| 摘要 |
<p>PURPOSE:To prevent the occurrence of time lag in driving torque distribution control by performing all operations for changing the magnitude of oil pressure supplied to a hydraulic servo chamber and supplying and discharging the oil pressure by switching operation of directional control valves. CONSTITUTION:When an electric current is applied to directional control valves 86, 130 and both solenoid valves 86 and 130 are opened, both a spool valve 92 of the first directional control valve 86 and a spool valve 112 of the second directional control valve 110 are located at upper positions. At this time, an outlet port 122 is connected and communicated with an outlet port 102 of the first directional control valve 90 through an inlet port 114 and an oil passage 108. Since the outlet port 102 is communicated with an inlet port 100, line oil pressure is directly supplied to the outlet port 122, so that the line oil pressure is supplied as clutch oil pressure to a hydraulic servo chamber.</p> |
