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. TERRANO II (R20)
2. MISTRAL (R20)
3. MAGENTIS (MG)
4. MAGENTIS Saloon (MG)
5. OPTIMA (MG)
6. LOTZE (MG)
7. LOTZE / OPTIMA (MG)
8. CARENS III MPV (UN)
9. RONDO III MPV (UN)
10. CARENS II MPV (FJ)
11. CARENS Mk II MPV (FJ)
12. X-TREK II MPV (FJ)
13. SONATA V (NF)
14. SONATA V Saloon (NF)
15. SONICA V (NF)
16. EMBERA V (NF)
17. NF V (NF)
18. SPORTAGE (JE_, KM_)
19. SPORTAGE II (JE_, KM_)
20. See more in applications

The principle of the thermostat work

The classic JAPKO 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.