Thermostat, coolant - V24-99-1272 VEMO

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. GIULIETTA (940_)
2. MUSA (350_)
3. 9-3 Convertible (YS3F)
4. 9-3 (YS3F, E79, D79, D75)
5. 9-3 Saloon (YS3F, E79, D79, D75)
6. FREEMONT (345_)
7. FREEMONT SUV (345_)
8. IDEA (350_)
9. DELTA III (844_)
10. 9-3 Estate (E50)
11. DUCATO Bus (250_, 290_)
12. DUCATO Bus (250_, 290_, 560_)
13. DUCATO Van (250_, 290_)
14. DUCATO Platform/Chassis (250_, 290_)
15. BRAVO II (198_)
16. RITMO III (198_)
17. SX4 S-CROSS (JY)
18. S-CROSS (JY)
19. S-CROSS SUV (JY)
20. SX4 CROSSOVER (JY)
21. See more in applications

The principle of the thermostat work

The classic VEMO 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.