Thermostat, coolant - TI 251 88D MAHLE ORIGINAL

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. NEMO Van (AA_)
2. NEMO Estate
3. BIPPER TEPEE
4. BIPPER (AA_)
5. YPSILON (312_)
6. PUNTO Hatchback Van (199_)
7. 500L (351_, 352_)
8. 500X (334_)
9. PANDA VAN (312_, 519_)
10. PANDA (312_, 319_)
11. FIORINO Box Body/MPV (225_)
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13. TIPO Saloon (356_)
14. EGEA Saloon (356_)
15. TIPO Hatchback (356_)
16. EGEA Hatchback (356_)
17. TIPO Estate (356_)
18. EGEA Estate (356_)
19. DOBLO Platform/Chassis (263_)
20. PRATICO Platform/Chassis (263_)
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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.