近年来，高速船用柴油机趋向轻型和高功率化，因此要求柴油机装用高增压、大容量增压器。另外，在柴油机低负荷过渡时，要求增压器有快速响应特性，否则，船舶在港湾内离岸和靠岸发动机加速时会出现排烟问题。为减少船用柴油机在低负荷过渡时的排烟，日本新泻铁工所开发了一种 In recent years, high-speed marine diesel engines tend to be light-weight and high-powered, thus requiring diesel engines to be equipped with high-pressure boosting and large-capacity turbochargers. In addition, when the diesel engine is under a low load transition, the turbocharger is required to have a fast response characteristic, otherwise, the smoke exhaust problem may occur when the engine accelerates while the vessel is off-shore and docked in the harbor. In order to reduce the exhaust of marine diesel engines during low load transition, Niigata Iron Works has developed a