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. ESCORT V (AAL, ABL)
2. ESCORT Mk VI (AAL, ABL)
3. DELTA I (831_)
4. DELTA � (831_)
5. DEDRA (835_)
6. DELTA II (836_)
7. DELTA Mk II (836_)
8. CROMA (154_)
9. TEMPRA (159_)
10. TEMPRA S.W. (159_)
11. TEMPRA SW (159_)
12. DEDRA SW (835_)
13. BLUEBIRD (910)
14. BLUEBIRD Saloon (910)
15. BLUEBIRD Traveller (W910)
16. BLUEBIRD (U11)
17. BLUEBIRD Saloon (U11)
18. BLUEBIRD Station Wagon (WU11)
19. BLUEBIRD Break (WU11)
20. BLUEBIRD (T72 , T12, U12)
21. See more in applications

The principle of the thermostat work

The classic MOTORAD 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.