EP1974127B1 - Structure support d'arbre à came de moteur à combustion interne et procédé d'assemblage correspondant - Google Patents

Structure support d'arbre à came de moteur à combustion interne et procédé d'assemblage correspondant Download PDF

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Publication number
EP1974127B1
EP1974127B1 EP07700498A EP07700498A EP1974127B1 EP 1974127 B1 EP1974127 B1 EP 1974127B1 EP 07700498 A EP07700498 A EP 07700498A EP 07700498 A EP07700498 A EP 07700498A EP 1974127 B1 EP1974127 B1 EP 1974127B1
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EP
European Patent Office
Prior art keywords
lash adjuster
internal combustion
combustion engine
support portion
cam carrier
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.)
Expired - Fee Related
Application number
EP07700498A
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German (de)
English (en)
Other versions
EP1974127A2 (fr
Inventor
Takanori Sasaki
Tetsushi Suzuki
Atsunori Kumagai
Shoichi Tateyama
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Toyota Motor Corp
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Toyota Motor Corp
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Publication date
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Publication of EP1974127A2 publication Critical patent/EP1974127A2/fr
Application granted granted Critical
Publication of EP1974127B1 publication Critical patent/EP1974127B1/fr
Expired - Fee Related legal-status Critical Current
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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
    • F01L1/20—Adjusting or compensating clearance
    • F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
    • F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
    • 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
    • F01L1/20—Adjusting or compensating clearance
    • F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
    • F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
    • F01L1/2405—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically by means of a hydraulic adjusting device located between the cylinder head and rocker arm

Definitions

  • the invention relates to a camshaft support structure of an internal combustion engine and an assembly method of that camshaft support structure. More particularly, the invention relates to a structure for supporting a camshaft in an internal combustion engine having a valve mechanism that includes a lash adjuster, and an assembly method of that structure.
  • JP-No. JP-A-2002-38909 describes a known internal combustion engine having a valve mechanism that includes a lash adjuster.
  • This valve mechanism also has a rocker arm which is a member for transmitting pressing force from a cam to an intake valve or an exhaust valve. One end of this rocker arm abuts against a valve stem of the intake valve or exhaust valve.
  • the other end of the rocker arm is supported by the lash adjuster. Also, the cam abuts against the rocker arm from the side opposite the lash adjuster and the valve stem. That is, the rocker arm is sandwiched between the lash adjuster and the valve stem which are positioned at both ends on one side of the rocker arm, and the cam which is positioned in substantially the center on the other side of the rocker arm.
  • the lash adjuster is a member provided to absorb the effects of these kinds of changes over time so that a predetermined pressing force is constantly applied to the rocker arm. That is, if the lash adjuster constantly applies a predetermined pressing force to the rocker arm, then the rocker arm and the cam can be kept in close contact regardless of changes over time such as wear and the like. Therefore, stable operation of the valve mechanism is able to be maintained according to the foregoing related internal combustion engine.
  • the support portion of the lash adjuster is typically formed as part of the cylinder head.
  • the support portion in the related internal combustion engine described above is formed integrated with the head cover.
  • This structure enables the structure of the cylinder head to be simplified, which is beneficial in many ways. For example, it improves productivity and also makes the internal combustion engine lighter. In this respect, the related structure is superior to the typical structure.
  • Assembly of the valve mechanism described above requires the following steps: 1) assembling the intake valve and exhaust valve and the like to the cylinder head, 2) assembling the lash adjuster in the support portion, 3) placing the rocker arm on the valve stem and lash adjuster, 4) assembling the camshaft from above the rocker arm, and 5) assembling the head cover to the cylinder head.
  • the support portion of the lash adjuster is fixed to the head cover. Therefore, after the lash adjuster has been assembled in the support portion, it is extremely difficult to place the rocker arm on the valve stem and lash adjuster. Therefore, although the related structure described above is beneficial in that it enables the cylinder head to be simplified, in reality the structure is difficult to assemble.
  • DE 100 41 975 A1 and DE 100 40 119 A1 both describe a cylinder head structure for an internal combustion motor having a cylinder head housing with at least one inlet channel and at least one outlet channel for each cylinder, each being provided with respective inlet/outlet valves.
