EP1751403A1 - Dispositif d'actionnement de soupapes - Google Patents
Dispositif d'actionnement de soupapesInfo
- Publication number
- EP1751403A1 EP1751403A1 EP05762748A EP05762748A EP1751403A1 EP 1751403 A1 EP1751403 A1 EP 1751403A1 EP 05762748 A EP05762748 A EP 05762748A EP 05762748 A EP05762748 A EP 05762748A EP 1751403 A1 EP1751403 A1 EP 1751403A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- control member
- housing
- valve
- valves
- stop
- 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
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
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/10—Connecting springs to valve members
-
- 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
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
-
- 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
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
- F01L9/21—Valve-gear or valve arrangements actuated non-mechanically by electric means actuated by solenoids
- F01L2009/2132—Biasing means
- F01L2009/2134—Helical springs
- F01L2009/2136—Two opposed springs for intermediate resting position of the armature
-
- 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
- F01L2303/00—Manufacturing of components used in valve arrangements
- F01L2303/01—Tools for producing, mounting or adjusting, e.g. some part of the distribution
Definitions
- the invention relates to a valve actuation device.
- the invention relates more particularly to a device for actuating at least one pair of internal combustion engine valves disposed in a housing of the type comprising, for each valve, magnetization means, at least one spring urging the valve towards a position of equilibrium and comprising a fixed end made integral with an adjustable stop and a movable end made integral in translation with the valve, the adjustable stop comprising engagement means capable of cooperating with engagement means combined with a control member to allow the displacement of the stop relative to the housing, so as to adjust the tare of the spring.
- Such a device is described in document WO0065203A1.
- the device described in this document uses a tool inserted between two adjacent valve actuators
- the tool consists of a rod provided at its end with a portion of disc whose edge has a toothed sector.
- the toothed sector of the tool is intended to mesh with a toothed wheel whose rotation controls the movement of a movable assembly secured to one end of a spring.
- the adjustment of the tare weight of a spring according to this known device is difficult. Indeed, the tool must be introduced with a certain orientation in the device, to allow the toothed sector to penetrate into the device. The tool is then moved laterally towards the toothed wheel of the mobile assembly associated with a spring. The toothed sector must then be brought blind into a position of engagement with the toothed wheel. In this difficult position to reach, the toothed sector can be rotated to perform the spring tare adjustment. When the springs of two adjacent valves must be adjusted, the tool that has set the first spring must be moved laterally to mesh with the adjacent toothed wheel according to the same procedure.
- valve control device therefore generates complex adjustment operations which are hardly compatible with large-scale industrial production.
- complexity of the operations necessary for adjusting the tare of the springs is liable to cause adjustment errors.
- the actuation device is essentially characterized in that the control member is permanently placed in the housing. adjacent to the adjustable stops of the two valves of the same pair, the housing comprising means for guiding and positioning the control member selectively in two engagement positions respectively with the two adjustable stops.
- the invention may include one or more of the following characteristics: the two adjustable stops of a pair of valves are located in separate planes offset in a direction of main movement of the control member,
- the device comprises means for blocking the control member in a deactivated position preventing the movement of an adjustable stop
- the deactivated position corresponds to a simultaneous engagement of the control member with the two adjustable stops of a pair of valves
- the means for blocking the member comprise a movable axis in the housing capable of cooperating with the body of the control member
- control member is slidably mounted in the housing
- the direction of sliding of the control member is substantially parallel to the directions of movement of the valves
- the stop and the control member cooperate in engagement during their respective rotation, and when the control member is in a engagement position, the respective axes of rotation of the stop and the control member are substantially parallel
- the stop comprises a threaded ring mounted on the external thread of a socket provided with engagement means, the socket being mounted free in rotation and locked in translation relative to the housing, the threaded ring being locked in rotation by relative to the housing, so that the rotation of the sleeve causes the threaded ring to move along said sleeve,
- the bush has the general shape of a cylindrical tube, one end of which has a collar, and in that the meshing means are formed on the collar,
- the guidance and positioning means comprise elastic means urging the control member towards one of the engagement positions
- control member comprises a rod-shaped body and a toothed wheel formed at one of the ends of the body, - the control member has a substantially flush end at one face of the housing and comprising means of coupling with an adjusting member, -
- the device comprises, for each valve, a pallet made integral in translation with the valve stem, the pallet being disposed between two magnetization means, the device also comprising two opposing springs urging the valve / pallet assembly towards a position balance.
