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. 508 I (8D_)
2. 508 SW I (8E_)
3. SCUDO Van (270_, 272_)
4. SCUDO Bus (270_, 272_)
5. SCUDO MPV (270_, 272_)
6. MONDEO IV Turnier (BA7)
7. MONDEO IV (BA7)
8. GALAXY (WA6)
9. S-MAX (WA6)
10. EXPERT TEPEE (VF3X_)
11. FOCUS II Turnier (DA_, FFS, DS)
12. FOCUS II Station Wagon (DA_, FFS, DS)
13. FOCUS II (DA_, HCP, DP)
14. FOCUS C-MAX (DM2)
15. C-MAX (DM2)
16. SCUDO Platform/Chassis (270_, 272_)
17. PHEDRA (179_)
18. ULYSSE (179_)
19. 307 (3A/C)
20. 407 (6D_)
21. See more in applications

The principle of the thermostat work

The classic 3RG 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.