초록 ▼

A Roots blower driven by a direct-current motor provided to a recirculation duct for connecting an exhaust duct and an intake duct to extract a part of exhaust gas of a diesel engine to recirculate to an intake side. Accordingly, even when a differential pressure between an exhaust side and the inta

A Roots blower driven by a direct-current motor provided to a recirculation duct for connecting an exhaust duct and an intake duct to extract a part of exhaust gas of a diesel engine to recirculate to an intake side. Accordingly, even when a differential pressure between an exhaust side and the intake side, or even when a pressure on the intake side is higher than the exhaust side fluctuates, the exhaust gas flowing to the recirculation duct can be forcibly pumped by the Roots blower while appropriately controlling flow rate thereof, so that an optimum recirculation amount of exhaust gas in accordance with operation condition of the diesel engine can be recirculated to the intake side.

대표청구항 ▼

1. An exhaust gas recirculation device for extracting a part of an exhaust gas of an internal combustion engine and recirculating the exhaust gas into an intake side, comprising a gas feeder capable of rotating in both normal and reverse directions installed in a recirculation duct connecting an exh

1. An exhaust gas recirculation device for extracting a part of an exhaust gas of an internal combustion engine and recirculating the exhaust gas into an intake side, comprising a gas feeder capable of rotating in both normal and reverse directions installed in a recirculation duct connecting an exhaust duct and an intake duct of the internal combustion engine.