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A flywheel assembly has a first flywheel which is detachably connected to the crankshaft of a combustion engine, a second flywheel which can be rotated relative to the first, and a torque transformer, such as a hub disc, which is located in a chamber between the two flywheels, which chamber is fille

A flywheel assembly has a first flywheel which is detachably connected to the crankshaft of a combustion engine, a second flywheel which can be rotated relative to the first, and a torque transformer, such as a hub disc, which is located in a chamber between the two flywheels, which chamber is filled with a viscous medium and which torque transformer is equipped with a torsion damping unit. The chamber is defined on that side facing the second flywheel by a cover plate, which encloses an air channel between it and the second flywheel, which air channel extends radially outward from a ventilation opening in the second flywheel. The torque transformer is provided radially outward from the ventilation opening with an annular surface, which annular surface extends preferably in the axial direction. The cover plate extends with its radially inward end in the radial direction to the annular surface and in the axial direction to the radially outer portion of the torque transformer, whereby the annular surface defines the maximum radial distance from the torque transformer to the ventilation opening for the change of direction of the air channel.

대표청구항 ▼

A transmission system for a motor vehicle, said transmission system comprising: a flywheel assembly; a pressure plate releasably fastened to said flywheel assembly; a clutch disc disposed between said pressure plate and said flywheel assembly; said pressure plate being axially movable and for applyi

A transmission system for a motor vehicle, said transmission system comprising: a flywheel assembly; a pressure plate releasably fastened to said flywheel assembly; a clutch disc disposed between said pressure plate and said flywheel assembly; said pressure plate being axially movable and for applying pressure to said clutch disc to engage said clutch disc with said flywheel assembly; said clutch disc comprising friction linings for contacting said pressure plate and said flywheel assembly during engagement of said clutch disc with said flywheel assembly; said flywheel assembly comprising: a first flywheel portion; a second flywheel portion disposed adjacent said first flywheel portion; said first flywheel portion comprising means for non-rotationally connecting said first flywheel portion to a crankshaft of an internal combustion engine; said first flywheel portion being rotatable about an axis of rotation, said axis of rotation defining an axial direction parallel to said axis of rotation; said second flywheel portion being rotatable about said axis of rotation; hub disc means for connecting said first flywheel portion and said second flywheel portion to one another, and for rotating said second flywheel portion with said first flywheel portion; a cover plate disposed between said second flywheel portion and said hub disc means, said cover plate comprising an outer circumferential portion and an inner circumferential portion, said inner circumferential portion being disposed immediately adjacent said hub disc means; said first flywheel portion and said cover plate defining a chamber therebetween, at least a portion of said chamber comprising a viscous medium; at least a portion of said hub disc means being disposed within said chamber; said cover plate, said second flywheel portion and said hub disc means together defining an air channel; said hub disc means further comprising means for deflecting the air in said air channel away from said inner circumferential portion of said cover plate; said means for deflecting comprising an annular surface, said inner circumferential portion of said cover plate being disposed immediately adjacent said annular surface to form a seal for sealing said chamber; said annular surface being oriented substantially parallel to the axis of rotation and extending in a direction towards said second flywheel portion; and said second flywheel portion comprising at least one orifice disposed radially inwardly of said seal, said at least one orifice being in fluid communication with said air channel.