| 摘要 |
PROBLEM TO BE SOLVED: To provide an internal combustion engine controlling device capable of accurately estimating the amount of air filled in a cylinder concerned even in transient operation to favorably bring the air-fuel ratio in a combustion chamber close to a target value, thereby increasing the fuel economy and output and reducing emission. SOLUTION: The device includes a cylinder internal pressure sensor 15 for detecting the internal pressure in a cylinder of the combustion chamber, and a filled air amount calculating means calculating the amount of air filled in the combustion chamber based on the cylinder internal pressure detected by the cylinder internal pressure sensor 15 at a predetermined timing in the course of compression and before combustion is started. It also includes a filled air amount estimating means estimating the amount of air filled in the cylinder concerned based on changes in amount of air filled in at least two cylinders preceding the cylinder concerned in ignition order in the transition operation of the internal combustion engine, and a fuel injection amount determining means determining the fuel injection amount such that the air-fuel ratio of the cylinder concerned coincides with a target air-fuel ratio based on the estimated filled air amount. COPYRIGHT: (C)2009,JPO&INPIT
|