- FIG. 2 represents a perspective view schematically illustrating a valve actuation device according to the invention, mounted on a cylinder head of an internal combustion engine,
- FIG. 3 represents a perspective view schematically showing part of the arrangement of an actuation device for a pair of valves according to the invention
- FIG. 4 represents a vertical section of part of the actuating device along the line EE in FIG. 3,
- FIG. 5 represents an exploded perspective view of a part of the actuating device of FIGS. 3 and 4, illustrating a part of the control mechanism of one of the two valves,
- FIG. 6 shows a cross-sectional view of the device along the line DD of Figure 3 or along the line BB of Figure 7
- - Figure 7 shows a horizontal sectional view of the device along the line AA of Figure 6
- FIG. 8 represents a side view of only part of the device of FIG. 3 in a first operating position
- FIG. 9 represents a top view of the arrangement of FIG. 8,
- Figure 10 shows a view similar to that of Figure 8, in a second operating position.
- FIG. 1 illustrates an example of an actuator of such a valve called “electromagnetic valve”.
- the actuator conventionally comprises a movable part consisting of a rod 14, one end of which is integral with a pallet 3 disposed between two electromagnets 4, 5 (cf. also FIG. 4). The other end of the movable rod 14 is supported on the end of the valve stem 1
- Each of the springs 6, 7 comprises a fixed end made integral with a fixed stop and a movable end made integral in translation directly or indirectly with the valve and / or the movable rod 14.
- the pallet 3 is subjected to the action of electromagnets 4, 5, so as to move and block the valve 1 in the open or closed position.
- the pallet 3 and the valve 1 can be balanced by the springs 6, 7 between the two open and closed positions.
- the tare of the springs 5, 6 must be adjusted so that, when the electromagnets 4, 5 are not activated, the valve 1 and the pallet 3 are arranged in the equilibrium position between the open and closed positions.
- the soup control mechanism 1 is generally integrated in a housing
- actuator which is mounted directly or indirectly on the cylinder head 19 of an internal combustion engine.
- Figures 3 and 4 show part of the mechanism of Figure 1.
- the elements identical to those described above are designated by the same reference numbers and will not be described in detail a second time.
- the upper spring 6 of the mechanism has a first movable lower end which is made integral with the movable rod 14 by means of a lower cup 20 and a conical hooking device 21.
- the upper end of the spring 6 is made integral with a support washer 46 comprising, for example, three rings (cf. FIG. 5).
- the support washer 46 is itself mounted on a threaded ring 36 screwed onto the external thread of a cylindrical sleeve 26.
- the sleeve 26 is mounted to rotate freely and locked in translation relative to the housing 2. More specifically, the sleeve 26 has at its upper end a flange bearing on the body of the actuator (electromagnet 5 for example) by the 'Intermediate of a support washer 22.
- a toothing is formed on the outer edge of the collar of the sleeve 26 (cf. FIG. 5 in particular).
- the threaded ring 36 is locked in rotation relative to the housing 2.
- the threaded ring 36 has shoulders 23 which engage in housings in the body of the housing 2 and prevent the rotation of the ring 36 around its axis.
- the rotation of the bush 26 causes the threaded ring 36 to move along said bush 26.
- the direction of movement of the threaded ring 36 along the sleeve 26 is determined by the direction of rotation of the sleeve 26.
- the assembly consisting of the sleeve 26, the threaded ring 36 and the support washer 46 forms an adjustable stop 16 for the upper end of the spring 6 as described in more detail below.
- the toothing of the sleeve 26 is intended to cooperate with a complementary thread of a control member 10 preferably oblong in shape.
- the housing 2 includes a housing 1 1 for the member 10 located near the adjustable stops 16 of the two valves 1 of the same pair of valves.
- the control member 10 comprises, for example, a rod-shaped body and a toothed wheel 8 formed at one of the ends of the body.
- the control member 10 is preferably placed permanently in the housing 2.
- the housing 1 1 of the housing 2 is shaped to guide the control member 10, so as to allow its movement selectively in two engagement positions respectively with the two adjustable stops 16.
