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. CRESSIDA Saloon (_X3_)
2. CRESSIDA Saloon (_X6_)
3. CRESSIDA Saloon (MX62, _X6_)
4. JAZZ I (AA)
5. CITY I (AA)
6. FIT I (AA)
7. QUINTET (SU)
8. CIVIC I Hatchback (SB)
9. CIVIC � Hatchback (SB)
10. CIVIC II Hatchback (SS, SL)
11. CIVIC MK II Hatchback (SS, SL)
12. CIVIC I Saloon (SF)
13. BALLADE I Saloon (SF)
14. CIVIC � Saloon (SF)
15. CIVIC II Estate (WC)
16. CIVIC MK II Estate (WC)
17. ACCORD I (SJ, SY)
18. ACCORD I Saloon (SJ, SY)
19. ACCORD I Hatchback (SJ, SY)
20. ACCORD II Hatchback (AC, AD)
21. See more in applications

The principle of the thermostat work

The classic 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.