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. DUCATO Platform/Chassis (280_)
2. DUCATO Panorama (280_)
3. DUCATO Van (290_)
4. DUCATO Bus (230_)
5. DUCATO Van (230_)
6. DUCATO Van (280_)
7. DUCATO Panorama (290_)
8. DUCATO Platform/Chassis (290_)
9. JUMPER Platform/Chassis (230)
10. RELAY Platform/Chassis (230)
11. BOXER Bus (230P)
12. BOXER Van (230L)
13. BOXER FURGON Van (230L)
14. BOXER Platform/Chassis (ZCT_)
15. DUCATO Platform/Chassis (230_)
16. JUMPER Bus (230P)
17. RELAY Bus (230P)
18. JUMPER Van (230L)
19. RELAY Van (230L)
20. BOXER Bus (244, Z_)
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The principle of the thermostat work

The classic WAHLER 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.