slides can be represented as a coupling means via this clip-like spring, for example by providing the end pieces with a radii-like curvature or the like, which convexity then in a correspondingly complementary longitudinal slot on the outer face of the Coupling agent is inserted.
- an anti-rotation device such as a pin or a ball, is provided between the inner element and the housing. Possibly. In this area, the inner element can also be secured against rotation by being flattened against the housing.
- the coupling play can also be adjusted by means of sliders grouped in relation to a height of their flattened top.
- a return displacement of the slide in Entkoppelraum completely in the leadership of the housing is expedient hen hen over hydraulic means hen provided. This can be passed through an annular groove on the outer surface of the housing and at least one transverse bore frontally inside the corresponding slide.
- At least one helical compression spring or the like is proposed as a lost-motion spring, which at one end acts against a lower side of the inner element and at the other end against a bottom of the housing.
- the bottom of the inner element may also be stepped, so that the lost-motion spring at least partially surrounds a high-pressure chamber in the inner element.
- Figure 1 shows a longitudinal section through an inventive support member in the region of the slide
- Figure 2 shows a longitudinal section of Figure 1, rotated by 90 ° with
- Figure 3 shows an enlarged cross-section through the support member in the region of the slide.
- a switchable support element 1 for a valve train of an internal combustion engine This consists of a pot-like housing 2, in the bore 4 axially movable an inner element 6 is added, which projects beyond an edge 7 of the housing 2 with its head 5.
- the head 5 is part of a built-in a bore 29 of the inner member 6 pressure piston 31 a hydraulic lash adjuster.
- the latter pressure piston 31 has at its head-far region a transverse web 32 with a check valve 33 which opens in the direction of an underlying high-pressure chamber 35 which is bounded by a base 34 of the inner member 6 in the direction of the head.
- a lost-motion spring 9 which is designed as a spring assembly.
- two diametrically opposed slides are applied as coupling means 8. These sit in respective guides 10 of the housing 2 and have, starting from their respective radially inner end 11, stepped tops 12.
- the coupling means 8 are shown in their coupling status (FIG. 1), wherein the flat tops 12 communicate with flat undersides 13 of corresponding recesses 14 in the outer jacket 15 of the inner element 6.
- the recesses 14 are, as best seen in Figure 3 can be seen as a transverse slots with secant-even slit bottom 16 shown.
- This acts with its end pieces 18 on outer end faces 19 of the slide as a coupling means 8 a.
- a guide and captive for the spring 16a is provided via a circumferential groove 17 on the outer casing 3 of the housing 2, wherein the end pieces 18 of the spring 16a, which are shown here vaulted curved, at the same time form-fitting manner in longitudinal slots 20 of the outer end faces 19 of the slide as coupling means run.
- FIGS. 2, 3 disclose that the inner element 6 is held in relation to the housing 2 by means of a pin-like anti-rotation device 21.
- This rotation 21 is stationary in a recess 22 in the housing 2.
- the inner element 6 experiences a travel limit in its two directions of travel, optionally also in the axially extended state, a coupling play of the head pelstoff 8 can be displayed. Due to the latter rotation, a secure position assignment of the slider is created as a coupling means 8 with respect to their recesses 14.
- a return displacement of the slide as coupling means 8 in Entkoppelraum is provided via hydraulic means.
- an annular groove 38 from which two opposite transverse bores 39 are guided through the housing 2, of which the hydraulic fluid can be conducted in an annular space in front of the radially inner forehead 11 of the slide as coupling means 8.
- the radially inner forehead 11 of the slide are designed to be spherical as a coupling means 8, so that a "good" Herantechnisch the hydraulic fluid is ensured.
