An internal combustion engine and a lubrication system therefor

摘要

An internal combustion engine 8 is provided with a lubrication system for a turbocharger 3 fitted to the engine including an oil pump 2 to supply oil to one or more bearings of the turbocharger 3 from a main oil reservoir 6, a secondary reservoir to receive oil from the turbocharger bearings and a vacuum pump 5 to urge oil to flow from the turbocharger bearings into the secondary reservoir 4 and to pump the oil back from the secondary reservoir 4 to the primary reservoir 6. An additional feature of the invention is that the vacuum pump 5 used to pump oil back from the secondary reservoir can also be used as a source of vacuum for a vacuum operated system 9.