| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a hydraulic control device for an automatic transmission, enabling to supply oil preferentially to the automatic transmission in the state that the discharge amount from an oil pump is reduced. <P>SOLUTION: The hydraulic control device 1 for the automatic transmission 2 includes a circulating oil supply oil path for supplying circulating oil to a starting device 5, a circulating oil discharge oil path for discharging the circulating oil from the starting device 5, and a shift mechanism supply oil path for supplying the oil to a shift mechanism 6. The oil discharged from the oil pump 7 is supplied to the starting device 5 and the shift mechanism 6. For example, in the circulating oil discharge oil path, discharge amount corresponding flow amount changing devices 23, 62, 63, g2, g3 are arranged for changing the flow amount of the circulating oil. A discharge amount corresponding flow amount instruction part 201 gives instructions to the discharge amount corresponding flow amount changing devices 23, 62/g2, 63/g3 to change the flow amount even in the state that the discharge amount of the oil discharged from the oil pump 7 is reduced so that the flow amount into the starting device 5 is reduced to produce hydraulic pressure required for the shift operation of the shift mechanism 6. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
