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. C4 II (B7)
2. DS3
3. MINI (R56)
4. MINI ESPORTIVO (R56)
5. C4 PICASSO I MPV (UD_)
6. MINI Coupe (R58)
7. MINI Roadster (R59)
8. MINI Convertible (R57)
9. MINI COUNTRYMAN (R60)
10. MINI COUNTRYMAN / COOPER COUNTRYMAN (R60)
11. CROSSOVER (R60)
12. COUNTRYMAN (R60)
13. 207 (WA_, WC_)
14. 207/207+ (WA_, WC_)
15. 207 CC (WD_)
16. 308 I (4A_, 4C_)
17. MINI CLUBMAN (R55)
18. MINI CLUBMAN Estate (R55)
19. CLUBMAN (R55)
20. 308 SW I (4E_, 4H_)
21. See more in applications

The principle of the thermostat work

The classic FACET 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.