| 摘要 |
1. Device in a supercharged internal combustion engine (10), especially for motor vehicles, with an exhaust gas driven turbo-supercharger (24) having a turbine (22) acted upon by the exhaust gas from the internal combustion engine (10) and also a compressor (32) delivering combustion air into an induction air conduit (38), wherein between the induction air conduit (38) downstream of the compressor (32) and the exhaust gas conduit (20) upstream of the turbine (22) a bypass air conduit (50) is provided with a controllable bypass air valve (52) which can close the bypass air conduit (50) completely in a closure postion in dependence on the operating states of the internal combustion engine (10), characterised in that the bypass air valve (52) is so controlled that outside of its closure position it periodically opens the bypass air conduit (50) during the exhaust gas expulsion phases of the internal combustion engine (10) and closes it between the expulsion phases. |
