| 摘要 |
PROBLEM TO BE SOLVED: To provide a vehicle drive device provided with a hydraulic circuit capable of efficiently feeding the oil pressure from an accumulator to a clutch in a short time while maintaining the capacity of the accumulator to the required minimum value. SOLUTION: In the hydraulic circuit 50 provided on a continuously variable transmission 30, the accumulator 58 is connected to an oil passage 75 for connecting a shift valve 55 to a forward movement C1 through a solenoid opening/closing valve 57, and a shut-off valve 60 for shutting off the oil passage 75 is provided on the oil passage 75 between a connection point 77a where an oil passage 77 connected to the accumulator 58 is connected and the shift valve 55. Further, the oil passage 77 is made in the communication state just before the oil pump 51 is driven by the solenoid opening/closing valve 57, whereas, it is made in the shutting off state just before the oil pump 51 is stopped. The oil passage 75 is made in the shutting off state by the shutting-off valve 60 when the oil pressure is fed from the accumulator 58 to the forward movement clutch C1. COPYRIGHT: (C)2010,JPO&INPIT |
