Thermostat is a device for maintaining a static (constant) temperature, as its name implies. There are thermostats of different designs in many devices and mechanisms, from water heaters to refrigerators. There is also a thermostat in a car's internal combustion engine (liquid-cooled, of course). In a car, the thermostat regulates the temperature of the coolant (antifreeze): it accelerates the warm-up of a cold engine and provides heat removal from the hot one. Therefore, the engine works more efficiently and more comfortably for the driver, especially in winter - without a thermostat, the stove would usually blew cold air.

1. 4 RUNNER (_N1_)
2. SW4 (_N1_)
3. HILUX SURF (_N1_)
4. SURF (_N1_)
5. COROLLA Estate (_E11_)
6. IS I (_E1_)
7. IS SportCross (_E1_)
8. HILUX VI Pickup (_N1_)
9. TACOMA VI Pickup (_N1_)
10. HILUX MIGHTY X / HILUX TIGER VI Pickup (_N1_)
11. CALDINA Estate (_T19_)
12. COROLLA (_E11_)
13. COROLLA Saloon (_E11_)
14. COROLLA Liftback (_E11_)
15. CHASER (_X9_)
16. CORONA Saloon (_T21_)
17. CORONA PREMIO Saloon (_T21_)
18. CHASER (_X10_)
19. COROLLA Verso (_E11_)
20. COROLLA SPACIO Verso (_E11_)
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The principle of the thermostat work

The classic BLUE PRINT brand Thermostat, coolant is a movable valve that moves due to a change in the external environment - heating or cooling of antifreeze. The thermostat is made of a thermoelement filled with a substance resembling wax in structure - ceresin, with the addition of copper powder, graphite or aluminum for better thermal conductivity. At a certain temperature of the antifreeze, ceresin expands, opening the thermostat valve. When the motor cools down, ceresin contracts and the thermostat closes again.