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. SPACE STAR MPV (DG_A)
2. AVENSIS Saloon (_T25_)
3. AVENSIS Estate (_T25_)
4. AVENSIS (_T25_)
5. LANCER VII (CS_A, CT_A)
6. LANCER VII (CS_A, CG, CH, CJ, CT_A)
7. CEDIA VII (CS_A, CT_A)
8. LANCER VII Estate (CS_W, CT_W)
9. LANCER VII Estate (CS_W, CT_W, CH)
10. See more in applications

The principle of the thermostat work

The classic DAYCO 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.