Method and system for predicting cylinder air charge in an internal combustion engine for a future cylinder event

摘要

A system and method for predicting cylinder air charge in an internal combustion engine for a future cylinder event is provided. The pressure in an intake manifold is calculated and an estimated position for a throttle plate of the engine at least one cylinder event in the future is determined responsive to an electronic throttle control command. A rate of change of pressure in the intake manifold is then estimated responsive to the measured intake manifold pressure and the estimated throttle plate position. The cylinder air charge is then calculated responsive to the rate of change in pressure in the intake manifold.