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    • 17. 发明专利
    • Hydraulic controller
    • JP5304226B2
    • 2013-10-02
    • JP2008330353
    • 2008-12-25
    • トヨタ自動車株式会社
    • 真哉 藤村勇仁 服部隆弘 横川崇穂 川上
    • F16H61/00F15B11/00F16H61/02
    • PROBLEM TO BE SOLVED: To provide a hydraulic control device including a high pressure hydraulic circuit and a low pressure hydraulic circuit and capable of avoiding transitional shortage or decline of hydraulic pressure in the high pressure hydraulic circuit even when hydraulic pressure requirements in the high pressure hydraulic circuit are rapidly increased. SOLUTION: The hydraulic control device includes: the low pressure hydraulic circuit 8, 9 operated by relatively low hydraulic pressure generated by a hydraulic pump 11; the high pressure hydraulic circuit 4, 5 operated by relatively high hydraulic pressure generated by an electric oil pump 14; and an accumulator 17 communicated with the high pressure hydraulic circuit 4, 5 and accumulating the relatively high hydraulic pressure. The hydraulic control device further includes a switching mechanism 15 for preforming switching operation between a first operating state for supplying the hydraulic pressure generated by the hydraulic pump 11 and the electric oil pump 14 to the high pressure hydraulic circuit 4, 5 and the accumulator 17 and a second operating state for supplying the hydraulic pressure generated by the hydraulic pump 11 and the electric oil pump 14 to the high pressure hydraulic circuit 4, 5 without supplying the hydraulic pressure to the accumulator 17. COPYRIGHT: (C)2010,JPO&INPIT