EP1751404A1 - Ventiltriebvorrichtung - Google Patents
VentiltriebvorrichtungInfo
- Publication number
- EP1751404A1 EP1751404A1 EP05762751A EP05762751A EP1751404A1 EP 1751404 A1 EP1751404 A1 EP 1751404A1 EP 05762751 A EP05762751 A EP 05762751A EP 05762751 A EP05762751 A EP 05762751A EP 1751404 A1 EP1751404 A1 EP 1751404A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- control member
- orifice
- housing
- sleeve
- 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.)
- 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
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
- F01L1/462—Valve return spring arrangements
-
- 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 an equilibrium position and comprising a fixed end made integral with an adjustable stop and a movable end linked in translation with the valve, the 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 spring tare, the housing having an orifice located between the adjustable stops of the two valves of the same pair and intended to accommodate the control member capable of selectively cooperate with the two adjustable stops of the two adjacent valves.
- 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 moving 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 adjust the spring tare. 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 incompatible with large-scale industrial production.
- complexity of the operations necessary for adjusting the tare of the springs is liable to cause adjustment errors.
- An object of the present invention is to overcome all or part of the drawbacks of the prior art noted above.
- the actuation device is essentially characterized in that the control member comprises positioning means intended to cooperate with complementary positioning means formed on the housing, so as to allow, on the one hand to identify two stable positions corresponding respectively to the engagement positions with the two adjustable stops of the two valves and, on the other hand, to immobilize the organ in said positions.
- the invention may include one or more of the following characteristics:
- control member and the orifice have combined dimensions preventing lateral movement of the control member inside the orifice between the two stable positions, -
- the control member and the orifice have combined dimensions adapted to allow on the one hand the withdrawal of the control member from the orifice from a first stable position, and on the other hand, its reintroduction into the orifice in the second stable position,
- the stop and the control member cooperate in meshing during their rotation, and when the control member is in a stable position, the respective axes of rotation of the stop and the control member are non-collinear and preferably substantially perpendicular,
- the positioning means comprise an axis mounted on the control member and two orifices formed on the housing and provided for selectively accommodating the axis,
- control member and the orifice have generally oblong shapes
- control member comprises a sleeve and an actuation axis provided with meshing means, the actuation axis being disposed eccentrically in the sleeve relative to the longitudinal axis of the sleeve, - the device comprises means for blocking the axis in translation relative to the sleeve, said blocking means allowing the axis to rotate relative to the sleeve,
- the axis is threaded, and in that the means for engaging the stop consist of complementary toothing, - the orifice has a depth substantially equal to the length of the control member so that, when the control member is disposed in the housing in a stable position, one end of the control member is substantially flush with one face of the housing, the flush end of the control member comprising coupling means with a regulating member, -
- the stop includes 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 relative to the housing, so that the rotation of the bush causes the threaded ring to move along said bush,
- 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 device comprises, for each valve, a pallet made integral in translation with the valve, the pallet being disposed between two magnetization means, the device also comprises two opposing springs urging the valve / pallet assembly towards an equilibrium position .
- 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 actuating device for a pair of valves according to the invention
- FIG. 4 represents a view in longitudinal section of the actuating device of FIG. 3
- - Figure 5 shows an exploded perspective view of a part of the actuating device of Figures 2 and 3, illustrating a part of the control mechanism of one of the two valves
- - Figure 6 shows a cross section of the device according to the line GG in FIG. 2,
- Figure 7 shows a cross section of the device along the line EE in Figure 4
- FIG. 8 represents a perspective view of a detail of the device in FIG. 2.
- 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 rod 1
- Two upper 6 and lower 7 springs are mounted in an antagonistic manner on the rod / valve assembly 14, 1 so as to urge this together towards an equilibrium position (position shown in Figure 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 are not activated, the valve 1 and the pallet 3 are arranged in the equilibrium position between the open and closed positions.
- only one of the two springs 6 associated with a valve 1 has an adjustable tare, to allow its tare to be equalized with that of the other spring 7.
- 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 2 and 3 shows 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.