- the stops 16 and the control member 10 cooperate in engagement during their respective rotation.
- the respective axes of rotation of the stop 16 and the control member 10 are substantially parallel.
- the control member 10 is slidably mounted in the housing 2 in the direction of the longitudinal axis of symmetry of its body. In addition, this direction of sliding of the control member 10 is preferably parallel to the directions of movement of the movable rods 14 bearing on the valves 1.
- the housing 1 1 for the control member 10 opens onto one face of the housing 2 so as to allow the end of the member 10 located opposite the toothed wheel 8 to be flush with the exterior of the housing 2.
- This flush end of the control member 10 has coupling means 25, such as an imprint or an appropriate shape allowing it to be coupled with an external adjustment member (not shown).
- the adjusting member can be, for example, a socket or a key manipulated manually by an operator or by a robot.
- the two adjustable stops 16 of the pair of valves 1 are located respectively in two distinct planes offset in a main direction of movement of the control member 10 (cf. FIG. 4).
- the toothed wheels of the two adjustable stops 16 can be located in separate planes slightly offset according to the direction of movement of the control member 10.
- a small offset of the toothed wheels as described above makes it possible to place the control member 10 in a third so-called deactivated position in which the control member 10 meshes at the same time with the two adjustable stops 16 of a pair of valves. 1.
- the rotation of the stops 16 and of the member 10 is "self-locked".
- Means 15, 17 for locking the control member 10 in the deactivated position can be provided.
- these blocking means may comprise a needle screw 15 mounted in a thread of the housing 2 and the end of which is capable of coming to engage in a conjugate groove 17 formed on the body of the control member 10.
- Elastic means such as a spring 24 can also be mounted on the control member 10 so as to urge the latter towards one of the engagement positions.
- the spring 24 is threaded onto the body of the control member 10 and has one end bearing on a circlip 27 mounted on this same body of the member 10. The other end of the spring 24 can come to bear on a shoulder formed by the housing 1 1 for the member 10 inside the housing 2.
- the actuator 2 can be arranged so that the control member 10 is locked in its deactivated position. That is to say that the body of the control member is locked by the needle screw 15 so that the toothed wheel 8 of the control member 10 meshes with the two adjustable stops at the same time (position shown at Figure 8).
- the device can be dimensioned so that the spring 24 places the member 10 in a high equilibrium position in which the toothed wheel 8 meshes only with the toothing of the sleeve 26 of the adjustable stop 16 of the first spring 6 ( position shown in Figure 10).
- control member 10 can then be pivoted using an adjustment member as described above, so as to adjust the tare of the spring 6 concerned.
- the adjustment member can be coupled to the control member 10 by exerting pressure on the latter. inside the housing 2.
- the control member 10 is thus translated downwards in the housing 2 to a low position in which the toothed wheel 8 meshes this time only with the thread of the sleeve 26 of the stop adjustable 16 of the second spring (position not shown in the figures for the sake of concision)
- the housing 2 can form a stop for the control member 10 limiting its movement towards the interior of the housing 2, at this low position.
- the locking needle screw 15 can again be tightened to guarantee stable adjustment of the springs 6.
- the system can be dimensioned so that, from the high equilibrium position, the tightening the needle screw causes the automatic translation of the control member 10 to the deactivated position.
- the locking screw 15 can cooperate with inclined planes formed by the groove 17 of the body of the control member 10
- control device makes it possible, in a reduced volume, to guarantee simple and reliable adjustment of the valve springs.
