Patent ID: 6349708
Filing Date: 2002-02-26
Classification: F02B,Y02T

Abstract:
Method for controlling an internal combustion engine with a mechanically driven supercharger which can be switched on and off by means of a clutch and is arranged in a charge-air line, a bypass-air line with a bypass-air control element connecting the intake and delivery sides of the supercharger, a throttle valve being situated upstream of the supercharger or downstream in the charge-air line, and an engine control unit controlling the clutch or the bypass-air control element, or both, with specifiable values for a degree of opening or a switching state of the clutch, or both,wherein in a specified part-load range of the internal combustion engine, the bypass-air control element closes the bypass-air line as soon as the clutch is opens; wherein the rotational speed of the supercharger with the clutch open is controlled or regulated, or both, by the bypass-air control element; and wherein the torque of the internal combustion engine is increased while the clutch is being engaged.