It’s the same basic reason why a light bulb gets hot (especially older, filament-style bulbs) - they’re far less than 100% efficient at converting electricity to light, and the waste radiates out as heat.Ĭombustion engines have always been cooled in some way. This is also true for electric motors - so even larger electric motorcycles (like the Livewire) are liquid-cooled. That takes heat away from the liquid flowing through the radiator.Įngines are hot because they’re not 100% efficient at converting fuel to kinetic energy - they’re closer to about 30% efficient. The goal of engine coolant is to help transfer heat from the engine to the air outside, via the radiator.Īir blows through the radiator - or is impelled through by the radiator fans. Please enable JavaScript in your browser to submit the form What’s the Goal of Engine Coolant?
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