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. MATIZ (M200, M250)
2. SPARK (M200, M250)
3. SPARK LITE (M200, M250)
4. CHARADE I (G10)
5. CHARADE � (G10)
6. CHARADE II (G11, G30)
7. CHARADE Mk II (G11, G30)
8. CHARADE III (G100, G101, G102)
9. CHARADE Mk III (G100, G101, G102)
10. JUSTY I (KAD)
11. JUSTY � (KAD)
12. LIBERO Bus (E10, E12)
13. VANILLE Bus (E10, E12)
14. SUMO Bus (E10, E12)
15. ALTO (0S)
16. ALTO Hatchback
17. ALTO Van
18. FRONTE Hatchback
19. SWIFT I (AA)
20. CULTUS I (AA)
21. See more in applications

The principle of the thermostat work

The classic BorgWarner (Wahler) 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.