EP 2400121 B1 20140702 - PHASE-VARIABLE DEVICE FOR ENGINE
Title (en)
PHASE-VARIABLE DEVICE FOR ENGINE
Title (de)
PHASENVARIABLE VORRICHTUNG FÜR EINEN MOTOR
Title (fr)
DISPOSITIF À PHASE VARIABLE POUR MOTEUR
Publication
Application
Priority
JP 2009053150 W 20090223
Abstract (en)
[origin: EP2400121A1] PROBLEMS TO BE SOLVED To provide an oil film for permitting transmission of torque between a clutch case and a rotary drum. MEASN FOR SOLVING THE PROBLEMSS A phase-varying apparatus for an automobile engine for varying the valve timing of intake and exhaust valves by moving an intermediate member (30) to cause a relative rotation between an outer cylinder (10) and an inner cylinder (20). The apparatus includes a circular rotary drum (44) connected to the intermediate member (30) and an electromagnetic clutch (42) for generating a braking force that acts on the rotary drum 44. The electromagnetic clutch 42 has an annular clutch case (60) arranged to face the rotary drum (44) and an electromagnetic coil 62 for generating the braking force when energized. Grooves (66) and (67) are formed in the end face (63a) of the inner circumferential wall (63) and in the end face (64a) of the outer circumferential wall (64) of the clutch case (60) such that a torque is transmitted between the rotary drum (44) and the clutch case (60) via the oil film formed in and round the grooves (66 and 67).
IPC 8 full level
F01L 1/34 (2006.01); F01L 1/344 (2006.01)
CPC (source: EP KR US)
F01L 1/34 (2013.01 - KR); F01L 1/344 (2013.01 - KR); F01L 1/34403 (2013.01 - EP US); F01L 1/34406 (2013.01 - EP US); F01L 2001/3522 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 2400121 A1 20111228; EP 2400121 A4 20121205; EP 2400121 B1 20140702; CN 102325968 A 20120118; CN 102325968 B 20150701; JP 5222392 B2 20130626; JP WO2010095257 A1 20120816; KR 101463129 B1 20141120; KR 20110128801 A 20111130; US 2011297114 A1 20111208; WO 2010095257 A1 20100826
DOCDB simple family (application)
EP 09840363 A 20090223; CN 200980157192 A 20090223; JP 2009053150 W 20090223; JP 2011500426 A 20090223; KR 20117016763 A 20090223; US 200913201794 A 20090223