EP1268986B1 - Ventildrehvorrichtung - Google Patents
Ventildrehvorrichtung Download PDFInfo
- Publication number
- EP1268986B1 EP1268986B1 EP01927826A EP01927826A EP1268986B1 EP 1268986 B1 EP1268986 B1 EP 1268986B1 EP 01927826 A EP01927826 A EP 01927826A EP 01927826 A EP01927826 A EP 01927826A EP 1268986 B1 EP1268986 B1 EP 1268986B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ball
- cover
- valve
- balls
- spring
- 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
Links
Images
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
- F01L1/32—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for rotating lift valves, e.g. to diminish wear
Definitions
- the invention relates to a valve rotating device according to the Preamble of claim 1.
- valve seat and the valve stem are subject to one heavy wear.
- To ensure an even thermal load and achieving wear and tear is usually one Valve rotating device provided.
- the rotation also provides for cleaning the valve seat from oil carbon.
- a generic valve turning device is from the US-PS 2,624,323.
- a plate spring is spaced apart Balls arranged, which generate the twisting movement.
- Around Frictional forces between the axial spring device and one To reduce the lid is a three-point support with inserted Balls are provided on one side of the disc spring.
- valve rotators such as the one shown in FIG from DE-AS 1 293 789, US Pat. No. 2,827,886, DE-OS 27 57 455 or DE-OS 30 04 320 are known, is the lid, which at the same time the lower valve spring plate is over a disc-shaped plate spring rotatably mounted, which rests directly on the balls of the base body.
- the balls are moved by the tangential springs held at the top point of the inclined ball track.
- the disc spring presses on the balls and these roll to the lowest point of the inclined ball track in the body. They turn the disc spring and press the tangential springs together.
- the rotary movement of the disc spring is controlled by the cover Valve spring, the upper spring plate and the clamping pieces transfer the valve. If the valve closes, the plate spring relieved. The balls are from the tangential springs pushed back into the starting position without rolling.
- the invention has for its object to provide a valve rotating device which is simple. Has structure and a good twisting function and at the same time is particularly low-wear.
- a basic idea of the invention is the principle of rotation as well as the necessary force introduction and To consistently separate the power transmission principle. If the valve rotating device initiating a Compressed valve spring force takes the axial spring device the essential forces. Through the power transmission package Pivot bearing / axial spring / cover is the upper part of the valve rotating device under the Valve spring force non-positively connected. The The outer surface of the lid is now twisted at a vertical one Movement - reducing the distance between the lid and Base body - the base body over the rolling bearing. This Rotation takes place relative to the cover via friction locking between the components cover - balls - base.
- these elements are separated from one another separated - enlargement of the vertical distance -, whereby the balls due to the spring force of the tangential springs return to their starting position. This can be another Rotation of the main body initiated at the next stroke become.
- the rolling bearing reduces friction and Wear. Due to the external arrangement of the balls generate their rolling forces in the circumferential direction due to the a relatively large distance from the axis of rotation Torque, which improves the twist.
- the lid relative to the Base body supported by the roller bearing around the axis of rotation and is led.
- the twisting movement generated thereby becomes the basic body guided only radially by the needle bearing.
- the axial needle bearing has tapered races or side heels on the two races, between which the cylindrical needle-shaped rolling elements arranged with their cage are.
- the ball diameter be cut in half so that the ball diameter is between 3 mm and 10 mm.
- the axial spring device at least one Disc spring, preferably a disc spring package.
- Disc springs are a particularly cost-effective option represents axially pushing the cover and the base body apart. Leave when using a plate spring assembly the desired axial forces are inexpensive and at the same time adjust with high accuracy.
- the pivot bearing which is on an axial side of the axial spring device is arranged, either on the lid or lie on the base body, the latter being the preferred embodiment is.
- the pivot bearing can be a simple sliding surface. According to the invention, however, it is preferred that the pivot bearing is a needle bearing. at this rolling bearing variant becomes one in a small space particularly low-friction twist between the one hand Support non-positively on the base body Disc spring and on the other hand reached the lid.
