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WO2008004362A1 - Dispositif d'ajustement du réglage de distribution - Google Patents

Dispositif d'ajustement du réglage de distribution Download PDF

Info

Publication number
WO2008004362A1
WO2008004362A1 PCT/JP2007/057470 JP2007057470W WO2008004362A1 WO 2008004362 A1 WO2008004362 A1 WO 2008004362A1 JP 2007057470 W JP2007057470 W JP 2007057470W WO 2008004362 A1 WO2008004362 A1 WO 2008004362A1
Authority
WO
WIPO (PCT)
Prior art keywords
case
rotating body
cover
valve timing
housing
Prior art date
Application number
PCT/JP2007/057470
Other languages
English (en)
Japanese (ja)
Inventor
Koji Yudate
Akira Sakata
Hiroyuki Kinugawa
Original Assignee
Mitsubishi Electric Corporation
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 Mitsubishi Electric Corporation filed Critical Mitsubishi Electric Corporation
Publication of WO2008004362A1 publication Critical patent/WO2008004362A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
    • 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
    • F01L1/022—Chain drive
    • 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
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
    • F01L2001/3445—Details relating to the hydraulic means for changing the angular relationship
    • F01L2001/34453—Locking means between driving and driven members
    • F01L2001/34473—Lock movement perpendicular to camshaft axis
    • 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

