EP1741881B1 - Cuvette butée de ressort de soupape avec augmentation radial de force - Google Patents

Cuvette butée de ressort de soupape avec augmentation radial de force Download PDF

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Publication number
EP1741881B1
EP1741881B1 EP06013500A EP06013500A EP1741881B1 EP 1741881 B1 EP1741881 B1 EP 1741881B1 EP 06013500 A EP06013500 A EP 06013500A EP 06013500 A EP06013500 A EP 06013500A EP 1741881 B1 EP1741881 B1 EP 1741881B1
Authority
EP
European Patent Office
Prior art keywords
supporting
valve
spring
spring plate
annular disc
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.)
Not-in-force
Application number
EP06013500A
Other languages
German (de)
English (en)
Other versions
EP1741881A3 (fr
EP1741881A2 (fr
Inventor
Thomas Dr.-Ing. Muhr
Jochen Dr.-Ing. Asbeck
Vladimir Kobelev
Karsten Westerhoff
Jörg Dieter Brecht
Andreas Hees
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Muhr und Bender KG
Original Assignee
Muhr und Bender KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Muhr und Bender KG filed Critical Muhr und Bender KG
Publication of EP1741881A2 publication Critical patent/EP1741881A2/fr
Publication of EP1741881A3 publication Critical patent/EP1741881A3/fr
Application granted granted Critical
Publication of EP1741881B1 publication Critical patent/EP1741881B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • 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

