| 摘要 |
PURPOSE:To shorten a shifting time even at jump shifting so as not to give a driver a sense of incongruity by supplying oil of controlled pressure due to adjusting a line pressure to a quick oil supply circuit without through an oil quantity limiting means. CONSTITUTION:At respective shiftings of 1-2, 2-3, and 3-4, oil is supplied to respective oil pressure servo B-2, B-0, C-2 through limiting oil supply circuit passing through orifice valves 61, 65, 70, ane oil passages L-1 L-3. When jump shifting is performed, oil is supplied to the respective oil pressure servo B-2, B-0, C-2 through quick oil supply circuit passing through oil passaged L-4-L-6 without through the orifice valves 61, 65, 70. At this time, a linear solenoid valve SLN is directly operated so as to quickly raise the engaging pressure of the respective oil pressure servo B-2, B-0, C-2, and hence respective brakes and clutches are quickly engaged. Hereby the shifting time can be shortened, and the engaging pressure in the transit condition can be accurately controlled. |