- the illustrated housing 2 may be solid or formed as a deep-drawn or extruded lightweight component.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007002787A DE102007002787A1 (de) | 2007-01-18 | 2007-01-18 | Schaltbares Abstützelement für einen Ventiltrieb einer Brennkraftmaschine |
| PCT/EP2007/063263 WO2008086913A1 (de) | 2007-01-18 | 2007-12-04 | Schaltbares abstützelement für einen ventiltrieb einer brennkraftmaschine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2102455A1 true EP2102455A1 (de) | 2009-09-23 |
| EP2102455B1 EP2102455B1 (de) | 2017-02-22 |
Family
ID=39190761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP07847766.8A Not-in-force EP2102455B1 (de) | 2007-01-18 | 2007-12-04 | Schaltbares abstützelement für einen ventiltrieb einer brennkraftmaschine |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US8136495B2 (de) |
| EP (1) | EP2102455B1 (de) |
| DE (1) | DE102007002787A1 (de) |
| WO (1) | WO2008086913A1 (de) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007041844A1 (de) * | 2007-09-04 | 2009-03-05 | Schaeffler Kg | Schaltbares Abstützelement für einen Ventiltrieb einer Brennkraftmaschine |
| DE102010052175A1 (de) | 2010-11-22 | 2012-05-24 | Schaeffler Technologies Gmbh & Co. Kg | Schaltbares Abstützelement |
| DE102011007157A1 (de) | 2011-04-11 | 2012-10-11 | Schaeffler Technologies Gmbh & Co. Kg | Schaltbares Abstützelement |
| DE102011079623A1 (de) | 2011-07-22 | 2013-01-24 | Schaeffler Technologies AG & Co. KG | entiltrieb einer Brennkraftmaschine |
| DE102011080268A1 (de) | 2011-08-02 | 2013-02-07 | Schaeffler Technologies AG & Co. KG | Schaltbares Ventiltriebsglied |
| DE102011081418A1 (de) | 2011-08-23 | 2013-02-28 | Schaeffler Technologies AG & Co. KG | Schaltbares Ventiltriebsglied einer Brennkraftmaschine |
| DE102012200094A1 (de) | 2012-01-05 | 2013-07-11 | Schaeffler Technologies AG & Co. KG | Verfahren zur Einstellung eines Koppelspiels bei einem schaltbaren Bauteil eines Ventiltriebs einer Brennkraftmaschine |
| DE102012200268A1 (de) | 2012-01-11 | 2013-07-11 | Schaeffler Technologies AG & Co. KG | Schaltbares Ventiltriebsglied |
| DE102012200759A1 (de) | 2012-01-19 | 2013-07-25 | Schaeffler Technologies AG & Co. KG | Ventiltriebssystem |
| DE102013200168A1 (de) | 2013-01-09 | 2014-07-24 | Schaeffler Technologies Gmbh & Co. Kg | Schaltbarer Ventiltrieb einer Brennkraftmaschine |
| DE102013226078A1 (de) | 2013-12-16 | 2015-06-18 | Schaeffler Technologies AG & Co. KG | Schaltbares Abstützelement |
| US10196944B2 (en) | 2014-10-10 | 2019-02-05 | Schaeffler Technologies AG & Co. KG | Mechanical lash control for a switchable roller finger follower |
Family Cites Families (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61118515A (ja) * | 1984-11-14 | 1986-06-05 | Mazda Motor Corp | エンジンのバルブ駆動装置 |
| JPS61118514A (ja) * | 1984-11-14 | 1986-06-05 | Mazda Motor Corp | エンジンのバルブ駆動装置 |
| DE4000531A1 (de) * | 1990-01-10 | 1990-06-13 | Roland Schmidt | Verstellvorrichtung zur veraenderung von ventilsteuerzeiten und ventilhub |
| JPH0494405A (ja) | 1990-08-08 | 1992-03-26 | Ntn Corp | 可変バルブタイミング装置 |
