WO2005068793A1 - Mecanisme d'actionnement de soupape variable pour moteur a combustion interne - Google Patents

Mecanisme d'actionnement de soupape variable pour moteur a combustion interne Download PDF

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Publication number
WO2005068793A1
WO2005068793A1 PCT/JP2005/000949 JP2005000949W WO2005068793A1 WO 2005068793 A1 WO2005068793 A1 WO 2005068793A1 JP 2005000949 W JP2005000949 W JP 2005000949W WO 2005068793 A1 WO2005068793 A1 WO 2005068793A1
Authority
WO
WIPO (PCT)
Prior art keywords
control shaft
valve actuation
engaging portion
expansion coefficient
thermal expansion
Prior art date
Application number
PCT/JP2005/000949
Other languages
English (en)
Inventor
Yoshiaki Miyazato
Yuji Yoshihara
Fuminori Hosoda
Takahide Koshimizu
Koichi Shimizu
Manabu Tateno
Masaaki Tani
Original Assignee
Toyota Jidosha 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
Priority claimed from JP2004226145A external-priority patent/JP2006009774A/ja
Application filed by Toyota Jidosha Kabushiki Kaisha filed Critical Toyota Jidosha Kabushiki Kaisha
Priority to US10/586,257 priority Critical patent/US20070163523A1/en
Priority to DE602005003785T priority patent/DE602005003785T2/de
Priority to EP05704093A priority patent/EP1711693B1/fr
Publication of WO2005068793A1 publication Critical patent/WO2005068793A1/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
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • 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
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L13/0063—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque by modification of cam contact point by displacing an intermediate lever or wedge-shaped intermediate element, e.g. Tourtelot
    • 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
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/18—Rocking arms or levers
    • F01L1/185—Overhead end-pivot rocking arms
    • 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
    • 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
    • F01L1/26—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder
    • F01L1/267—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder with means for varying the timing or the lift of the valves
    • 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
    • F01L2301/00—Using particular materials
    • 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
    • F01L2305/00—Valve arrangements comprising rollers
    • 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
    • F01L2820/00—Details on specific features characterising valve gear arrangements
    • F01L2820/03—Auxiliary actuators
    • F01L2820/032—Electric motors

Definitions

  • variable valve actuation mechanism for an internal combustion engine that performs a highly accurate valve actuation control, while maintaining the strength of a control shaft.
  • the engaging portion be engaged with the valve actuation controller by means of a control pin, and that the engaging portion be provided about the control pin in the control shaft to support the control pin.
  • An axial through hole 128f is formed in the slider gear 128.
  • a circumferential groove 128g is formed in the inner circumferential surface of the through hole 128f at position corresponding to the input helical spline 128a.
  • a pin insertion hole 128h is formed in the circumferential groove 128g. The pin insertion hole 128h extends radially and communicates with the outside.
  • the four intervening drive mechanisms 120 apply an axial force to the control shaft 132 toward the urging mechanism 102 through the control pins 132a by means of the inner spline mechanism.
  • the force of the spring 102a is slightly greater than the axial force generated by the four intervening drive mechanisms 120.
  • a resultant linear expansion coefficient d3 at a position corresponding to the third control pin 232a-3 from the slide actuator 100 changes as shown in Fig. 17.
  • the length of the coupler shaft 232d-3 is represented by x3, and the length of the engaging portion 232c-3 is represented by y3.
  • the length from the end face of the engaging portion 232c-3 contacting the coupler shaft 232d-3 to the control pin 232a-3 is represented by y3/2.
  • the equation RX:RY xl + x2 + x3:(yl + y2 + y3/2) is satisfied.
  • x3 [(yl + y2/2 + M) (c- a) - (xl +x2) (b - c)]/(b - a) (13)
  • the thermal expansion coefficient of the entire control shaft 232 is substantially the same as the thermal expansion coefficient of the cylinder head 8. Therefore, even if the ambient temperature changes, the positions of the engaging portions 232c-l to 232c ⁇ 4 relative to the cylinder head 8 are not displaced.
  • variable valve actuation mechanism of this embodiment is capable of performing accurate valve actuation control, while maintaining the strength of the control shaft 232.
  • the supplied oil pressure value corresponding to the cylinder #1 is set to a value PI
  • the supplied oil pressure value corresponding to the cylinder #2 is set to a value P2
  • the supplied oil pressure value corresponding to the cylinder #3 is set to a value P3
  • the supplied oil pressure value corresponding to the cylinder #4 is set a value P4.
  • the inequality PI ⁇ P2 ⁇ P3 ⁇ P4 is satisfied.
  • the ratio of the lengths of the coupler shafts 532d(#l to #4) to the engaging portions 532c (#1 to #4) gradually increases as the distance from the slide actuator increases.
  • the coupler shafts 532d( #1 to #3) is elongated as the distance from the slide actuator is increased (a3 ⁇ a2 ⁇ all
  • control shaft is integrated with the ball screw shaft lOOe of the slide actuator 100, the axial position of the control shaft can be adjusted only by the slide actuator without using the urging mechanism 102. Even if the engaging portions, the coupler shafts, and the ball screw shaft are integrated, the urging mechanism 102 may be used to assist the movement of the control shaft.