Definitions

  • the invention relates to a spring plate for a valve spring of an internal combustion engine, which is directly connectable to the valve stem of a gas exchange valve under engagement in an annular groove in the valve stem.
  • Spring plates of this type hold and center the valve springs of gas exchange valves which are arranged concentrically to the valve stem and in particular supported by a second spring plate on the cylinder head.
  • the valve actuation via the exertion of compressive forces on the over the spring plate protruding free end of the valve stem by cams, rocker arms or drag lever, wherein between these actuators and the spring plate clearance compensation devices can be used.
  • a spring plate for valve springs with an annular disc for resting on the valve spring and two of this annular disc radially inwardly directed outriggers, which are formed on the outer edge of the annular disk known.
  • the supports connect with a C-shaped bend on the outer edge of the annular disc and are straight in the further course up to its free end.
  • the spring plate is made of sheet metal of uniform thickness.
  • Object of the present invention is to provide a comparison with these known devices improved short and stiff spring plate and an arrangement of such a spring plate and a gas exchange valve.
  • the solution consists in a spring plate for a valve spring of a Brenrikraftmaschine, which is directly connected to the valve stem of a gas exchange valve engaged with an annular groove in the valve stem, with an annular disc for resting on the valve spring and individual from this annular disc radially outwardly directed support tongues whose inner ends in plan view of the spring plate have recesses for engaging in the annular groove, wherein the support tongues are designed so that with axial support of the annular disc from the valve spring side and axial loading of the support tongues in the direction of the valve spring side towards the distance between the inner ends of the individual Support tongues is reduced, or wherein the support tongues are designed so that when axial support of the annular disc from the valve spring side and axial loading of the support tongues in the direction of the valve spring side of the system pressure between the inner ends of the individual Abstüt is enlarged, and wherein the inner ends of the supports to one of Slits divided support sleeve are formed, the wall thickness decreases towards its free end and where
  • the solution further consists in a corresponding arrangement of a gas exchange valve of an internal combustion engine having a valve stem with an annular groove and a spring plate for a valve spring which is directly connected to the valve stem under engagement with the annular groove, wherein the spring plate with an annular disc for resting on the valve spring and individual from this annular disc radially outwardly directed support tongues whose inner ends in view of the annular disc recesses for engagement in the annular groove is provided, wherein in axial support of the annular disc by the valve spring and axial loading of the support tongues by a ring flank in the annular groove in the direction of the valve spring side, the distance between the inner ends of the individual support tongues is reduced, or wherein the support tongues are designed so that in axial support of the annular disc by the valve spring and axial loading of the support tongues by a ring flank in the annular groove in the direction of the valve spring side towards the system pressure between the inner ends of the individual support tongues is increased, and wherein the inner ends of the support tongue
  • the inner annular edges of the support tongues are spaced axially relative to a support line for the valve spring on the annular disc in the direction of the end of the valve stem. It is further provided that straight lines include an obtuse angle through the inner annular edges of the support tongues and the support line for the valve spring on the annular disc, which opens in the direction of the valve spring. It is further proposed that the number of Abstützzept is limited to two. Hereby, a much stiffer design without substantial increase in mass can be achieved. The production of the spring plate and the mountability of the arrangement are also significantly simplified.
  • the spring plate is provided that are formed in plan view of the spring plate between the supporting tongues and the annular disc two opposing crescent-shaped Ausbrechungen side to the support tongues.
  • the recesses at the inner ends of the support tongues complement each other in a plan view of the spring plate to the circle.
  • the recesses at the inner ends of the support tongues complement each other in plan view of the spring plate to an oval whose shorter inner dimension extends in the direction of the supporting tongues. While in the first alternative, a substantially uniform edge load is achieved in an advantageous manner, in the second alternative, a slight tilting of the spring plate for self-aligning on the valve stem in adaptation to the valve spring is possible.
  • the preferred production of the spring plate according to the invention is that the product is first pulled and punched from an annular disk or a blank. This is followed by a heat treatment, a subsequent shot peening and grinding at least the end face to rest in the annular groove and the inner edges, which form the insertion.
  • FIG. 1 and the FIG. 2 The individual representations of the FIG. 1 and the FIG. 2 will be described together below.
  • an outer annular disc 12 and two of these radially inwardly projecting support tongues 13 can be seen.
  • the number of supporting tongues 13 is limited to two here in a preferred manner.
  • the spring plate 11 in total and in particular the support tongues 13 are symmetrical to a sectional plane AA through the center axis Z of the spring plate 11.
  • the inner ends 14 of the support tongues 13 have in the tension-free position of the spring plate 11 shown here a distance d from each other in the direction of the sectional plane BB ,
  • the front ends 14 of the support tongues 13 have approximately semicircular recesses 15, which together form an insertion opening 16.
  • the support tongues 13 can be axially and radially supported in an annular groove of a valve stem of a gas exchange valve of an internal combustion engine under engagement in the annular groove.
  • the shape of the recesses 15 can complement each other to form a circle or form an oval whose major axis extends in the direction of the sectional plane AA.
  • the insertion opening 16 formed by the recesses 15 can also be designed as a polygon in plan view, which inscribes the previously described curves (circle or oval).
