Thermostat, coolant - TM 57 105 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. C4 II (B7)
2. MINI Roadster (R59)
3. DS3
4. MINI COUNTRYMAN (R60)
5. MINI COUNTRYMAN / COOPER COUNTRYMAN (R60)
6. CROSSOVER (R60)
7. COUNTRYMAN (R60)
8. C4 PICASSO I MPV (UD_)
9. C4 GRAND PICASSO I (UA_)
10. MINI Coupe (R58)
11. MINI CLUBMAN (R55)
12. MINI CLUBMAN Estate (R55)
13. CLUBMAN (R55)
14. 207 (WA_, WC_)
15. 207/207+ (WA_, WC_)
16. MINI (R56)
17. MINI ESPORTIVO (R56)
18. 207 CC (WD_)
19. 308 I (4A_, 4C_)
20. 308 SW I (4E_, 4H_)
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.