EP1895111B1 - Procédé d'installation d'arbre à cames de moteur à combustion interne et moteur à combustion interne - Google Patents

Procédé d'installation d'arbre à cames de moteur à combustion interne et moteur à combustion interne Download PDF

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Publication number
EP1895111B1
EP1895111B1 EP06757085A EP06757085A EP1895111B1 EP 1895111 B1 EP1895111 B1 EP 1895111B1 EP 06757085 A EP06757085 A EP 06757085A EP 06757085 A EP06757085 A EP 06757085A EP 1895111 B1 EP1895111 B1 EP 1895111B1
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EP
European Patent Office
Prior art keywords
cam
section
camshaft
shaft
shaped jig
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
EP06757085A
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German (de)
English (en)
Japanese (ja)
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EP1895111A1 (fr
EP1895111A4 (fr
Inventor
Yasuo c/o YAMAHA HATSUDOKI KABUSHIKI KAISHA OKAMOTO
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Yamaha Motor Co Ltd
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Yamaha Motor Co Ltd
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Publication date
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Publication of EP1895111A1 publication Critical patent/EP1895111A1/fr
Publication of EP1895111A4 publication Critical patent/EP1895111A4/fr
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Publication of EP1895111B1 publication Critical patent/EP1895111B1/fr
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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
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • F01L1/053—Camshafts overhead type
    • 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
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • F01L2001/0476—Camshaft bearings
    • 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
    • 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 present invention relates to a method of assembling a camshaft for an internal combustion engine and also relates to an internal combustion engine having the camshaft that is assembled with such method.
  • Patent Document 1 One of conventional techniques in this field is disclosed, for example, in Patent Document 1.
  • a lower cam holder (a cam carrier) disposed commonly on both of intake and exhaust camshafts and an upper cam holder (a cam cap) provided on each of the both intake and exhaust camshafts are included, in which both ends of the lower cam holder are fastened to a cylinder head by a first fastening member, two upper cam holders are respectively fastened to a part of the lower cam holder more inward than the first fastening member by a pair of second fastening members having a diameter smaller than that of the first fastening member.
  • the cylinder head can be downsized, and the first fastening member also functions as a stopper for preventing the turn of a rocker shaft.
  • a plurality of cam carriers and cam caps may be mounted in series on the cylinder head, followed by a machining process for improving the assembly condition in order to ensure the accuracy of the assembly positions of the carriers and other components before the camshaft is mounted.
  • large-scale machining equipment is required for the machining process for improvement of the assembly condition.
  • An object of the present invention made in view of the drawbacks described above is to provide a method of assembling a camshaft for an internal combustion engine and an internal combustion engine in which the accuracy of the assembly positions of parts for supporting the journal section can be ensured without using large-scale machining equipment necessary for avoiding deterioration of the contact condition in the journal section and increase of friction in the journal section and further in which only a minimum number of components need to be replaced even if a problem is caused in the cam carrier or in other components.
  • a first aspect of the present invention is directed to a method of assembling a camshaft for an internal combustion engine in which the camshaft is assembled to a cylinder head via a plurality of sets of cam carriers and cam caps separately provided in each journal section, the method including the steps of: preparing a shaft-shaped jig the length of which is as long as the whole of a plurality of the cam carriers, and the shaft diameter of which in a fitting section in a part corresponding to the journal section is larger than the shaft diameter of the journal section; and positioning a plurality of the cam carriers in a predetermined position by mounting the shaft-shaped jig on the cylinder head via a plurality of the cam carriers.
