Low pressure exhaust gas recirculation system for use in internal combustion engine of motor car, has control element arranged in recirculating pipe that opens downstream of control valve in exhaust pipe

摘要

The system (1) has an exhaust gas recirculation part (8) branching an upstream of an exhaust gas control valve (7) and comprising a radiator (9) and a prompt bypass part (11). An exhaust gas reconducting valve (12) is arranged downstream of an exhaust gas cooler (17) in the radiator. A bypass valve (13) is arranged in the bypass part. A recirculating pipe (18) branches from the radiator downstream of the cooler and an upstream of the reconducting valve. A control element (19) is arranged in the recirculating pipe that opens downstream of the control valve in an end exhaust pipe (6). An independent claim is also included for a method for controlling a low pressure exhaust gas recirculation system.