Methods and systems for a vehicle cooling system

A vehicle method, comprising:

• operating a vehicle cooling system in a first mode with each of active grille shutters on a vehicle body and vents on an insulated engine enclosure closed, each of a first and a second coolant pump operating at a lower speed, and a radiator fan disabled;
• operating the vehicle cooling system in a second mode with the active grille shutters closed, the vents open, the first coolant pump operating at the lower speed, the second coolant pump operating at a higher speed, and the radiator fan actuated to a higher speed;
• operating the vehicle cooling system in a third mode with each of the active grille shutters and the vents open, each of the first and second coolant pumps operating at the lower speed, and the radiator fan disabled;
• operating the vehicle cooling system in a fourth mode with the active grille shutters open, the vents closed, each of the first and second coolant pumps operating at the lower speed, and the radiator fan disabled;
• and
• operating the vehicle cooling system in a fifth mode with the active grille shutters open, the vents closed, each of the first and second coolant pumps at the lower speed, and the radiator fan actuated to a lower speed, wherein the first coolant pump is a lower temperature cooling circuit coolant pump, and the second coolant pump is a higher temperature cooling circuit coolant pump.

A vehicle system, comprising:

• a powertrain including an engine and a transmission coupled to vehicle wheels;
• active grille shutters at a front end of the vehicle system;
• an insulated enclosure enclosing the engine, the enclosure including a plurality of vents on opposite walls;
• a turbocharger including an intake compressor and an exhaust turbine;
• a charge air cooler (CAC) coupled downstream of the compressor;
• a cooling system including a lower temperature coolant loop and a higher temperature coolant loop, the lower temperature coolant loop including a first coolant pump and a first radiator, the higher temperature coolant loop including a second coolant pump, a second radiator, and a radiator fan;
• and
• a controller with computer-readable instructions stored on non-transitory memory for:
• estimating a cooling demand for each of the engine and the transmission;
• initially selecting a plurality of operating modes of the cooling system that meets the cooling demand, wherein each of the initially selected plurality of operating modes has a different setting for components of the cooling system;
• comparing energy usage for each of the initially selected plurality of operating modes;
• and
• further selecting one of the initially selected plurality of operating modes having minimum energy usage.