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. LANCER I (A7_)
2. LANCER I Saloon (A7_)
3. LANCER II (A17_)
4. LANCER II Saloon (A17_)
5. LANCER � (A17_)
6. SAPPORO I (A12_)
7. SAPPORO � (A12_)
8. SAPPORO II (A16_A)
9. SAPPORO Mk II (A16_A)
10. CORDIA (A21_A, AB, AC)
11. CORDIA (A21_A, AA, AB, AC)
12. CUORE III (L201)
13. MIRA III (L200, L201)
14. MIRA III (L201)
15. WILDCAT/ROCKY (F75)
16. WILDCAT/ROCKY (F70)
17. LJ80 (OL)
18. SAMURAI Closed Off-Road Vehicle (SJ_)
19. SIERRA Closed Off-Road Vehicle (SJ_)
20. SAMURAI SUV (SJ_)
21. See more in applications

The principle of the thermostat work

The classic MAGNETI MARELLI 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.