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. AVEO / KALOS Saloon (T250, T255)
2. AVEO / GENTRA Saloon (T250, T255)
3. AVEO Saloon (T250, T255)
4. LOVA Saloon (T250, T255)
5. KALOS Saloon (T250, T255)
6. AVEO / KALOS Hatchback (T250, T255)
7. AVEO U-VA Hatchback (T250, T255)
8. AVEO Hatchback (T250, T255)
9. JUSTY II (JMA, MS)
10. JUSTY Mk II (JMA, MS)
11. BALENO Estate (EG)
12. ESTEEM Estate (EG)
13. BALENO / ESTEEM Estate (EG)
14. VIVIO
15. JIMNY Closed Off-Road Vehicle (SN)
16. JIMNY Hardtop (SN)
17. JIMNY SIERRA Closed Off-Road Vehicle (SN)
18. CAPPUCCINO (EE)
19. PORTER Van
20. WAGON R+ Hatchback (MM)
21. See more in applications

The principle of the thermostat work

The classic JAPKO 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.