US20090133650A1 - Valve timing control apparatus - Google Patents

Valve timing control apparatus Download PDF

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Publication number
US20090133650A1
US20090133650A1 US12/269,089 US26908908A US2009133650A1 US 20090133650 A1 US20090133650 A1 US 20090133650A1 US 26908908 A US26908908 A US 26908908A US 2009133650 A1 US2009133650 A1 US 2009133650A1
Authority
US
United States
Prior art keywords
rotator
valve timing
control apparatus
timing control
protrusions
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.)
Abandoned
Application number
US12/269,089
Other languages
English (en)
Inventor
Shuji Mizutani
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Denso Corp
Original Assignee
Denso Corp
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 Denso Corp filed Critical Denso Corp
Assigned to DENSO CORPORATION reassignment DENSO CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MIZUTANI, SHUJI
Publication of US20090133650A1 publication Critical patent/US20090133650A1/en
Abandoned 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
    • F01L1/34—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
    • F01L1/352—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 bevel or epicyclic gear
    • 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
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • F01L2001/0475—Hollow camshafts
    • 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
    • F01L2001/0537—Double overhead camshafts [DOHC]
    • 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
    • F01L2001/34423—Details relating to the hydraulic feeding circuit
    • F01L2001/34436—Features or method for avoiding malfunction due to foreign matters in oil
    • F01L2001/3444—Oil filters
    • 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

  • lubricating fluid is supplied to the rotator synchronized with the crankshaft through a guide hole arrangement provided in the rotator synchronized with the camshaft.
  • the meshed part between the gear portion of at least one of these rotators and the planetary gear are lubricated with the lubricating fluid.
  • This lubricating action may improve the durability of the valve timing control apparatus.
  • the planetary carrier 40 is configured into a cylindrical tubular body and has an input portion 41 at an inner peripheral surface of the planetary carrier 40 .
  • the input portion 41 is coaxial with respect to the driving-side rotator 10 and the driven-side rotator 20 and is connected to the rotatable shaft 7 .
  • two engaging grooves 42 are formed in the input portion 41 .
  • a joint 43 is securely fixed to the rotatable shaft 7 through, for example, a pin (not shown). Two radial projections of the joint 43 are fitted into the engaging grooves 42 , respectively, to conned between the rotatable shaft 7 and the input portion 41 and thereby to rotate together with the input portion 41 .
  • the planetary carrier 40 can rotate integrally with the rotatable shaft 7 in response to the generation of the drive torque and can rotate relative to the driving-side internal gear portion 14 in the advancing direction X or the retarding direction Y.
  • the number of teeth of the driving-side external gear portion 52 is smaller than that of the driving-side internal gear portion 14 by a predetermined number, and the number of teeth of the driven-side external gear portion 54 is smaller than that of the driven-side internal gear portion 22 by the same predetermined number.
  • the driving-side external gear portion 52 is placed radially inward of the driving side internal gear portion 14 and is meshed with the driving side internal gear portion 14 .
  • the driven-side external gear portion 54 which is located on the connecting portion 21 side of the driving-side external gear portion 52 , is placed radially inward of the driven-side internal gear portion 22 and is meshed with the driven-side internal gear portion 22 .
  • an inner peripheral wall of the support hole 15 is rotatably supported by the camshaft 2 , and the support hole 15 is placed coaxial with the driven-side rotator 20 , which is fixed to a connecting portion 6 of the camshaft 2 with screws.
  • the camshaft 2 supports the inner peripheral wall of the support hole 15 from a radially inner side of the support hole 15 such that a relatively high radial positioning accuracy between the driving-side rotator 10 and the driven-side rotator 20 is maintained while enabling the relative rotation between the driving-side rotator 10 and the driven-side rotator 20 .
  • the guide hole arrangement 81 (more specifically, the throttling portions 81 a ) opens in the outer end surface 24 , which is opposed to the camshaft-side contact surface 61 of the camshaft 2 and the inner end surface 18 of the driving-side rotator 10 .
  • the guide hole arrangement 81 includes the throttling portions 81 a , each of which is formed as the recess that is axially recessed in the outer end surface 24 of the connecting portion 21 of the driven-side rotator 20 to create the communicating hole or passage.
  • the guide hole arrangement 81 and the contaminant capturing space 82 of the guide passage 80 are formed between the first surface portion 11 , 18 and the second surface portion 24 , 25 . Therefore, it is not required to form a hole that extends through the driving-side rotator 10 and the driven-side rotator 20 .
  • the guide passage 80 of the present embodiment can be formed through a sintering process, a forging process or a press working process, which are other than a drilling process and a cutting process.
  • the guide passage 80 includes the contaminant capturing space 82 .
  • the contaminant capturing space 82 guide the lubricating oil, which is supplied into the guide passage 80 , toward the outer side of the gear portions 14 , 22 , 52 , 54 . Furthermore, at the outer side of the gear portions 14 , 22 , 52 , 54 , the contaminant capturing space 82 forms the contaminant accumulating portion, at which the contaminants contained in the lubricating oil are accumulated. In this way, the lubricating oil, which is supplied into the guide passage 80 , flows through the foreign contaminant capturing space 82 , at which the foreign contaminants contained in the lubricating oil are removed.
  • the contaminant capturing space 82 is placed at least between the inner peripheral surface 11 of the driving-side rotator 10 and the outer peripheral surface 25 of the driven-side rotator 20 to form the annular gap.
  • the lubricating oil which is supplied into the guide passage 80 , flows into this annular gap of the contaminant capturing space 82 , the contaminants are effectively accumulated at the inner peripheral surface 11 side of the annular gap through the application of the centrifugal force, and thereby the contaminants are deposited at the inner peripheral surface 11 .
  • the stopper projections 73 - 75 and the stopper recesses 76 - 78 have the above-described limiting function to limit the variable range of the relative phase between the driving-side rotator 10 and the driven-side rotator 20 upon installation of the stopper projections 73 - 75 into the stopper recesses 76 - 78 , respectively, in a manner that allows the rotation (the swing motion) of the respective stopper projections 73 - 75 within the predetermined circumferential range (predetermined swing range).
  • the redundant stopper recesses 77 , 78 and the corresponding stopper projections 74 , 75 have the fail-safe liming function, which becomes effective at the time of failure of the stopper recess 76 and the stopper projection 73 .
  • a third embodiment of the present invention which is a modification of the first embodiment, will be described with reference to FIG. 10 .
  • a plurality of protrusions 85 each of which is configured into a generally planar quadrangular prism body, is provided in the recess 83 that is formed by the inner end surface 18 and the inner peripheral surface 11 in the contaminant capturing space 82 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
US12/269,089 2007-11-22 2008-11-12 Valve timing control apparatus Abandoned US20090133650A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007303474A JP4453747B2 (ja) 2007-11-22 2007-11-22 バルブタイミング調整装置
JP2007-303474 2007-11-22

