Patent ID: 8678298
Filing Date: 2014-03-25
Classification: F02D,F02M,Y02T

Abstract:
1. A method of ensuring that a certain amount of fuel is delivered by a fuel injector at each injection cycle over the life of the fuel injector, the fuel injector having an armature constructed and arranged to move between an open position and a close position, the method including: establishing a certain injection duration time of the fuel injector that ensures that a certain amount of fuel is delivered by the fuel injector, establishing a base time (N) for the armature to move from the open position to the close position, comparing a present time (N+1) for the armature to move from the open position to the close position to the base time (N), and if the present time is greater than the base time by a predetermined amount, then 1) setting a present injector duration time to be greater than the certain injector duration time to ensure that the certain amount of fuel is delivered by the fuel injector, or 2) indicating a change in service condition for the fuel injector.