  • the valve operating mechanism is contained within a housing fitted to the cylinder head, wherein support portions for respective lash adjusters of the valve operating mechanism are connected to the cylinder head.
  • camshaft support structure having the features of claim 1 and an assembly method of the same having the features of claim 10.
  • This invention provides a camshaft support structure of an internal combustion engine, and an assembly method thereof, which simplifies the structure of the cylinder head and which can easily be assembled in a production line.
  • the invention relates to a camshaft support structure of an internal combustion engine, which includes a cylinder head, a lower cam carrier that supports a camshaft from the cylinder head side, an upper cam carrier that supports the camshaft from the side opposite the lower cam carrier, and a lash adjuster support portion that supports a lash adjuster that supports a rocker arm that abuts against a cam.
  • the lash adjuster support portion is provided separately from and not directly connected to the cylinder head, and is connected to the lower cam carrier, wherein the lash adjuster support portion is formed separately therefrom.
  • valve mechanism can be assembled according to the following steps: 1) fitting an intake valve or an exhaust valve into the cylinder head, 2) placing the lash adjuster support portion and the lower cam carrier on the cylinder head, 3) placing the rocker arm on a valve stem of the intake valve or exhaust valve and the lash adjuster that has been assembled in the lash adjuster support portion, 4) placing the camshaft on the lower cam carrier so that the rocker arm and the cam overlap, and 5) assembling the upper cam carrier to the lower cam carrier, thereby completing the support structure of the camshaft.
  • a camshaft support structure is realised that can be easily assembled in a production line while simplifying the structure of the cylinder head.
  • the internal combustion engine can be provided with a plurality of the lower cam carriers, and the plurality of lower cam carriers are connected together by a frame to form a ladder frame type lower cam carrier.
  • the lash adjuster support portion can be connected to the ladder frame type lower cam carrier.
  • This ladder frame type lower cam carrier is highly rigid so that the lash adjuster support portion can be rigidity supported so the amount of wobble of the lash adjuster can be kept sufficiently small.
  • the lash adjuster support portion can be made of material that is lighter than aluminum.
  • the lash adjuster support portion can be made of material that is lighter than aluminum. Making the lash adjuster support portion out of lightweight material in this way enables the weight of the upper portion of the internal combustion engine to be reduced. Therefore, this simultaneously reduces the weight of the internal combustion engine and lowers its center of gravity.
  • the internal combustion engine can have a plurality of cylinders arranged inline, a plurality of the lash adjusters are provided corresponding to the plurality of cylinders, and the lash adjuster support portion extends so as to support all of the lash adjusters and is provided with a first oil passage for supplying oil to the lash adjusters.
  • a first oil passage for supplying oil to the lash adjusters is provided in the lash adjuster support portion. Therefore, the structure for supplying oil to the lash adjuster of each cylinder is simplified.
  • the internal combustion engine can be provided with an intake valve and an exhaust valve for each cylinder, and the lash adjuster support portion is arranged in between the intake valve and the exhaust valve.
  • the lash adjuster support portion can be arranged between the intake valve and the exhaust valve. Therefore, a single lash adjuster support portion can support both the lash adjusters for the exhaust valves and the lash adjusters for the intake valves.
  • This structure also makes it possible to make the distances from the first oil passage in the lash adjuster support portion to the lash adjusters on both the intake side and the exhaust side the same. Therefore, this simplifies the structure for supplying oil under the same conditions to the lash adjusters on the intake side and the exhaust side.
  • the camshaft support structure of an internal combustion engine also includes a second oil passage for supplying oil to a bearing portion formed by the lower cam carrier and the upper cam carrier, and the second oil passage is formed in a connecting body that includes the lash adjuster support portion, the lower cam carrier, and the upper cam carrier, and communicated with the first oil passage.
  • both the first oil passage for supplying oil to the lash adjusters and the second oil passage for supplying oil to the bearing portion can be formed in the connecting body that includes the lash adjuster support portion, the lower cam carrier, and the upper cam carrier. That is, all of the structures to supply the necessary oil in the support structure of the camshaft can be provided elsewhere than on the cylinder head. Accordingly, this can sufficiently simplify the structure of the cylinder head.
  • the invention further relates to an assembly method of a camshaft support structure of an internal combustion engine.