  • the support tongues 13 are configured such that between the support tongues 13 and the annular disc 12 two opposite crescent-shaped Ausbrechungen 17 form. With a circular line the support or support line 18 is marked for a valve spring on the annular disc 12.
  • the diameter ⁇ 18 of the support line 18 thus corresponds to the mean winding diameter of an associated helical valve spring.
  • the intended position of the valve spring is below the spring plate in the representation of the top view FIG. 1b to accept. Visible is thus the top of the spring plate, which hangs with its underside on the valve spring, which is not shown.
  • the supporting tongues 13 are deformed in the region of the inner ends 14 to form a centrally divided support sleeve 19, which forms two slots 24 of constant width (d) between the supporting tongues 13.
  • the substantially constant wall thickness having material of the entire spring plate 11 is reduced in the region of the support sleeve 19.
  • the insertion opening 16 is made of an inner cylinder portion 20 having a diameter ⁇ 20 and an inner cone portion 21 formed with an acute opening angle ⁇ 21.
  • the opening angle ⁇ 21 may preferably be in the order of 5-10 °, in particular at 8.5 °.
  • the wall thickness of the support sleeve 19 is decreasing towards the free end of the support sleeve 19, wherein an outer cone surface 22 forms a larger opening angle ⁇ 22 than the inner cone portion 21, wherein the opening angle ⁇ 22 are preferably in the order of 20-30 °, in particular 26 ° can.
  • section BB can be seen that the spring plate halves are each S-shaped curved in section through the supporting tongues 13 and pass approximately tangentially into the support sleeve 19.
  • FIGS. 3 and 4 will be described together below. It is shown the aborted illustrated valve stem 31 of a gas exchange valve in which a small distance from a pressure surface 32 for a cam or the like, an annular groove 33 is formed in a rectangular shape, the groove bottom has the diameter 033. This diameter ⁇ 33 is greater than the diameter ⁇ 20 of the cylinder portion 20 of the support sleeve 19 of the spring plate 11 in the relaxed state.
  • the spring plate 11 is mounted in the annular groove 33, wherein he is with the support edge 23 and its end face 25 on a ring flank 34 of the annular groove 33 is supported and bears with the cylinder portion 20 of the support sleeve 19 under bias at the bottom of the annular groove.
  • FIG. 5 and the FIG. 6 The individual representations of the FIG. 5 and the FIG. 6 will be described together below.
  • an inventive spring plate 11 ' are an outer annular disc 12' and two of this radially inwardly projecting support tongues 13 'can be seen.
  • the number of supporting tongues 13 ' is limited to two here in a preferred manner.
  • the spring plate 11 'overall and in particular the support tongues 13' are symmetrical to a sectional plane AA through the central axis Z of the spring plate 11 '.
  • the inner ends 14 'of the support tongues 13' lie in the position shown here of the spring plate 11 'in the sectional plane AA stress-free or supporting with pressure bias touching to each other.
  • the front ends 14 'of the support tongues 13' have recesses 15 'which form an insertion opening 16'.
  • the support tongues 13' can be axially supported in an annular groove of a valve stem of a gas exchange valve of an internal combustion engine by engaging in the annular groove.
  • the shape of the recesses 15 ' can complement each other to form a circle or form an oval whose major axis extends in the direction of the sectional plane AA.
  • the insertion opening 16 'formed by the recesses 15' can also be designed as a polygon in plan view, which inscribes the previously described curves (circle or oval).
  • the support tongues 13 ' are designed so that between the support tongues 13' and the annular disc 12 'form two opposite crescent-shaped Ausbrechungen 17'.
  • a circular line the support or support line 18 for a valve spring on the annular disc 12 'is marked.
  • the diameter ⁇ 18 of the support line 18 thus corresponds to the mean turn diameter of an associated helical valve spring.
  • the intended position of the valve spring is below the spring plate in the representation of the top view FIG. 1b to accept. Visible is thus the top of the spring plate, which hangs with its underside on the valve spring, which is not shown.
  • the support tongues 13 ' are deformed in the region of the inner ends 14' to a centrally divided support sleeve 19 ', which forms two slots 24' of wedge-shaped form between the support tongues 13 '.
  • the substantially constant wall thickness material of the entire spring plate 11 ' is reduced in the region of the support sleeve 19'.
  • the insertion opening 16 ' is formed of an inner cylinder portion 20' with a diameter ⁇ 20 and an inner cone portion 21 'with an opening angle ⁇ 21'.
  • the opening angle ⁇ 21 ' may preferably be in the order of 40-60 °, in particular at 50 °.
  • the wall thickness of the support sleeve 19 ' is decreasing towards the free end of the support sleeve 19', wherein an outer cone surface 22 forms an opening angle ⁇ 22, which may preferably be in the order of 20-30 °, in particular at 26 °.
  • section BB can be seen that the spring plate halves are each S-shaped curved in section through the supporting tongues 13 'and pass approximately tangentially into the support sleeve 19'.
  • the spring plate 11 ' With an end face 25 ', in particular with an inner support edge 23 at the free end of the support sleeve 19', the spring plate 11 'is supported in an annular groove on the valve stem under load by the valve spring.
  • FIGS. 7 and 8 will be described together below. It is the aborted illustrated valve stem 31 'of a gas exchange valve shown in which a small distance from a pressure surface 32' for a cam or the like, an annular groove 33 'is formed in a rectangular shape, the groove bottom has the diameter 033'. This diameter ⁇ 33 'is smaller than the diameter ⁇ 20 of the cylinder portion 20 'of the support sleeve 19' of the spring plate 11 'in the relaxed state.
  • the spring plate 11 ' is mounted in the annular groove 33', wherein it is supported with the support edge 23 'and its end face 25' on a ring flank 34 'of the annular groove 33', while the support sleeve 19 'radial clearance against the groove bottom the annular groove 33 'has, so that the spring plate 11' with the valve spring, not shown, is freely rotatable relative to the valve stem of the gas exchange valve.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Check Valves (AREA)
  • Safety Valves (AREA)
  • Springs (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Pens And Brushes (AREA)

