초록 ▼

This invention relates to the construction of the bridging clutch of a hydrodynamic clutch or torque converter, which is constructed with an additional friction disc for the purpose of increasing the transmission capability or reducing the internal pressure. For reducing the load on the casing on th

This invention relates to the construction of the bridging clutch of a hydrodynamic clutch or torque converter, which is constructed with an additional friction disc for the purpose of increasing the transmission capability or reducing the internal pressure. For reducing the load on the casing on the torque converter, the piston of the bridging clutch is mounted on the drive-side casing wall and is connected to this wall in torque-fast manner.

대표청구항 ▼

A hydrodynamic clutch, especially hydrodynamic torque converter, comprising, a casing (7) rotatably driven about an axis of rotation (20) and having a drive-side casing wall (9) and a drive-remote casing wall (8), a pump wheel (10), firmly connected to the drive-remote casing wall (8), a turbine whe

A hydrodynamic clutch, especially hydrodynamic torque converter, comprising, a casing (7) rotatably driven about an axis of rotation (20) and having a drive-side casing wall (9) and a drive-remote casing wall (8), a pump wheel (10), firmly connected to the drive-remote casing wall (8), a turbine wheel (11), rotatably mounted relative to the casing (7) about the axis of rotation (20) between the pump wheel (10) and the drive-side casing wall (9), a bridging clutch (2; 3; 4; 5; 6) in the casing (7) between the turbine wheel (11) and the drive-side casing wall (9), said bridging clutch (2; 3; 4; 5; 6) comprising a guide hub (18) axially fixedly connected with the drive-side casing wall (9), a piston (24, 25; 26; 27) which is axially slidably guided in its radially inner zone on the guide hub (18) concentric to the axis of rotation (20) and is guided torsionally fixed relative to the casing (7) and is sealed relative to the guide hub (18), a stop (23) on the guide hub (18) for limiting the axial sliding movement of the piston (24; 25; 26; 27) relative to the drive-side casing wall (9) towards the turbine wheel (11), a first friction surface (30) in the radially outer zone of the piston (24; 25; 26; 27), a second friction surface (31) on the drive side-casing wall (9) opposite the first friction surface, at least one friction disc (32, 33) disposed between the first and the second friction surfaces (30, 31), which friction disc is in torque-fixed connection in the region of its outer circumference with the turbine wheel (11), and means for alternately subjecting a space between the drive-side casing wall (9) and the piston (24; 25; 26; 27) on the one hand, and a space between the drive remote casing wall (8) and the piston (24; 25; 26; 27) on the other hand to pressurized fluid for the purpose of opening and closing the bridging clutch (2; 3; 4; 5; 6).