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    • 2. 发明授权
    • Exhaust gas recirculation system for a turbocharged internal combustion engine
    • 用于涡轮增压内燃机的废气再循环系统
    • US06354084B1
    • 2002-03-12
    • US09378647
    • 1999-08-20
    • Thomas L. McKinleyPhilip M. DimpelfeldJohn M. Mulloy
    • Thomas L. McKinleyPhilip M. DimpelfeldJohn M. Mulloy
    • F02B3344
    • F02D41/0065F02B29/0406F02B37/18F02B37/24F02D9/04F02D9/06F02M26/05F02M26/10F02M26/23F02M26/33Y02T10/146Y02T10/47
    • An exhaust gas recirculation (EGR) enhancement system for a turbocharged internal combustion engine includes a throttle valve arranged in the exhaust duct of the engine, downstream of the EGR system. The throttle valve is controlled in response to engine load and engine speed to selectively provide back pressure upstream of the throttle valve to selectively drive an EGR exhaust flow through an EGR duct to the intake manifold. An embodiment of the EGR system includes a cooler that lowers the temperature of the EGR exhaust flow to provide better reductions in nitric oxide emissions. The exhaust turbine of the turbocharger may be of the fixed geometry type or the variable geometry type to provide a turbine with a fixed or variable swallowing capacity. The fixed geometry turbine is preferably equipped to allow excess pressure to be released through a wastegate duct arranged in fluid parallel with the exhaust turbine, thereby allowing for higher power and higher speeds.
    • 用于涡轮增压内燃机的废气再循环(EGR)增强系统包括布置在发动机的排气管道中的节气门,在EGR系统的下游。 节流阀根据发动机负荷和发动机转速进行控制,以选择性地提供节流阀上游的背压,以选择性地驱动通过EGR管道的EGR排气流到进气歧管。 EGR系统的一个实施例包括一个降低EGR排气流的温度以降低一氧化氮排放量的冷却器。 涡轮增压器的排气涡轮可以是固定几何形状或可变几何形式,以为涡轮机提供固定或可变吞咽能力。 固定几何涡轮优选地被设置成允许通过布置成与排气涡轮平行流动的废气门管道释放过量的压力,从而允许更高的功率和更高的速度。
    • 9. 发明授权
    • Turbomachine
    • 涡轮机
    • US4227855A
    • 1980-10-14
    • US936695
    • 1978-08-25
    • Patrick F. FlynnHarold G. WeberJohn M. Mulloy
    • Patrick F. FlynnHarold G. WeberJohn M. Mulloy
    • F01D5/04F04D29/28
    • F01D5/043F01D5/048F04D29/284
    • A turbomachine for a compressible fluid is provided which includes a compressor wheel having a plurality of vanes extending from a generally axial flow inlet to a generally radial flow outlet. Adjacent vanes define fluid passageways having a generally axially oriented section near the inlet and a generally radially oriented section near the outlet. Located substantially within the generally radially oriented sections of a predetermined number of passageways is a reference station which has a configuration such that the mean tangential dimension of said passageway at said reference station is no more than about 60% of the circumference of the rotor at that mean radius divided by the number of vanes at that radius. Each reference station serves to effect substantial attachment of the flowing fluid to the surfaces defining said passageway, particularly at low mass flow, and, thus, broaden the usable flow range of the compressor.
    • 提供了一种用于可压缩流体的涡轮机,其包括具有多个叶片的压缩机叶轮,所述多个叶片从大致轴向的流动入口延伸到大致径向的流动出口。 相邻的叶片限定在入口附近具有大致轴向定向的部分的流体通道和靠近出口的大致径向定向的部分。 基本上位于预定数量的通道的通常径向定向的部分内的是具有这样一种构造的参考站,所述构造使得在所述参考站处的所述通道的平均切向尺寸不超过所述转子圆周的大约60% 平均半径除以该半径处的叶片数。 每个参考站用于实质上将流动的流体附着到限定所述通道的表面,特别是在低质量流动下,从而扩大压缩机的可用流量范围。