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    • 9. 发明授权
    • Exhaust valve assembly with intermediate position
    • 具有中间位置的排气阀组件
    • US08683789B2
    • 2014-04-01
    • US11602675
    • 2006-11-21
    • Robin WillatsJoseph CallahanKwin Abram
    • Robin WillatsJoseph CallahanKwin Abram
    • F01N1/00
    • F02D9/04F02D41/12F02D2200/101
    • An exhaust valve assembly includes a flapper valve that is mounted on a shaft for rotation within an exhaust component housing between a closed position, an intermediate position, and an open position. An electric actuator is coupled to the shaft to control movement of the flapper valve. The electric actuator moves the flapper valve to the open position for high speed engine conditions. When engine speeds are lowered, and while all engine cylinders remain active, the electric actuator moves the flapper valve to the intermediate position. Once the flapper valve is in the intermediate position, if an engine cylinder is subsequently deactivated, the electric actuator quickly and quietly moves the flapper valve from the intermediate position to the closed position.
    • 排气阀组件包括挡板阀,该挡板阀安装在轴上,用于在关闭位置,中间位置和打开位置之间的排气部件壳体内旋转。 电致动器联接到轴以控制挡板阀的运动。 电动执行器将挡板阀移动到打开位置,以实现高速发动机条件。 当发动机转速降低时,并且当所有发动机气缸保持活动时,电动执行器将挡板阀移动到中间位置。 一旦挡板阀处于中间位置,如果发动机气缸随后被停用,则电动执行器快速且安静地将挡板阀从中间位置移动到关闭位置。