An apparatus for estimating of air force material conditions and device for controlling air force material conditions of individual cylinders in an internal combustion engine

摘要

A single cylinder air force substance ratio estimation model is designed to the mixture of gases which are ejected from adjacent combustion cylinders, and a movement to be taken into account by the a mixed gas at the position of an air-fuel ratio sensor (16) is required, thus influences, which on the intervals (combustion intervals) of the adjoining combustion cylinder are to be attributed, on the estimated values of the individual cylinder air force material conditions can be reflected. When assessing the mixture of the gases, which are ejected from the adjacent combustion cylinders, the lengths and designing the exhaust gas manifold (12) of the respective combustion cylinder taken into account. When assessing the movement, through which the mixed gas at the position of the air-fuel ratio sensor (16) is of importance, are a distance or a volume of the together flow to the position of the air-fuel ratio sensor (16), and the discharge quantities of the respective combustion cylinder taken into account.