Piston with two separate combustion zones for an internal combustion engine.

The piston has a tulip (56) comprising a central combustion zone (60) and a peripheral combustion zone (62) surrounding the central combustion zone. An injection unit (44) includes an injector (58) for selectively injecting fuel towards both the (60, 62) zones based on operation parameters of an internal combustion engine. The zones form respective cavities presenting a mean depth with respect to upper side of the piston. An independent claim is also included for an internal combustion engine comprising a piston.