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. FIESTA VI (CB1, CCN)
2. FIESTA VI Van
3. 206 Van
4. FIESTA V (JH_, JD_)
5. IKON V (JH_, JD_)
6. 206 Hatchback (2A/C)
7. C3 I (FC_, FN_)
8. 307 (3A/C)
9. FUSION (JU_)
10. 206 SW (2E/K)
11. 2 (DY)
12. DEMIO (DY)
13. C2 (JM_)
14. XSARA (N1)
15. XSARA Coupe (N0)
16. XSARA Break (N2)
17. XSARA Estate (N2)
18. C3 Pluriel (HB_)
19. 307 Break (3E)
20. 307 Estate (3E)
21. See more in applications

The principle of the thermostat work

The classic FAST 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.