Patent ID: 7769530
Filing Date: 2010-08-03
Classification: F02D,Y02T

Abstract:
1. A process for open- and closed-loop control of an internal combustion engine with a common rail system including individual accumulators, comprising the steps of: detecting and storing individual accumulator pressure (pE) within a measuring interval; interpreting an absolute minimum value of the stored individual accumulator pressure (pE) as an end of the main injection (SE(HE)); calculating a virtual starting time for the main injection (SBv(HE)) based of the end of the main injection (SE(HE)), using a mathematical function; filtering the individual accumulator pressure (pE) within a time window in a measuring interval after the end of the main injection (SE(HE)); interpreting a local minimum value of the filtered individual accumulator pressure (pE(F)) as the end of a post-injection (SE(NE)); and calculating a virtual start of the post-injection (SBvNE)) using a mathematical function.