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    • 8. 发明公开
    • Controller for a hydraulic pump
    • Steuerungfüreine Hydraulikpumpe
    • EP3009675A1
    • 2016-04-20
    • EP14188683.8
    • 2014-10-13
    • Danfoss Power Solutions GmbH & Co. OHGArtemis Intelligent Power Limited
    • Dole, AlexisStein, Uwe Bernhard PascalKuttler, Onno
    • F04B1/06F01B1/06F04B49/00F04B49/22
    • A hydraulic pump (6) comprising: a housing (20) having first and second inlets (100a, 100b) and first and second outlets (102a, 102b); a crankshaft (4) extending within the housing (20) and having axially offset first and second cams (62, 64); first and second groups (30, 32) of piston cylinder assemblies provided in the housing (20), each of the said groups (30, 32) having a plurality of piston cylinder assemblies having a working chamber of cyclically varying volume and being in driving relationship with the crankshaft (4); one or more electronically controllable valves (40) associated with the first and second groups (30, 32); and a controller (70) configured to actively control the opening and/or closing of the said electronically controllable valves (40) on each cycle of working chamber volume to thereby control the net displacement of fluid by the first and second groups (30, 32), wherein at least the first group (30) comprises a first piston cylinder assembly in driving relationship with the first cam (62) and a second piston cylinder assembly in driving relationship with the second cam (64), and wherein the first group is configured to receive working fluid from the first inlet (100a) and to output working fluid to the first outlet (102a) and the second group is configured to receive working fluid from the second inlet (100b) and to output working fluid to the second outlet (102b).
    • 一种液压泵(6),包括:具有第一和第二入口(100a,100b)和第一和第二出口(102a,102b)的壳体(20) 在壳体(20)内延伸并具有轴向偏移的第一和第二凸轮(62,64)的曲轴(4); 设置在壳体(20)中的活塞气缸组件的第一和第二组(30,32),每个所述组(30,32)具有多个活塞气缸组件,所述多个活塞气缸组件具有周期性变化的体积的工作室, 与曲轴(4)的关系; 与第一组和第二组(30,32)相关联的一个或多个电子可控阀(40); 以及控制器(70),被配置为在每个工作室容积循环上主动地控制所述电子可控阀(40)的打开和/或关闭,从而控制由第一组和第二组(30,32) ),其中至少第一组(30)包括与第一凸轮(62)驱动关系的第一活塞气缸组件和与第二凸轮(64)驱动关系的第二活塞气缸组件,并且其中第一组是 ,其被配置为从所述第一入口(100a)接收工作流体并将工作流体输出到所述第一出口(102a),并且所述第二组构造成从所述第二入口(100b)接收工作流体并将工作流体输出到所述第二出口 (102B)。
    • 10. 发明公开
    • Hydraulic transmission
    • Hydraulikgetriebe
    • EP2851562A1
    • 2015-03-25
    • EP14170469.2
    • 2014-05-29
    • MITSUBISHI HEAVY INDUSTRIES, LTD.Artemis Intelligent Power Limited
    • Ohira, TakeoIchinose, HidekazuCaldwell, Niall
    • F03D11/02F16H61/4183
    • F16H61/4183F03D9/25F03D15/00F03D15/20F05B2260/406Y02E10/722Y02E10/726
    • A hydraulic transmission comprising a variable displacement pump and motor, at least one of which has cylinders having valves which are controllable on each cycle of cylinder working volume to determine the net displacement of working fluid by the cylinder. The transmission has a controller which determines a displacement of the pump and the motor. The displacement of the pump and/or motor is controlled to avoid the pump and/or motor generating vibrations with frequencies which correspond to resonant frequencies of portions of a machine which are part of or in mechanical communication with the hydraulic transmission and which arise from the pattern of active and inactive cycles of cylinder working volume, taking into account the speed of rotation of the rotatable shaft of the pump and/or motor.
    • 一种液压变速器,包括可变排量泵和电动机,其中至少一个具有气缸,所述气缸具有可在气缸工作体积的每个循环上控制的阀,以确定气缸的工作流体的净位移。 变速器具有控制器,该控制器确定泵和电动机的位移。 控制泵和/或电动机的位移以避免泵和/或电动机产生具有对应于机械部分的谐振频率的振动的振动,这些部分与液压变速器的一部分或与机械连通的液压变速器的共振频率产生, 考虑到泵和/或电动机的可旋转轴的旋转速度,气缸工作容积的有效和无效循环的模式。