Thermostat, coolant - 4.60669 DT Spare Parts

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. PULLMANN (W100)
2. PULLMANN Saloon (W100)
3. T2/L Van
4. T2/L Platform/Chassis
5. T2/LN1 Van
6. T2/LN1 Platform/Chassis
7. T2/LN1 Dump Truck
8. T2/LN1 Cab with engine
9. VARIO Platform/Chassis
10. VARIO Van
11. VARIO Dump Truck
12. VARIO Bus
13. VARIO Cab with engine
14. T2/L Dump Truck
15. LP
16. LK/LN2
17. NG
18. MK
19. SK
20. ACTROS
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The principle of the thermostat work

The classic DT Spare Parts 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.