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    • 64. 发明授权
    • Exhaust manifold integrally cast with turbine housing for turbocharger
    • 用于涡轮增压器的涡轮机壳体整体铸造排气歧管
    • US06256990B1
    • 2001-07-10
    • US09474006
    • 1999-12-28
    • Kenji Itoh
    • Kenji Itoh
    • F01N710
    • F02B67/10F01D9/026F01D25/24F01N13/10F01N2260/10F02B37/02F02B39/00F05D2220/40Y02T10/144
    • An exhaust manifold integrally cast with a turbine housing for a turbocharger has pipe portions having exhaust gas flow paths and a plurality of ports adapted to receive an exhaust gas; flanges respectively extending from the ports; a converged portion connected to the pipe portions and adapted to converge the exhaust gas flow paths in the pipe portions; and a turbine housing integrally connected to the converged portion and having a circular exhaust gas flow path therein. The exhaust gas flow path in the converged portion is in a tangent direction relative to the circular exhaust gas flow path in the turbine housing. A neck portion that connects an outer surface of the turbine housing to an outer surface of the converged portion at a particular angle has a radius of curvature that is relative to the distance in a tangent direction of the exhaust gas flow path from the center of the turbine housing to the converged portion. Namely, the ratio of the radius of the curvature to the distance in the tangent direction of the exhaust gas flow path from the center of the turbine housing to the converged portion is 0.13 or more.
    • 与涡轮增压器的涡轮机壳体整体铸造的排气歧管具有管部分,其具有排气流动路径和适于接收废气的多个端口; 分别从端口延伸的凸缘; 汇合部分,其连接到所述管部分并且适于在所述管部分中会聚所述废气流动路径; 以及涡轮机壳体,其一体地连接到会聚部分并且在其中具有圆形排气流动路径。 会聚部分中的排气流路相对于涡轮机壳体中的圆形废气流路成切线方向。 将涡轮壳体的外表面以特定角度连接到会聚部分的外表面的颈部具有相对于废气流动路径的切线方向上距离中心的距离的曲率半径 涡轮机壳体到会聚部分。 即,曲率半径与从涡轮机壳体的中心到会聚部的排气流路的切线方向的距离的比例为0.13以上。