  • This assembly method includes the steps of fixing a lower cam carrier having a separate lash adjuster support portion onto a cylinder head into which an intake valve and an exhaust valve have been fitted, wherein the lash adjuster support portion is not directly connected to the cylinder head; setting a lash adjuster in the lash adjuster support portion; placing a rocker arm on the intake side and a rocker arm on the exhaust side; placing camshafts on the lower cam carrier so that the rocker arm on the intake side contacts an intake cam and the rocker arm on the exhaust side contacts an exhaust cam; and assembling an upper cam carrier to the lower cam carrier.
  • FIG. 1 is a sectional view of a structure according to an explanatory example of the invention.
  • the structure of the example has an internal combustion engine 10.
  • This internal combustion engine 10 is a multiple cylinder type engine having a plurality of cylinders arranged inline.
  • FIG. 1 shows the structure with the internal combustion engine 10 cut along a plane that passes through one of the cylinders.
  • the internal combustion engine 10 includes a cylinder head 12 which has an intake port 14 and an exhaust port 16.
  • a cylinder top inside surface 18 that partially defines a space in each of the cylinders is also formed on the cylinder head 12.
  • the intake port 14 and the exhaust port 16 both open to the cylinder top inside surface 18.
  • An intake valve 20 which opens and closes the cylinder top inside surface 18 is provided in the intake port 14.
  • an exhaust valve 22 which also opens and closes the cylinder top inside surface 18 is provided in the exhaust port 16.
  • the intake valve 20 has a valve stem 24 which is slidably retained by a valve guide 28, and the exhaust valve 22 has a valve stem 26 which is slidably retained by a valve guide 30.
  • Retainers 32 and 34 are fixed near the upper ends of the valve stems 24 and 26, and valve springs, not shown, are arranged around the valve stems 24 and 26. These valve springs urge the retainers 32 and 34 upward in the drawing, i.e., in the closing direction of the intake valve 20 and the exhaust valve 22.
  • a lash adjuster support portion 40 is provided between the valve stem 24 of the intake valve 20 and the valve stem 26 of the exhaust valve 22.
  • the lash adjuster support portion 40 is integrally formed with a ladder frame type lower cam carrier 42.
  • Upper cam carriers 44 are fixed to the ladder frame type lower cam carrier 42 from above by fastening bolts 45.
  • FIG. 2 is a perspective view of a connecting body 46 that includes the lash adjuster support portion 40, the ladder frame type lower cam carrier 42, and the upper cam carriers 44.
  • the cylinder head 12 of the internal combustion engine 10 is made of aluminum or cast iron.
  • the connecting body 46 is made of magnesium.
  • the ladder frame type lower cam carrier 42 has an outer frame portion 48 and a plurality of lower cam carriers 50.
  • the outer frame portion 48 is a portion that is fixed to the peripheral edge portion of the cylinder head 12.
  • the lower cam carriers 50 are members that are arranged between the cylinders of the internal combustion engine 10 and are connected together by the outer frame portion 48.
  • Upper bearing portions 54 that form pairs with the lower bearing portions 52 are provided on the upper cam carriers 44.
  • the intake camshaft and the exhaust camshaft are rotatably retained by the lower bearing portions 52 and the upper bearing portions 54.
  • Oil holes are formed in at least one of the lower bearing portions 52 and the upper bearing portions 54 for supplying oil thereto, i.e., to the journal portions of the camshafts retained between the lower bearing portions 52 and the upper bearing portions 54.
  • a second oil passage, also not shown, for supplying oil to these oil holes is formed in the connecting body 46, not the cylinder head 12.
  • the lash adjuster support portion 40 is provided extending in the lengthwise direction of the internal combustion engine 10.
  • a plurality of support portions 56 for each cylinder are formed in the lash adjuster support portion 40. More specifically, an equal number of support portions 56 as there are intake and exhaust valves 20 and 22 are formed on both the intake side and the exhaust side (only the support portions 56 on the exhaust side are shown in the FIG. 2 ).
  • the lash adjuster support portion 40 retains lash adjusters 60 in the support portions 56 on the intake side and the exhaust side.
  • the lash adjusters 60 have rocker arm support portions 62 on their upper ends. These lash adjusters 60 receive a supply of hydraulic pressure with which they urge the support portions 62 upward with a predetermined force.
