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    • 4. 发明授权
    • Recirculating exhaust gas cooling device
    • 循环排气冷却装置
    • US6161528A
    • 2000-12-19
    • US182282
    • 1998-10-29
    • Yoshiyuki AkaoNorio NakazawaHiroshi Ogita
    • Yoshiyuki AkaoNorio NakazawaHiroshi Ogita
    • F02M25/07F28D19/04
    • F28D19/041F02M26/31F02M26/40
    • A recirculating exhaust gas cooling device is provided for cooling exhaust gas of a vehicle engine while the exhaust gas is recirculating through an EGR system designed to lower NOx emission levels. The cooling device includes a housing in which an exhaust gas recirculation passage and a cooling fluid passages are located next to each other, to extend in parallel with each other, and a heat-exchange core member rotatably provided in the housing and defining a multiplicity of passages that extend in substantially parallel with a rotational axis of the core member, and a rotating mechanism that rotates the core member. The multiple passages of the core member communicate with both of the exhaust gas recirculation passage and the cooling fluid passage. With the core member being rotated, EGR gas passing through the exhaust gas recirculation passage is cooled by a part of the passages of the core member that has been cooled by a cooling fluid passing through the cooling fluid passage.
    • 提供一种再循环废气冷却装置,用于冷却车辆发动机的废气,同时废气通过设计成降低NOx排放水平的EGR系统再循环。 冷却装置包括壳体,废气再循环通道和冷却流体通道彼此相邻放置,彼此平行地延伸;以及热交换芯部件,其可旋转地设置在壳体中并限定多个 与芯构件的旋转轴线基本平行地延伸的通路,以及使该芯构件旋转的旋转机构。 芯构件的多个通道与废气再循环通道和冷却流体通道两者连通。 在芯件旋转的情况下,通过排气再循环通道的EGR气体被已经被冷却流体冷却的冷却流体冷却的芯部件的一部分通道冷却。