| 摘要 |
The hydraulic two circuit steering system includes a changeover valve (21) for alternate connection of the two circuits, so that one circuit is effective and the other ineffective. A changeover signal transmitter (23) which effects the changeover of the changeover valve (21), not only with a fault in the working circuit, but also depending of at least one fault independent parameter. The control units (3,11) of both circuits (1,2) have a different design. |