  • a first oil passage for supplying that hydraulic pressure to the lash adjusters 60 is provided in the lash adjuster support portion 40.
  • This first oil passage is formed extending in the lengthwise direction through the center of the lash adjuster support portion 40 so the distance to the lash adjusters 60 on the intake side is the same as the distance to the lash adjusters 60 on the exhaust side.
  • Rocker arms 64 on the intake side are placed on the lash adjusters 60 on the intake side.
  • the other ends of the rocker arms 64 contact the upper ends of the intake valves 20.
  • the rocker arms 64 contact intake cams 66 positioned above them. That is, the rocker arms 64 on the intake side are sandwiched between the intake valves 20 and the lash adjusters 60 that are positioned below them, and the intake cams 66 that are positioned above them.
  • rocker arms 68 on the exhaust side are placed on the exhaust valves 22 and the lash adjusters 60 on the exhaust side.
  • the upper portions of the rocker arms 68 contact exhaust cams 70. That is, the rocker arms 68 on the exhaust side are sandwiched between the exhaust valves 22 and the lash adjusters 60 that are positioned below them, and the exhaust cams 70 that are positioned above them.
  • pressing force generated as the intake cams 66 rotate can be transmitted to the rocker arms 64 by the cam noses.
  • the support portions 62 of the lash adjusters 60 are essentially not displaced so when the rocker arms 64 are pressed down from the downward pressing force, they pivot about the rocker arm support portions 62 and lift the intake valves 20 so that they open.
  • the cam noses pass through the point of contact with the rocker arms 64, the lift amount of the intake valves 20 decreases and the valves close again.
  • the exhaust cams 70 rotate they cause the rocker arms 68 to pivot, thereby opening and closing the exhaust valves 22.
  • the pressing force of the lash adjusters 60 is exerted as force that presses the rocker arms 64 or the rocker arms 68 against the intake cams 66 or the exhaust cams 70. Therefore, according to the structure of this explanatory example , the upper ends of the intake valves 20 or the exhaust valves 22, the rocker arms 64 or the rocker arms 68, and the intake cams 66 or the exhaust cams 70 are able to be stably maintained in a state of close contact over an extended period of time without affecting the wear of the intake cams 66 and the exhaust cams 70 or the rocker arms 64 and 68 and the like.
  • the intake valves 20 and the exhaust valves 22 operate appropriately in sync with the rotation of the intake cams 66 and the exhaust cams 70 as long as they are kept in the close contact state described above. Therefore, according to the structure of this explanatory example, the intake valves 20 and the exhaust valves 22 can be appropriately operated stably for an extended period of time regardless of wear of the rocker arms 64 and 68 and the like.
  • the camshaft structure of this explanatery example has as third oil passage, not shown, for spraying a shower of oil on the sliding surfaces of the intake cams 66 and the rocker arms 64, as well as on the sliding surfaces of the exhaust cams 70 and the rocker arms 68.
  • This third oil passage is provided in the connecting body 46, not in the cylinder head 12.
  • camshaft support structure according to this explanatory example can easily be assembled by following the steps described below.
  • Step 1 Fit the intake valves 20 and the exhaust valves 22, together with their associated elements (such as valve springs and the like), into the cylinder head 12.
  • Step 2) Fix the ladder frame type lower cam carrier 42 having the lash adjuster support portion 40 onto the cylinder head 12.
  • Step 3 Fit the lash adjusters 60 into the support portions 56 through the gaps in the ladder frame type lower cam carrier 42.
  • Step 4) Place the rocker arms 64 on the upper ends of the intake valves 20 and the lash adjusters 60 on the intake side. Similarly, place the rocker arms 68 on the upper ends of the exhaust valves 22 and the lash adjusters 60 on the exhaust side.
  • Step 5) Place the intake camshaft on the lower cam carriers 50 so that the rocker arms 64 contact the intake cams 66.
  • Step 6 Connect the upper cam carriers 44 to the lower cam carriers 50 so that the intake camshaft and the exhaust camshaft are properly retained.
  • the head cover is then attached and the like, thus completing assembly of the internal combustion engine 10.
  • the camshaft support structure of this explanatory example is able to easily be assembled in a production line without any trouble.