Definitions

  • the present invention relates to a valve timing adjusting device that controls the opening / closing timing of an intake valve or an exhaust valve in an internal combustion engine such as an engine (hereinafter referred to as an engine).
  • the nove timing adjustment device is roughly composed of a first rotating body and a second rotating body.
  • the first rotating body includes a power transmission gear from the crankshaft, a housing having a shaft insertion hole in the center, a case having a plurality of protrusions on the inner side and forming a hydraulic chamber between the casings, The three covers that close the opening are fixed together and rotate together with the crankshaft.
  • the second rotating body has a plurality of vanes that divide the hydraulic chamber into an advance hydraulic chamber and a retard hydraulic chamber, respectively, and rotate by a predetermined angle within the assembled first rotary body. Is possible. It is fixed integrally with the intake or exhaust camshaft.
  • the hydraulic chamber described above is configured such that the hydraulic pressure of an oil pump that supplies oil to the engine sliding portion is supplied and discharged, and the relative position of the second rotary body with respect to the first rotary body is controlled by this hydraulic pressure. Speak.
  • the first rotating body in the conventional valve timing adjusting device is arranged so that the cylindrical case with both ends in the axial direction opened is sandwiched between the cover and the housing, and the cover, the case, and the housing are integrated by bolts.
  • a structure that is fastened and fixed to is generally used.
  • the outer peripheral edge of the cover may be warped, and a clearance may occur at the contact portion between the cover and the case, resulting in oil leakage.
  • valve timing adjusting device disclosed in Patent Document 1, for example.
  • the case and the cover are integrally formed by aluminum die casting or the like, thereby eliminating the occurrence of clearance between the cover and the case and preventing oil leakage.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 11 117717
  • FIG. 5 is a view showing an integrally molded part of a case and a cover formed by aluminum die casting or the like, and is a cross-sectional view along the axial direction of the camshaft.
  • a bowl-shaped part 100 in which a case and a cover are integrated is manufactured by molding by aluminum die casting or the like, it is necessary to form a taper part 100a for removing the mold product strength.
  • the taper portion 100a has to be completely removed by cutting, which increases the processing cost.
  • the cover and the case are inevitably made of the same material, which limits the degree of freedom in manufacturing.
  • the present invention has been made to solve the above-described problems, and obtains a valve timing adjusting device capable of reducing the number of parts that require cutting and improving the degree of manufacturing freedom. For the purpose.
  • a valve timing adjusting device has a gear for transmitting power from a crankshaft, a housing having a shaft through hole in the center, and a plurality of protrusions on the inner side.
  • a first rotating body having a case that forms a hydraulic chamber, a cover that closes an opening on one end side of the case, and a plurality of chambers that are positioned between the shunts to divide the hydraulic chamber into an advance hydraulic chamber and a retard hydraulic chamber
  • a second rotating body fixed to the intake or exhaust camshaft, and closing the openings on both sides of the case in which the second rotating body is assembled.
  • the case and the cover are integrally joined by sintering bonding.
  • the case and the cover are integrally formed by sintering bonding, there is an effect that oil leakage can be drastically reduced even if the valve timing adjusting device works.
  • the case and the cover can be formed separately, it is possible to greatly reduce the cutting site without the need to form a die-cut taper when integrally molded.
  • high dimensional accuracy of the sintered part can be maintained.
  • different types of materials can be joined, the range of materials that can be used for the cover can be expanded, and the degree of freedom in manufacturing can be improved.
  • FIG. 1 is a diagram showing an internal configuration of a valve timing adjusting device according to Embodiment 1 of the present invention.
  • FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1 of the valve timing adjusting device in which the second rotating body is at the most retarded position with respect to the first rotating body.
  • FIG. 3 is a cross-sectional view taken along the line AA in FIG. 1 of the valve timing adjusting device in which the second rotating body is at the most advanced angle position with respect to the first rotating body.
  • FIG. 4 is a diagram showing another configuration example of the valve timing adjusting apparatus according to the first embodiment.
  • FIG. 5 is a view showing an integrally formed part of a case and a cover formed by aluminum die casting or the like.
  • FIG. 1 is a diagram showing an internal configuration of a valve timing adjusting apparatus according to Embodiment 1 of the present invention, and shows an axial cross section.
  • FIG. 2 is a radial cross-sectional view taken along line AA in FIG. 1, and shows a state where the second rotating body is at the most retarded position with respect to the first rotating body.
  • FIG. 3 is a radial cross-sectional view taken along line AA in FIG. 1, showing a state in which the second rotating body is at the most advanced position with respect to the first rotating body.
  • the nove timing adjustment device is provided in a first rotating body 1 that rotates synchronously through a crankshaft of an engine (not shown) and a chain, and in the first rotating body 1, And a second rotating body 2 fixed integrally to an end face of an intake or exhaust camshaft (hereinafter referred to as a camshaft) (not shown).
  • a camshaft fixed integrally to an end face of an intake or exhaust camshaft (hereinafter referred to as a camshaft) (not shown).
  • the first rotating body 1 has a cylindrical shape with both ends in the axial direction opened, and a plurality of syu 3a projecting inward in the radial direction of the cylindrical shape is formed.
  • a case 3, a cover 4 that closes one open end of the case 3, and a housing 5 that closes the other end of the case 3 are provided.
  • the case 3 and the cover 4 are integrally fixed by sintering bonding as shown by a thick line in FIG. 1, and the housing 5 is fastened and fixed to the case 3 by bolts 6.
  • the second rotating body 2 has a boss portion 2a and a plurality of vanes 2b projecting outward in the radial direction of the outer peripheral portion of the boss portion 2a.
  • the camshaft is inserted into the center hole 5a of the housing 5 and the insertion hole la formed in the axial direction of the boss portion 2a communicating with the hole 5a, and is shown on the insertion side end face of the force shaft.
  • the boss 2a is fastened by a center bolt (not shown) inserted from the hole lb side through a non-contact washer. As a result, the second rotating body 2 and the camshaft are fixed together.
  • the vane 2b is an advance hydraulic pressure that is supplied with hydraulic pressure when rotating the second rotary body 2 relative to the first rotary body 1 in the advance side relative to the plurality of inner spaces partitioned by the shear 3a.
  • the chamber 7 is divided into a retarding hydraulic chamber 8 that receives hydraulic pressure when the second rotating body 2 is rotated relative to the first rotating body 1 in the retarding direction.
  • Each advance hydraulic chamber 7 communicates with an advance oil passage 9 for supplying and discharging hydraulic pressure, and each retard hydraulic chamber 8 with a retard oil passage 10 for supplying and discharging hydraulic pressure.
  • a seal 11 for preventing oil leakage from the advance hydraulic chamber 7 and the retard hydraulic chamber 8 is inserted into the outer peripheral surface that contacts the inner peripheral surface of the case 3, and the plate panel 12 is attached to the outer side in the radial direction. It is energized.
  • the end surface of the shoe 3a that contacts the outer peripheral surface of the vane 2b has a small clearance in order to prevent the oil flow between the advance hydraulic chamber 7 and the retard hydraulic chamber 8, but is separate. This may be dealt with by providing a sealing means.
  • a storage hole 13 penetrating from the inside to the outside in the radial direction is formed in any of the cases 3a of the case 3.
  • this storage hole 13 there are provided a substantially cylindrical lock pin 14 that can reciprocate, a compression panel 15 that always urges the lock pin 14 radially inward, and a stopper 16 that engages one end of the compression panel 15. ing.
  • the stopper 16 is received by the urging force of the compression panel 15.
  • the retaining pin 17 is integrated with the case 3 so as not to fall out from the receiving hole 13.
  • a communication hole 16a with the outside is provided at the center of the stopper 16.
  • the lock pin 14 is provided in the storage hole formed in the radial direction.
  • the storage hole formed in the vane 2b parallel to the axial direction of the first rotating body 1 has the inside of the storage hole. It is also possible to provide a lock pin that can be reciprocally slidable with the lock pin, and the lock pin is fitted into a fitting hole provided in this sliding direction so as to control the relative rotation of the rotor.
  • the case 3 and the cover 4 are separately formed, they are placed at a predetermined combination position, and heated in a sintering furnace at a temperature equal to or lower than the melting point of the case 3 and the cover 4 to be baked. At the same time as ligation, the solid phase is joined. In this sintered joining, the contact part of the members to be joined At this time, diffusion (diffusion of metal molecules) occurs at the atomic level, and a strong bond without defects can be realized.
  • case 3 and the cover 4 are firmly joined in this way, even if the outer peripheral end portion of the cover 4 is slightly warped, the joint portion force between the case 3 and the cover 4 does not leak oil. Also, since case 3 and cover 4 are created separately and force-sintered, it is not necessary to provide a die-cut taper on the inner wall of case 3, unlike when the case and cover are integrally molded with aluminum die casting or the like. The cutting part can be greatly reduced. In addition, since it can be joined in a solid phase, it is possible to maintain high dimensional accuracy compared to fusion welding.
  • the case 3 and the cover 4 are assembled together by sintered joining, oil leakage from the valve timing adjusting device can be drastically reduced. it can. Since the case 3 and the cover 4 can be made separately, it is possible to greatly reduce the cutting site without having to form a die-cut taper when integrally molded. In addition, since it can be joined in a solid phase, high dimensional accuracy of the sintered part can be maintained. Furthermore, since different types of materials can be joined, the range of materials that can be used for the cover is expanded, and the degree of manufacturing freedom can be improved. For example, only the cover 4 is not a high-strength material different from the case 3, and it is also possible to use a general-purpose iron or aluminum thin material.
  • the plate thickness is thin!
  • the cover 4 side force is also inserted.
  • the case 3 and the housing 5 may be fastened with the bolt 6 inserted from the side.
  • the bolt hole 6a formed in the shoe 3a must be a screw hole.
  • the cover 4 and the case 3 which are thinner than the nodling and the udging 5 are sintered.
  • the case 3 and the housing 5 may be sintered and joined.
  • the case 3 and the thin housing 5 can be made of different materials.
  • the plate is thin
  • the side member is not a high-strength material
  • a general-purpose iron or aluminum material is thin, It is also possible to use members.
  • the valve timing adjusting device can drastically reduce oil leakage by integrating the case and the cover together by sintering, so that the intake valve in an internal combustion engine such as an automobile engine can be greatly reduced. Or it is suitable for use in a valve timing adjustment device that controls the opening and closing timing of the exhaust valve.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

