EP0892154B1 - Vorrichtung zum Drehen eines Ventils - Google Patents
Vorrichtung zum Drehen eines Ventils Download PDFInfo
- Publication number
- EP0892154B1 EP0892154B1 EP97810495A EP97810495A EP0892154B1 EP 0892154 B1 EP0892154 B1 EP 0892154B1 EP 97810495 A EP97810495 A EP 97810495A EP 97810495 A EP97810495 A EP 97810495A EP 0892154 B1 EP0892154 B1 EP 0892154B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- toothed
- toothed element
- rotation
- another
- 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.)
- Revoked
Links
- 238000004804 winding Methods 0.000 claims description 7
- 208000012886 Vertigo Diseases 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
- F02F2007/0097—Casings, e.g. crankcases or frames for large diesel engines
Definitions
- the invention relates to a device for rotating a Valve according to the preamble of claim 1, and a valve device for an engine and a Motor according to the respective independent claim.
- the object of the present invention is therefore to propose a turning device for a valve, which are very simple in terms of their design effort and is consequently also relatively inexpensive, and that of Assembly effort is simple.
- the device according to the invention for rotating the valve thus includes in particular a freewheel device, which is a rotation of the valve about its longitudinal axis allowed, but only in one of the two possible Rotation.
- the freewheel device has two Gearing pieces whose gearing with each other in Intervention can be brought. Furthermore, the Freewheel device still a drive spring.
- the device according to the invention is according to the Assembling the valve and the device for turning same the valve with the one piece of gear connected while it is with the other piece of gear is not connected.
- the gear pieces are like this arranged that their teeth, which are at an angle to Longitudinal valve axis are formed when Move the gear pieces towards each other and away from each other so that the gear pieces when moving towards each other and are rotatable away from each other.
- the driver spring is designed as a wrap spring, which with the gear piece that is not with the Valve is connected, arranged in such a cooperative manner is that when moving the gear pieces towards each other there is no rotation of the valve at which Movement of the gear pieces away from each other the valve rotates, or vice versa. Therefore the freewheel device thus comprises two Gear pieces and a wrap spring is constructive very simple and therefore also comparatively inexpensive and easy to assemble.
- the wrap spring encloses the base part and the first Gear piece in the direction of the valve longitudinal axis at least partially and is firmly attached to both.
- This Embodiment is very easy to assemble and demountable. (In principle, it would also be conceivable that Wrap spring in the base part or in the first Gearing or in both parts).
- the second gear piece with a support plate connected, the backing plate and the second Gear piece in the direction of the valve longitudinal axis immovable relative to one another, however, about the valve longitudinal axis are rotatable against each other.
- a return spring is arranged on the support plate.
- the interlocking of the two Gear pieces and the winding direction of the Wrap spring designed so that when moving the second tooth piece on the first tooth piece too no rotation of the second tooth piece and thus of the valve, but the first Gear piece twisted freely.
- This Embodiment is particularly for an exhaust valve suitable because with this the rotation when closing the Valve should take place.
- the interlocking of the two Gear pieces and the winding direction of the Wrap spring designed so that when moving the second tooth piece on the first tooth piece to a rotation of the second tooth piece and thus of the valve is done while no rotation of the first Gear piece is done.
- Such devices are suitable for rotating a valve especially for valve devices of engines, especially diesel engines.
- valve 1 shows a typical valve device, as used for example in diesel engines comes.
- a valve 1 can be seen which is in the closed position State is arranged in a valve seat 2 (solid lines), the valve 1 is dash-dotted recognizable even in the open state.
- a device for rotating the valve 1 which is generally designated by the reference number 3.
- the Contact area i.e. the area in which the valve 1 on valve seat 2 is here for reasons of depicted in a simplified manner for better clarity, since Fig. 1 is only an overview, the should clarify which part is the Device according to the invention for rotating the valve is.
- the device 3 for rotating the valve comprises a base part 30, a first toothing piece 31, a second toothing piece 32, a driver spring in Form of a wrap spring 33, a support plate 34, a arranged between base part 30 and support plate 34 Return spring 35, and a between the support plate 34th and the second toothing piece 32 Ball bearing 36. Furthermore, some are still not clearly identified designated lubricating oil holes in the individual parts.
