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. KUBISTAR Van (X76)
2. DUSTER (HS_)
3. SANDERO
4. LOGAN (LS_)
5. LOGAN MCV (KS_)
6. LOGAN EXPRESS (FS_)
7. LOGAN Pickup (US_)
8. LOGAN I (LS_)
9. TONDAR 90 I (LS_)
10. LOGAN I Estate (KS_)
11. TONDAR 90 I Estate (KS_)
12. THALIA II (LU_)
13. SYMBOL II (LU_)
14. CLIO II (BB_, CB_)
15. CLIO Mk II (BB_, CB_)
16. LUTECIA II (BB_, CB_)
17. CLIO MIO II (BB_, CB_)
18. THALIA I (LB_)
19. CLIO SYMBOL I (LB_)
20. CLIO I Saloon (LB_)
21. See more in applications

The principle of the thermostat work

The classic HOFFER 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.