L'invention concerne un dispositif d'ajustement du réglage de distribution comprenant un premier corps rotatif (1) et un second corps rotatif (2). Le premier corps rotatif (1) comprend un logement (5) présentant un engrenage pour transmettre la puissance depuis un vilebrequin et un trou d'insertion d'arbre formé dans le centre du logement, un boîtier (3) présentant des patins en saillie (3a) à l'intérieur et formant des chambres de pression hydraulique entre les patins (3a), et un couvercle (4) pour fermer l'ouverture sur un côté d'extrémité du boîtier (3). Le second corps rotatif (2) comprend des aubes (2b) situées entre les patins (3a) pour diviser chaque chambre de pression hydraulique en une chambre d'avance de la distribution et une chambre de retardement de la distribution, lesdites aubes pouvant pivoter dans le premier corps de rotation (1) et étant fixées à un arbre d'admission ou d'échappement. Le couvercle (4) et le logement (5) qui sont agencés de manière à fermer les ouvertures des deux côtés du boîtier (3) sur lequel le second corps rotatif (2) est assemblé sont fixés de manière solidaire au boîtier (3). Le boîtier (3) et le logement (4) sont assemblés l'un à l'autre de manière solidaire par frittage.
PCT/JP2007/057470 2006-07-05 2007-04-03 Dispositif d'ajustement du réglage de distribution WO2008004362A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006185835A JP2009215881A (ja) 2006-07-05 2006-07-05 バルブタイミング調整装置
JP2006-185835 2006-07-05