Landscapes

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

Abstract

Selon l'invention, des parties de prise (132c) entrant en prise avec un engrenage coulissant sont constituées d'un matériau à base de fer, et des arbres de couplage (132d) sont constitués d'un alliage d'aluminium qui est le même matériau que celui d'une culasse. Ainsi, par comparaison avec le cas où l'arbre de commande (132) est entièrement constitué d'un matériau à base de fer, le coefficient de dilatation thermique de l'arbre de commande (132) est plus proche de celui de la culasse. Par conséquent, même si la température ambiante change, la position de chaque partie de prise (132c) par rapport à la culasse ne peut pas changer. En outre, étant donné qu'elles sont constituées d'un matériau à base de fer, les parties de prise (132c) présentent une résistance suffisante, ce qui empêche la déformation de l'arbre de commande (132).
PCT/JP2005/000949 2004-01-19 2005-01-19 Mecanisme d'actionnement de soupape variable pour moteur a combustion interne WO2005068793A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US10/586,257 US20070163523A1 (en) 2004-01-19 2005-01-19 Variable valve actuation mechanism for an internal combustion engine
DE602005003785T DE602005003785T2 (de) 2004-01-19 2005-01-19 Verstellbarer ventilbetätigungsmechanismus für einen verbrennungsmotor
EP05704093A EP1711693B1 (fr) 2004-01-19 2005-01-19 Mecanisme d'actionnement de soupape variable pour moteur a combustion interne

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2004-010896 2004-01-19
JP2004010896 2004-01-19
JP2004153936 2004-05-24
JP2004-153936 2004-05-24
JP2004-226145 2004-08-02
JP2004226145A JP2006009774A (ja) 2003-08-08 2004-08-02 内燃機関の可変動弁機構

Publications (1)

Publication Number Publication Date
WO2005068793A1 true WO2005068793A1 (fr) 2005-07-28

Family

ID=34799326

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2005/000949 WO2005068793A1 (fr) 2004-01-19 2005-01-19 Mecanisme d'actionnement de soupape variable pour moteur a combustion interne

Country Status (4)

Country Link
US (1) US20070163523A1 (fr)
EP (1) EP1711693B1 (fr)
DE (1) DE602005003785T2 (fr)
WO (1) WO2005068793A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7891329B2 (en) 2006-05-15 2011-02-22 GM Global Technology Operations LLC Compact lash adjuster feed channel apparatus
EP2843203A4 (fr) * 2012-04-27 2016-03-02 Toyota Motor Co Ltd Mécanisme de soupape pour moteur à combustion interne et dispositif de commande pour mécanisme de soupape