- Overpressing the valve rotating device is according to the invention thereby preventing the balls from hitting the bottom Point of the ball track completely included in the ball pocket are and that the main body in this position rests on the cover as far as it will go.
- the cover opens, so to speak, in the axial travel path Block so that the power flow from the lid directly into the Basic body is directed.
- An overuse of the Balls or the axial spring device is excluded which is also positive for the service life of the Valve turning device affects.
- the base body is fixed to the cylinder head connected while the cover acts as a lower valve spring retainer serves and rotatably connected to this.
- the cover can also an inverted arrangement of the valve rotating device according to the invention or a so-called overhead arrangement done, in which the cover the upper valve spring plate forms.
- one according to the invention comprises Valve rotating device 10 an annular base body 12, which has a center opening with a conical seat 34 for receiving a valve stem.
- a needle bearing is arranged as a roller bearing 24.
- On a circumferential shoulder axially projecting from the rolling bearing 24 are three ball pockets evenly distributed around the circumference 14 stamped, in each of which a ball 16 is provided is.
- a ball pocket base is like an inclined ball track 18 formed on which the ball 16 by means of a tangential spring 20 at a top dead center in one Is held at rest.
- a single plate spring 32 On the roller bearing 24 is a single plate spring 32 as an axial spring device 30 is arranged.
- the axial spring device 30 is non-positively supported on a disc-shaped Cover 22, which rests on the balls 16.
- the axial position of the cover 22 relative to the base body 12 is defined by a snap ring 26, wherein the cover 22 is rotatable relative to the base body 12 and also towards the base body 12 to a certain extent Circumference is axially displaceable. Only in this In idle state there is static friction via the snap ring 26 between the cover 22 and the base body 12. During the axial displacement and simultaneous twisting there is a tour and thus a defined change of position exclusively via the rolling bearing 24. This prevents additional friction wear.
- valve rotating device 10 To open a cylinder head valve, not shown, is a Valve spring compressed, which has an axial force exercises the lid 22.
- the lid 22 is axially to the Base body 12 moved, the balls 16 against the Spring action of the tangential springs 20 in the ball pockets 14 be pushed in. While the balls 16 are in a rest position a defined protrusion from the base body 12, as can be seen from Fig. 3, will 4, the ball 16 when the spring force is applied fully pressed into the ball pocket 14. there the ball 16 rolls on an incline between 8 to 15 degrees provided ball track 18, resulting in a defined rotation of the cover 22 relative to the Base body 12 leads.
- FIG. 5 Another preferred embodiment of an inventive Valve turning device 10 'can be seen in FIG. 5.
- the essential components of this embodiment accordingly those of the valve turning device described above 10, so the correspondingly labeled components are not to be explained further.
- an axial spring device 30 ' a disk spring assembly comprising a plurality of disk springs 32 'is provided, through which a defined, high axial force can be set is.
- valve rotating device with a separate arrangement of the balls 16 and the axial spring device 30 compared to conventional devices the balls 16 and the ball raceways 18 are drastically relieved, so that undesirable deformations on these rotating components, the so-called pitting formation, as far as possible be prevented.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rolling Contact Bearings (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Taps Or Cocks (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Description
- Fig. 1
- eine schematische Querschnittsansicht durch eine erfindungsgemäße Ventildrehvorrichtung;
- Fig. 2
- eine schematische Draufsicht auf den Grundkörper der Ventildrehvorrichtung von Fig. 1;
- Fig. 3
- die Detail-Schnittdarstellung des Schnittes A-A von Fig. 1 in Ruhestellung bei geschlossenem Ventil;
- Fig. 4
- die Detail-Schnittansicht gemäß dem Schnitt A-A von Fig. 1 bei Beaufschlagung einer Ventilfederkraft bei geöffnetem Ventil und
- Fig. 5
- eine schematische Querschnittsansicht einer weiteren Ausführungsform der erfindungsgemäßen Ventildrehvorrichtung.
