Systems and methods for limiting a duty cycle of an internal combustion engine in a series hybrid powertrain for improved turbocharger efficiency

A system for limiting a duty cycle of an engine, comprising:

• a controller structured to:
• receive data indicative of a state of charge from a battery coupled to the engine;
• determine whether the state of charge is at or below a high predefined threshold;
• in response to determining that the state of charge is above the high predefined threshold, module control of the engine and a timer coupled to the engine;
• in response to determining that the state of charge is at or below the high predefined threshold, determine whether the state of charge is above a low predefined threshold;
• and
• in response to determining that the state of charge is at or below the low predefined threshold, modulate control of the engine and the timer.

A method, comprising:

• receiving data indicative of a state of charge from a battery coupled to an engine;
• determining whether the state of charge is at or below a high predefined threshold;
• in response to determining that the state of charge is above the high predefined threshold, modulating control of the engine and a timer coupled to the engine;
• in response to determining that the state of charge is at or below the high predefined threshold, determining whether the state of charge is above a low predefined threshold;
• and
• in response to determining that the state of charge is at or below the low predefined threshold, modulating control of the engine and the timer.