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    • 1. 发明授权
    • Hydraulic valve control system for internal combustion engines
    • 内燃机液压阀控制系统
    • US5127375A
    • 1992-07-07
    • US680221
    • 1991-04-04
    • Timothy J. BowmanJulian A. LoRussoWarren F. Kaufman
    • Timothy J. BowmanJulian A. LoRussoWarren F. Kaufman
    • F01L9/02
    • F01L9/025F01L9/023F01L2001/34446
    • A modular hydraulic valve actuating assembly for use in association with a single combustion chamber in a multicylinder internal combustion engine cylinder head. The assembly includes a housing having a mounted surface to attach to the cylinder head immediately above a poppet valve. The housing includes a first cavity spaced from and oriented non-parallel to the poppet valve, a second cavity coaxially aligned with the poppet valve, and a fluid passageway extending between and hydraulically coupled to the first and second cavities. A master piston within the housing co-operates with a camshaft to define a first enclosed fluid chamber which varies in displacement as the master piston is reciprocally oscillated by the camshaft. A slave piston within the housing co-operates with the poppet valve to define a second enclosed fluid chamber hydraulically connected to the first and varying in displacement as the slave piston oscillates. A valve means within the housing regulates the flow of fluid from the pressurized master cylinder through an accumulator fluid port thereby automatically varying any one or more of valve lift, valve timing or duration of valve opening in response to an input signal at any point during engine operation.
    • 一种用于与多缸内燃机气缸盖中的单个燃烧室相关联使用的模块化液压阀致动组件。 该组件包括具有安装表面的壳体,其紧靠在提升阀上方的气缸盖上。 壳体包括与提升阀间隔开并定向成不平行于提升阀的第一腔,与提升阀同轴对准的第二腔以及在第一腔和第二腔之间延伸并液压耦合的流体通道。 壳体内的主活塞与凸轮轴配合,以限定当主活塞由凸轮轴往复摆动时位移发生变化的第一封闭流体室。 壳体内的从动活塞与提升阀配合,以限定第二封闭流体室,液压连接到第一封闭流体室,并随着从动活塞的振荡而变化。 壳体内的阀装置调节来自加压主缸的流体流过蓄液器流体端口,从而响应于在发动机期间的任何点处的输入信号而自动改变阀升程,气门正时或阀打开持续时间中的一个或多个 操作。