| 摘要 |
A system for the shifting of gear in a gear box by the use of shifting elements, wherein each shifting element is provided for being shifted between several positions to choose a specific gear or a neutral mode. The shifting of the shifting elements is controlled by at least one actuator. The system is provided with at least one shifting actuator provided for the operation of at least two shifting elements. The invention further includes an actuator comprising a cylinder unit, preferably provided for the operation of shifting elements in a gear box. The cylinder unit is constituted by a cylinder and pistons which are movably arranged in the bore of the cylinder. The pistons are provided to be arranged in various positions in the bore to provide at least five stable states of the actuator, wherein the pistons are moved into the various positions by fluid being introduced into the cylinder, preferably the cylinder unit is provided for the operation of at least two shifting elements. |