- the support washer 46 is itself mounted on a threaded ring 36 screwed onto the external thread of a cylindrical bush 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 therefore causes the displacement of the threaded ring 36 along said bush 26.
- the direction of movement of the threaded ring 36 along the bush 26 is determined by the direction of rotation of the socket 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 preferably oblong.
- the housing 2 has an orifice 1 1 situated between the adjustable stops 16 of the two valves 1 of the same pair of valves and intended to receive the control member 8, 10.
- the orifice 11 is preferably oblong and substantially perpendicular to the axes of rotation of the adjustable stops 16.
- the orifice 1 1 has a longitudinal axis substantially perpendicular to the movable rods 14 of the actuation mechanism of the adjacent valves 1.
- control member comprises a sleeve 10 and an actuation screw 8 housed in the sleeve 10.
- the threaded end of the actuation screw 8 projects out of the sleeve 10, to allow its engagement with the thread of the sleeve 26 (see Figures 3, 5, 7 and 8).
- the sleeve 10 has transverse dimensions that are not symmetrical with respect to its longitudinal axis.
- the screw 8 is arranged eccentrically in the sleeve 10 relative to the median longitudinal axis of the sleeve 10 (cf. FIGS. 5, 7 and 8).
- the sleeve 10 has, in its thickness, means 18 for blocking the screw 8 in translation relative to the sleeve 10.
- These blocking means may, for example, example, a pin 18 cooperating with an annular groove January 18 formed on the body of the screw and allowing the rotation of the screw 8 relative to the sleeve 10 (see fig ure 5).
- control member screw 8 and sleeve 10
- orifice 1 1 have combined transverse dimensions preventing lateral movement of the control member 8, 10 inside the orifice 1 1 (cf. figure 7).
- control member 8, 10 cannot move laterally inside the orifice 1 1 between the two engagement positions corresponding respectively to the engagement positions of the screw 8 with the two adjacent adjustable stops 16.
- the sleeve 10 and the orifice 1 1 have combined dimensions adapted to allow on the one hand the withdrawal of the control member 8, 10 out of the orifice in a direction parallel to the longitudinal axis of the port 1 1.
- the control member 8, 10 can be removed from the orifice 11, then pivoted 90 degrees around its longitudinal axis and finally reintroduced in the second position. meshing.
- control member 8, 10 comprises positioning means 12 intended to cooperate with complementary positioning means 13 formed on the housing 2, so as to allow, on the one hand to identify two positions of meshing, and secondly, to immobilize the member 8, 10 in said positions.
- the positioning means 12 comprise an axis 12 such as a screw mounted on the sleeve 10 and two positioning orifices 13, for example threaded, formed on the housing 2 and provided for selectively accommodating the axis 12.
- the positioning axis 12 is parallel to the longitudinal axis of the screw.
- the two orifices 13 for positioning are parallel to the longitudinal axis of the orifice 1 1 oblong.
- Figures 7 and 8 illustrate the perfect positioning according to the invention of the thread of the screw 8 against the thread of the sleeve 26 when the control member 8, 10 is disposed in the orifice 1 1.
- the screwing of the axis 12 in an orifice 13 of the housing allows an operator to unambiguously determine the spring that he is adjusting and thus minimizes the risk of adjustment errors.
- the opening 1 1 also has a depth preferably substantially equal to the length of the control member 8, 10.
- the flush end of the control member 8, 10 can thus comprise coupling means 25, such as that a fingerprint, intended to cooperate with an additional adjustment member 9 such as a key for example (cf. FIGS. 2 and 8).
- the device according to the invention allows adjustment of the valve springs to be simpler than according to the prior art.
