A post-injection amount A required for forced regeneration of a particulate filter is calculated. A ratio B of a residual gas remaining in an inter-cylinder combustion chamber when post injection is performed and a wall surface adhering ratio C of a fuel a...

This system is characterized in that the engine (1) is associated with various components, and with means (17) for controlling the operation of these various components in order to control the operation of the engine, these means being further adapted to t...