Claims (7)
- Ventildrehvorrichtung miteinem ringförmigen Grundkörper (12), in welchem in Umfangsrichtung mehrere, mit geneigten Kugellaufbahnen (18) versehene Kugeltaschen (14) eingebracht sind, in welchen jeweils eine Kugel (16) und eine Tangentialfeder (20) angeordnet sind, wobei die Tangentialfeder (20) in einer Ruhestellung die Kugel (16) an einem oberen Punkt der geneigten Kugellaufbahn (18) hält,einem ringförmigen Deckel (22), welcher relativ zu dem Grundkörper (12) um eine Drehachse verdrehbar und axial verschiebbar ist, undeiner Axialfedereinrichtung (30), welche zwischen dem Grundkörper (12) und dem Deckel (22) angeordnet ist und diese in der Ruhestellung axial auseinanderdrückt, wobei bei Beaufschlagung einer Ventilfederkraft der Grundkörper (12) und der Deckel (22) axial gegeneinandergedrückt werden und dabei die Kugeln (16) entlang der Kugellaufbahnen (18) zu einem unteren Punkt rollen, wobei eine definierte Drehung zwischen dem Grundkörper (12) und dem Deckel (22) erfolgt,wobei die Kugeln (16) unmittelbar mit dem Deckel (22) in Berührung stehen und von der Axialfedereinrichtung (30) in radialer Richtung zur Drehachse beabstandet sind,dass zwischen der Axialfedereinrichtung (30) einerseits und dem Grundkörper (12) oder dem Deckel (22) andererseits ein Wälzlager (24) angeordnet ist, auf welchem sich eine axiale Seite der Axialfedereinrichtung (30) abstützt, unddass in radialer Richtung die Axialfedereinrichtung (30) innenliegend und die Kugeln (16) außenliegend angeordnet und beabstandet sind.
- Ventildrehvorrichtung nach Anspruch 1,
dadurch gekennzeichnet, dass der Deckel (22) relativ zum Grundkörper (12) durch das Wälzlager (24) um die Drehachse drehbar gelagert und geführt ist. - Ventildrehvorrichtung nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass drei bis sechs, vorzugsweise vier Kugeltaschen (14) vorgesehen sind, die gleichmäßig entlang des Umfangs des Grundkörpers (12) verteilt sind. - Ventildrehvorrichtung nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, dass die Neigung der Kugellaufbahn (18) der Kugeltaschen (14) einheitlich ist und zwischen 6 bis 15 Grad beträgt. - Ventildrehvorrichtung nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, dass die Axialfedereinrichtung (30) mindestens eine Tellerfeder (32), vorzugsweise ein Tellerfederpaket, umfasst. - Ventildrehvorrichtung nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet, dass das Wälzlager (24) ein Nadellager ist. - Ventildrehvorrichtung nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet, dass die Kugeln (16) an dem unteren Punkt der Kugellaufbahn (18) in der Kugeltasche (14) vollständig aufgenommen ist und
dass der Grundkörper (12) in dieser Stellung an dem Deckel (22) auf Anschlag anliegt.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10015417A DE10015417A1 (de) | 2000-03-28 | 2000-03-28 | Ventildrehvorrichtung |
DE10015417 | 2000-03-28 | ||
PCT/EP2001/003545 WO2001073270A1 (de) | 2000-03-28 | 2001-03-28 | Ventildrehvorrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1268986A1 EP1268986A1 (de) | 2003-01-02 |
EP1268986B1 true EP1268986B1 (de) | 2003-07-30 |
Family
ID=7636717
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01927826A Expired - Lifetime EP1268986B1 (de) | 2000-03-28 | 2001-03-28 | Ventildrehvorrichtung |
Country Status (6)
