CONTROLLER OF INTERNAL COMBUSTION ENGINE

摘要

The quantity of air filling a cylinder is divided into a first quantity of air and a second quantity of air. The first quantity of air and the second quantity of air are calculated respectively and summed to calculate the quantity of air filling the cylinder. The first quantity of air is the surplus quantity of air filling the cylinder for the quantity of air passing through a throttle valve resulting from intake stroke. Intake pressure lowering amount, i.e. lowering amount of intake pressure resulting from intake stroke, is detected for each cylinder and total value of lowering amount of intake pressure within the range of 720° crank angle is calculated. The first quantity of air is calculated based on the lowering amount of intake pressure and the total value of lowering amount of intake pressure. With such an arrangement, the quantity of air filling the cylinder can be calculated easily and accurately.