WO2006022065A1 - Dispositif de reglage du reglage de distribution - Google Patents

Dispositif de reglage du reglage de distribution Download PDF

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Publication number
WO2006022065A1
WO2006022065A1 PCT/JP2005/010503 JP2005010503W WO2006022065A1 WO 2006022065 A1 WO2006022065 A1 WO 2006022065A1 JP 2005010503 W JP2005010503 W JP 2005010503W WO 2006022065 A1 WO2006022065 A1 WO 2006022065A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotating body
hydraulic chamber
valve timing
adjusting device
timing adjusting
Prior art date
Application number
PCT/JP2005/010503
Other languages
English (en)
Japanese (ja)
Inventor
Koji Yudate
Akira Sakata
Hiroyuki Kinugawa
Original Assignee
Mitsubishi Denki Kabushiki Kaisha
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 Denki Kabushiki Kaisha filed Critical Mitsubishi Denki Kabushiki Kaisha
Priority to DE112005000050T priority Critical patent/DE112005000050T5/de
Priority to US10/575,724 priority patent/US20080245328A1/en
Publication of WO2006022065A1 publication Critical patent/WO2006022065A1/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
    • F01L1/34—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
    • 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
    • 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
    • F01L2001/34483—Phaser return springs

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 of an internal combustion engine such as an engine (hereinafter referred to as an engine).
  • a conventional valve timing adjusting device includes a housing having a bearing portion of a camshaft, a case having a plurality of protrusions on the inside and forming a hydraulic chamber between the cases, and a cover for closing the hydraulic chamber
  • a first rotating body that integrally fixes the three members and rotates together with the crankshaft, and a plurality of vanes that divide the hydraulic chamber into an advance hydraulic chamber and a retard hydraulic chamber, respectively, have a predetermined angle within the first rotary body. It consists of a second rotating body that can rotate only and is fixed integrally with an intake or exhaust camshaft.
  • the hydraulic chamber is configured such that oil pressure of an oil pump that supplies oil to the engine sliding portion is supplied and discharged, and the relative position of the second rotating body with respect to the first rotating body is controlled by the oil pressure. ing.
  • a compression spring or a torsion spring is often used as a biasing means for the second rotating body.
  • a compression spring for example, as shown in Patent Document 1, (1) a holder is inserted into a shoe of the first rotating body or a vane of the second rotating body, and the compression spring is inserted into a hole formed in the holder. Is installed. (2) A groove is formed in the first rotating body shear and the second rotating body vane, and a compression spring is installed in the groove. This groove is usually provided on the cover side in consideration of assembly.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2004-150278
  • the conventional valve timing adjusting device is configured as described above, depending on the configuration of (1) above, oil also flows between the holder and the cover. In addition to the area of the normal advance (retard) hydraulic chamber, the area of the holder is also added. If the cover is warped due to the expansion of the oil pressure receiving area and a gap is formed between the cover and the case, there is a problem that it causes the leakage of the oil.
  • the groove for installing the compression spring is usually provided on one side of the cover in consideration of assembly, so that the cover is hydraulically similar to the configuration of (1) above. When warped and a gap is formed between the cover and the case, there is a problem that it causes oil leakage. Further, when the compression spring (2) is used, there is a problem that the seats at both ends of the spring cannot be held in parallel during expansion and contraction, resulting in excessive deflection and impairing the spring function.
  • the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a valve timing adjusting device that can prevent oil leakage caused by the deflection of a cover and can operate smoothly.
  • a valve timing adjusting apparatus includes a housing having a bearing portion of a camshaft, a case having a plurality of protrusions on the inside and forming a hydraulic chamber between the shoes, and a cover for closing the hydraulic chamber And a plurality of vanes that divide the hydraulic chamber into an advance hydraulic chamber and a retard hydraulic chamber, respectively, and rotate relative to each other by a predetermined angle.
