Patent ID: 7647161
Filing Date: 2010-01-12
Classification: F02D,Y02T

Abstract:
1. A fuel injection controller controlling a fuel injection with a fuel injector which performs a main injection and a pilot injection prior to the main injection into a cylinder during one combustion cycle of a compression-ignition internal combustion engine, the fuel injection controller comprising: an ignition timing detecting means for detecting an ignition timing of a fuel injected at the main injection; a driving condition detecting means for detecting a driving condition of the internal combustion engine; a stable condition determining means for determining whether the driving condition is a specified stable condition; an injection quantity varying means for varying a pilot injection quantity of the pilot injection when the driving condition of the internal combustion engine is the stable condition, an ignition variation detecting means for detecting a variation in ignition timing due to a variation in the pilot injection quantity; and an injection quantity learning means for learning the pilot injection quantity based on the variation in ignition timing due to the variation in the pilot injection quantity.