Claims (11)

  1. Coupelle de ressort (11) pour un ressort de soupape d'un moteur à combustion interne, qui peut être reliée directement à la queue de soupape (31) d'une soupape d'échange des gaz par venue en prise dans une rainure annulaire (33) dans la queue de soupape (31),
    comprenant un disque annulaire (12) destiné à l'appui sur le ressort de soupape, et des languettes d'appui (13) individuelles dirigées radialement vers l'intérieur en étant issues de ce disque annulaire (12), et dont les extrémités intérieures (14) présentent, en vue en plan sur la coupelle de ressort (11), des évidements (15) destinés à la venue en prise dans la rainure annulaire (33),
    les languettes d'appui (13) étant conçues de façon telle que dans le cas d'un appui axial du disque annulaire (12) à partir du côté du ressort de soupape et d'une sollicitation axiale des languettes d'appui (13) en direction du côté du ressort de soupape, la distance entre les extrémités intérieures (14) des languettes d'appui (13) individuelles, soit diminuée,
    caractérisée en ce que les extrémités intérieures (14) des languettes d'appui (13) sont réalisées en forme de douille d'appui (19) divisée par des fentes (24), l'épaisseur de paroi de la douille d'appui (19) diminuant en direction de son extrémité libre, et en ce que dans la coupe axiale (B-B) de la coupelle de ressort (11) passant par le milieu des languettes d'appui (13), une moitié respective de disque annulaire (12) présente avec la languette d'appui (13) respective un tracé selon une forme en S ou en Z.
  2. Coupelle de ressort (11) pour un ressort de soupape d'un moteur à combustion interne, qui peut être reliée directement à la queue de soupape (31) d'une soupape d'échange des gaz par venue en prise dans une rainure annulaire (33) dans la queue de soupape (31),
    comprenant un disque annulaire (12) destiné à l'appui sur le ressort de soupape, et des languettes d'appui (13) individuelles dirigées radialement vers l'inférieur en étant issues de ce disque annulaire (12) destiné à l'appui sur le ressort de soupape, et dont les extrémités intérieures (14) présentant, en vue en plan sur la coupelle de ressort (11), des évidements (15) destinés à la venue en prise dans la rainure annulaire (33),
    les languettes d'appui (13) étant conçues de façon telle que dans le cas d'un appui axial du disque annulaire (12) à partir du côté du ressort de soupape et d'une sollicitation axiale des languettes d'appui (13) en direction du côté du ressort de soupape, la pression d'appui entre les extrémités intérieures (14) des languettes d'appui (13) individuelles, soit augmentée,
    caractérisée en ce que les extrémités intérieures (14) des languettes d'appui (13) sont réalisées en forme de douille d'appui (19) divisée par des fentes (24), l'épaisseur de paroi de la douille d'appui (19) diminuant en direction de son extrémité libre, et en ce que dans la coupe axiale (B-B) de la coupelle de ressort (11) passant par le milieu des languettes d'appui (13), une moitié respective de disque annulaire (12) présente avec la languette d'appui (13) respective un tracé selon une forme en S ou en Z.
  3. Coupelle de ressort selon l'une des revendications 1 ou 2,
    caractérisée en ce que des bords d'appui intérieurs (23) des languettes d'appui (13) sont espacés axialement par rapport à une ligne d'appui (18) pour le ressort de soupape sur le disque annulaire (12), en direction de l'extrémité de la queue de soupape.
  4. Coupelle de ressort selon l'une des revendications 1 à 3,
    caractérisée en ce que des droites passant par les bords d'appui intérieurs (23) des languettes d'appui (13) et la ligne d'appui (18) pour le ressort de soupape sur le disque annulaire (12), forment entre-elles un angle obtus α 23, qui s'ouvre en direction du ressort de soupape.
  5. Coupelle de ressort selon l'une des revendications 1 à 4,
    caractérisée en ce que sont prévues deux languettes d'appui (13) opposées radialement l'une à l'autre.
  6. Coupelle de ressort selon l'une des revendications 1 à 5,
    caractérisée en ce que vue en plan sur la coupelle de ressort (11), entre les languettes d'appui (13) et le disque annulaire (12), sont formés, latéralement aux languettes d'appui (13), des évidements de passage (17) en forme de faucille mutuellement opposés.