  • a second aspect of the present invention is directed to a method of assembling a camshaft for an internal combustion engine in which the camshaft is assembled to a cylinder head via a plurality of sets of cam carriers and cam caps separately provided in each journal section, the method including the steps of: preparing a shaft-shaped jig the shaft diameter of which in a fitting section in a part corresponding to the journal section of the camshaft to be actually assembled is larger than the shaft diameter of the journal section; positioning a plurality of the cam carriers in a predetermined position by mounting the shaft-shaped jig on the cylinder head via a plurality of sets of the cam carriers and the cam caps; removing a plurality of the cam caps with a plurality of the cam carriers being fastened to the cylinder head; replacing the shaft-shaped jig with the camshaft to be actually used; and fastening a plurality of the cam caps.
  • a third aspect of the present invention is directed to a method of assembling a camshaft for an internal combustion engine in which the camshaft is assembled to a cylinder head via a plurality of sets of cam carriers and cam caps separately provided in each journal section, the method including the steps of: preparing a shaft-shaped jig the shaft diameter of which in a fitting section in a part corresponding to the journal section of the camshaft to be actually assembled is larger than the shaft diameter of the journal section; positioning a plurality of the cam carriers in a predetermined position by mounting the shaft-shaped jig on the cylinder head via a plurality of the cam carriers; replacing the shaft-shaped jig with the camshaft to be actually used with a plurality of the cam carriers being fastened to the cylinder head; and fastening the cam caps.
  • a positioning section is formed on the shaft-shaped jig in order to determine the position of the cam carrier in the axial direction of the shaft-shaped jig by the positioning section.
  • a circular section having a diameter as large as the diameter of the base circle of the cam section is formed in a position on the shaft-shaped jig corresponding to the cam section of the camshaft.
  • a sixth aspect of the present invention provides a method of assembling a camshaft for an internal combustion engine in which the camshaft is assembled to a cylinder head via a plurality of cam carriers and cam caps separately provided in each journal section and in which the camshaft also functions as a shaft-shaped jig for positioning the cam carrier, a journal section supported by a bearing section of the cam carrier and the cam cap is provided on the camshaft, a fitting section thicker than the journal section is provided in a part adjoining the journal section, a fitted section to be fitted by the fitting section is provided on the cam carrier and the cam cap in a part adjoining the bearing section, a clearance between the outer surface of the fitting section and the inner surface of the fitted section is smaller than a clearance between the outer surface of the journal section and the inner surface of the bearing section, the camshaft is mounted on the cylinder head via the cam carrier and the cam cap by fitting the camshaft fitting section to the cam carrier and the cam cap fitted section, and the slide of the camshaft is restricted by attaching a
  • a portion of the bearing section also functions as the fitted section, and the outer diameter of the fitting section is larger than the outer diameter of the journal section.
  • the outer diameter of the fitting section is larger than the outer diameter of the journal section, while the inner diameter of the fitted section is larger than the inner diameter of the bearing section.
  • the slide restricting member is a housing cap provided on an end of the camshaft.
  • a plurality of the cam carriers are disposed along the camshaft, a rocker shaft independent of each other is disposed on each of the cam carriers, and a rocker arm is disposed for pivotal motion on the rocker shaft.
  • An eleventh aspect of the present invention is an internal combustion engine, in which the camshaft is assembled to the cylinder head via the cam carrier and the cam cap by the method of assembling a camshaft for an internal combustion engine according to any one of the first to tenth aspects of the present invention.
  • the method of assembling a camshaft for an internal combustion engine includes the steps of: preparing the shaft-shaped jig the length of which is as long as the whole of a plurality of the cam carriers and, further, the shaft diameter of which in a fitting section in a part corresponding to the journal section is larger than the shaft diameter of the journal section; and positioning a plurality of the cam carriers in a predetermined position by mounting the shaft-shaped jig on the cylinder head via a plurality of the cam carriers.
  • the accuracy of the assembly positions of the parts for supporting the journal section can be ensured without using large-scale machining equipment necessary for avoiding deterioration of the contact condition in the journal section and increase of friction in the journal section, and further only a minimum number of components need to be replaced even if a problem is caused in the cam carrier or in other components.
