| 摘要 |
A steering system for an articulated vehicle having a pair of double acting steering cylinders and power steering means consisting of a pump and a hydrostatic steering unit to which the steering wheel of the vehicle is interconnected. Control means are disposed between the power steering means and the double acting cylinders for causing fluid to be directed from the power steering means to both of the first and second cylinders during rotation of the steering wheel at a first steering ratio when the pump is in operation, and at a second higher steering ratio when the pump is not in operation to permit manual steering of the vehicle. |
