Low emission combustion system for internal combustion engines

A combustion system for internal combustion system having a cylinder and at least one piston reciprocal in the cylinder comprising:

• a) a combustion chamber having three regions wherein the piston has a piston head with an outer perimeter portion, a central recessed portion and a baffle with radial slots over the recessed portion, the piston cooperating with component means for forming an induction region diminishes in volume when the piston approaches top dead center, forcing gases in the combustion chamber through a central region defined primarily by the radial slots through the baffle to the dispersing region in the recess portion of the piston, wherein the slots in the baffle are arranged in a star pattern with an open center, and,
• b) a fuel injection for injecting fuel into the combustion chamber.

A combustion system for internal combustion engines having a cylinder and at least one piston reciprocal in the cylinder comprising:

• a combustion chamber and a fuel injection system having a high pressure duel supply and a fuel injector arranged with the cylinder to inject fuel into the combustion chamber, the fuel injector having means for injecting fuel into the combustion chamber in staged cumulative pulses wherein the injection means comprises an injector with an internal needle valve and a plurality of fuel passages sequentially exposed on displacement of the needle valve, wherein the housing has a tip with at least one discharge orifice and fuel is directed from the fuel supply through the fuel passages and to the discharge orifice on displacement of the needle valve wherein the staged fuel injection pulses cumulatively add additional fuel on each pulsed stage of fuel increase and diminish fuel on each pulsed stage of fuel decrease.