| 摘要 |
PROBLEM TO BE SOLVED: To change a lead valve over to an ineffective state at the time of a low load by providing the lead valve to enable EGR at the time of an intermediate high load by using exhaust pulsation in an exhaust gas recirculating pipe. SOLUTION: This exhaust gas recirculation device of an internal combustion engine furnished with a supercharger is provided with an EGR control valve 10 to open and close exhaust gas recirculating pipes 7, 8 on the exhaust gas recirculating pipes 7, 8 to communicate an exhaust manifold 2 of an engine 1 and an air intake pipe 6 to each other and a lead valve 13 free to open and close on the downstream side rather than the EGR control valve 10. The exhaust gas recirculating pipes 7, 8 are changed over to an open state by driving the lead valve 13 by an actuator 19 at the time of a low load of the engine. Exhaust gas is recirculated to the air intake pipe 6 scarcely causing channel resistance at the time of a low load of the engine. |
