Systems and methods for in-cylinder fuel dosing for exhaust aftertreatment system thermal management

A system, comprising:

• an engine system including:
• a combustion cylinder defining a combustion chamber, an intake port, and an exhaust port;
• a fuel injector structured to selectively inject fuel into the combustion chamber;
• an intake valve structured to selectively open the intake port to facilitate drawing air into the combustion chamber through the intake port;
• an exhaust valve structured to selectively open the exhaust port to facilitate expelling exhaust from the combustion chamber to an exhaust aftertreatment system through the exhaust port;
• and
• a piston slidably received within the combustion cylinder;
• a sensor structured to acquire data indicative of a crank angle of the piston, the crank angle indicating at least one of a current stroke and a current position of the piston within the combustion chamber, the current stroke including one of an intake stroke, a compression stroke, a power stroke, and an exhaust stroke;
• and
• a controller structured to:
• monitor the crank angle of the piston;
• determine that the crank angle is within a target angle range, the target angle range being during a transition period between the exhaust stroke and the intake stroke;
• and
• provide a command to the fuel injector to inject the fuel into the combustion chamber while the crank angle is within the target angle range such that at least a portion of the fuel escapes from the combustion chamber through the exhaust port.