- the valve stem, not shown (and thus the Valve) is means in the device shown one conical connection (press fit) with the second Gear piece 32 connected (such as this in Fig. 1 is indicated by dashed lines).
- the base part 30 and the first tooth piece 31 are connected to each other by means of a locking ring 37 (secured) in such a way that the base part 30 and the first tooth piece 31 in the direction of Longitudinal valve axis are immovable against each other.
- the base part 30 and the toothing piece 31 basically rotatable against each other.
- the wrap feather 33 encloses both the base part 30 and the first Gear piece 31 each partially and is tight both parts. This is achieved in that the Inner diameter of the wrap spring 33 slightly smaller is selected as the outer diameter of the base part 30 and the first tooth piece 31 in the areas in which the wrap spring 33 comes to rest. To this A weak press fit of the wrap spring 33 becomes wise reached.
- the toothing 320 can be seen in FIG in one area on the outer wall of the second Gear piece 32 is provided and a corresponding toothing 310 on the inner wall of the first Gear piece 31.
- the toothing 320 on the The outer wall of the second tooth piece 32 is through the dashed or dash-dotted lines indicated, the dash-dotted line the course of the Toothing 320 on the outer wall "in front" of the drawing plane represents, and the dashed line the course of the Interlocking "behind" the drawing level.
- the toothing 320 runs diagonally to the valve longitudinal axis A.
- the wrap spring 33 which is also shown in Fig. 3 has the shape of a spring block with the length L on, so the individual turns are tightly packed each other.
- the Total inner surface of the wrap spring 33 cylindrical shape, causing the surface pressure against the base part 30 and the first tooth piece 31 can be kept lower (the spring lies biased to) than with a different spring cross section.
- the wrap spring 33 works such that at one Torsional load of the spring the spring itself in radial Direction stretches or contracts. Whether it stretches or moving in depends on whether the Direction of torsional load with the sense of winding Wrap spring 33 matches or whether it Winding direction of the wrap spring 33 opposite is oriented.
- the return spring 35 is in the embodiment designed as a spiral spring according to the drawing figures, which are compressible in the direction of the valve longitudinal axis and is stretchy.
- valve is initially closed (solid line in Fig. 1), then opened becomes (dash-dotted line in Fig. 1), and afterwards is closed again (solid line in Fig. 1).
- the valve is over with the second tooth piece 32 the cone connection is firmly connected.
- the opening and The valve can be closed using a (not shown) camshaft controlled like this is common for engines.
- the valve is closed using the Return spring 35, which is on the support plate 34th supports and the support plate 34 together with the second Gear piece 32 again in the direction of Longitudinal valve axis A moved back (here upwards).
- the gear pieces 31 and 32 following their respective toothing 310 or 320 twist against each other.
- the first tooth piece 31 can so do not twist, such twisting is caused by the Wrap spring 33 prevents - the first tooth piece is therefore held.
- the one desired for an exhaust valve Mode of operation of the device achieved:
- the valve is not twisted when opening, but is closed when closed it twisted, possibly on the valve surface accumulated deposits stripped or be sanded, reducing the life of the valve elevated.
- Embodiment could e.g. the wrap spring 33 within the base part 30 and the first Gear piece 31 to be pressed in under pretension.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Mechanically-Actuated Valves (AREA)
Description
- Fig. 1
- Eine Ventilvorrichtung, umfassend ein Ventil, einen Ventilsitz und eine Vorrichtung zum Drehen des Ventils,
- Fig. 2
- ein Ausführungsbeispiel einer erfindungsgemässen
Vorrichtung zum Drehen eines Ventils
und - Fig. 3
- ein Ausführungsbeispiel einer Schlingfeder der erfindungsgemässen Vorrichtung zum Drehen eines Ventils.
