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    • 2. 发明授权
    • Variable displacement pump
    • 可变排量泵
    • US09206690B2
    • 2015-12-08
    • US13444428
    • 2012-04-11
    • Dai NiwataKoji Saga
    • Dai NiwataKoji Saga
    • F04C14/22F01C21/10F01C21/08F04C2/344
    • F01C21/108F01C21/0845F04C2/3442F04C14/226
    • A variable displacement pump includes: side walls provided on both sides of the cam ring in an axial direction; and an introduction passage which is formed on one of the separation walls across which the hydraulic chambers pass when the hydraulic chambers are moved from the suction portion to the discharge portion, which is arranged to shut off a connection between one of the hydraulic chambers and the control hydraulic chamber by an axial end surface of the cam ring when the cam ring is in a maximum eccentric state, and which is arranged to connect the one of the hydraulic chambers and the control hydraulic chamber by a movement of the cam ring in the direction to decrease the eccentric amount of the cam ring, and thereby to introduce the discharge pressure within the control hydraulic chamber to the one of the hydraulic chambers.
    • 可变排量泵包括:在轴向方向上设置在凸轮环的两侧的侧壁; 以及引导通道,其形成在所述液压室当从所述抽吸部分移动到所述排放部分时所述液压室通过的一个隔离壁上,所述引导通道设置成切断所述液压室中的一个与所述液压室之间的连接, 当所述凸轮环处于最大偏心状态时,由所述凸轮环的轴向端面控制液压室,并且所述液压室被设置成通过所述凸轮环沿所述方向的运动来连接所述液压室和所述控制液压室中的一个 以减小凸轮环的偏心量,从而将控制液压室内的排出压力引导到液压室中的一个。