  • a movable and intake / exhaust camshaft and a fixed second rotating body are provided, and the relative position between the first rotating body and the second rotating body is adjusted.
  • the other end is housed in a groove or a hole provided in the vane of the second rotating body.
  • one end of the biasing means for adjusting the relative position between the first rotating body and the second rotating body is housed in the groove provided on the housing facing surface of the shoe, and the other end is rotated in the second rotation. Since the housing is housed in a groove or hole provided in the body vane, the housing has sufficient thickness and strength compared to the cover, and there is an effect that the housing does not bend due to hydraulic pressure to cause oil leakage.
  • the warping of the cover which does not increase the pressure receiving area of the cover, is reduced and oil leakage can be reduced.
  • the pressure receiving area of the cover is reduced, there is an effect that the use range of the cover such as a thin cover or a cover having a low strength is expanded.
  • FIG. 1 shows an internal configuration of a valve timing adjusting device according to Embodiment 1 of the present invention, and is an axial sectional view taken along line A_A in FIG.
  • FIG. 2 shows an internal configuration of the valve timing adjusting apparatus according to the first embodiment of the present invention, and is an axial sectional view taken along line BB in FIG.
  • FIG. 3 is a view taken along line III II I in FIG. 1, showing a state in which the vane rotor is at the most advanced position with respect to the first rotating body.
  • FIG. 4 is a view taken along the IV IV line of FIG. 1 showing a state where the vane rotor is at the most retarded position with respect to the first rotating body.
  • FIG. 5 is a view taken along line V_V in FIG. 1 showing a state in which the vane rotor is at the most advanced position with respect to the first rotating body.
  • Fig. 6 is a view taken along line VI-VI in Fig. 1 showing a state where the vane rotor is at the most retarded position with respect to the first rotating body.
  • FIG. 1 shows the internal configuration of the valve timing adjusting apparatus according to Embodiment 1 of the present invention.
  • FIG. 1 is an axial sectional view taken along line A_A in FIG. 3 to be described later, and FIG. 2 is viewed in B_B in FIG. It is an axial sectional view.
  • Fig. 3 is a radial cross-sectional view taken along line ⁇ _ ⁇ in Fig. 1 showing a state 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 of the first rotating body.
  • FIG. 4 is a radial cross-sectional view taken along line IV-IV in FIG. 1 showing a state where the second rotating body is at the most retarded position.
  • FIG. 5 is a radial cross-sectional view taken along line V-V in Fig. 1 showing a state in which the second rotating body is at the most advanced angle position with respect to the first rotating body.
  • FIG. 6 is a radial sectional view taken along line VI-VI in FIG. 1 showing a state where the second rotating body is at the most retarded position.
  • the valve timing adjusting device 1 includes a crankshaft (not shown) and a chain (not shown) of an engine (not shown).
  • a first rotating body 3 that rotates synchronously, and a second rotating body 7 that is disposed in the first rotating body 3 and is integrally fixed to an end surface of an intake or exhaust camshaft (hereinafter referred to as a camshaft) 5.
  • an assist spring (biasing member) 9 that adjusts the relative rotation between the second rotating body 7 and the first rotating body 3.
  • the first rotating body 3 has a sprocket 11a that receives the rotational driving force of a crankshaft (not shown) on the outside and a bearing portion (not shown) that is in sliding contact with the outer peripheral surface near the end face of the camshaft 5. ) On the inside and a plurality (three as shown in FIGS. 3 to 6) arranged adjacent to the housing 11 and projecting radially inwardly to form a plurality of spaces.
  • the case 13 having the shoe 13 a and the cover 15 that closes the inner space of the case 13 are configured in force.
  • the bolts 17 are fastened and fixed together by the three members.
  • the second rotating body 7 includes a boss portion 7a that is integrally fastened to the end surface of the camshaft 5 that rotates in a direction indicated by an arrow by a bolt 19 via a washer 18, and an outer peripheral force of the boss portion 7a.
  • the rotor has a plurality of vanes 7b protruding outward in the radial direction (hereinafter, the second rotating body 7 is referred to as a vane rotor 7).
  • Each vane 7b of the vane rotor 7 is hydraulically operated when the vane rotor 7 is rotated relative to the first rotating body 3 toward the advance side in a plurality of inner spaces formed by the cases 13a of the case 13.