Publications (1)

Publication Number Publication Date
US20090133650A1 true US20090133650A1 (en) 2009-05-28

Family

ID=40577254

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/269,089 Abandoned US20090133650A1 (en) 2007-11-22 2008-11-12 Valve timing control apparatus

Country Status (3)

Country Link
US (1) US20090133650A1 (ja)
JP (1) JP4453747B2 (ja)
DE (1) DE102008043987A1 (ja)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110197837A1 (en) * 2010-02-15 2011-08-18 Schaeffler Technologies Gmbh & Co. Kg Cellular wheel
CN106414924A (zh) * 2014-06-02 2017-02-15 舍弗勒技术股份两合公司 凸轮轴调节设备
US20210189923A1 (en) * 2018-09-10 2021-06-24 Denso Corporation Valve timing adjustment device
US11085337B2 (en) * 2019-02-01 2021-08-10 Denso Corporation Valve timing adjustment device

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5652394B2 (ja) 2009-05-27 2015-01-14 日本電気株式会社 通信装置及び通信方法
JP5402571B2 (ja) * 2009-11-26 2014-01-29 株式会社デンソー バルブタイミング調整装置
WO2012150077A1 (de) * 2011-05-02 2012-11-08 Magna Powertrain Ag & Co Kg Vorrichtung zur schmierung
JP6090059B2 (ja) * 2013-08-22 2017-03-08 株式会社デンソー バルブタイミング調整装置
DE102013220221B4 (de) * 2013-10-08 2020-12-03 Schaeffler Technologies AG & Co. KG Nockenwellenverstellvorrichtung
DE102014211518A1 (de) * 2014-07-16 2016-01-21 Schaeffler Technologies AG & Co. KG Nockenwellenverstellergetriebebauteil
DE102016104287B3 (de) * 2016-03-09 2017-02-16 Pierburg Gmbh Vorrichtung zur Phasenverschiebung eines Drehwinkels eines Antriebsteils zu einem Abtriebsteil
JP2017172442A (ja) * 2016-03-23 2017-09-28 トヨタ自動車株式会社 可変バルブタイミング装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4419091B2 (ja) 2005-09-05 2010-02-24 株式会社デンソー バルブタイミング調整装置

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110197837A1 (en) * 2010-02-15 2011-08-18 Schaeffler Technologies Gmbh & Co. Kg Cellular wheel
US8656875B2 (en) * 2010-02-15 2014-02-25 Schaeffler Technologies AG & Co. KG Cellular wheel
CN106414924A (zh) * 2014-06-02 2017-02-15 舍弗勒技术股份两合公司 凸轮轴调节设备
US20210189923A1 (en) * 2018-09-10 2021-06-24 Denso Corporation Valve timing adjustment device
US11939892B2 (en) * 2018-09-10 2024-03-26 Denso Corporation Valve timing adjustment device
US11085337B2 (en) * 2019-02-01 2021-08-10 Denso Corporation Valve timing adjustment device

Also Published As

Publication number Publication date
JP4453747B2 (ja) 2010-04-21
DE102008043987A1 (de) 2009-05-28
JP2009127527A (ja) 2009-06-11

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Legal Events

Date Code Title Description
AS Assignment

Owner name: DENSO CORPORATION, JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MIZUTANI, SHUJI;REEL/FRAME:021819/0582

Effective date: 20081104

STCB Information on status: application discontinuation

Free format text: EXPRESSLY ABANDONED -- DURING EXAMINATION