  • the camshaft support structure according to this explanatory example is such that the lash adjuster support portion 40 is provided separate from the cylinder head 12. Also, all of the necessary hydraulic pressure passages around the camshafts are formed not in the cylinder head 12 but in the connecting body 46 which is arranged above the cylinder head 12. Therefore, the camshaft support structure according to this explanatory example simplifies the structure of the cylinder head 12.
  • the lash adjuster support portion 40 can be manufactured by a die-cast manufacturing method. More specifically, a manufactured article in which the lash adjuster support portion 40 and the ladder frame type lower cam carrier 42 are integrally provided can be manufactured by a die-cast manufacturing method. Therefore, even if the lash adjuster support portion 40 is separate from the cylinder head 12, it will not adversely affect the productivity of the internal combustion engine 10 much.
  • the cylinder head 12 is manufactured by a kind of casting which is represented by gravity casting.
  • productivity increases the simpler the structure of the article to be manufactured.
  • the cylinder head 12 can be manufactured with high productivity.
  • the support structure according to this explanatory example increases the overall productivity of the internal combustion engine 10.
  • the support structure according to this explanatory example promotes both weight and size reductions of the internal combustion engine 10.
  • the support structure according to this explanatory example also promotes a cost reduction of the internal combustion engine 10.
  • the lash adjuster support portion 40 and the ladder frame lower cam carrier 42 are integrally formed of magnesium.
  • Magnesium is lighter than aluminum or cast iron of which the cylinder head 12 is made. Therefore, this structure enables the internal combustion engine 10 to be lighter and have a lower center of gravity at the same time.
  • this support structure of this explanatory example With the support structure of this explanatory example the plurality of lower cam carriers 50 arranged in between the cylinders are connected by the outer frame portion 48 as well as by the lash adjuster support portion 40, which increases the rigidity of the lower cam carriers 50. Because of this, this support structure of the explanatory example enables increases the rigidity of the lower cam carriers 50 to be increased while having them be made of magnesium.
  • the first oil passage is provided in the lash adjuster support portion 40 so that the distance to the lash adjusters 60 on the intake side and the distance to the lash adjusters 60 on the exhaust side are the same.
  • This structure enables oil to be supplied to the lash adjusters 60 on both the intake side and the exhaust side always under the same conditions. Therefore, the support structure of this explanatory, example can always get the best performance out of both lash adjusters 60.
  • the support structure of this explanatory example requires that oil be supplied around the camshaft to the lash adjusters 60, the bearing portions, and the sliding surfaces of the cams and the rocker arms 64 and 68.
  • the first oil passage, the second oil passage, and the third oil passage which are necessary for supplying oil to these parts are formed in the connecting body 46 that includes the lash adjuster support portion 40, as described above, and are all connected to one another. Therefore, when oil is supplied to one of the passages, it can be supplied to all of the desired locations. Therefore, with the support structure of this explanatory example, the mechanism for supplying oil to the desired locations can be realized by an extremely simple structure. With respect to these points as well, the support structure of this explanatory example is able to improve productivity and reduce costs.
  • the lash adjuster support portion 40 is integrally formed with the lower cam carriers 50.
  • the lash adjuster support portion 40 is formed as a member that is separate from the lower cam carriers 50, and then connected to the lower cam carriers 50 by fastening bolts or the like.
  • the lower cam carriers 50 may be made of aluminum or cast iron, and only the lash adjuster support portion 40 made of magnesium.
  • the lash adjuster support portion 40, the ladder frame type lower cam carriers 42, and the upper cam carriers 44 are made of magnesium, but they may also be made of resin composite which is lighter than aluminum or cast iron. Moreover, when reducing the weight and lowering the center of gravity of the internal combustion engine 10 are not extremely important, the lash adjuster support portion 40 and the like may be made of aluminum or cast iron.
  • each lower cam carrier 50 arranged between cylinders may be a separate member independent from the others, i.e., not connected by the outer frame portion 48.
  • the upper cam carriers 44 are formed as independent members and are individually connected to the lower cam carriers 50, but the upper cam carriers 44 may also be integrally formed with the head cover of the internal combustion engine 10.