  7. Agencement constitué d'une soupape d'échange de gaz d'un moteur à combustion interne, comprenant une queue de soupape (31) avec une rainure annulaire (33) et une coupelle de ressort (11) pour une ressort de soupape, qui est relié directement à la queue de soupape (31) en venant en prise dans la rainure annulaire (33), la coupelle de ressort (11) étant pourvue d'un disque annulaire (12) destiné à l'appui sur le ressort de soupape, et de languettes d'appui (13) individuelles dirigées radialement vers l'intérieur en étant issues de ce disque annulaire (12), et dont les extrémités intérieures (14) présentent, en vue en plan sur la coupelle de ressort (11), des évidements (15) destinés à la venue en prise dans la rainure annulaire (33),
    les languettes d'appui (13) étant conçues de façon telle, que dans le cas d'un appui axial du disque annulaire (12) par le ressort de soupape et d'une sollicitation axiale des languettes d'appui (13) par un flanc annuaire (34) dans la rainure annulaire (33), en direction du côté du ressort de soupape, la distance entre les extrémités intérieures (14) des languettes d'appui (13) individuelles, soit diminuée,
    caractérisée en ce que les extrémités intérieures (14) des languettes d'appui (13) sont réalisées en forme de douille d'appui (19) divisée par des fentes (24), l'épaisseur de paroi de la douille d'appui (19) diminuant en direction de son extrémité libre, et en ce que dans la coupe axiale (B-B) de la coupelle de ressort (11) passant par le milieu des languettes d'appui (13), une moitié respective de disque annulaire (12) présente avec la languette d'appui (13) respective un tracé selon une forme en S ou en Z.
  8. Agencement constitué d'une soupape d'échange de gaz d'un moteur à combustion interne, comprenant une queue de soupape (31) avec une rainure annulaire (33) et une coupelle de ressort (11) pour un ressort de soupape, qui est relié directement à la queue de soupape (31) en venant en prise dans la rainure annulaire (33), la coupelle de ressort (11) étant pourvue d'un disque annulaire (12) destiné à l'appui sur le ressort de soupape, et de languettes d'appui (13) individuelles dirigées radialement vers l'intérieur en étant issues de ce disque annulaire (12), et dont les extrémités intérieures (14) présentent, en vue en plan sur la coupelle de ressort (11), des évidements (15) destinés à la venue en prise dans la rainure annulaire (33),
    les languettes d'appui (13) étant conçues de façon telle que dans le cas d'un appui axial du disque annulaire (12) par le ressort de soupape et d'une sollicitation axiale des languettes d'appui (13) par un flanc annulaire (34) dans la rainure annulaire (33), en direction du côté du ressort de soupape, la pression d'appui entre les extrémités intérieures (14) des languettes d'appui (13) individuelles, soit augmentée,
    caractérisé en ce que les extrémités intérieures (14) des languettes d'appui (13) sont réalisées en forme de douille d'appui (19) divisée par des fentes (24), l'épaisseur de paroi de la douille d'appui (19) diminuant en direction de son extrémité libre, et en ce que dans la coupe axiale (B-B) de la coupelle de ressort (11) passant par le milieu des languettes d'appui (13), une moitié respective de disque annulaire (12) présente avec la languette d'appui (13) respective un tracé selon une forme en S ou en Z.
  9. Agencement selon l'une des revendications 7 ou 8,
    caractérisé en ce que des bords d'appui intérieurs (23) des languettes d'appui (13) sont espacés axialement par rapport à une ligne d'appui (18) pour le ressort de soupape sur le disque annulaire (12), en direction de l'extrémité de la queue de soupape (31).
  10. Agencement selon l'une des revendications 7 à 9,
    caractérisé en ce que des droites passant par les bords d'appui intérieurs (23) des languettes d'appui (13) et la ligne d'appui (18) pour le ressort de soupape sur le disque annulaire (12), forment entre-elles un angle obtus, qui s'ouvre en direction du ressort de soupape.
  11. Agencement selon l'une des revendications 7 à 10,
    caractérisé en ce que la rainure annulaire (33) est réalisée sous la forme d'une rainure rectangulaire.
EP06013500A 2005-06-30 2006-06-29 Cuvette butée de ressort de soupape avec augmentation radial de force Not-in-force EP1741881B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005031090 2005-06-30

