Patent ID: 8239116
Filing Date: 2012-08-07
Classification: F02D,Y02T

Abstract:
1. A method for generating injection signals for an injection system of an internal combustion engine, comprising the steps: a) generating a first injection signal on the basis of a stored predetermined setpoint value of a combustion timing, the first injection signal triggering a pilot injection of fuel into a combustion chamber of the internal combustion engine; b) generating a combustion signal representing a combustion of the injected fuel; c) determining an actual value for the combustion timing of the pilot injection on the basis of the combustion signal; d) modifying a stored correction value of the setpoint value of the combustion timing on the basis of a deviation of the determined actual value for the combustion timing of the pilot injection from the stored predetermined setpoint value of the combustion timing in such a way that the deviation will be reduced for a subsequent injection; and e) generating a second injection signal on the basis of both (a) the stored predetermined setpoint value of the combustion timing and (b) the modified correction value of the setpoint value of the combustion timing, such that an actual value for a combustion timing of a main injection triggered by the second injection signal approaches the predetermined setpoint value of a combustion timing as compared to the actual value for the combustion timing of the pilot injection.