| 摘要 |
PROBLEM TO BE SOLVED: To provide a hydraulic control apparatus for a vehicle that prevents a sudden increase in hydraulic pressure in a pressure oil necessary part when the hydraulic pressure of the pressure oil necessary part is obtained by changing a hydraulic pressure source from a low-pressure hydraulic pressure source to a high-pressure hydraulic pressure source. SOLUTION: In the apparatus, a frictional engagement device and a friction type continuously variable transmission are arranged in series. The apparatus includes: the high-pressure hydraulic pressure source 11 driven by an engine 2; and the low-pressure hydraulic pressure source 24 driven by an electric motor 23. The apparatus is configured such that the oil discharged from the source 24 is supplied to a first hydraulic pressure chamber 9 and a second hydraulic pressure chamber 8 when the source 11 is stopped. The apparatus is provided with a switching oil passage 16 for controlling a switching valve 36 that selectively connects either a first supplying path 43 for supplying oil to hydraulic pressure chambers after performing a pressure control of a discharge hydraulic pressure of the source 11 or a second supplying path 14 for supplying oil to hydraulic pressure chambers without performing the pressure control of the discharge hydraulic pressure of the source 11, with the chamber 9, by the discharge pressure of the source 24. COPYRIGHT: (C)2011,JPO&INPIT
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