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. AX (ZA-_)
2. 106 I (1A, 1C)
3. SAXO (S0, S1)
4. CHANSON (S0, S1)
5. 106 II (1A_, 1C_)
6. 304 (_04M_)
7. 100 / METRO Hatchback (XP)
8. XSARA (N1)
9. XSARA Break (N2)
10. XSARA Estate (N2)
11. MICRA II (K11)
12. MARCH II (K11)
13. VERITA II (K11)
14. 304 Break (_04D_)
15. 106 Van II Hatchback Van (1S_)
16. ZX (N2)
17. See more in applications

The principle of the thermostat work

The classic HOFFER 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.