| DE4206166B4 (de) * | 1991-03-14 | 2004-11-04 | Volkswagen Ag | Variabler Ventiltrieb für ein Hubventil einer Maschine |
| DE4210567B4 (de) * | 1991-04-15 | 2004-03-25 | Volkswagen Ag | Variabler Ventiltrieb für ein Hubventil einer Maschine |
| DE4244288C2 (de) * | 1992-11-13 | 2001-05-31 | Iav Motor Gmbh | Schaltbarer Stößel für Ladungswechselventile, vorzugsweise für Einlassventile von Hubkolbenmotoren |
| US5361733A (en) * | 1993-01-28 | 1994-11-08 | General Motors Corporation | Compact valve lifters |
| DE4314619A1 (de) * | 1993-05-04 | 1994-11-10 | Schaeffler Waelzlager Kg | Stößel |
| DE9319435U1 (de) * | 1993-12-17 | 1994-02-10 | INA Wälzlager Schaeffler KG, 91074 Herzogenaurach | Schaltbares Abstützelement |
| DE4404145A1 (de) * | 1994-02-09 | 1995-08-10 | Schaeffler Waelzlager Kg | Schalteinrichtung in einem Ventiltrieb |
| DE4440469A1 (de) * | 1994-11-12 | 1996-05-30 | Peter Prof Dr Tenberge | Schaltbarer Stößel |
| DE19819068A1 (de) * | 1998-04-29 | 1999-11-04 | Schaeffler Waelzlager Ohg | Abstützelement für einen Schlepphebel eines Ventiltriebs einer Brennkraftmaschine |
| US7263956B2 (en) * | 1999-07-01 | 2007-09-04 | Delphi Technologies, Inc. | Valve lifter assembly for selectively deactivating a cylinder |
| EP1143120A3 (de) | 2000-03-08 | 2001-10-24 | Eaton Corporation | Ventildeaktivierungsmechanismus einer Brennkraftmaschine |
| DE10119366A1 (de) * | 2001-04-20 | 2002-10-24 | Ina Schaeffler Kg | Hydrauliksystem einer Brennkraftmaschine |
| DE10122373B4 (de) * | 2001-05-09 | 2014-09-18 | Schaeffler Technologies Gmbh & Co. Kg | Schaltbares Abstützelement |
| DE10210747A1 (de) * | 2002-03-12 | 2003-10-02 | Ina Schaeffler Kg | Verfahren zur Herstellung von schaltbaren Ventiltriebsgliedern einer Brennkraftmaschine |
| DE10247949A1 (de) | 2002-10-15 | 2004-04-29 | Ina-Schaeffler Kg | Schaltbares Abstützelement für einen Ventiltrieb einer Brennkraftmaschine |
| US6837197B2 (en) * | 2003-03-19 | 2005-01-04 | Eaton Corporation | Dual valve lift and valve deactivation |
| EP1544422B1 (de) * | 2003-11-05 | 2006-08-02 | Eaton S.R.L. | Ventildeaktivierungssystem und verriegelbares hydraulisches Spielausgleichselement dafür |
| DE102005003745A1 (de) * | 2005-01-27 | 2006-08-10 | Schaeffler Kg | Abschaltbares Abstützelement für einen Ventiltrieb einer Brennkraftmaschine |
| US7111597B2 (en) * | 2005-02-18 | 2006-09-26 | Gm Global Technology Operations, Inc. | Valve deactivator latching assembly |
-
2007
- 2007-01-18 DE DE102007002787A patent/DE102007002787A1/de not_active Withdrawn
- 2007-12-04 EP EP07847766.8A patent/EP2102455B1/de not_active Not-in-force
- 2007-12-04 US US12/448,970 patent/US8136495B2/en not_active Expired - Fee Related
- 2007-12-04 WO PCT/EP2007/063263 patent/WO2008086913A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2008086913A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20100059001A1 (en) | 2010-03-11 |
| US8136495B2 (en) | 2012-03-20 |
| DE102007002787A1 (de) | 2008-07-24 |
| WO2008086913A1 (de) | 2008-07-24 |
| EP2102455B1 (de) | 2017-02-22 |
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