  • the lash adjuster support portion 40 is connected to the lower cam carriers 50, but, as long as the lash adjuster support portion 40 is provided separately from the cylinder head 12, it may ultimately be fixed to the cylinder head 12. In this case, however, it is necessary to provide an oil passage in the cylinder head 12 for supplying oil to the first oil passage in the lash adjuster support portion 40 which makes the structure of the cylinder head 12 slightly more complex than the structure of the explanatory example.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

Un soutien de régulateur de serrage (40) est intégré à un support de came inférieur (50), lequel est fixé sur une tête de cylindre (12) équipée d'une vanne d'admission (20) et d'une vanne d'échappement (22). Une fois ledit régulateur (60) logé dans son soutien (40), on place un culbuteur (64) sur le côté admission et un culbuteur (68) sur le côté échappement. On place ensuite des arbres à came sur le support de came inférieur (50) de sorte que le culbuteur (64) soit en contact avec une came d'admission (66) et que le culbuteur (68) soit en contact avec une came d'échappement (70). Un support de came supérieur (44) est ensuite assemblé avec le support de came inférieur (50), ce qui complète la structure support d'arbre à came.

Claims (10)

  1. Structure de support d'arbre à cames d'un moteur à combustion interne (10), qui comporte:
    une culasse (12),
    un support (50) de cames inférieur qui soutient un arbre à cames du côté de la culasse,
    un support (44) de cames supérieur qui soutient l'arbre à cames du côté opposé au support (50) de cames inférieur, et
    une partie de support (40) de régleur de jeu qui soutient un régleur de jeu (60) qui soutient un culbuteur (64, 68) qui vient en butée contre une came (66, 70), où la partie de support (40) de régleur de jeu est pourvue séparément de la culasse (12) et n'est pas directement reliée à la culasse (12),
    caractérisée en ce que
    la partie de support (40) de régleur de jeu est formée séparément du support (50) de cames inférieur et est reliée à celui-ci.
  2. Structure de support d'arbre à cames d'un moteur à combustion interne (10), dans laquelle
    le moteur à combustion interne (10) est doté d'une pluralité de supports (50) de cames inférieurs, et
    la pluralité de supports (50) de cames inférieurs sont reliés entre eux par un châssis afin de former un support (42) de cames inférieur de type châssis en échelle.
  3. Structure de support d'arbre à cames d'un moteur à combustion interne (10) selon l'une des revendications 1 ou 2, dans laquelle la partie de support (40) de régleur de jeu est réalisée à partir d'un matériau qui est plus léger que l'aluminium.
  4. Structure de support d'arbre à cames d'un moteur à combustion interne (10) selon la revendication 3, dans laquelle la partie de support (40) de régleur de jeu est réalisée à partir de l'un d'un composite de résine et de magnésium.
  5. Structure de support d'arbre à cames d'un moteur à combustion interne (10) selon l'une quelconque des revendications 1 à 4, dans laquelle
    le moteur à combustion interne (10) a une pluralité de cylindres agencés en ligne,
    une pluralité de régleurs de jeu (60) sont pourvus correspondants à la pluralité de cylindres, et
    la partie de support (40) de régleur de jeu s'étend de sorte à soutenir l'ensemble des régleurs de jeu (60) et est dotée d'un premier passage d'huile pour fournir de l'huile aux régleurs de jeu (60).
  6. Structure de support d'arbre à cames d'un moteur à combustion interne (10) selon la revendication 5, dans laquelle
    le moteur à combustion interne (10) est doté d'une soupape d'admission (20) et d'une soupape d'échappement (22) pour chaque cylindre, et
    la partie de support (40) de régleur de jeu est agencée entre la soupape d'admission (20) et la soupape d'échappement (22).
  7. Structure de support d'arbre à cames d'un moteur à combustion interne (10) selon la revendication 6, dans laquelle le premier passage d'huile est formé de sorte que la distance d'une position prédéterminée dans le premier passage d'huile au régleur de jeu (60) sur le côté d'admission d'un cylindre donné est la même que la distance de la position prédéterminée dans le premier passage d'huile au régleur de jeu (60) sur le côté d'échappement du cylindre donné.
  8. Structure de support d'arbre à cames d'un moteur à combustion interne (10) selon l'une quelconque des revendications 5 à 7, comprenant en outre:
    un deuxième passage d'huile pour fournir de l'huile à une partie de palier formée par le support (50) de cames inférieurs et le support (44) de cames supérieur,
    où le deuxième passage d'huile est formé dans un corps (46) de raccordement qui comporte la partie de support (40) de régleur de jeu, le support (50) de cames inférieur, et le support (44) de cames supérieur, et communique avec le premier passage d'huile.
