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    • 7. 发明授权
    • Variable-nozzle type turbo charger
    • 可变喷嘴式涡轮增压器
    • US5996347A
    • 1999-12-07
    • US903382
    • 1997-07-30
    • Masahiro NagaeKouichi AkitaHisashi Ohki
    • Masahiro NagaeKouichi AkitaHisashi Ohki
    • F02B37/12F02B37/18F02B37/24F02D23/02F02D41/06
    • F02D41/068F02B37/18F02B37/24F02D41/064F02D23/02F02D41/061F05B2220/40Y02T10/144
    • A variable-nozzle type turbo charger capable of temporarily decreasing the back pressure of the engine at the start of the engine. The turbo charger is equipped with a plurality of nozzle vanes of which the opening degree can be changed and are capable of changing the areas of turbine nozzles at the time when exhaust gases of an engine are guided from said turbine nozzles formed among said nozzle vanes to a turbine rotor, wherein an actuator that adjusts the opening degree of the nozzle vanes is so controlled that the areas of the turbine nozzles are larger than a minimum area for a predetermined period of time from the start of the engine, and, after the passage of said predetermined period of time, said actuator is so controlled that the areas of said turbine nozzles become the minimum area to promote the warming-up of the engine when the water temperature of the engine or the engine load is smaller than a predetermined value.
    • 一种可变喷嘴型涡轮增压器,其能够在发动机起动时暂时降低发动机的背压。 涡轮增压器配备有多个喷嘴叶片,其开口程度可以改变,并且能够改变当发动机的废气从所述喷嘴叶片之间形成的所述涡轮喷嘴引导到发动机的排气时的涡轮喷嘴的面积到 涡轮转子,其中调节喷嘴叶片的开度的致动器受到如此控制,使得涡轮喷嘴的面积大于从发动机起始一段预定时间段的最小面积,并且在通过后 在所述预定时间段内,所述致动器被如此控制,使得当发动机或发动机负载的水温小于预定值时,所述涡轮喷嘴的面积变成最小面积,以促进发动机的预热。