Claims (9)
- Vorrichtung (3) zum Drehen eines Ventils (1), mit einer Freilaufeinrichtung, welche eine Drehung des Ventils (1) um dessen Längsachse (A) erlaubt, allerdings nur in eine von beiden möglichen Drehrichtungen, dadurch gekennzeichnet, dass die Freilaufeinrichtung zwei Verzahnungsstücke (31,32) umfasst, die so angeordnet sind, dass ihre Verzahnungen (310,320) miteinander in Eingriff bringbar sind, sowie eine als Schlingfeder ausgebildete Mitnehmerfeder (33), welche Mitnehmerfeder (33) sich bei einer Drehbelastung in radialer Richtung dehnt oder zusammenzieht.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass nach dem Zusammensetzen des Ventils und der Vorrichtung (3) zum Drehen desselben das Ventil (1) mit dem einen Verzahnungsstück (32) fest verbunden ist, während es mit dem anderen Verzahnungsstück (31) nicht verbunden ist, wobei die Verzahnungsstücke (31,32) so angeordnet sind, dass ihre Verzahnungen (310,320), welche schräg zur Ventillängsachse (A) verlaufend ausgebildet sind, beim Bewegen der Verzahnungsstücke (31,32) aufeinander zu und voneinander weg miteinander in Eingriff stehen, sodass die Verzahnungsstücke (31,32) beim Bewegen aufeinander zu und voneiander weg gegeneinander verdrehbar sind, und dass die Mitnehmerfeder als Schlingfeder (33) ausgebildet ist, welche mit demjenigen Verzahnungsstück (31), welches nicht mit dem Ventil (1) verbunden ist, derart zusammenwirkend angeordnet ist, dass bei der Bewegung der Verzahnungsstücke (31,32) aufeinander zu keine Drehung des Ventils (1) erfolgt, bei der Bewegung der Verzahnungsstücke (31,32) voneinander weg hingegen eine Drehung des Ventils (1) erfolgt, oder umgekehrt.
- Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass in Richtung der Ventillängsachse (A) betrachtet zunächst ein Basisteil (30), daran anschliessend ein erstes Verzahnungsstück (31) und schliesslich ein zweites Verzahnungsstück (32) aufeinander folgend angeordnet sind, wobei das Ventil (1) nach dem Zusammensetzen des Ventils (1) und der Vorrichtung (3) zum Drehen des Ventils (1) mit dem zweiten Verzahnungsstück (32) fest verbunden ist, wobei ferner das Basisteil (30) mit dem ersten Verzahnungsstück (31) derart verbunden ist, dass Basisteil (30) und erstes Verzahnungsstück (31) in Richtung der Ventillängsachse (A) gegeneinander unbeweglich, jedoch um die Ventillängsachse (A) gegeneinander verdrehbar sind, und wobei die Schlingfeder (33) sowohl mit dem Basisteil (30) als auch mit dem ersten Verzahnungsstück (31) vorgespannt in Verbindung steht.
- Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die Schlingfeder (33) das Basisteil (30) und das erste Verzahnungsstück (31) in Richtung der Ventillängsachse (A) mindestens teilweise umschliesst und fest an beiden anliegt.
- Vorrichtung nach einem der Ansprüche 3 oder 4, dadurch gekennzeichnet, dass das zweite Verzahnungsstück (32) mit einem Stützteller (34) verbunden ist, wobei der Stützteller (34) und das zweite Verzahnungsstück (32) in Richtung der Ventillängsachse (A) gegeneinander unbeweglich, jedoch um die Ventillängsachse (A) gegeinander verdrehbar sind, und dass zwischen dem Basisteil (30) und dem Stützteller (34) eine Rückstellfeder (35) angeordnet ist.
- Vorrichtung nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, dass die Verzahnung (310,320) der beiden Verzahnungsstücke (31,32) und die Wicklungsrichtung der Schlingfeder (33) so ausgebildet sind, dass beim Bewegen des zweiten Verzahnungsstücks (32) auf das erste Verzahnungsstück (31) zu keine Drehung des zweiten Verzahnungsstücks (32) und damit des Ventils (1) erfolgt, sondern sich das erste Verzahnungsstück (31) freilaufend verdreht, hingegen beim Bewegen des zweiten Verzahnungsstücks (32) vom ersten Verzahnungsstück (31) weg keine Drehung des ersten Verzahnungsstücks (31), sondern eine Drehung des zweiten Verzahnungsstücks (32) und damit des Ventils (1) erfolgt.
- Vorrichtung nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, dass die Verzahnung (310,320) der beiden Verzahnungsstücke (31,32) und die Wicklungsrichtung der Schlingfeder (33) so ausgebildet sind, dass beim Bewegen des zweiten Verzahnungsstücks (32) auf das erste Verzahnungsstück (31) zu eine Drehung des zweiten Verzahnungsstücks (32) und damit des Ventils (1) erfolgt, während keine Drehung des ersten Verzahnungsstücks (31) erfolgt, hingegen beim Bewegen des zweiten Verzahnungsstücks (32) vom ersten Verzahnungsstück (31) weg keine Drehung des zweiten Verzahnungsstücks (32) und damit des Ventils (1) erfolgt, sondern sich das erste Verzahnungsstück (31) freilaufend verdreht.
