SEALING MEANS FOR A LUBRICATION SYSTEM IN A TURBOCHARGER

摘要

A multi-turbocharger boosting system for an internal combustion engine (603) comprises a first turbocharger (601) having a first exhaust gas driven turbine (605) and a first compressor (609) and a second turbocharger (602) having a second exhaust gas driven turbine (607) and a second compressor (611). A first valve (633) controls a mass flow of exhaust gas flowing towards each of the turbines (605, 607) and a second valve (639) controls a mass flow of compressed air flowing from each of the compressors (609, 611).