Publications (3)

Publication Number Publication Date
EP1741881A2 EP1741881A2 (fr) 2007-01-10
EP1741881A3 EP1741881A3 (fr) 2007-02-21
EP1741881B1 true EP1741881B1 (fr) 2009-04-01

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ID=37103052

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06013500A Not-in-force EP1741881B1 (fr) 2005-06-30 2006-06-29 Cuvette butée de ressort de soupape avec augmentation radial de force

Country Status (6)

Country Link
US (1) US20070017474A1 (fr)
EP (1) EP1741881B1 (fr)
JP (1) JP2007009920A (fr)
KR (1) KR20070003650A (fr)
AT (1) ATE427414T1 (fr)
DE (1) DE502006003304D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017206151B3 (de) 2017-04-11 2018-10-11 Ford Global Technologies, Llc Brennkraftmaschine umfassend Ventiltriebe mit Ventilfedern und Verfahren zum Montieren einer derartigen Ventilfeder

Families Citing this family (5)

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Publication number Priority date Publication date Assignee Title
EP1739286A1 (fr) * 2005-06-30 2007-01-03 Muhr und Bender KG Cuvette butée de ressort de soupape avec deux éléments d'appui
DE102007053901B3 (de) * 2007-11-09 2009-05-20 Db Netz Ag Vorrichtung zur Montage und Demontage eines Befestigungsmittels, insbesondere eines Schienenbefestigungsmittels auf einem Tragkörper
CN103797027B (zh) 2010-12-21 2017-05-17 Cj 第一制糖株式会社 具有高丝氨酸乙酰转移酶活性的修饰多肽和表达其的微生物
GB2511509A (en) * 2013-03-04 2014-09-10 Gm Global Tech Operations Inc Engine cylinder head provided with light valve spring bosses
US10690021B2 (en) 2018-06-05 2020-06-23 Ford Global Technologies, Llc Hollow valve spring retainer

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US1453471A (en) * 1921-12-28 1923-05-01 Tarte George Michiel Le Spring retainer
US3612016A (en) * 1970-07-13 1971-10-12 William J Jelen Valve spring retainer
US5275376A (en) * 1992-09-29 1994-01-04 Trw Inc. Spring retainer
US5343835A (en) * 1992-12-07 1994-09-06 Charter Manufacturing Company, Inc. Valve spring retainer
US5293848A (en) * 1993-06-15 1994-03-15 Trw Inc. Spring retainer for a poppet valve and method of assembling
US6273046B1 (en) * 1999-07-26 2001-08-14 Daniel H. Pierce Valve spring retainer with skirt

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017206151B3 (de) 2017-04-11 2018-10-11 Ford Global Technologies, Llc Brennkraftmaschine umfassend Ventiltriebe mit Ventilfedern und Verfahren zum Montieren einer derartigen Ventilfeder

Also Published As

Publication number Publication date
US20070017474A1 (en) 2007-01-25
ATE427414T1 (de) 2009-04-15
JP2007009920A (ja) 2007-01-18
DE502006003304D1 (de) 2009-05-14
EP1741881A3 (fr) 2007-02-21
KR20070003650A (ko) 2007-01-05
EP1741881A2 (fr) 2007-01-10

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