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. KADETT B Coupe
2. KADETT C City
3. KADETT C
4. K 180 C
5. KADETT C Coupe
6. KADETT C Estate
7. ASCONA A (81_, 86_, 87_, 88_)
8. 1900 A (81_, 86_, 87_, 88_)
9. ASCONA B (81_, 86_, 87_, 88_)
10. ASCONA C Hatchback (J82)
11. ASCONA C (J82)
12. REKORD C
13. REKORD C Coupe
14. REKORD C Estate
15. REKORD D
16. REKORD D Coupe
17. REKORD D Estate
18. REKORD E (17_, 11_, 14_, 16_, 18_, 19_)
19. REKORD E Estate (61_, 66_, 67_)
20. SENATOR A (29_)
21. See more in applications

The principle of the thermostat work

The classic VALEO 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.