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    • 4. 发明公开
    • AUTOMATIC TRANSMISSION FOR VEHICLE
    • 车辆自动变速器
    • EP2784349A1
    • 2014-10-01
    • EP11876185.7
    • 2011-11-22
    • Toyota Jidosha Kabushiki Kaisha
    • OITA, ShinjiMORISE, Masaru
    • F16H3/66
    • F15B15/02F16D25/061F16H3/663F16H57/10F16H63/3023F16H2063/3093F16H2200/0052F16H2200/2007F16H2200/2023F16H2200/2043F16H2200/2064F16H2200/2082
    • Provided is an automatic transmission for a vehicle having a simple device configuration. A multistage-type automatic transmission (10, 70) for a vehicle provided with a plurality of engaging elements of which the engagement state is changed by hydraulic pressure, namely a first clutch (C1), a second clutch (C2), a first brake (B1), a second brake (B2), and a third brake (B3), in which a plurality of gear stages are selectively established on the basis of the combination of the plurality of engaging elements from engagement to release in accordance with the hydraulic pressure supplied from a hydraulic pressure circuit (60), wherein configurational constraints on the hydraulic pressure circuit (60) are eased and the oil pump may be reduced in size as a result of at least one of the engaging elements from among the plurality of engaging elements being a normally closed engaging element which is made to engage when hydraulic pressure is not supplied from the hydraulic pressure circuit (60).
    • 提供一种用于具有简单装置构造的车辆的自动变速器。 本发明提供一种车辆用多级式自动变速器(10,70),该多级式自动变速器(10,70)具有多个卡合状态通过液压而变化的卡合要素即第一离合器(C1),第二离合器(C2),第一制动器 (B1),第二制动器(B2)和第三制动器(B3),其中基于多个接合元件的组合从啮合到释放根据液压选择性地建立多个齿轮级 从液压回路(60)供应压力,其中,对液压回路(60)的构造限制得以减轻,并且由于多个啮合元件中的至少一个啮合元件的作用,油泵的尺寸可以减小 元件是常闭的接合元件,当液压回路(60)未供应液压时,该接合元件被接合。