Piston

An engine comprising:

• a cylinder head;
• an engine block;
• a cylinder provided within the engine block, the cylinder defining an inner surface;
• a fuel injector provided within the cylinder, the fuel injector adapted to inject a fuel at a spray angle within the cylinder;
• and
• a piston provided within the cylinder, the piston comprising:
• a body having a crown disposed about a central axis, the crown having an inner circumference and an outer circumference;
• a central chamber transversely disposed within the body and recessed with respect to the crown;
• a central mound disposed within the central chamber about the central axis;
• a bowl extending from the central mound towards the crown;
• and
• a passageway provided on the inner circumference of the crown, the passageway including a slot defined by a first surface inclined at a first angle with respect to the central axis, wherein the slot is adapted to allow flow of a fuel from the central chamber towards the inner surface of the cylinder.