Patent ID: 6378305
Filing Date: 2002-04-30
Classification: F02B,F02C,F02D,F02M,Y02T

Abstract:
An internal combustion engine having an intake tract having an intake pressure and a corresponding combustion-air quantity, said internal combustion engine also includes an exhaust tract having an exhaust pressure, said internal combustion engine comprising:an exhaust gas turbocharger having a turbine provided in said exhaust tract and a compressor provided in said intake tract, said turbine and said compressor being interconnected, said turbine having a variable turbine geometry, said variable turbine geometry being arranged to allow said turbine to rotate in a first and second direction responsive to actuating signals from a control system which is arranged in operative connection with the turbine such that said compressor of said exhaust-gas turbocharger acts as a throttling device, said second direction being opposite of said first direction, said first direction being a compression direction that generates excess pressure in said intake tract, said second direction being a throttling direction generating a vacuum in said intake tract, wherein said intake pressure is set as a function of said first and second direction of rotation of said turbine.