Fuel injection control arrangement for petroleum combustion engine

摘要

The arrangement includes a fuel injection valve for a direct injection of fuel into a combustion chamber of the engine, whereby pulse lengths of an injection pulse signal which is to be output to the injection valve, are corrected in response to a pressure of fuel which is supplied to the injection valve. A calculation arrangement (B) is provided for calculating the pulse lengths of the injection pulse signal based on operating conditions of the engine. An aperture control arrangement (C) corrects the calculated pulse lengths under the assumption, that the pressure of fuel which is to be supplied to the injection valve equals a predetermined reference pressure. A fuel pressure detection arrangement (E) determines the pressure of fuel which is to be supplied to the injection valve, and a regulation arrangement (D) corrects the calculated pulse lengths in response to the determined fuel pressure. A pressure condition discriminator arrangement (F) decides, whether the fuel pressure is to low or to high, and a control switching arrangement (G) activates the aperture control arrangement if the fuel pressure is to low and/or to high.