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. SANTA FE I (SM)
2. SONATA IV (EF)
3. SONATA IV Saloon (EF)
4. SONATA Mk III (EF)
5. SONICA IV (EF)
6. MAGENTIS (GD, MS)
7. OPTIMA Saloon (GD, MS)
8. OPTIMA / MAGENTIS (GD, MS)
9. OPTIMA (GD, MS)
10. OPTIMA / REGAL (GD, MS)
11. SORENTO I (JC)
12. TUCSON (JM)
13. JM (JM)
14. TUCSON I (JM)
15. SPORTAGE (JE_, KM_)
16. SPORTAGE II (JE_, KM_)
17. See more in applications

The principle of the thermostat work

The classic TOPRAN 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.