VEHICLE DRIVING DEVICE

PROBLEM TO BE SOLVED: To provide a vehicle driving device capable of smoothly starting a vehicle when driving an oil pump again, by quickly supplying hydraulic pressure to a plurality of hydraulic servos from an accumulator. SOLUTION: A hydraulic circuit 50 is provided in a continuously variable transmission 30. Oil passages 60, 61, 63 and 63b are arranged for connecting the accumulator 56 and the oil pump 51. The oil passage 63b is provided with one-way valve 71 for making oil flow only in the direction to the accumulator 56 from the oil pump 51. Three-way check valves 75 and 76 are respectively connected via oil passages 65 and 70 to a forward clutch C1 and a secondary pulley 32, and oil passages 64 and 69 connected to the accumulator 56 and oil passages 63a and 68 connected to the oil pump 51, are respectively connected to residual two ports of the valves 75 and 76. Out of the oil passages 64, 63a, 69 and 68, the oil passage higher in the hydraulic pressure is communicated with the oil passages 65 and 70 by the valves 75 and 76. COPYRIGHT: (C)2009,JPO&INPIT