CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE

PROBLEM TO BE SOLVED: To calculate the air quantity filled in a cylinder simply and accurately. SOLUTION: The air quantity filled in the cylinder is divided into a first air quantity and a second air quantity, the first air quantity and the second air quantity are calculated respectively, and the first air quantity and the second air quantity are summed up to calculate the air quantity filled in the cylinder. The firt air quantity is one excess of the air quantity filled in the cylinder for a throttle valve passage air quantity generated by an intake stroke. An intake pressure decreasing amount which is an decreasing amount of the intake pressure generated by the intake stroke is detected for every cylinder to calculate the sum of the intake pressure decreasing amount in the range of 720°crank angle. The first air quantity is calculated based on the intake pressure decreasing amount and the sum of the intake pressure decreasing amount. COPYRIGHT: (C)2006,JPO&NCIPI