Patent ID: 6460409
Filing Date: 2002-10-08
Classification: F02D,G05B

Abstract:
A method for controlling an internal combustion engine having at least one intake airflow actuator for regulating intake airflow, the method comprising:predicting current and future positions of the airflow actuator using an actuator model, the future position corresponding to a subsequent engine intake event; determining current and future airflow values corresponding to the predicted current and future positions of the airflow actuator, respectively; estimating in-cylinder air charge for the subsequent engine event based on a difference between the current and future airflow values corresponding to the current and future positions of the airflow actuator, respectively; estimating current and future mass airflow values using an airflow model based on the current and future positions of the airflow actuator, respectively; wherein the difference between the current and future airflow values corresponds to a difference between the current and future mass airflow values; sensing mass airflow using an associated sensor to generate a sensed mass airflow value; and summing the sensed mass airflow value with the difference between the current and future mass airflow values.