Publications (1)

Publication Number Publication Date
WO2008004362A1 true WO2008004362A1 (fr) 2008-01-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/057470 WO2008004362A1 (fr) 2006-07-05 2007-04-03 Dispositif d'ajustement du réglage de distribution

Country Status (2)

Country Link
JP (1) JP2009215881A (fr)
WO (1) WO2008004362A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2418034A3 (fr) * 2010-08-11 2014-05-28 Schwäbische Hüttenwerke Automotive GmbH Composite de pignon fritté et son procédé de fabrication
DE102014209003A1 (de) 2013-05-14 2014-11-20 Denso Corporation Ventilzeitgebungssteuergerät

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6332208B2 (ja) 2015-09-11 2018-05-30 株式会社デンソー 複合構造体及びそれを備えたバルブタイミング調整装置
WO2021079396A1 (fr) * 2019-10-21 2021-04-29 三菱電機株式会社 Dispositif de réglage de distribution

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6415536A (en) * 1987-07-10 1989-01-19 Diesel Kiki Co Rotor for electromagnetic clutch and manufacture therefor
JPH07278605A (ja) * 1994-04-08 1995-10-24 Heiwa Sangyo Kk 粉末冶金による複雑形状品の製造方法
JPH10212507A (ja) * 1996-12-04 1998-08-11 Miba Sintermetall Ag 焼結成形体の製造方法
JP2005226160A (ja) * 2004-02-12 2005-08-25 Basf Ag 射出成形により粉末射出成形材料から製造された無機成形体を、射出成形以外の方法により製造された無機成形体と結合させる方法
JP2006063920A (ja) * 2004-08-27 2006-03-09 Mitsubishi Electric Corp バルブタイミング調整装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6415536A (en) * 1987-07-10 1989-01-19 Diesel Kiki Co Rotor for electromagnetic clutch and manufacture therefor
JPH07278605A (ja) * 1994-04-08 1995-10-24 Heiwa Sangyo Kk 粉末冶金による複雑形状品の製造方法
JPH10212507A (ja) * 1996-12-04 1998-08-11 Miba Sintermetall Ag 焼結成形体の製造方法
JP2005226160A (ja) * 2004-02-12 2005-08-25 Basf Ag 射出成形により粉末射出成形材料から製造された無機成形体を、射出成形以外の方法により製造された無機成形体と結合させる方法
JP2006063920A (ja) * 2004-08-27 2006-03-09 Mitsubishi Electric Corp バルブタイミング調整装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2418034A3 (fr) * 2010-08-11 2014-05-28 Schwäbische Hüttenwerke Automotive GmbH Composite de pignon fritté et son procédé de fabrication
DE102010034014B4 (de) * 2010-08-11 2015-06-25 Schwäbische Hüttenwerke Automotive GmbH Sinterverbund und Verfahren zu seiner Herstellung
DE102014209003A1 (de) 2013-05-14 2014-11-20 Denso Corporation Ventilzeitgebungssteuergerät
US9260985B2 (en) 2013-05-14 2016-02-16 Denso Corporation Valve timing control apparatus

Also Published As

Publication number Publication date
JP2009215881A (ja) 2009-09-24

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