  • the method of assembling a camshaft for an internal combustion engine includes the steps of: preparing the shaft-shaped jig the shaft diameter of which in a part corresponding to the journal section of the camshaft to be actually assembled is larger than the shaft diameter of the journal section, mounting the shaft-shaped jig on the cylinder head via the cam carrier and the cam cap; removing the cam cap with the cam carrier being fastened to the cylinder head; replacing the shaft-shaped jig with the camshaft to be actually used; and fastening the cam cap.
  • the accuracy of the assembly positions of the parts for supporting the journal section can be ensured without using large-scale machining equipment necessary for avoiding deterioration of the contact condition in the journal section and increase of friction in the journal section, and further only a minimum number of components need to be replaced even if a problem is caused in the carrier or in other components.
  • the positioning section is formed on the shaft-shaped jig in order to determine the position of the cam carrier in the axial direction of the shaft-shaped jig by the positioning section. Consequently, the position accuracy of the base position of the cam carrier and the position of the cam carrier in the axial direction are improved by the shaft-shaped jig. As a result, the widths of the cam section and the journal section can be reduced and the weight thereof can be reduced.
  • the circular section having a diameter as large as the diameter of the base circle of the cam section is formed in a position on the shaft-shaped jig corresponding to the cam section of the camshaft.
  • the camshaft also functions as the shaft-shaped jig for positioning the cam carrier. Consequently, it is not necessary to use a separate shaft-shaped jig, and an effect the same as that of the first aspect of the present invention can be obtained only by sliding the camshaft. As a result, the work efficiency can be improved.
  • the rocker shaft independent of each other is disposed on each of the cam carriers.
  • the camshaft in the internal combustion engine is assembled to the cylinder head via the cam carrier and the cam cap by the method of assembling a camshaft for an internal combustion engine according to any one of the first to tenth aspects of the present invention.
  • FIG. 1 and FIG. 2 show a first embodiment according to the present invention.
  • An engine 11 in FIG. 2 is an "internal combustion engine” of the present invention.
  • An intake camshaft 13 and an exhaust camshaft 14 are supported for rotation on a cylinder head 12 of the engine 11 via a plurality of sets of cam carriers 17 and cam caps 18 and one set of a cam carrier 21 and a cam cap 22.
  • a plurality of intake cam sections 13a and a plurality of exhaust cam sections 14a are formed on the intake camshaft 13 and the exhaust camshaft 14 respectively.
  • Journal sections 13b and 14b are formed between the adjoining intake cam sections 13a and between the adjoining exhaust cam sections 14a respectively.
  • one ends 13c and 14c of the camshafts 13 and 14 are power transmitting sections. The diameters of these ends are larger than those of any other part and supported for rotation by the cam carrier 21 and the cam cap 22.
  • Flange sections 13d and 13e and flange sections 14d and 14e for receiving thrust are formed on the both sides of these ends 13c and 14c respectively.
  • cam sensor rotors 13g and 14g for a WT are provided on the other ends.
  • a bearing recess 17a forming lower halves of bearing sections 15 and 16 of the journal sections 13b and 14b of the both camshafts 13 and 14 is formed on each of the cam carriers 17.
  • a rocker shaft 24 independent of each other is disposed on each of the cam carriers 17, and a rocker arm 25 is disposed for pivotal motion on the rocker shaft 24.
  • a bolt hole 17c into which a bolt 26 for installing the cam carrier to the cylinder head 12 is inserted is formed in each of the cam carriers 17 and, further in addition, a bolt hole 17d into which a bolt 27 for installing the cam cap 18 and the cam carrier 17 to the cylinder head 12 is inserted is formed.
  • a bearing recess 18a forming upper halves of the bearing sections 15 and 16 is formed on the cam cap 18, and a bolt hole 18b into which the bolt 27 is inserted is formed.
  • bearing recesses 21a and 22a for supporting the both camshafts 13 and 14 are formed on the cam carrier 21 and the cam cap 22.
  • a plurality of knock-pins 12a fitted in the cam carrier 21 on one end thereof and the cam carrier 17 on the other end thereof is formed on the upper surface of the cylinder head 12.
  • a shaft-shaped jig 30 shown in FIG. 1 is used to assemble these camshafts 13 and 14 and so forth.