  • a storage hole 29 penetrating in the radial direction of the device is formed in one case 13a of the case 13 in the valve timing adjusting device 1.
  • a substantially cylindrical lock pin 31 is disposed in the storage hole 29 so as to be slidable back and forth along the axial direction.
  • a bottomed hole 31a is formed in the bottom portion of the lock pin 31 located outside in the radial direction.
  • a stopper 33 is inserted into the storage hole 29 from the radially outer side and is fixed by a shaft 35.
  • the stagger 33 has a bottomed hole 33a on the radially inner side, and the bottom of the bottomed hole 33a has a space in the storage hole 29 located behind the lock pin 31 in the axial direction.
  • a back pressure discharge hole 37 that communicates with the atmosphere is formed.
  • a coil spring 39 that constantly biases the lock pin 31 radially inward is disposed between the bottomed hole 31a of the lock pin 31 and the bottomed hole 33a of the stopper 33.
  • the lock pin 31 is radially inward by the urging force of the coil spring 39.
  • An engagement hole 41 is formed to advance and engage in the direction.
  • An unlocking oil passage 42 is provided between the engagement hole 41 and the second oil passage 27.
  • the vane portion 7b of the vane rotor 7 constituting one side wall of each retarded hydraulic chamber 23 has a hole for accommodating the end portion 9a of the assist spring 9. 43 is provided.
  • a case 13a of the case 13 constituting the other side wall of each retarded hydraulic chamber 23 is provided on the surface facing the housing 11 on the other end 9b of the assist spring 9 as shown in FIGS.
  • a groove 44 is provided to store the container.
  • the oil in the advance hydraulic chamber 21 and the retard hydraulic chamber 23 of the valve timing adjusting device 1 passes through the first oil passage 25, the second oil passage 27 and the OCV (not shown).
  • the lock pin 31 is engaged with the engagement hole 41 by the urging force of the coil spring 39 and the relative rotation between the first rotating body 3 and the second rotating body 7 is performed.
  • the movement is restricted to the most advanced position (locked state).
  • the first rotating body 3 and the second rotating body 7 in the unlocked state are then transferred to the retarded hydraulic chamber 23.
  • the supplied retarded hydraulic pressure allows relative rotation to the retarded angle side by a predetermined rotation angle against the biasing force (returning force to the steady state) of the assist spring 9.
  • one end of the urging means for adjusting the relative position between the first rotating body and the vane rotor is housed in the groove provided on the housing facing surface of the shoe, Since the other end is housed in a groove or hole provided in the vane rotor vane, the housing has sufficient thickness and strength compared to the cover, and there is no oil leakage that does not warp the housing due to hydraulic pressure. .
  • the warping of the cover which does not increase the pressure receiving area of the cover, is reduced and oil leakage can be reduced.
  • the pressure receiving area of the cover does not increase, there is an effect that the use range of a thin cover or a cover with low strength is expanded.
  • the assist spring storage groove is formed on the housing facing surface of the vane in the same manner as the assist spring storage groove formed on the force shoe having the assist spring storage hole formed on the side surface of the vane.
  • the same effect as described above can be obtained, and the assembly of the assist spring is improved as compared with the case where the assist spring storage hole is provided.
  • the assist spring is set to have a maximum length at the most advanced angle position and to be linear, the deflection is reduced. And, since the gap is formed between the shear of the first rotating body and the vane of the second rotating body when the assist spring is compressed most at the most retarded angle position, the assist spring is prevented from being bent, There is room for smooth deflection. In addition, the oil passage can always be communicated by this gap.
  • the force S uses three assist springs.
  • the three assist springs 9 are set at equal loads and are arranged at substantially equal angular intervals. With this configuration, the sum of the moments caused by the vane rotor 7 falling can be brought close to zero, and the vane rotor 7 perpendicular to the axis can be prevented from falling.
  • the valve timing adjusting device controls the opening / closing timing of the intake valve or exhaust valve of the engine by preventing oil leakage caused by the deflection of the cover, smoothing the operation. Is suitable.

