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. ACCENT I (X-3)
2. EXCEL I (X-3)
3. PONY I (X-3)
4. VERNA I (X-3)
5. ACCENT Saloon (X-3)
6. EXCEL Saloon (X-3)
7. PONY Saloon (X-3)
8. VERNA Saloon (X-3)
9. BIMANTARA CAKRA Saloon (X-3)
10. ACCENT I Saloon (X-3)
11. LANTRA II Estate (J-2)
12. ELANTRA II Estate (J-2)
13. LANTRA II Break (J-2)
14. LANTRA Mk II Estate (J-2)
15. LANTRA II (J-2)
16. LANTRA II Saloon (J-2)
17. ELANTRA II (J-2)
18. LANTRA Mk II (J-2)
19. AVANTE II (J-2)
20. 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.