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. XSARA PICASSO (N68)
2. ZETA (22_)
3. EVASION MPV (22, U6)
4. SYNERGIE MPV (22, U6)
5. XSARA (N1)
6. XSARA Break (N2)
7. XSARA Estate (N2)
8. XSARA Coupe (N0)
9. C5 I (DC_)
10. ULYSSE (220_)
11. C5 I Break (DE_)
12. C5 I Estate (DE_)
13. C8 (EA_, EB_)
14. PHEDRA (179_)
15. ULYSSE (179_)
16. C4 I (LC_)
17. C4 Coupe (LA_)
18. C5 II (RC_)
19. C5 II Break (RE_)
20. C4 PICASSO I MPV (UD_)
21. See more in applications

The principle of the thermostat work

The classic ABAKUS 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.