  9. Structure de support d'arbre à cames d'un moteur à combustion interne (10) selon l'une quelconque des revendications 5 à 8, comprenant en outre:
    un troisième passage d'huile pour fournir de l'huile à des surfaces de glissement de la came (66, 70) et au culbuteur (64, 68),
    où le troisième passage d'huile est formé dans un corps (46) de raccordement qui comporte la partie de support (40) de régleur de jeu, le support (50) de cames inférieur, et le support (44) de cames supérieur, et communique avec le premier passage d'huile.
  10. Procédé d'assemblage d'une structure de support d'arbre à cames d'un moteur à combustion interne (10), comprenant les étapes qui consistent à:
    fixer un support (50) de cames inférieur ayant une partie de support (40) de régleur de jeu séparée reliée à celui-ci sur une culasse (12) dans laquelle une soupape d'admission (20) et une soupape d'échappement (22) ont été ajustées, où la partie de support (40) de régleur de jeu n'est pas directement reliée à la culasse (12);
    établir un régleur de jeu (60) dans la partie de support (40) de régleur de jeu;
    placer un culbuteur (64, 68) sur le côté d'admission et un culbuteur (64, 68) sur le côté d'échappement;
    placer des arbres à cames sur le support (50) de cames inférieur de sorte que le culbuteur (64, 68) sur le côté d'admission se mette en contact avec une came d'admission (66) et de sorte que le culbuteur (64, 68) sur le côté d'échappement se mette en contact avec une came d'échappement (70); et
    assembler un support (44) de cames supérieur au support (50) de cames inférieur.
EP07700498A 2006-01-19 2007-01-18 Structure support d'arbre à came de moteur à combustion interne et procédé d'assemblage correspondant Expired - Fee Related EP1974127B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006010948A JP4144625B2 (ja) 2006-01-19 2006-01-19 内燃機関のカムシャフト支持構造
PCT/IB2007/000126 WO2007083224A2 (fr) 2006-01-19 2007-01-18 Structure support d'arbre à came de moteur à combustion interne et procédé d'assemblage correspondant

Publications (2)

Publication Number Publication Date
EP1974127A2 EP1974127A2 (fr) 2008-10-01
EP1974127B1 true EP1974127B1 (fr) 2010-10-27

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US (1) US20090000585A1 (fr)
EP (1) EP1974127B1 (fr)
JP (1) JP4144625B2 (fr)
KR (1) KR101051244B1 (fr)
CN (1) CN101371010B (fr)
DE (1) DE602007010094D1 (fr)
RU (1) RU2393360C2 (fr)
WO (1) WO2007083224A2 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007063254A1 (de) * 2007-12-31 2009-07-02 Mahle International Gmbh Zylinderkopfhaube
JP5240018B2 (ja) * 2009-04-02 2013-07-17 トヨタ自動車株式会社 内燃機関のラッシュアジャスタ支持構造
JP2011140904A (ja) * 2010-01-07 2011-07-21 Otics Corp 車両用エンジン
US8820277B2 (en) * 2011-03-08 2014-09-02 GM Global Technology Operations LLC Engine assembly including cylinder head oil gallery
CN103874830A (zh) * 2011-10-11 2014-06-18 丰田自动车株式会社 凸轮轴支承结构
AU2013386647B2 (en) * 2013-04-18 2016-10-20 Anhui Jianghuai Automobile Group Corp., Ltd. Cylinder head, method for manufacturing same, and engine
