Internal combustion engine e.g. petrol engine, has exhaust gas recirculation device comprising exhaust gas recirculation pipe between exhaust and suction tracts, and gas pump arranged in pipe for supplying gas into suction tract

摘要

The engine has an exhaust gas turbocharger (2) comprising an exhaust gas turbine (3) in an exhaust tract (4) and a compressor in a suction tract (6). An exhaust gas recirculation device (9) has an exhaust gas recirculation pipe (10) between the exhaust and suction tracts, where the pipe branches off from the exhaust tract downstream of the turbine. A gas pump is arranged in the exhaust gas recirculation pipe for supplying gas into the suction tract, where the gas pump is designed as an auxiliary compressor and driven by an electric motor.