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    • 4. 发明授权
    • Apparatus for actuating at least one outlet valve of a valve-controlled internal combustion engine
    • 用于致动阀控内燃机的至少一个出口阀的装置
    • US08881703B2
    • 2014-11-11
    • US14059936
    • 2013-10-22
    • MAN Truck & Bus AG
    • Heribert MoellerRainer Kalass
    • F01L1/18F01L1/24F01L13/06
    • F01L1/18F01L1/24F01L13/06
    • An apparatus for actuating at least one outlet valve of a valve-controlled internal combustion engine for motor vehicles, includes an actuating element which is driven by a camshaft. A first piston/cylinder unit, preferably a hydraulically loaded piston/cylinder unit, is provided between a cam of the camshaft and at least one outlet valve. The piston/cylinder unit allows at least one outlet valve to be held in a non-closed intermediate position during an engine braking mode with exhaust-gas backpressure. A second piston/cylinder unit is provided which is configured as a valve-play compensation element, preferably as a hydraulic valve-play compensation element (HVC). At least one valve train-side device is provided between the cam and the at least one outlet valve, which valve train-side device exerts a force which is directed counter to the adjusting action of the HVC but is lower than the latter.
    • 用于致动机动车辆的阀控内燃机的至少一个出口阀的装置包括由凸轮轴驱动的致动元件。 在凸轮轴的凸轮和至少一个出口阀之间设置有第一活塞/缸单元,优选地是液压装载的活塞/缸单元。 在具有排气背压的发动机制动模式期间,活塞/气缸单元允许至少一个出口阀保持在非闭合中间位置。 提供了第二活塞/气缸单元,其被配置为阀打补偿元件,优选地作为液压阀 - 游隙补偿元件(HVC)。 在凸轮和至少一个出口阀之间设置有至少一个气门机构侧装置,该气门机构侧装置施加与HVC的调节作用相反但是低于后者的力。