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)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0451000A FR2870564B1 (fr) | 2004-05-19 | 2004-05-19 | Dispositif d'actionnement de soupapes |
PCT/FR2005/050346 WO2005113946A1 (fr) | 2004-05-19 | 2005-05-19 | Dispositif d'actionnement de soupapes |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1751404A1 true EP1751404A1 (de) | 2007-02-14 |
EP1751404B1 EP1751404B1 (de) | 2007-08-29 |
Family
ID=34946008
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05762751A Not-in-force EP1751404B1 (de) | 2004-05-19 | 2005-05-19 | Ventiltriebvorrichtung |
Country Status (8)
Country | Link |
---|---|
US (1) | US7654235B2 (de) |
EP (1) | EP1751404B1 (de) |
JP (1) | JP4719741B2 (de) |
AT (1) | ATE371805T1 (de) |
DE (1) | DE602005002270T2 (de) |
ES (1) | ES2289715T3 (de) |
FR (1) | FR2870564B1 (de) |
WO (1) | WO2005113946A1 (de) |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2566247B2 (ja) * | 1987-08-13 | 1996-12-25 | 松下電工株式会社 | 整髪具 |
JPS6446407U (de) * | 1987-09-16 | 1989-03-22 | ||
JPH02267305A (ja) * | 1989-04-10 | 1990-11-01 | Fuji Valve Co Ltd | 内燃機関の動弁機構におけるバルブアジャスタ |
JPH05187211A (ja) * | 1992-01-13 | 1993-07-27 | Chuo Spring Co Ltd | エンジンの動弁装置における弁ばねの組付高さ調整装置 |
JP3623863B2 (ja) * | 1996-09-13 | 2005-02-23 | 株式会社日立製作所 | 電磁バルブ装置及びその駆動装置及び内燃機関 |
WO1998042958A1 (de) * | 1997-03-24 | 1998-10-01 | Lsp Innovative Automotive Systems Gmbh | Elektromagnetische stellvorrichtung |
JP2000154736A (ja) * | 1998-11-17 | 2000-06-06 | Hitachi Ltd | 動弁装置および内燃機関 |
FR2792679B1 (fr) | 1999-04-23 | 2001-07-27 | Sagem | Dispositif reglable de commande de soupapes et procede de reglage d'un tel dispositif |
JP3694804B2 (ja) * | 1999-07-28 | 2005-09-14 | 株式会社日立製作所 | 内燃機関 |
JP2002030911A (ja) * | 2000-07-14 | 2002-01-31 | Riken Corp | 内燃機関用動弁装置 |
FR2820520B1 (fr) * | 2001-02-02 | 2003-05-16 | Sagem | Dispositif d'arret en rotation d'une roue dentee |
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 |
DE10248328A1 (de) * | 2002-10-17 | 2004-04-29 | Bayerische Motoren Werke Ag | Elektromagnetische Ventiltriebvorrichtung mit verdrehgesicherter Neutrallagenverstellschraube |
-
2004
- 2004-05-19 FR FR0451000A patent/FR2870564B1/fr not_active Expired - Fee Related
-
2005
- 2005-05-19 ES ES05762751T patent/ES2289715T3/es active Active
- 2005-05-19 US US11/569,421 patent/US7654235B2/en not_active Expired - Fee Related
- 2005-05-19 AT AT05762751T patent/ATE371805T1/de not_active IP Right Cessation
- 2005-05-19 JP JP2007517379A patent/JP4719741B2/ja not_active Expired - Fee Related
- 2005-05-19 EP EP05762751A patent/EP1751404B1/de not_active Not-in-force
- 2005-05-19 DE DE602005002270T patent/DE602005002270T2/de active Active
- 2005-05-19 WO PCT/FR2005/050346 patent/WO2005113946A1/fr active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO2005113946A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20080029049A1 (en) | 2008-02-07 |
EP1751404B1 (de) | 2007-08-29 |
ATE371805T1 (de) | 2007-09-15 |
JP2007538196A (ja) | 2007-12-27 |
FR2870564A1 (fr) | 2005-11-25 |
DE602005002270T2 (de) | 2008-05-29 |
DE602005002270D1 (de) | 2007-10-11 |
ES2289715T3 (es) | 2008-02-01 |
WO2005113946A1 (fr) | 2005-12-01 |
US7654235B2 (en) | 2010-02-02 |
FR2870564B1 (fr) | 2006-06-30 |
JP4719741B2 (ja) | 2011-07-06 |
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