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AssigneeValeo
InventorsRabah Arhab, Michel Bacher, Alexandre Depraete, David Forgeron, Daniel Santonnet, Norbert Termenon, Roel Verhoog
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The invention concerns an apparatus comprising a housing (12) with a radial wall (14) coupled with another input shaft, a turbine wheel (104) coupled with a hub (54) and an output shaft; and a lockup clutch comprising a piston (40); an annular friction disc (152) with global radial orientation, coupled in rotation with the turbine wheel (104)/hub (54) assembly and bearing on a first surface a first counter-track (210) co-operating with a first friction track (200) integral with the piston to define a first annular friction zone (Z1), and which bears on its second surface opposite to the first surface, a second counter-track (230) co-operating with a second friction track (220) integral with the radial wall (14) to define a second annular friction zone (Z2). The invention is characterised in that the first and second friction zones (Z1, Z2) are radially offset relative to each other.
A fluid coupling apparatus (10), especially for a motor vehicle, of the type comprising:
Apparatus according to any one of the preceding claims, characterised in that the first and second counteracting faces (210, 230) are each part of at least one friction liner (245, 245′) attached directly or indirectly, either on the friction disc (152) or on the piston (40) and the radial wall (14), or on at least one of the faces of the friction disc (152) and on the piston (40) or the radial wall (14) of the casing (12).
Apparatus according to any one of the preceding claims, characterised in that the first counteracting face (210) is fixed with respect to a second shim (252) fixed on the friction disc (152).
Apparatus according to any one of the preceding claims, characterised in that the friction disc (152) is formed with an inner axial stiffening flange (500).
Dependencies are inferred from the claim text.