CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE AND METHOD OF CALCULATING INTAKE AIR VOLUME OF THE INTERNAL COMBUSTION ENGINE

摘要

PROBLEM TO BE SOLVED: To provide a practicable control device of an internal combustion engine enabling the accurate calculation of an air sucked into a cylinder at low load and a method of calculating the intake air volume of the internal combustion engine.

SOLUTION: The internal combustion engine 1 generating power by burning the mixture of a fuel and air in each of combustion chambers 3 comprises cylinder pressure sensor 15 installed in the combustion chambers 3 and detecting the cylinder pressure and an ECU 20. The ECU 20 calculates a control parameter as the product of the cylinder pressures detected by the cylinder pressure sensors 15 by values obtained by exponentiating cylinder volumes in detecting the cylinder pressures to specified indexes at specified two points in opening an intake valve Vi, and calculates an air volume sucked into each of the combustion chambers 3 based on a difference in control parameter between the two points.

COPYRIGHT: (C)2005,JPO&NCIPI