| 摘要 |
A turbocharger includes a first bypass opening which introduces an exhaust gas from a first exhaust scroll to a downstream area downstream of the turbine impeller, and a second bypass opening which introduces the exhaust gas from a second exhaust scroll to the downstream area. The turbocharger further includes a waste gate valve opens and closes both the first bypass opening and the second bypass opening at the same time. Thus, the waste gate valve can function even though the switch valve is completely closed. Since the exhaust gas is introduced toward the downstream area via both the first bypass opening and the second bypass opening, a pressure loss is restricted and an exhaust pressure of the exhaust gas can be restricted. Further, a turbine efficiency can be improved. |