  • a shaft diameter d1 of the shaft-shaped jig 30 in a fitting section 30a in a part corresponding to the journal sections 13b and 14b of the camshafts 13 and 14 to be actually assembled is larger than the shaft diameter of the journal sections 13b and 14b by a predetermined amount.
  • the predetermined amount is set to an amount by which a necessary amount of clearance is secured between the outer surfaces of the journal sections 13b and 14b of the camshafts 13 and 14 and the inner surfaces of the bearing sections 15 and 16 with differences in relevant components considered.
  • a pair of flange sections 30b is formed on the right end of the shaft-shaped jig 30 in FIG. 1 .
  • the cam cap 22 is fitted between a pair of the flange sections 30b in order that the movement in the direction of thrust may be restricted.
  • the cam carrier 21 on one end and the cam carrier 17 on the other end are positioned by the knock-pin 12a.
  • the bolt 26 is inserted into the bolt hole 17c, which is sufficiently large, on the cam carriers 21 and 17, and the cam carriers are loosely fixed onto the cylinder head 12 by the bolt 26.
  • the bolt 26 is inserted into the bolt hole 17c in the cam carrier 17, which is sufficiently large, between the cam carrier 21 on one end and the cam carrier 17 on the other end, and the bolt 26 is loosely screwed into the cylinder head 12 in a state in which a plurality of the cam carriers 17 can slightly move.
  • Two shaft-shaped jigs 30 are then placed on the bearing recesses 17a and 21a on the intake side and on the exhaust side of the cam carriers 17 and 21, respectively.
  • the cam cap 22 and the cam cap 18 are covered and fixed completely by the bolts 26 and 27.
  • the clearance at a time when the shaft-shaped jig 30 is used as described above is smaller than the clearance at a time when the actual camshafts 13 and 14 are used for the assembly between the outer surface of the fitting section 30a of the shaft-shaped jig 30 and the inner surface of the bearing sections 13 and 14.
  • the cam carrier 17 and the cam cap 18 can be attached with a little clearance or play with respect to the shaft-shaped jig 30.
  • a plurality of the cam carriers 17 can be accurately attached to the cylinder head 12 by completely fixing the cam carrier 17 and so forth in this state.
  • the rocker shaft 24 independent of each other is disposed on a multiplicity of the cam carriers 17. Therefore, after a multiplicity of the cam carriers 17 are attached to the cylinder head 12, it is not necessary to perform the machining process for improving the assembly state in order to improve the accuracy of the assembly position of the rocker shaft 24.
  • the cam cap 18 is fastened to the cylinder head 12. Unlike this embodiment, however, the cam cap 18 may be fastened to the cam carrier 17.
  • the cam cap 18 when the shaft-shaped jig 30 is disposed, the cam cap 18 is also attached. Unlike this embodiment, however, it is possible to attach solely the cam carrier 17 to the cylinder head 12 by the bolt 26 before centering by use of the shaft-shaped jig 30.
  • the cam cap 18 is not attached, and the cam carrier 17 is centered by the shaft-shaped jig 30. After this, the shaft-shaped jig 30 is removed and replaced with the camshafts 13 and 14. Then, the cam cap 18 is attached.
  • the knock-pin 12a is fitted into the both of the cam carriers 21 and 17 on the both ends. Unlike this embodiment, however, the knock-pin 12a may be fitted solely into the cam carrier 21 or 17 on one side in order that it is not necessary for the knock-pin to be fitted on the other side.
  • FIG. 3 to FIG. 5 show a second embodiment according to the present invention.
  • the second embodiment is different from the first embodiment in that a positioning section 40a and a circular section 40b are provided on a shaft-shaped jig 40.
  • a shaft diameter "d" of the shaft-shaped jig 40 in a fitting section 40c in a part corresponding to the journal sections 13b and 14b of the camshafts 13 and 14 to be actually assembled is larger than the shaft diameter of the journal sections 13b and 14b by a predetermined amount.
  • the predetermined amount is set to an amount by which a necessary amount of the clearance is secured between the outer surfaces of the journal sections 13b and 14 b of the camshafts 13 and 14 and the inner surfaces of the bearing sections 15 and 16 with differences in relevant components considered.
  • the positioning section 40a in the shape of a step adjoins the fitting section 40c.
  • the positioning section 40a is engaged with engaging sections 17e and 18c of the cam carrier 17 and the cam cap 18.
  • the circular section 40b of the shaft-shaped jig 40 is formed in a position corresponding to the cam sections 13a and 14a of the camshafts 13 and 14 and has a diameter the same as that of the base circle of the cam sections 13a and 14a.
  • a pair of flange sections 40d for receiving a thrust is formed on an end of the shaft-shaped jig 40.
