The publication recognized the 2018 Challenger Demon’s Power Chiller for its performance-enhancing properties. Indeed, the Power Chiller does pretty cool things (pun intended).
A dedicated liquid circuit, separate from the engine cooling circuit, in the cooling system, receives diverted refrigerant from the air conditioning unit. Normally, all of the chilled refrigerant would find a use for the cabin, but instead, the Power Chiller stores it for a later use.
From there, supercharger coolant enters a low-temperature radiator before heading to the supercharger. However, it makes a pit-stop at the Power Chiller, where it’s cooled even more. The chilled liquid then flows through heat exchanger units in the supercharger housing, cooling compressed air as it enters the intake ports. Of course, cooler air is better than warm; with more oxygen entering the engine, adding more fuel produces more power.
It’s just a small part of the puzzle that allows the 2018 Challenger Demon to make 840 horsepower on 100+ octane fuel.