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. COROLLA Hatchback (_E7_)
2. T-18 Hatchback (_E7_, T18)
3. COROLLA Liftback (_E7_)
4. COROLLA Estate (_E7_)
5. 121 I (DA)
6. CORONA Hatchback (_T13_)
7. CRESSIDA Saloon (_X3_)
8. 323 II Hatchback (BD)
9. 323 MK IV Hatchback (BD)
10. 323 Mk II Hatchback (BD)
11. FAMILIA II Hatchback (BD)
12. FAMILIA V Hatchback (BD)
13. 323 II (BD)
14. 323 II Saloon (BD)
15. GLC II (BD)
16. 323 Mk II (BD)
17. FAMILIA II (BD)
18. FAMILIA V (BD)
19. CRESSIDA Saloon (_X6_)
20. CRESSIDA Saloon (MX62, _X6_)
21. See more in applications

The principle of the thermostat work

The classic ERA 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.