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Title:
ピストン外周部の軸方向導通路における圧力降下が、予め定められている流体カプリング
Document Type and Number:
Japanese Patent JP5208498
Kind Code:
B2
Abstract:
The invention relates to a hydrokinetic coupling device ( 10 ) consisting of a case ( 12 ) and a lockup clutch ( 18 ) comprising a piston ( 20 ) which can move axially in relation to the case ( 12 ) between an engaged position, in which the piston is applied against an annular transverse face of the case ( 12 ), and a disengaged position at a distance from the transverse face of the case ( 12 ). According to the invention, the piston ( 20 ) is delimited radially by a convex peripheral face ( 20 e) and the case ( 12 ) comprises an opposing inner concave face, said two faces radially defining an essentially-annular axial conduit ( 30 ). The invention is characterised in that the rotating surfaces ( 20 e , 17 i) of the piston ( 20 ) and the case ( 12 ) are shaped such that the value of the head loss experienced by the fluid circulating in the annular conduit ( 30 ) is pre-determined as a function of the axial position of the piston ( 20 ) in relation to the case ( 12 ).

Inventors:
Roel Velfugu
Application Number:
JP2007508953A
Publication Date:
June 12, 2013
Filing Date:
April 20, 2005
Export Citation:
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Assignee:
Valeo Ambrayage
International Classes:
F16H45/02
Domestic Patent References:
JP4004356A
JP2078856U
JP7259953A
JP2081964U
JP2081963U
JP11063152A
JP57140920A
JP3051565A
Attorney, Agent or Firm:
Soichi Takezawa
Noritsugu Nakama