  • the positioning section 40a is formed on the shaft-shaped jig 40 in order to determine the position of the cam carrier 17 in the axial direction of the shaft-shaped jig 40 by the positioning section 40a. Consequently, the position accuracy of the base position of the cam carrier 17 and the position of the cam carrier 17 in the axial direction are improved by the shaft-shaped jig 40. As a result, the widths of the cam section and the journal section can be reduced and the weight thereof can be reduced.
  • the circular section 40b having a diameter as large as the diameter of the base circle of the cam sections 13a and 14a is formed in a position on the shaft-shaped jig 40 corresponding to the cam sections 13a and 14a of the camshafts 13 and 14.
  • the clearance between the rocker arm 25 disposed on the cam carrier 17 and the base circle section of the cam sections 13a and 14a can be adjusted by the circular section 40b without turning the camshafts 13 and 14.
  • compositions and operations are the same as those in the first embodiment. Therefore, the description thereof is not repeated.
  • the cam cap 18 is also attached. Unlike this embodiment, however, it is possible to attach solely the cam carrier 17 to the cylinder head 12 before centering by use of the shaft-shaped jig 40.
  • FIG. 6 to FIG. 8 show a third embodiment according to the present invention.
  • the third embodiment is different from the first embodiment in that the intake camshaft 13 and the exhaust camshaft 14 also function as the shaft-shaped jig for positioning the cam carrier 17.
  • the method of assembling the intake camshaft 13 will be described with reference to the accompanying drawings.
  • the description of the method of assembling the exhaust camshaft 14 is omitted because the method of assembling the exhaust camshaft 14 is the same as that of the intake camshaft 13.
  • the bearing recesses 17a and 21a on the sides of the intake camshaft and the exhaust camshaft are integrally formed, the intake camshaft 13 and the exhaust camshaft 14 are simultaneously assembled to the cam carriers 17 and 21.
  • the bearing recesses 17a and 21a on the sides of the intake camshaft and the exhaust camshaft are separately formed, the intake camshaft and the exhaust camshaft are assembled not simultaneously but separately.
  • a fitting section 13f adjoining a journal section 13b is provided on the intake camshaft 13, while a fitted section 15a adjoining a bearing section 15 to be fitted with the fitting section 13f is provided on the cam carrier 17 and on the cam cap 18.
  • a part of the bearing section 15 also functions as the fitted section 15a.
  • an outer diameter "d2" of the fitting section 13f is larger than an outer diameter "d3" of the journal section 13b.
  • a clearance c1 between the outer surface of the fitting section 13f and the inner surface of the fitted section 15a is smaller than a clearance c2 between the outer surface of the journal section 13b and the inner surface of the bearing section 15.
  • the cam carriers 17, 21 are loosely fixed onto the cylinder head 12 by the bolt 26. Then the intake camshaft 13 is mounted, and the flange section 13e is made to be in contact with the side of the cam carrier 21. Each fitting section 13f of the intake camshaft 13 is fitted with the fitted section 15a of each cam carrier 17. On these components, the cam caps 18, 22 are covered and fixed completely by the bolts 26, 27 (refer to FIG. 7(a) and FIG. 8(a) ).
  • the camshaft 13 slides in the axial direction (to the left side in FIGs. 6 , 7 , and 8 ) by a predetermined amount in order to release the fitting section 13f from the fitted section 15a.
  • the cam cap 22 as a “slide restricting member" of the present invention is attached to the cam carrier 21. Since the cam cap 22 is fitted between a pair of the flange sections 13d, 13e of the camshaft 13, the slide of the camshaft 13 is restricted, and the intake camshaft 13 is held in the final position.
  • the side of the cam cap 22 and the flange sections 13d and 13e of the intake camshaft 13 receive a thrust when the intake camshaft 13 is turning.
  • compositions and operations are the same as those in the first embodiment. Therefore, the description thereof is not repeated.
  • FIG. 9 and FIG. 10 show a fourth embodiment according to the present invention.
  • the fourth embodiment is different from the third embodiment in that the structure of the fitting section 13f of the camshaft 13 and the structure of the fitted section 15a are different.
  • the outer diameter d2 of the fitting section 13f is larger than the outer diameter d3 of the journal section 13b, while the inner diameter d4 of the fitted section 15a is larger than the inner diameter d5 of the bearing section 15.
  • the camshaft 13 is slid in order to engage or disengage the fitting section 13f with or from the fitted section 15a. Consequently, in a manner similar with the third embodiment, the accuracy of mounting positions of the cam carrier 17 and other components can be improved.

