Liquid and/or gaseous fuel delivery system and methods thereof

A system for an engine, comprising:

• a pre-chamber system that includes a pre-chamber fuel injector, a spark plug, a pre-chamber and an air injector each included within a pre-chamber housing;
• an air injector control valve for regulating a supply of air to the air injector;
• a main chamber that includes at least a piston and an associated main chamber fuel injector, the main chamber fluidically coupled to the pre-chamber housing by one or more pre-chamber orifices;
• and
• a controller with computer readable instructions stored on non-transitory memory that when executed, cause the controller to:
• responsive to determining that conditions for pressurizing the pre-chamber housing are met, with the piston undergoing reciprocating motion, inject an air flow to the pre-chamber system at a position between a tip of the pre-chamber fuel injector and the main chamber by controlling a duty cycle of the air injector control valve to pressurize the pre-chamber housing.