Country | Link |
---|---|
US (1) | US6662770B2 (de) |
EP (1) | EP1268986B1 (de) |
AT (1) | ATE246310T1 (de) |
AU (1) | AU2001254752A1 (de) |
DE (2) | DE10015417A1 (de) |
WO (1) | WO2001073270A1 (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7892974B2 (en) | 2000-04-11 | 2011-02-22 | Cree, Inc. | Method of forming vias in silicon carbide and resulting devices and circuits |
DE10315493B4 (de) * | 2003-04-04 | 2005-03-17 | Engesser, Michael, Dr. | Ventildrehvorrichtung |
US7902398B2 (en) | 2007-04-25 | 2011-03-08 | Celanese International Corporation | Method and apparatus for carbonylation with reduced catalyst loss |
US7997243B2 (en) * | 2008-04-30 | 2011-08-16 | Florek Bronislaw B | Ball type valve rotator |
CN101975097B (zh) * | 2010-10-15 | 2012-10-03 | 章升谊 | 内燃机气门旋转机构 |
US8714184B1 (en) | 2011-02-17 | 2014-05-06 | Bronislaw B. Florek | Caged ball and spring valve rotator |
DE102017126541B3 (de) * | 2017-11-13 | 2018-11-22 | Federal-Mogul Valvetrain Gmbh | Ventildrehvorrichtung für Verbrennungsmotoren |
DE102020111090A1 (de) * | 2020-04-23 | 2021-10-28 | Federal-Mogul Valvetrain Gmbh | Deckelkörper für ventildrehvorrichtung, entsprechende ventildrehvorrichtung und verfahren zur herstellung des deckelkörpers |
CN112112702B (zh) * | 2020-09-17 | 2021-12-21 | 潍柴动力股份有限公司 | 一种气门旋转机构及发动机 |
DE102021122847A1 (de) | 2021-09-03 | 2023-03-09 | Federal-Mogul Valvetrain Gmbh | Ventildrehvorrichtung und Verbundkomponente dafür |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2624323A (en) | 1950-07-22 | 1953-01-06 | Thompson Prod Inc | Valve rotating assembly |
US2775232A (en) | 1953-06-19 | 1956-12-25 | Julius E Witzky | Valve rotator |
US2855913A (en) | 1954-10-22 | 1958-10-14 | Gen Motors Corp | Valve rotator |
US2827886A (en) | 1956-01-19 | 1958-03-25 | Gen Motors Corp | Valve rotator |
CH476203A (de) | 1967-07-19 | 1969-07-31 | Sulzer Ag | Ventil einer Kolbenbrennkraftmaschine |
DE1955820B1 (de) * | 1969-11-06 | 1971-08-26 | Teves Thompson Gmbh | Vorrichtung zum Drehen eines Tellerventils fuer Brennkraftmaschinen |
US4075987A (en) | 1975-04-23 | 1978-02-28 | Trw Inc. | Valve rotator |
US4141325A (en) | 1976-12-23 | 1979-02-27 | Trw Inc. | Valve rotator |
US4227493A (en) * | 1979-02-07 | 1980-10-14 | Trw Inc. | Valve rotator |
US5148779A (en) * | 1990-05-09 | 1992-09-22 | Koyo Seiko Co., Ltd. | Valve rotating apparatus of internal-combustion engine |
-
2000
- 2000-03-28 DE DE10015417A patent/DE10015417A1/de not_active Withdrawn
-
2001
- 2001-03-28 AU AU2001254752A patent/AU2001254752A1/en not_active Abandoned
- 2001-03-28 DE DE50100444T patent/DE50100444D1/de not_active Expired - Fee Related
- 2001-03-28 AT AT01927826T patent/ATE246310T1/de not_active IP Right Cessation
- 2001-03-28 US US10/239,052 patent/US6662770B2/en not_active Expired - Fee Related
- 2001-03-28 WO PCT/EP2001/003545 patent/WO2001073270A1/de active IP Right Grant
- 2001-03-28 EP EP01927826A patent/EP1268986B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE10015417A1 (de) | 2001-01-25 |
AU2001254752A1 (en) | 2001-10-08 |
DE50100444D1 (de) | 2003-09-04 |
US20030037742A1 (en) | 2003-02-27 |
WO2001073270A1 (de) | 2001-10-04 |
ATE246310T1 (de) | 2003-08-15 |
EP1268986A1 (de) | 2003-01-02 |
US6662770B2 (en) | 2003-12-16 |
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