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    • 53. 发明授权
    • ZYLINDER - KOLBENTRIEB
    • 内燃机缸套 - 活塞
    • EP1485584B1
    • 2008-03-19
    • EP03704222.3
    • 2003-01-17
    • ROBERT BOSCH GMBH
    • MISCHKER, KarstenHAMMER, UweREIMER, StefanENGELBERG, Ralph
    • F01L9/02F01L1/46
    • F01L9/02F01L1/46
    • The invention relates to a cylinder piston drive, particularly a hydraulically controlled actuator (1) actuating a gas exchange valve (2) of a combustion engine, comprising a control piston (8) which moves inside the cylinder (6) and delimits pressure chambers (10, 12) along with opposite ends (14, 16) of the piston. Said control piston (8) has several parts and comprises at least two partial pistons (18, 20), which are inserted into one another, are movable relative to each, and knock against each other at stop faces (36, 38). One pressure chamber (10) is delimited by all partial pistons (20), whereas the other pressure chamber (12) is delimited only by one part thereof. The displacement paths of the partial pistons (18) which do not delimit the other pressure chamber (12) are reduced compared with the total displacement path of the control piston (8). At least one stop face (36) is disposed on the cylinder (6), which a stop face (38) of one of the partial pistons (18) hits after completing the reduced displacement path. At least some of the stop faces that are assigned to each other are configured as conical surfaces (36, 38) which form a conical seat when knocking against each other, whereby the leakage volume flow is reduced by the control piston.
    • 54. 发明授权
    • VORRICHTUNG ZUR RÜCKSTELLUNG EINES DREHGLIEDS
    • VORRICHTUNG ZURRÜCKSTELLUNGEINES DREHGLIEDS
    • EP1356197B1
    • 2006-06-21
    • EP02704609.3
    • 2002-01-23
    • ROBERT BOSCH GMBH
    • KLUG, HaraldBRAUN, AlexanderWENDEL, FriedrichPUPO, ClaudioSCHWEINFURTH, ReinerKAISER, KlausMEIWES, JohannesBROZIO, MichaelHAMMER, UweJOSTEN, Stefan
    • F02D9/10F02D11/10
    • F02D9/10F02D9/1065F02D11/107Y10T74/11Y10T137/1407
    • The invention relates to a device for repositioning a rotating element in a defined base position. Said device comprises a spatially fixed cam (13) and a driving cam (14) which is coupled to the rotating element and can be moved in front of the fixed cam (13), each cam comprising a stop face (131, 132, 142) on opposite sides. The inventive device also comprises a clip spring (18) which clips the cams (13, 14) in a prestressed manner with two bent spring legs (181, 182). In order to ensure that there is no rotational play between the clip spring (18) and the cams (13, 14) in the base position, in at least one section of the spring leg (181) extending over the stop faces (141) of the cam, an elastic spring element (19) is provided, said spring element supporting the associated stop face (141) with a spring force which is smaller than the prestress force of the clip spring (18).
    • 本发明涉及一种用于将旋转元件重新定位在限定的基座位置中的装置。 所述装置包括空间固定凸轮(13)和联接到旋转元件并且可在固定凸轮(13)前方移动的驱动凸轮(14),每个凸轮包括止动面(131,132,142 )在对面。 本发明的装置还包括夹簧(18),其通过两个弯曲的弹簧腿(181,182)以预应力方式夹紧凸轮(13,14)。 为了确保在基本位置中夹簧(18)和凸轮(13,14)之间没有旋转间隙,在弹簧腿(181)的至少一部分延伸超过止动面(141)的区域中, 所述弹簧元件(19)设置有弹性元件(19),所述弹簧元件以小于所述弹簧片(18)的预应力的弹簧力支撑相关的止动面(141)。
    • 59. 发明公开
    • VORRICHTUNG ZUR STEUERUNG VON GASWECHSELVENTILEN
    • EP1415070A1
    • 2004-05-06
    • EP02745076.6
    • 2002-05-23
    • ROBERT BOSCH GMBH
    • DIEHL, UdoROSENAU, BerndHAMMER, UweBEUCHE, VolkerLANG, PeterREIMER, Stefan
    • F01L9/02
    • F01L9/02
    • The invention relates to a device for controlling the gas exchange valves of an internal combustion engine that have respective hydraulic valve adjusters (11) associated with one gas exchange each comprising an adjustment plunger (13) acting on the gas exchange valve and two hydraulic working chambers (121, 122) that are limited by the adjustment plunger (13). The first working chamber (121) that impinges the gas exchange valve (10) in the closing direction is constantly filled with a pressurized fluid, and the second working chamber (122) that impinges the gas exchange valve (10) in the opening direction is alternately filled with a pressurized fluid and relieved via a first and second electric control valve (24, 25 and 26, 27, respectively) In order to reduce the cost of production of such a valve, two valve adjusters (11) each are alternately actuated by the same first and the same second control valve (24 or 26, 25 or 27) and the control valves (24, 25 or 26, 27) are switched during the closed state of the two gas exchange valves (10) that are actuated by said valve adjusters (11).
    • 用于控制内燃机的气体交换阀的装置技术领域本发明涉及一种用于控制内燃机的气体交换阀的装置,该装置具有与一个气体交换器相关联的相应的液压阀调节器(11),每个气体交换器包括作用在气体交换阀上的调节柱塞(13) (121,122),其由调节柱塞(13)限制。 在关闭方向上撞击气体交换阀(10)的第一工作室(121)始终充满加压流体,并且沿打开方向撞击气体交换阀(10)的第二工作室(122)是 交替地充满加压流体并通过第一和第二电动控制阀(分别为24,25和26,27)释放。为了降低这种阀的生产成本,两个阀调节器(11)各自交替地致动 通过相同的第一和相同的第二控制阀(24或26,25或27)和控制阀(24,25或26,27)在被致动的两个气体交换阀(10)的关闭状态期间被切换 通过所述阀调节器(11)。