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. RAV 4 I (_A1_)
2. RAV 4 � (_A1_)
3. ALMERA I Hatchback (N15)
4. PULSAR VI Hatchback (N15)
5. PULSAR I Hatchback (N15)
6. ALMERA � Hatchback (N15)
7. ALMERA I (N15)
8. PULSAR I Saloon (N15)
9. PULSAR I (N15)
10. SENTRA I (N15)
11. SABRE I (N15)
12. PICNIC (_XM1_)
13. IPSUM (_XM1_)
14. COROLLA Estate (_E11_)
15. COROLLA (_E11_)
16. COROLLA Saloon (_E11_)
17. COROLLA Compact (_E11_)
18. COROLLA Liftback (_E11_)
19. ATOS (MX)
20. ATOS (MX, IL44)
21. See more in applications

The principle of the thermostat work

The classic ASHIKA 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.