KR101611085B1 (ko) 2014-10-16 2016-04-11 현대자동차주식회사 차량용 캠캐리어 모듈
US9458744B2 (en) * 2014-10-29 2016-10-04 Ford Global Technologies, Llc Engine with external cam lubrication
JP6298488B2 (ja) * 2016-03-30 2018-03-20 本田技研工業株式会社 鞍乗り型車両の内燃機関
JP6939485B2 (ja) * 2017-12-04 2021-09-22 トヨタ自動車株式会社 シリンダヘッド
CN108894848B (zh) * 2018-09-14 2024-01-05 金浪科技有限公司 一种汽油发动机
JP7135817B2 (ja) * 2018-12-11 2022-09-13 トヨタ自動車株式会社 シリンダヘッド
CN115405394A (zh) * 2022-08-16 2022-11-29 一汽解放汽车有限公司 气门驱动机构、发动机及车辆

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61261612A (ja) * 1985-05-14 1986-11-19 Honda Motor Co Ltd 内燃機関の油圧タペツト付動弁機構における給油装置
DE3641129C1 (de) * 1986-12-02 1987-07-30 Daimler Benz Ag Vorrichtung zur Lagerung von zwei Nockenwellen im Zylinderkopf einer mehrzylindrigen Reihenbrennkraftmaschine
JPS63176612A (ja) 1987-01-14 1988-07-20 Daihatsu Motor Co Ltd Ｄｏｈｃ型内燃機関用シリンダヘツドにおける給油装置
CA1330026C (fr) * 1987-12-28 1994-06-07 Tomonori Niizato Systeme de distribution de lubrifiant pour moteur polycylindre a combustion interne de type double arbre a cames en tete
JPH087043Y2 (ja) * 1988-10-29 1996-02-28 富士重工業株式会社 ダブルオーバヘッドカム型動弁機構の潤滑装置
JPH0717765Y2 (ja) * 1988-10-29 1995-04-26 富士重工業株式会社 油圧式ハイドロリックラッシュアジャスタ装置
US5161495A (en) * 1989-07-14 1992-11-10 Yamaha Hatsudoki Kabushiki Kaisha Lubrication arrangement for engine
DE4324791A1 (de) * 1993-07-23 1995-01-26 Porsche Ag Zylinderkopfanordnung einer Brennkraftmaschine
JP3319336B2 (ja) * 1997-05-01 2002-08-26 三菱自動車工業株式会社 エンジンのオイル通路構造
IT1302601B1 (it) * 1998-10-05 2000-09-29 Eaton Automotive Spa Bilanciere dotato di elemento idraulico nel fulcro per un treno dicomando di valvole.
AT3758U1 (de) * 1999-08-30 2000-07-25 Avl List Gmbh Zylinderkopfstruktur für eine brennkraftmaschine
FR2807467B1 (fr) * 2000-04-05 2002-06-07 Peugeot Citroen Automobiles Sa Moteur a combustion interne pour vehicule automobile
DE10040119A1 (de) * 2000-08-17 2002-02-28 Daimler Chrysler Ag Zylinderkopf für eine Brennkraftmaschine
JP3777301B2 (ja) * 2000-12-04 2006-05-24 本田技研工業株式会社 車両用多気筒エンジン
KR20020094565A (ko) * 2001-06-12 2002-12-18 현대자동차주식회사 엔진의 캠샤프트 고정장치
DE10250303A1 (de) * 2002-10-29 2004-05-19 Bayerische Motoren Werke Ag Zylinderkopf einer Brennkraftmaschine mit Nockenwellenlagerleiste
JP3788437B2 (ja) * 2003-03-20 2006-06-21 日産自動車株式会社 内燃機関及びその一体型カムブラケット
JP4171911B2 (ja) * 2004-03-18 2008-10-29 トヨタ自動車株式会社 内燃機関のシリンダヘッドおよびその製造方法
DE102005023581A1 (de) * 2005-05-18 2006-11-23 Fev Motorentechnik Gmbh Verbrennungskraftmaschine mit reduzierter Zylinderkopfhöhe
JP4365373B2 (ja) * 2006-01-19 2009-11-18 トヨタ自動車株式会社 内燃機関のカムシャフト支持構造

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Publication number Publication date
WO2007083224A2 (fr) 2007-07-26
US20090000585A1 (en) 2009-01-01
JP4144625B2 (ja) 2008-09-03
EP1974127A2 (fr) 2008-10-01
RU2393360C2 (ru) 2010-06-27
CN101371010B (zh) 2012-05-23
JP2007192105A (ja) 2007-08-02
RU2008129673A (ru) 2010-01-27
KR101051244B1 (ko) 2011-07-21
DE602007010094D1 (de) 2010-12-09
WO2007083224A3 (fr) 2007-11-01
CN101371010A (zh) 2009-02-18
KR20080079686A (ko) 2008-09-01

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