| 摘要 |
A start-up and retarder element having a hydrodynamic transfer element (5, 5′) and a planetary gear set (4). The hydrodynamic transfer element (5, 5′) has at least one first functional wheel (11, 11′) and one second functional wheel (12, 12′). The first functional wheel (11, 11′) can be fixed on a stationary component (14) by a single shift element (15). A start-up function or a driving function can be set in which the functional wheels (11, 11′; 12, 12′) of the hydrodynamic transfer element (5, 5′) function as an impeller and a turbine, respectively, of a hydrodynamic start-up element so that a retarder function can be set, or the functional wheels (11, 11′; 12, 12′) of the hydrodynamic transfer element (5, 5′) function as a rotor and a stator, respectively, of a hydrodynamic retarder. |
| 主权项 |
1. A start-up and retarder element disposed in a drive train of a vehicle along a power flow between a drive motor (1) and a vehicle transmission (3, 3′, 19, 20, 21), and the start-up and retarder element comprising:
a hydrodynamic transfer element (5, 5′) and a planetary gear set (4), the hydrodynamic transfer element (5, 5′) comprising at least a first functional wheel (11, 11′) and a second functional wheel (12, 12′) which together form a working chamber (13), the working chamber (13) being fillable with fluid, in a controllable manner, in order to set a hydrodynamic transfer torque, the planetary gear set (4) having a ring gear (6), a sun gear (7), and a planet carrier (8) supporting a plurality of planetary gears (9), the first functional wheel (11, 11′) being disposed so as to be rotatable and being directly drivingly connected to one of the ring gear (6) or the sun gear (7), and the first functional wheel (11, 11′) being fixable to a stationary component (14) by only a single shift element (15), the other of the sun gear (7) and the ring gear (6) being either directly drivingly connected to a drive shaft (10) of the drive motor (1) or directly drivingly connected to the drive shaft (10) of the drive motor (1) via a torsional vibration damper (2), the second functional wheel (12, 12′) being disposed so as to be rotatable and being connected to the planet carrier (8), and the planet carrier (8) being either connected or connectable to a transmission input shaft (16) of the vehicle transmission (3, 3′, 19, 20, 21), when the first and the second functional wheels (11, 11′; 12, 12′) of the hydrodynamic transfer element (5, 5′) respectively function as an impeller and a turbine, either a start-up function or a driving function can be set, and when the first and the second functional wheels (11, 11′; 12, 12′) of the hydrodynamic transfer element (5, 5′) respectively function as a rotor and a stator, a retarder function of a hydrodynamic retarder can be set. |
