Device for providing two-stage exhaust gas turbocharger and exhaust gas recirculation system of internal combustion engine, has low pressure-exhaust gas recirculation line including value opens in fresh air line upstream to junction of line

摘要

The device has a set of by-pass lines (14, 16) including a set of valves (15, 17). A high pressure-exhaust gas recirculation line (6) includes a third valve (22) diverting from an exhaust line (5) upstream to a junction of one of the by-pass lines and opens in a fresh air line (4) downstream to fourth valve (19). A low pressure-exhaust gas recirculation line (7) includes a fifth value (25) downstream to a junction of another by-pass line and diverts from the exhaust line upstream sixth valve (21) and opens in the fresh air line upstream to a junction of the third by-pass line (11). An independent claim is also included for a method for providing a variable turbocharger and an exhaust gas recirculation system of an internal combustion engine.