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. TRANSPORTER II Bus
2. TRANSPORTER T2 Bus
3. TRANSPORTER Mk II Bus
4. TRANSPORTER III Bus
5. TRANSPORTER / CARAVELLE III Bus
6. VANAGON III Bus
7. TRANSPORTER T3 Bus
8. CARAVELLE III Bus
9. TRANSPORTER III Van
10. VANAGON III Van
11. TRANSPORTER T3 Van
12. 940 (944)
13. 940 Saloon (944)
14. 940 Kombi (945)
15. 940 Break (945)
16. 940 II (944)
17. 940 Mk II (944)
18. 940 II Estate (945)
19. 940 Mk II Estate (945)
20. TRANSPORTER II Van
21. See more in applications

The principle of the thermostat work

The classic MAHLE ORIGINAL 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.