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. STREETWISE Hatchback
2. SIERRA Hatchback (GBC, GBG)
3. SIERRA (GBG, GB4)
4. SCORPIO I (GAE, GGE)
5. GRANADA Mk III� (GAE, GGE)
6. GRANADA I (GAE, GGE)
7. SCORPIO I Saloon (GGE)
8. GRANADA Mk III� Saloon (GGE)
9. GRANADA Mk III Saloon (GGE)
10. SIERRA Turnier (BNG)
11. SCORPIO I Turnier (GGE)
12. SCORPIO I Break (GGE)
13. GRANADA Mk III� Turnier (GGE)
14. GRANADA Mk III Turnier (GGE)
15. GRANADA I Turnier (GGE)
16. 200 Hatchback (XW)
17. 200 Convertible (XW)
18. 400 (XW)
19. 100 / METRO Hatchback (XP)
20. 100 Convertible (XP)
21. See more in applications

The principle of the thermostat work

The classic DENSO 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.