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. C25 Bus (280_, 290_)
2. J5 Bus (280P)
3. J5 Platform/Chassis (280L)
4. DUCATO Panorama (280_)
5. DUCATO Van (290_)
6. DUCATO Bus (230_)
7. DUCATO Van (230_)
8. DUCATO Van (280_)
9. DUCATO Panorama (290_)
10. DUCATO Platform/Chassis (290_)
11. 131
12. JUMPER Bus (230P)
13. RELAY Bus (230P)
14. JUMPER Van (230L)
15. RELAY Van (230L)
16. JUMPER Platform/Chassis (230)
17. RELAY Platform/Chassis (230)
18. BOXER Bus (230P)
19. BOXER Van (230L)
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The principle of the thermostat work

The classic MAGNETI MARELLI 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.