EP1512846A2 - Déphaseur d'arbre à cames avec un boítier et un élément d'entraínement formé de deux matériaux différents - Google Patents

Déphaseur d'arbre à cames avec un boítier et un élément d'entraínement formé de deux matériaux différents Download PDF

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Publication number
EP1512846A2
EP1512846A2 EP04255337A EP04255337A EP1512846A2 EP 1512846 A2 EP1512846 A2 EP 1512846A2 EP 04255337 A EP04255337 A EP 04255337A EP 04255337 A EP04255337 A EP 04255337A EP 1512846 A2 EP1512846 A2 EP 1512846A2
Authority
EP
European Patent Office
Prior art keywords
housing
driving element
phaser
rotor
camshaft
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.)
Withdrawn
Application number
EP04255337A
Other languages
German (de)
English (en)
Inventor
Franklin R. Smith
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.)
BorgWarner Inc
Original Assignee
BorgWarner Inc
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 BorgWarner Inc filed Critical BorgWarner Inc
Publication of EP1512846A2 publication Critical patent/EP1512846A2/fr
Withdrawn legal-status Critical Current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
    • F01L1/022—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
    • 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
    • F01L1/024—Belt 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
    • 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

Definitions

  • the invention pertains to the field of variable camshaft timing systems. More particularly, the invention pertains to variable camshaft timing system in which the housing and the driving element are made of different materials.
  • variable cam timing systems VCT phasers
  • the driving element and the housing are manufactured as one steel metal piece.
  • US 5,722,295 discloses an injection molded crankshaft gear which is made by placing sintered iron insert ring and forming the outside portion and teeth portion of the gear by injection molding a resin and then heat treating the molding so that certain properties are present.
  • US 5,333,668 discloses a process for coating the surface of a ferrous insert with a thin layer of metallic bonding material enabling the coated insert to be united with molten aluminum where the molten aluminum is poured onto the coated insert.
  • the aluminum or ferrous liner insert is preheated and placed in the engine and molten aluminum is poured into the mold to surround the outer surface of the liner.
  • JP 11200819 discloses a camshaft of an over head cam (OHC) engine that drives an intake and exhaust valve that is formed of a synthetic resin and is integrally formed by injection molding with a metal sprocket.
  • OOC over head cam
  • JP06225505 discloses aluminum injected into slot holes and ring shapes in the rotor core of an induction motor.
  • JP 2000297614 discloses a gear and a housing that are integrally provided on an intake camshaft, such that the gear and the housing may rotate.
  • a vane rotor housed in a chamber between the gear and the housing is fastened to the end portion of the intake camshaft to rotate integrally therewith.
  • the housing and the rotor are made of aluminum-type metals.
  • a thin metal sheet of steel is interposed between the vane rotor and the housing.
  • a variable cam timing phaser for an internal combustion engine having at least one camshaft comprising a housing, a rotor, and a driving element.
  • the housing is has an outer circumference for accepting drive force, a circular notched groove, and is made of a first material.
  • the notched groove may be axially centered between the leading and trailing edges of the housing or adjacent to either of the leading or trailing edges of the housing.
  • the rotor connects to a camshaft coaxially located within the housing.
  • the driving element is made of a second material and is coaxially located around the outer circumference of the housing.
  • the first material is aluminum or magnesium and the second material is steel.
  • the driving element may be a gear or a sprocket.
  • the driving element may be axially centered on the housing.
  • Figure 1 shows a variable cam timing phaser in which the housing 104 is made of a first material and contains a circumferential notched groove or inset 114.
  • the notched groove 114 is axially centered on the outer circumference of the housing 104 between the leading and trailing edges of the housing 104.
  • the notched groove 114 receives driving element 108.
  • the driving element 108 is made of a second material.
  • the driving element 108 is used to accept drive and may be a gear if a timing gear is used or a sprocket if a timing chain or timing belt is used.
  • the housing 104 surrounds the rotor 102, which provides a connection, in this case a mounting flange 110 to a camshaft 120 coaxially located within the housing 104.
  • the rotor 102 is shown schematically and no details should be implied, including the shape of the spool 112 and the location of the spool.
  • the first material is preferably aluminum, magnesium, another lightweight material, or plastic.
  • the second material is preferably steel.
  • the rotor 102 may also be made of the same first material as the housing 104. Cover plates 106 are present on either side of the housing 104.
  • Figure 6 shows a cross-section of Figure 1 and the relationship of the housing 104 relative to the rotor 102 to form the chamber 118 for receiving the vane 116 of rotor.
  • Figure 6 also shows examples of an interlocking feature 122,124.
  • the interlocking feature 122, 124 may be any radial feature that facilitates radial, axial, and rotational retention.
  • the interlocking feature 122, 124 may extend from the driving element 108 into the housing 104 as shown by 122 or from the housing 104 to the driving element 108 as shown by 124.
  • the shape of the interlocking feature 122, 124 is not limited to those shown in Figure 6.
  • the interlocking feature 122,124 may be continuously present around the circumference of the housing 104 or may be spaced around the circumference of the housing 104 with one or more interlocking features 122,124 present.
  • the interlocking features 122,124 shown in Figure 6 may be present in any of the embodiments of the present invention.
  • Figure 2 shows a second embodiment in which the housing 204 is made of a first material and contains a circumferential notched groove or inset 214.
  • the notched groove 214 is adjacent to either the leading end or the trailing edge of the housing 204.
  • the notched groove 214 receives driving element 208.
  • the driving element 208 is made of a second material.
  • the driving element 208 is used to accept drive and may be a gear if a timing gear is used or a sprocket if a timing chain or timing belt is used.
  • the housing 204 surrounds the rotor 202 which provides a connection, in this case a mounting flange 210, to a camshaft 220 coaxially located within the housing 204.
  • the rotor 202 is shown schematically and no details should be implied, including the shape of the spool 212 and the location of the spool.
  • the first material is preferably aluminum, magnesium, another lightweight material, or plastic.
  • the second material is preferably steel.
  • the rotor 202 may also be made of the same first material as the housing 204. Cover plates 206 are present on either side of the housing 204.
  • Figure 3 shows another embodiment of the present invention in which the driving element 308 is centrally located around the circumference of the housing 304 between the leading and trailing edges of the housing.
  • the housing 304 is made of a first material and the driving element 308 is made of a second material.
  • the driving element 308 is used to accept drive and may be a gear if a timing gear is used or a sprocket if a timing chain or timing belt is used.
  • the housing 304 surrounds the rotor 302, which provides a connection, in this case a mounting flange 310, to a camshaft 320 coaxially located within the housing 304.
  • the rotor 302 is shown schematically and no details should be implied, including the shape of the spool 312 and the location of the spool.
  • the first material is preferably aluminum, magnesium, another lightweight material, or plastic.
  • the second material is preferably steel.
  • the rotor 302 may also be made of the same material as the housing 304.
  • Figure 4 shows a fourth embodiment in which the housing 404 is made of a first material and contains a circumferential notched groove or inset 414.
  • the notched groove 414 is along the entire outer circumference width of the housing 404 extending between the leading and the trailing edges of the housing 404.
  • the notched groove 414 receives the driving element 408.
  • the driving element 408 is made of a second material.
  • the driving element 408 is used to accept drive and may be a gear if a timing gear is used or a sprocket if a timing chain or timing belt is used.
  • the housing 404 surrounds the rotor 402, which provides a connection, in this case a mounting flange 410, to a camshaft 420 coaxially located within the housing 404.
  • the rotor 402 is shown schematically and no details should be implied, including the shape of the spool 412 and the location of the spool.
  • the first material is preferably aluminum, magnesium, another lightweight material, or plastic.
  • the second material is preferably steel.
  • the rotor 402 may also be made of the same first material as the housing 404. Cover plates 406 are present on either side of the housing 404.
  • Figure 5 shows a cross-section of Figure 4 and the relationship of the housing 404 relative to the rotor 402 to form the chamber 418 for receiving the vane 416 of the rotor 402.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
EP04255337A 2003-09-05 2004-09-02 Déphaseur d'arbre à cames avec un boítier et un élément d'entraínement formé de deux matériaux différents Withdrawn EP1512846A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US50083903P 2003-09-05 2003-09-05
US500839P 2003-09-05

