| 摘要 |
PROBLEM TO BE SOLVED: To correct an injection command signal for a sensor-abnormal injector even if one of fuel pressure sensors of a plurality of injectors becomes abnormal.SOLUTION: A fuel injection control device calculates a learning value for correcting an injection command signal to an injector for each cylinder of an internal combustion engine on the basis of a signal from a fuel pressure sensor provided for the injector. When sensor abnormality of one injector is detected (S310: YES), the fuel injection control device sets a learning value calculated right before the abnormality detection as a reference value (S320) for the sensor-abnormal injector, and selects, as a model injector, a sensor-normal injector whose past learning value variation state is closest to a learning value variation state of the sensor-abnormal injector among other sensor-normal injectors (S330). A value obtained by adding a quantity of learning value variation of the model injector from the point of time when the sensor abnormality is detected to the reference value is used thereafter as an alternative value for the learning value of the sensor-abnormal injector. |