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007083225A1 (fr) * 2006-01-19 2007-07-26 Toyota Jidosha Kabushiki Kaisha Structure de support pour arbres à cames pour moteur à combustion interne
US8640660B2 (en) 2011-03-10 2014-02-04 Jesper Frickmann Continuously variable valve actuation apparatus for an internal combustion engine
US9032920B2 (en) * 2012-01-01 2015-05-19 Brian Robards Axial piston internal combustion engine using an Atkinson cycle
JP2016035252A (ja) * 2014-08-04 2016-03-17 トヨタ自動車株式会社 内燃機関の動弁装置
DE102016208472A1 (de) * 2016-05-18 2017-11-23 Schaeffler Technologies AG & Co. KG Anordnung zur elektromechanischen Betätigung zumindest eines schaltbaren Schlepphebels für einen Ventiltrieb einer Brennkraftmaschine

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3490423A (en) * 1968-06-20 1970-01-20 Gen Motors Corp Variable stroke hydraulic valve lifter
US4741298A (en) * 1986-08-04 1988-05-03 Rhoads Gary E Rollerized timing lifter
EP0281990A1 (fr) * 1987-03-11 1988-09-14 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Compensateur hydraulique de jeu
US5267536A (en) * 1990-11-30 1993-12-07 Ryobi Limited Four-stroke engine having an improved valve mechanism
US5351661A (en) * 1992-06-27 1994-10-04 Mercedes-Benz Ag Multi-cylinder internal combustion engine valve actuator
US6216557B1 (en) * 1994-07-12 2001-04-17 Honda Giken Kogyo Kabushiki Kaisha Push rod, and process for producing the same
EP1143119A2 (fr) * 2000-03-21 2001-10-10 Toyota Jidosha Kabushiki Kaisha Dispositif pour varier la phase et la course d'une soupape et appareil de contrôle de volume d'air d'admission

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5406835A (en) * 1992-06-27 1995-04-18 Mercedes Benz Ag Method for monitoring the switching process of a coupling device
JP4158507B2 (ja) * 2002-12-05 2008-10-01 トヨタ自動車株式会社 内燃機関の弁駆動システム

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3490423A (en) * 1968-06-20 1970-01-20 Gen Motors Corp Variable stroke hydraulic valve lifter
US4741298A (en) * 1986-08-04 1988-05-03 Rhoads Gary E Rollerized timing lifter
EP0281990A1 (fr) * 1987-03-11 1988-09-14 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Compensateur hydraulique de jeu
US5267536A (en) * 1990-11-30 1993-12-07 Ryobi Limited Four-stroke engine having an improved valve mechanism
US5351661A (en) * 1992-06-27 1994-10-04 Mercedes-Benz Ag Multi-cylinder internal combustion engine valve actuator
US6216557B1 (en) * 1994-07-12 2001-04-17 Honda Giken Kogyo Kabushiki Kaisha Push rod, and process for producing the same
EP1143119A2 (fr) * 2000-03-21 2001-10-10 Toyota Jidosha Kabushiki Kaisha Dispositif pour varier la phase et la course d'une soupape et appareil de contrôle de volume d'air d'admission

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7891329B2 (en) 2006-05-15 2011-02-22 GM Global Technology Operations LLC Compact lash adjuster feed channel apparatus
EP2843203A4 (fr) * 2012-04-27 2016-03-02 Toyota Motor Co Ltd Mécanisme de soupape pour moteur à combustion interne et dispositif de commande pour mécanisme de soupape

Also Published As

Publication number Publication date
EP1711693A1 (fr) 2006-10-18
US20070163523A1 (en) 2007-07-19
EP1711693B1 (fr) 2007-12-12
DE602005003785D1 (de) 2008-01-24
DE602005003785T2 (de) 2008-11-27

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