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  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

La présente invention concerne un procédé d'installation de l'arbre à cames d'un moteur à combustion interne qui permet d'installer un arbre à cames dans une culasse au moyen de plusieurs ensembles porte-came et capuchon de came indépendants les uns des autres pour chaque tourillon. Un outil en forme de tige, conçu pour que sa partie de raccordement présente, dans la zone correspondant au tourillon, un diamètre de tige supérieur au diamètre de tige du tourillon le long de tous les porte-cames, est préparé. Il est monté sur la culasse via les porte-cames, ces derniers étant positionnés à des emplacements déterminés.

Claims (12)

  1. Procédé d'assemblage d'un arbre à cames (13 ; 14) sur une culasse (12) d'un moteur à combustion interne (1) par l'intermédiaire de plusieurs séries de supports de came (17, 21) et de couvercles de came (18, 22) prévus séparément dans chaque section de tourillon (13b ; 14b), le procédé comprenant les étapes qui consistent :
    à préparer un dispositif de serrage en forme d'arbre (30 ; 40) avec un diamètre d'arbre (d1), dans une section de montage (30a) dans une partie correspondant à la section de tourillon (13b ; 14b), qui est plus grand qu'un diamètre d'arbre (d1) de ladite section de tourillon (13b ; 14b) ; et
    à positionner plusieurs supports de came (17, 21) dans une position prédéterminée, en fixant le dispositif de serrage en forme d'arbre (30 ; 40) sur la culasse (12) par l'intermédiaire de plusieurs supports de came (17, 21).
  2. Procédé selon la revendication 1, étant précisé que le dispositif de serrage en forme d'arbre (30 ; 40) est préparé avec une longueur aussi longue que l'ensemble des supports de came (17, 21).
  3. Procédé selon la revendication 1 ou 2, comprenant les étapes qui consistent :
    à remplacer le montage en forme d'arbre (30 ; 40) par l'arbre à cames (13 ; 14) à utiliser réellement, avec plusieurs supports de came (17, 21) qui sont fixés à la culasse (12) ; et
    à fixer plusieurs couvercles de came (18, 22).
  4. Procédé selon la revendication 1 ou 2, comprenant les étapes qui consistent :
    à positionner plusieurs supports de came (17, 21) dans la position prédéterminée, en fixant le dispositif de serrage en forme d'arbre (30 ; 40) sur la culasse (12) par l'intermédiaire de plusieurs supports de came (17, 21) et couvercles de came (18, 22) ;
    à enlever plusieurs couvercles de came (18, 22), plusieurs supports de came (17, 21) étant fixés à la culasse (12) ;
    à remplacer le montage en forme d'arbre (30 ; 40) par l'arbre à cames (13 ; 14) à utiliser réellement ; et
    à fixer plusieurs couvercles de came (18, 22).
  5. Procédé selon l'une des revendications 1 à 4, étant précisé qu'une section de positionnement (40a) est formée sur le dispositif de serrage en forme d'arbre (40) afin de déterminer la position du support de came (17, 21) dans le sens axial du dispositif de serrage en forme d'arbre (40), grâce à la section de positionnement (40a).
  6. Procédé selon l'une des revendications 1 à 5, étant précisé qu'une section circulaire (40b) qui a un diamètre aussi grand que le diamètre d'un cercle de base d'une section de came (13a ; 14a) est formée à un endroit du dispositif de serrage en forme d'arbre (40) correspondant à la section de came (13a ; 14a) de l'arbre à cames (13 ; 14).
  7. Procédé d'assemblage d'un arbre à cames (13) sur une culasse (12) d'un moteur à combustion interne (1) par l'intermédiaire de plusieurs supports de came (17, 21) et couvercles de came (18, 22) prévus séparément dans chaque section de tourillon (13b), étant précisé que l'arbre à cames (13) fonctionne aussi comme dispositif de serrage en forme d'arbre (30 ; 40) pour positionner le support de came (17, 21), qu'une section de tourillon (13b) qui est supportée par une section de palier (15) du support de came (17, 21) et du couvercle de came (18) est prévue sur l'arbre à cames (13), et qu'une section de montage (13f) qui est plus épaisse que la section de tourillon (13b) est prévue dans une partie voisine de ladite section de tourillon (13b) ;
    qu'une section montée (15a), qui doit être montée grâce à la section de montage (13f), est prévue sur le support de came (17) et sur le couvercle de came (18) dans une partie voisine de la section de palier (15) ;
    qu'un jeu (c1) entre la surface extérieure de la section de montage (13f) et la surface intérieure de la section montée (15a) est plus petit qu'un jeu (c2) entre la surface extérieure de la section de tourillon (13b) et la surface intérieure de la section de palier (15) ;
    que l'arbre à cames (13) est fixé à la culasse (12) par l'intermédiaire du support de came (17) et du couvercle de came (21) grâce au montage de la section de montage d'arbre à cames (13f) sur le support de came (17) et la section montée de couvercle de came (15a) ; et
    que le coulissement de l'arbre à cames (13) est limité grâce à la fixation d'un élément limiteur de coulissement (22) pendant que l'arbre à cames (13) coulisse dans le sens axial suivant un degré prédéterminé, pour desserrer la section de montage (13f) et la dégager de la section montée (15a).
  8. Procédé selon la revendication 7, étant précisé qu'une partie de la section de palier (15) fonctionne aussi comme section montée (15a), et le diamètre extérieur (d2) de la section de montage (13f) est plus grand que le diamètre extérieur (d3) de la section de tourillon (13b).
  9. Procédé selon la revendication 7 ou 8, étant précisé que le diamètre extérieur (d2) de la section de montage (13f) est plus grand que le diamètre extérieur (d3) de la section de tourillon (13b), et que le diamètre intérieur (d4) de la section montée (15a) est plus grand que le diamètre intérieur (d5) de la section de palier (15).
  10. Procédé selon l'une des revendication 7 à 9, étant précisé que l'élément limiteur de coulissement (22) est constitué par un couvercle de carter prévu sur une extrémité de l'arbre à cames (13).
  11. Procédé selon l'une des revendications 1 à 10, étant précisé que plusieurs supports de came (17, 21) sont disposés le long de l'arbre à cames (13 ; 14), que des axes de culbuteur (24) indépendants les uns des autres sont disposés sur les supports de came (17) respectifs, et qu'un culbuteur (25) est disposé pour un mouvement pivotant sur l'axe de culbuteur (24).
  12. Moteur à combustion interne, étant précisé que l'arbre à cames (13 ; 14) est assemblé sur la culasse (12) par l'intermédiaire du support de came (17, 21) et du couvercle de came (18, 22) grâce au procédé d'assemblage d'un arbre à cames (13 ; 14) pour un moteur à combustion interne (1) selon l'une des revendications 1 à 11.
EP06757085A 2005-06-06 2006-06-06 Procédé d'installation d'arbre à cames de moteur à combustion interne et moteur à combustion interne Not-in-force EP1895111B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005165017 2005-06-06
PCT/JP2006/311347 WO2006132255A1 (fr) 2005-06-06 2006-06-06 Procédé d'installation d'arbre à cames de moteur à combustion interne et moteur à combustion interne

