| 摘要 |
PURPOSE:To improve the fuel consumption rate by providing a valve for switching the pressure oil flowing from main power cylinder to the cylinder chamber of auxiliary power cylinder thereby reducing the load of an engine for driving a hydraulic pump. CONSTITUTION:It is comprised of main power cylinder 12, an auxiliary power cylinder 13 interlocked with main power cylinder 12, a control valve 14 for changing the flow of pressure oil to be fed from a hydraulic pump 11 to main and auxiliary power cylinders 12, 13 with correspondence to the steering input provided from the driver and an open/tandem/center/valve 15 provided in the left and right turn oil pressure pipings 63, 64 for coupling between main power cylinder 12 and auxiliary power cylinder 13 where the auxiliary power cylinder 13 is interlocked with main power cylinder 12 during stoppage and under faint speed travel. |