- Ventilvorrichtung für einen Motor, insbesondere für einen Dieselmotor, mit mindestens einer Vorrichtung (3) zum Drehen eines Ventils (1) gemäss einem der vorangehenden Ansprüche.
- Motor, insbesondere Dieselmotor, mit mindestens einer Ventilvorrichtung gemäss Anspruch 8.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97810495A EP0892154B1 (de) | 1997-07-16 | 1997-07-16 | Vorrichtung zum Drehen eines Ventils |
DE59709505T DE59709505D1 (de) | 1997-07-16 | 1997-07-16 | Vorrichtung zum Drehen eines Ventils |
DK97810495T DK0892154T3 (da) | 1997-07-16 | 1997-07-16 | Indretning til drejning af en ventil |
JP18418198A JPH1172012A (ja) | 1997-07-16 | 1998-06-30 | 弁を回転させるための装置 |
KR1019980028545A KR19990013874A (ko) | 1997-07-16 | 1998-07-15 | 밸브회전용 장치 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97810495A EP0892154B1 (de) | 1997-07-16 | 1997-07-16 | Vorrichtung zum Drehen eines Ventils |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0892154A1 EP0892154A1 (de) | 1999-01-20 |
EP0892154B1 true EP0892154B1 (de) | 2003-03-12 |
Family
ID=8230307
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97810495A Revoked EP0892154B1 (de) | 1997-07-16 | 1997-07-16 | Vorrichtung zum Drehen eines Ventils |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0892154B1 (de) |
JP (1) | JPH1172012A (de) |
KR (1) | KR19990013874A (de) |
DE (1) | DE59709505D1 (de) |
DK (1) | DK0892154T3 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10020071A1 (de) * | 2000-04-22 | 2001-10-25 | Trw Deutschland Gmbh | Ventildrehvorrichtung |
DE102008018612A1 (de) * | 2008-04-11 | 2009-10-29 | Märkisches Werk GmbH | Ventildrehvorrichtung für Auslassventile von Verbrennungsmotoren |
ITPE20110006A1 (it) * | 2011-05-17 | 2012-11-18 | Alessandro Pisciella | Sistema di distribuzione desmodromica con valvole a movimento traslorotante. |
KR101518936B1 (ko) * | 2013-12-16 | 2015-05-11 | 현대자동차 주식회사 | 차량 엔진용 밸브 트레인 |
KR102137493B1 (ko) | 2018-08-30 | 2020-07-24 | (주)유니폴리 | 트랜스액슬 샤프트용 카트리지 오일씰 |
CN110656993B (zh) * | 2019-10-09 | 2020-07-14 | 湖南工学院 | 一种汽车发动机旋阀器 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB122907A (en) * | 1918-02-07 | 1919-02-07 | George Holt Thomas | An Improved Device for obtaining Rotary Motion from Reciprocatory Motion. |
US1347488A (en) * | 1918-08-15 | 1920-07-27 | Stanley B Arnold | Valve |
US1520273A (en) * | 1922-08-19 | 1924-12-23 | Continental Engineering Corp | Rotary valve |
DE19500321A1 (de) * | 1995-01-07 | 1995-06-01 | Klaus Dipl Ing Henze | Ventildrehvorrichtung für Gaswechselventile |
-
1997
- 1997-07-16 DE DE59709505T patent/DE59709505D1/de not_active Revoked
- 1997-07-16 EP EP97810495A patent/EP0892154B1/de not_active Revoked
- 1997-07-16 DK DK97810495T patent/DK0892154T3/da active
-
1998
- 1998-06-30 JP JP18418198A patent/JPH1172012A/ja active Pending
- 1998-07-15 KR KR1019980028545A patent/KR19990013874A/ko not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
JPH1172012A (ja) | 1999-03-16 |
DE59709505D1 (de) | 2003-04-17 |
DK0892154T3 (da) | 2003-04-22 |
EP0892154A1 (de) | 1999-01-20 |
KR19990013874A (ko) | 1999-02-25 |
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