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

Abstract

Dispositif de réglage du réglage de distribution comprenant un premier corps tournant formé en fixant intégralement un boîtier ayant un support d’un arbre à cames, un boîtier ayant des patins saillants à l’intérieur pour définir des chambres de pression d’huile entre les patins et un couvercle pour fermer les chambres de pression d’huile qui est tourné avec un arbre de vilebrequin ; un deuxième corps tournant ayant des pales divisant chacune une chambre de pression d’huile en une chambre de pression d’huile avancée et une chambre de pression d’huile reculée, pouvant être tourné dans le premier corps tournant d’un angle prédéterminé et étant intégralement fixé à un arbre à cames pour l’aspiration des vapeurs d'échappement ; et des rainures recevant l’élément de pression dans ces surfaces de patin situées en face d’un boîtier et dans les pales, ou en variante, formé dans les surfaces des pales situées en face du boîtier.
PCT/JP2005/010503 2004-08-27 2005-06-08 Dispositif de reglage du reglage de distribution WO2006022065A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE112005000050T DE112005000050T5 (de) 2004-08-27 2005-06-08 Einrichtung zum Einstellen der Ventilsteuerzeit
US10/575,724 US20080245328A1 (en) 2004-08-27 2005-06-08 Valve Timing Adjusting Device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004248903A JP4327047B2 (ja) 2004-08-27 2004-08-27 バルブタイミング調整装置
JP2004-248903 2004-08-27

Publications (1)

Publication Number Publication Date
WO2006022065A1 true WO2006022065A1 (fr) 2006-03-02

Family

ID=35967286

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2005/010503 WO2006022065A1 (fr) 2004-08-27 2005-06-08 Dispositif de reglage du reglage de distribution

Country Status (4)

Country Link
US (1) US20080245328A1 (fr)
JP (1) JP4327047B2 (fr)
DE (1) DE112005000050T5 (fr)
WO (1) WO2006022065A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009215881A (ja) * 2006-07-05 2009-09-24 Mitsubishi Electric Corp バルブタイミング調整装置
US20120167846A1 (en) * 2009-09-25 2012-07-05 Hirofumi Hase Valve timing regulator
JP2012237196A (ja) * 2011-05-10 2012-12-06 Hitachi Automotive Systems Ltd 内燃機関のバルブタイミング制御装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6415706U (fr) * 1987-07-20 1989-01-26
JPH0250106U (fr) * 1988-09-30 1990-04-09
JP2001221019A (ja) * 1999-12-28 2001-08-17 Borgwarner Inc 可変カムシャフトタイミングシステム
JP2001248411A (ja) * 2000-03-03 2001-09-14 Mitsubishi Electric Corp バルブタイミング調整装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001055562A1 (fr) * 2000-01-25 2001-08-02 Mitsubishi Denki Kabushiki Kaisha Dispositif de reglage du calage de distribution

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6415706U (fr) * 1987-07-20 1989-01-26
JPH0250106U (fr) * 1988-09-30 1990-04-09
JP2001221019A (ja) * 1999-12-28 2001-08-17 Borgwarner Inc 可変カムシャフトタイミングシステム
JP2001248411A (ja) * 2000-03-03 2001-09-14 Mitsubishi Electric Corp バルブタイミング調整装置

Also Published As

Publication number Publication date
US20080245328A1 (en) 2008-10-09
JP4327047B2 (ja) 2009-09-09
DE112005000050T5 (de) 2006-08-03
JP2006063920A (ja) 2006-03-09

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