Publications (3)

Publication Number Publication Date
EP1895111A1 EP1895111A1 (fr) 2008-03-05
EP1895111A4 EP1895111A4 (fr) 2011-02-23
EP1895111B1 true EP1895111B1 (fr) 2012-04-18

Family

ID=36954718

Family Applications (2)

Application Number Title Priority Date Filing Date
EP06011510A Withdrawn EP1731720A2 (fr) 2005-06-06 2006-06-02 Méthode de montage d'un arbre à cames
EP06757085A Not-in-force EP1895111B1 (fr) 2005-06-06 2006-06-06 Procédé d'installation d'arbre à cames de moteur à combustion interne et moteur à combustion interne

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP06011510A Withdrawn EP1731720A2 (fr) 2005-06-06 2006-06-02 Méthode de montage d'un arbre à cames

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EP (2) EP1731720A2 (fr)
JP (1) JP4279337B2 (fr)
WO (1) WO2006132255A1 (fr)

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US9194261B2 (en) 2011-03-18 2015-11-24 Eaton Corporation Custom VVA rocker arms for left hand and right hand orientations
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USD750670S1 (en) 2013-02-22 2016-03-01 Eaton Corporation Rocker arm
EP2984325B1 (fr) * 2013-04-12 2019-06-05 Eaton Corporation Agencement de têtes de cylindres pour rampes de culbuteurs à actionnement de soupape variable
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Also Published As

Publication number Publication date
JPWO2006132255A1 (ja) 2009-01-08
EP1895111A1 (fr) 2008-03-05
WO2006132255A1 (fr) 2006-12-14
EP1895111A4 (fr) 2011-02-23
JP4279337B2 (ja) 2009-06-17
EP1731720A2 (fr) 2006-12-13

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