Patent ID: 6705295
Filing Date: 2004-03-16
Classification: F02D

Abstract:
A method for measuring the fuel pressure prevailing in an electromagnetic injector (6i) of this fuel in one of the cylinders of a direct-injection internal combustion engine, the injectors (6i) associated with the said cylinders being supplied with fuel via a common supply manifold (7) and their open times (Ti) being calculated and controlled by a computer (9), characterized in that:a) any overlap of the open times of at least two of the said injectors (6i) is detected, b) in the absence of such overlap, the fuel pressure in the manifold (7) outside the open time of the injector under consideration is recorded, c) in the presence of such overlap the fuel pressure upon opening of the injector under consideration is recorded, and d) the recorded measurement is corrected as a function of a predetermined variation of fuel pressure induced by the opening of the injector or injectors (6i).