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. ASTRA G Hatchback (T98)
2. ASTRA G Saloon (T98)
3. ASTRA G Estate (T98)
4. CORSA C (X01)
5. VITA C (X01)
6. CORSA Mk II (C) (X01)
7. CORSAVAN Mk II (C) Hatchback Van (X01)
8. COMBO Box Body/MPV
9. CORSA C Hatchback Van (X01)
10. COMBO Tour
11. ASTRAVAN Mk IV (G) Estate Van (T98)
12. ASTRA G Estate Van (F70)
13. ASTRA G Delvan (F70)
14. See more in applications

The principle of the thermostat work

The classic BLUE PRINT 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.