| 摘要 |
An internal combustion engine ( 1 ) provided with a valve mechanism (VM) able to change a valve opening characteristic of at least one of an intake valve (Vi) and exhaust valve (Ve), a cylinder pressure sensor ( 15 ) for detecting a cylinder pressure in a combustion chamber ( 3 ), and an ECU ( 20 ), wherein the ECU ( 20 ) calculates the amount of air sucked into the combustion chamber ( 3 ) based on an intake air pressure during valve overlap between the intake valve (Vi) and the exhaust valve (Ve), the exhaust gas pressure during valve overlap, a cylinder pressure during the compression stroke detected by a cylinder sensor ( 15 ), and a gas passage effective area during valve overlap.
|
