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. HECKFLOSSE (W110)
2. /8 (W114)
3. /8 Saloon (W114)
4. /8 Coupe (W114)
5. /8 (W115)
6. /8 Saloon (W115)
7. S-CLASS (W108, W109)
8. S-CLASS Saloon (W108, W109)
9. T1 Bus (601)
10. T1 Platform/Chassis (601)
11. PULLMANN (W100)
12. PULLMANN Saloon (W100)
13. T2/L Van
14. T2/L Platform/Chassis
15. T2/L Municipal Vehicle
16. T2/L Dump Truck
17. T1 Van (601, 611)
18. See more in applications

The principle of the thermostat work

The classic CALORSTAT by Vernet 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.