| 摘要 |
PURPOSE:To increase an output by a low temperature new charge, by cooling compressed air from a turbocharger by exhaust gas to be fed to a compressor of an air turbocharger and compressed thereafter cooled then fed to an expansion turbine of the air turbocharger and charging an engine with the expanded and cooled air. CONSTITUTION:Exhaust from an engine main unit 1 is introduced from an exhaust manifold 2 into a turbine 41 of an exhaust turbocharger 4, and compressed air from a compressor 42, compressing the outside air, is cooled by an air cooler 5. The compressed air is introduced into a compressor 62 of an air turbocharger 6 further compressed thereafter cooled by an intermediate air cooler 7. An engine, expanding this high pressure cooled air by an expansion turbine 61, is charged with superlow temperature air of low pressure. A new charge is supplied to the engine, when it is at a low speed, through a bypass pipe line 9 by opening an opening and closing valve 8. |
