Patent ID: 9002621
Filing Date: 2015-04-07
Classification: F02D

Abstract:
1. A method for individually correcting at least one of injection quantities and injection times for a fuel injector in an engine of the vehicle, the method comprising: measuring an actual injection quantity of the fuel injector at a particular time, accessing a typical injection characteristic curve for the fuel injector, the typical injection characteristic curve relating to a plurality of fuel injectors, generating an injector-specific characteristic injection curve based at least on the measured actual injection quantity at the particular time, during a driving operation of the vehicle, determining an injection quantity deviation between the measured actual injection quantity at the particular time and a nominal injection quantity corresponding to the particular time as defined by a nominal injection characteristic curve for the fuel injector, determining an injection time deviation based on the determined injection quantity deviation, adjusting the injector-specific characteristic injection curve based on the determined injection time deviation, including: generating a correction function based on the adjusted injector-specific characteristic injection curve, the correction function defining corrected injection times for providing setpoint injection quantities, and subsequently actuating the fuel injector based on the correction function.