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. XM (Y3)
2. XM Break (Y3)
3. XM Estate (Y3)
4. 605 (6B)
5. 605 Saloon (6B)
6. XANTIA (X1_, X2_)
7. 406 (8B)
8. 406 Saloon (8B)
9. XANTIA Break (X1_, X2_)
10. XANTIA Estate (X1_, X2_)
11. 406 Break (8E/F)
12. 406 Estate (8E/F)
13. XM (Y4)
14. XM Break (Y4)
15. XM Estate (Y4)
16. See more in applications

The principle of the thermostat work

The classic SASIC 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.