| 摘要 |
PURPOSE:To drive an output recovery engine within the range of its high efficiency by switchingly controlling a primary and a secondary valve mechanism according to the operating condition of an internal combustion engine. CONSTITUTION:When the required output of a Diesel engine 10 is low, three way switching valves 24, 30 are closed to disengage a clutch 36. Supercharging performed by an exhaust turbosupercharger 12a on high pressure side and that 12b on low pressure side enables the engine to generate high output. When the required output of the engine is increased, the three way switching valve 24 is closed, and that 30 is opened to engage the clutch 36. An exhaust gas is partially taken out from an exhaust passage 16 to actuate an output recovery turbine 26. When the output is required further more, the three way switching valve 34 is opened, and the exhaust gas is therefore partially taken out through a primary bypass piping 28 to be supplied to the output recovery turbine 26. |
