Patent ID: 7152575
Filing Date: 2006-12-26
Classification: F02D,Y02T

Abstract:
1. A method for determining the injection duration of an injection of fuel into an internal combustion engine, whereby the injection duration is determined in dependence on the fuel pressure and in dependence on the quantity of fuel to be injected, the method comprising the steps of: determining the injection duration from a first mapping value and a correction value, reading out the mapping value from a characteristic map in dependence on the fuel pressure and in dependence on the mass of fuel to be injected, and calculating the correction value in dependence on the time interval between the following injection and the last injection, wherein the correction value is described using a function which includes an oscillation factor which takes account of the influence on the injection quantity of the pressure fluctuations generated by at least the last injection in determining the injection duration, and further wherein the oscillation factor includes a sine and/or cosine function.