After changing the required values of controlled variables of an inlet system and an EGR system (an air-fuel ratio, an EGR rate, and an intake air amount) into values of a combustion mode after switching with updating a required combustion mode mdcb, the p...

Diesel engine is operated in a first warm-up mode in an early warm-up period after startup so as to accelerate activation of the catalyst, and then in a second warm-up mode in a late warm-up period after the early warm-up period so as to maintain activity ...

A compression-ignition internal combustion engine for conducting pilot injection and main injection beyond the top dead center, wherein pilot injection quantity and timing are optimized. A compression-ignition internal combustion engine, comprising a fuel ...

An internal combustion engine has an EGR passage (24) provided with an EGR control valve (25) and a catalyst (26a) for purifying the EGR gas. When the internal combustion engine operates in a low-temperature combustion mode in which the amount of EGR gas s...

A target homogeneous mode throttle opening TA1 that is suitable for homogeneous stoichiometric combustion without EGR is computed regardless of the current combustion mode. During homogeneous stoichiometric combustion without EGR, the opening of a throttle...