Publications (1)

Publication Number Publication Date
EP1512846A2 true EP1512846A2 (fr) 2005-03-09

Family

ID=34135375

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04255337A Withdrawn EP1512846A2 (fr) 2003-09-05 2004-09-02 Déphaseur d'arbre à cames avec un boítier et un élément d'entraínement formé de deux matériaux différents

Country Status (3)

Country Link
US (1) US20050051121A1 (fr)
EP (1) EP1512846A2 (fr)
JP (1) JP2005083384A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014214119A1 (de) * 2014-07-21 2015-08-20 Schaeffler Technologies AG & Co. KG Nockenwellenversteller
DE102014221192A1 (de) * 2014-10-20 2016-04-21 Schaeffler Technologies AG & Co. KG Nockenwellenversteller

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007056550A1 (de) * 2007-11-23 2009-05-28 Schaeffler Kg Modular aufgebauter Nockenwellenversteller mit Ketten- oder Riemenrad
DE102007056549A1 (de) 2007-11-23 2009-05-28 Schaeffler Kg Gekröpftes Ketten- oder Riemenrad für modular aufgebauten Nockenwellenversteller
US11193399B2 (en) 2018-11-27 2021-12-07 Borgwarner, Inc. Variable camshaft timing assembly
US10954829B2 (en) 2018-12-19 2021-03-23 Borgwarner, Inc. Oldham flexplate for concentric camshafts controlled by variable camshaft timing
US11280228B2 (en) 2020-07-07 2022-03-22 Borgwarner, Inc. Variable camshaft timing assembly
US11852054B2 (en) 2021-09-17 2023-12-26 Borgwarner Inc. Variable camshaft timing system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1204641A (en) * 1969-04-08 1970-09-09 Ford Motor Co Transmission gears
US5333668A (en) * 1991-12-09 1994-08-02 Reynolds Metals Company Process for creation of metallurgically bonded inserts cast-in-place in a cast aluminum article
US5588404A (en) * 1994-12-12 1996-12-31 General Motors Corporation Variable cam phaser and method of assembly
JPH0989081A (ja) * 1995-09-28 1997-03-31 Fuji Heavy Ind Ltd 汎用エンジンの射出成形ギヤ及びその製造方法
DE19708661B4 (de) * 1997-03-04 2005-06-16 Ina-Schaeffler Kg Vorrichtung zur Variierung der Ventilsteuerzeiten einer Brennkraftmaschine, insbesondere Nockenwellen-Verstelleinrichtung nach dem Flügelzellenprinzip
US6283076B1 (en) * 2000-06-09 2001-09-04 Borgwarner Inc. Torsionally compliant sprocket for engine balance shaft drive and method of manufacture

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014214119A1 (de) * 2014-07-21 2015-08-20 Schaeffler Technologies AG & Co. KG Nockenwellenversteller
DE102014221192A1 (de) * 2014-10-20 2016-04-21 Schaeffler Technologies AG & Co. KG Nockenwellenversteller

Also Published As

Publication number Publication date
US20050051121A1 (en) 2005-03-10
JP2005083384A (ja) 2005-03-31

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