Fuel Injection Control
WARNING: This page is about a different car, the 2017 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
CATALYST-HEATING COMBUSTION
Catalyst-heating combustion is a combustion method.
Right after a start with the engine coolant temperature between - 12°C (10.2°F) to 40°C (104°F), the catalyst warm-up is accelerated by this combustion.
HOMOGENEOUS COMBUSTION
Homogeneous combustion is a combustion method that fuel is injected during intake process so that combustion occurs in the entire combustion chamber, as is common with conventional methods.
As for a start except for starts with the engine cold, homogeneous combustion occurs.