HOMOGENEOUS CHARGE COMPRESSION IGNITION ENGINE

摘要

An HCCI engine (1) capable of switching combustion mode between SI combustion and HCCI combustion is disclosed. At least one swirl port (10p) and at least one tumble port (11p) communicate with a combustion chamber (13) of the HCCI engine (1). In a first switching period in which the SI combustion is switched to the HCCI combustion, intake air is supplied to the combustion chamber (3) solely through the swirl port (10p). In a second switching period in which the HCCI combustion is switched to the SI combustion, the intake air is supplied to the combustion chamber (3) through at least the tumble port (10p).