Method for controlling an intake phase of an internal combustion engine

摘要

The invention relates to a method for controlling an intake phase of an internal combustion engine comprising at least one piston arranged for reciprocal motion between a top dead center (TDC) and a bottom dead center (BDC) in a cylinder of the engine, said method comprising the steps of controlling an intake valve of said cylinder to be open for a first time interval including a period during which said piston moves in a range after TDC in order to admit some fluid into said cylinder, controlling said intake valve to be substantially closed for a second time interval succeeding the first time interval in order to obtain an underpressure in said cylinder, and controlling said intake valve to be opened after said second time interval and before said piston reaches BDC in order to admit additional fluid into said cylinder. <??>An advantage of the inventive method is that the volumetric efficiency of the engine can be increased since more air or air/fuel mixture can be charged into the cylinder. <IMAGE>