| 摘要 |
PURPOSE: An exhaust gas recirculation apparatus for a supercharged engine and a control method thereof are provided to rapidly warm up an after-exhaust treatment device and an engine, and to guarantee the control degree of freedom and diversity. CONSTITUTION: A exhaust gas recirculation apparatus for a supercharged engine comprises a turbocharger(3), a supercharger(7), an exhaust gas recirculation(EGR) line(9), an EGR bypass line(11), and an EGR bypass valve(13). As to the turbocharger, a turbine(T) is connected to the exhaust manifold(1) of an engine. The supercharger is connected to the intake manifold(5) of the engine. The EGR line is connected to the intake manifold from the exhaust manifold. The EGR bypass line is connected to the leading end of the supercharger from the exhaust manifold. The EGR bypass valve opens and closes the EGR bypass line. The EGR line comprises an EGR valve(17) which adjusts the EGR amount of an EGR cooler(15). The compressor(C) of the turbocharger is connected to the leading end of the supercharger. |