- the invention is of course not limited to the embodiment described above.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
- Mechanically-Actuated Valves (AREA)
- Magnetically Actuated Valves (AREA)
- Multiple-Way Valves (AREA)
- Fluid-Driven Valves (AREA)
- Lift Valve (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0450999A FR2870563B1 (fr) | 2004-05-19 | 2004-05-19 | Dispositif d'actionnement de soupapes |
PCT/FR2005/050345 WO2005112543A1 (fr) | 2004-05-19 | 2005-05-19 | Dispositif d'actionnement de soupapes |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1751403A1 true EP1751403A1 (fr) | 2007-02-14 |
EP1751403B1 EP1751403B1 (fr) | 2007-11-07 |
Family
ID=34945057
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05762748A Not-in-force EP1751403B1 (fr) | 2004-05-19 | 2005-05-19 | Dispositif d'actionnement de soupapes |
Country Status (8)
Country | Link |
---|---|
US (1) | US7540265B2 (fr) |
EP (1) | EP1751403B1 (fr) |
JP (1) | JP4879171B2 (fr) |
AT (1) | ATE377697T1 (fr) |
DE (1) | DE602005003222T2 (fr) |
ES (1) | ES2296208T3 (fr) |
FR (1) | FR2870563B1 (fr) |
WO (1) | WO2005112543A1 (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9090315B1 (en) | 2010-11-23 | 2015-07-28 | Piedra—Sombra Corporation, Inc. | Optical energy transfer and conversion system |
US9873495B2 (en) | 2014-12-19 | 2018-01-23 | Stone Aerospace, Inc. | System and method for automated rendezvous, docking and capture of autonomous underwater vehicles |
US10081446B2 (en) | 2015-03-11 | 2018-09-25 | William C. Stone | System for emergency crew return and down-mass from orbit |
US10598404B2 (en) | 2016-06-29 | 2020-03-24 | Research Products Corporation | Damper with adjustable resistance to blade motion |
US11493233B2 (en) | 2016-09-26 | 2022-11-08 | Stone Aerospace, Inc. | Direct high voltage water heater |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2714998B1 (fr) * | 1994-01-07 | 1996-02-09 | Peugeot | Procédé de commande d'un actionneur électromagnétique bistable et dispositif pour sa mise en Óoeuvre. |
DE19506566A1 (de) * | 1995-02-24 | 1996-08-29 | Bayerische Motoren Werke Ag | Elektromagnetische Hubventil-Betätigungsvorrichtung |
DE19631909A1 (de) | 1995-08-08 | 1997-02-13 | Fev Motorentech Gmbh & Co Kg | Verfahren zur Justierung der Ruhelage des Ankers an einem elektromganetischen Aktuator |
FR2792031B1 (fr) | 1999-04-09 | 2001-06-08 | Sagem | Dispositif de commande electromagnetique de soupapes |
FR2792679B1 (fr) | 1999-04-23 | 2001-07-27 | Sagem | Dispositif reglable de commande de soupapes et procede de reglage d'un tel dispositif |
DE10218737A1 (de) * | 2002-04-26 | 2003-12-11 | Bayerische Motoren Werke Ag | Vorrichtung zum Justieren eines in einem Zylinderkopf einer Brennkraftmaschine angeordneten Hubaktuators für ein Gaswechselventil |
US6997146B2 (en) * | 2002-05-22 | 2006-02-14 | Toyota Jidosha Kabushiki Kaisha | Start control method and apparatus for solenoid-operated valves of internal combustion engine |
-
2004
- 2004-05-19 FR FR0450999A patent/FR2870563B1/fr not_active Expired - Fee Related
-
2005
- 2005-05-19 WO PCT/FR2005/050345 patent/WO2005112543A1/fr active IP Right Grant
- 2005-05-19 ES ES05762748T patent/ES2296208T3/es active Active
- 2005-05-19 AT AT05762748T patent/ATE377697T1/de not_active IP Right Cessation
- 2005-05-19 JP JP2007517378A patent/JP4879171B2/ja not_active Expired - Fee Related
- 2005-05-19 DE DE602005003222T patent/DE602005003222T2/de active Active
- 2005-05-19 EP EP05762748A patent/EP1751403B1/fr not_active Not-in-force
- 2005-05-19 US US11/569,420 patent/US7540265B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2005112543A1 * |
Also Published As
Publication number | Publication date |
---|---|
US7540265B2 (en) | 2009-06-02 |
DE602005003222D1 (de) | 2007-12-20 |
ES2296208T3 (es) | 2008-04-16 |
FR2870563A1 (fr) | 2005-11-25 |
FR2870563B1 (fr) | 2006-06-30 |
EP1751403B1 (fr) | 2007-11-07 |
US20080163834A1 (en) | 2008-07-10 |
WO2005112543A1 (fr) | 2005-12-01 |
JP2007538195A (ja) | 2007-12-27 |
JP4879171B2 (ja) | 2012-02-22 |
ATE377697T1 (de) | 2007-11-15 |
DE602005003222T2 (de) | 2008-08-28 |
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