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. MAREA Weekend (185_)
2. BRAVO II (198_)
3. RITMO III (198_)
4. BRAVO I (182_)
5. MAREA (185_)
6. LYBRA (839_)
7. LYBRA SW (839_)
8. 156 (932_)
9. 156 Sportwagon (932_)
10. 166 (936_)
11. 166 Saloon (936_)
12. MULTIPLA (186_)
13. STILO (192_)
14. 147 (937_)
15. DOBLO MPV (119_, 223_)
16. THESIS (841_)
17. DOBLO Box Body/MPV (223_)
18. DOBLO MONOCAB (223_)
19. STILO Multi Wagon (192_)
20. BRAVA (182_)
21. 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.