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Invention Grant
CN108027045B 自动变速器的油压控制装置 有权

自动变速器的油压控制装置
Abstract:
本发明涉及一种自动变速器的油压控制装置，所述油压控制装置具有：主压调节阀(20)，生成初压；线性电磁阀(SL2)，能够基于调节压(PLPM2)供给接合压(PSL2)；供给压切换部(28)，能够在第一状态和第二状态之间进行切换，在正常时，所述供给压切换部(28)处于第一状态，在异常时，所述供给压切换部(28)从第一状态切换至第二状态，所述第一状态是指，能够向第二离合器(C2)供给接合压(PSL2)的状态，所述第二状态是指，能够向第二离合器(C2)供给调节压(PLPM2)的状态。
Abstract(English):

A hydraulic control device that includes a source pressure generating valve that generates a source pressure; a solenoid valve that can supply the engagement pressure based on the source pressure; and a supply pressure switching valve that can be switched between a first state where the supply pressure switching valve can supply the engagement pressure to the second engagement element and a second state where the supply pressure switching valve can supply the source pressure to the second engagement element, the supply pressure switching valve being in the first state when the solenoid valve is operating normally, and being switched to the second state in case of abnormality in the solenoid valve.

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