| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an oil pressure supply device for a hybrid vehicle capable of feeding predetermined hydraulic fluid under pressure even in backward running which becomes a problem when a mechanical hydraulic pump is arranged on an output shaft side of a clutch. <P>SOLUTION: The first hydraulic pump 21 of mechanical driving type is connected to a driving wheel side of the clutch 3 and is always driven when the vehicle runs even if it is driven by a motor. Backward running of the vehicle is realized by releasing the clutch 3 and rotating a motor generator 4 for running reversely. A reverse rotation prevention mechanism 20 using a planetary gear mechanism and a one-way clutch is provided between the motor generator 4 for running and the first hydraulic pump 21. For this reason, even if the motor generator 4 for running rotates reversely when the vehicle runs backward, a rotor of the first hydraulic pump 21 is driven in the same predetermined direction of rotation as the direction in advance running. Since a second electric hydraulic pump 22 shares oil pressure supply only when the vehicle stops, it can be miniaturized. <P>COPYRIGHT: (C)2004,JPO |
