| 摘要 |
A power-assisted gear shifting device (118) for a multi-speed step-change transmission (102) having a step-down design. The power-assisted gear shifting device (118) comprises a plurality of auxiliary units. Each one of the auxiliary units comprises a plurality of valves (4, 5, 6, 7), a shift cylinder (1), a piston (2) and a gear shifting element (2A). Each one of the shift cylinders (1) accommodates one piston (2) which is axially movable along a guiding rail (9) by hydraulic fluid controlled by the plurality of valves (4, 5, 6, 7). The piston (2) is connected to a gear shifting element (2A) which facilitates torque transmission. |
