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. 207 Saloon
2. 207 PASSION Saloon
3. C3 II (SC_)
4. 207 (WA_, WC_)
5. 207/207+ (WA_, WC_)
6. C3 I (FC_, FN_)
7. C2 (JM_)
8. 1007 (KM_)
9. 207 SW (WK_)
10. 207 SW Estate (WK_)
11. NEMO Van (AA_)
12. FIORINO Box Body/MPV (225_)
13. QUBO (225_)
14. NEMO Estate
15. BIPPER TEPEE
16. 207 Hatchback Van (WA_, WC_)
17. C3 Pluriel (HB_)
18. 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.