| 摘要 |
PURPOSE:To restrain to a small extent the heat distortion of the turbine housing of a main turbo charger caused by exhaust gas, even in the case where a severe high speed operation has been conducted for a long time. CONSTITUTION:An exhaust manifold 3 to run exhaust gas into a main turbo charger 7 and a subs turbo charger 8, and the middle of an exhaust bypass passage 40 positioned downstream of an exhaust bypass valve 41 provided on the sub turbo charger 7 side, are communicatably connected to each other through a waste gate valve passage 55 arranged with a west gate valve 31. |
