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    • 7. 发明授权
    • Arrangement for exhaust braking of a combustion engine
    • 内燃机排气制动装置
    • US08646433B2
    • 2014-02-11
    • US12865146
    • 2009-01-26
    • Håkan FranssonRoger Olsson
    • Håkan FranssonRoger Olsson
    • F02D9/06F02B37/24F02D33/02
    • F02B37/183F01D17/165F02B37/22F02D9/06Y02T10/144
    • An arrangement for exhaust braking of a combustion engine (2) which is equipped with a turbo unit with at least one flow element in the form of a vane or rail (17, 27) settable in varying positions to control the flow of exhaust gases through the turbine (6). A bypass line (25) provided with an inlet aperture (25a) is connected to an exhaust passage (4a, 19, 20) at a location upstream of the flow element (17, 27). An outlet aperture (25b) is connected to the exhaust passage (21, 4b) at a location downstream of the flow element (17, 27). A throttle (26) in the bypass line. A control device (13, 18) places the flow element (17, 27) in a substantially closed position when an exhaust braking process is to be effected, so that a positive pressure occurs in the exhaust passage (4a, 19) at a location upstream of the flow element (17, 27), which positive pressure is defined by the throttle (26).
    • 一种用于内燃机(2)的排气制动装置,其配备有涡轮单元,所述涡轮单元具有叶片或轨道(17,27)形式的至少一个流动元件,所述流动元件可设置在不同位置以控制废气流过 涡轮(6)。 设置有入口孔(25a)的旁通管路(25)在流动元件(17,27)上游的位置处连接到排气通道(4a,19,20)。 出口孔(25b)在流动元件(17,27)的下游位置连接到排气通道(21,4b)。 旁路管路中的节气门(26)。 当要执行排气制动过程时,控制装置(13,18)将流动元件(17,27)放置在基本上关闭的位置,使得在排气通道(4a,19)中的位置产生正压 在流动元件(17,27)的上游,该正压由节流阀(26)限定。