How does the engine thermostat regulate the engine temperature?

Question

Lexie Friedman

Engineering

29 March, 05:28

How does the engine thermostat regulate the engine temperature?

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Pamela Donovan · Answer 1

It's job is to block the flow of coolant to the radiator until the engine has warmed up. Once the engine reaches its operating temperature (generally about 200 degrees F, 95 degrees C), the thermostat opens. By letting the engine warm up as quickly as possible, the thermostat reduces engine wear, deposits and emissions.