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
  • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
  • F01L1/047—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
  • F01L1/34—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
• • 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
  • F01L2810/00—Arrangements solving specific problems in relation with valve gears
  • F01L2810/02—Lubrication
• • 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
  • F01L2820/01—Absolute values
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T74/00—Machine element or mechanism
  • Y10T74/21—Elements
  • Y10T74/2101—Cams
  • Y10T74/2102—Adjustable

Definitions

• the present invention relates to an adjusting device for a camshaft, according to the preamble of patent claim 1.
• the design of the adjusting device allows any phase angle between the drive element and the driven element.
• the brake is designed as bermmungsios working, electromagnetic brake; Preferably, a hysteresis brake is used whose braking torque is independent of the speed.
• the present invention is therefore based on the object to provide a Versfeilvortechnische for a camshaft, which is inexpensive to produce. This object is solved by the features of patent claim 1. Further embodiments and advantages of the invention will become apparent from the dependent claims,
• an adjusting device for a camshaft comprising a braking system and an output side connected to the camshaft and the crankshaft drive side ⁇ berlagerungsgetriebe, wherein the superposition gear for adjusting the camshaft dissipates a part of the drive-side energy in the brake system, wherein the brake system is designed as a frictional braking system in which the required braking force is generated via a friction lining in permanent slip.
• the adjusting device according to the invention has an additional mechanical lock.
• a phase adjustment between the drive-side sprocket or pulley and the output-side cam lobe can be made or a phase position once set can be held in position.
• the reibschl ⁇ ssige brake system is designed as an electromagnetically actuated friction system.
• the superposition gear can be designed as a planetary gear or ais gear with two Clarfimratorn and a two-stage planet, with any form of superposition gear is suitable for use in the system according to the invention.
• the reibschl ⁇ ssige brake system with additional mechanical locking of the adjustment device comprises an electrically actuated shift coil 1, which has a friction surface 8, a magnetic Reibbeiag 2 with a locking element 6 and a spring 3, wherein the locking element 6 with a drive-side element 5 of Matteriage- gearing 7 cooperates.
• the friction lining 2 is axially movable but rotationally fixed to a spur gear 4 of the superimposed ngsgetriebes 7.
• the superposition gear 7 is designed as a gearbox with two sunstones 4, 9 and a two-stage planet 10.
• the camshaft is rotatably connected to the second spur gear 9 of the superposition gear 7; the drive is connected to the planet carrier.
• the superposition gear 7 as Pianetengetriebe it is advantageous to arrange the friction lining 2 on the sun teeth;
• the camshaft is connected to the ring gear.
• the required phase angle can be adjusted and maintained via a planetary gear set or other ⁇ berlagerungsge ⁇ be.
• the friction lining 2 is oil-filled; This can be done either from the outside ⁇ Qlnebel, etc.) or from the middle of the camshaft.
• the friction lining 2 can be used as a paper covering with special embossing, comprising e.g. Radial grooves with waffle pattern, or be designed as a carbon coating. In the version as a carbon lining this can have a covering thickness of about 0.05 mm.
• a Carbonbeiag has the advantage that the wear is very low.
• the braking torque can also be generated via a mixed friction.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Valve Device For Special Equipments (AREA)
• Braking Arrangements (AREA)
• Valve-Gear Or Valve Arrangements (AREA)

Priority Applications (6)

Applications Claiming Priority (2)

Publications (1)

Family

ID=38069093

Family Applications (1)

Country Status (7)

Families Citing this family (9)

Citations (4)

Family Cites Families (3)

• 2006
  • 2006-03-15 DE DE102006011806A patent/DE102006011806A1/de not_active Withdrawn
• 2007
  • 2007-02-12 KR KR1020087018114A patent/KR101311689B1/ko not_active Expired - Fee Related
  • 2007-02-12 EP EP07712206A patent/EP1994262B1/de not_active Not-in-force
  • 2007-02-12 DE DE502007002410T patent/DE502007002410D1/de active Active
  • 2007-02-12 AT AT07712206T patent/ATE453041T1/de active
  • 2007-02-12 WO PCT/EP2007/051306 patent/WO2007104620A1/de not_active Ceased
  • 2007-02-12 US US12/282,380 patent/US7841312B2/en not_active Expired - Fee Related
  • 2007-02-12 JP JP2008558747A patent/JP4921493B2/ja not_active Expired - Fee Related

Patent Citations (4)

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