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. 140 (142, 144)
2. 140 Saloon (142, 144)
3. 66 (31, 36)
4. 66 Saloon (31, 36)
5. DISCOVERY I (LJ)
6. TERRANO I (WD21)
7. PATHFINDER I (WD21)
8. TERRANO � (WD21)
9. MAVERICK (UDS, UNS)
10. DEFENDER Cabrio (L316)
11. P 121
12. P 121 Saloon
13. P 122 S AMAZON
14. P 122 S AMAZON Saloon
15. 66 Estate (64)
16. 140 Estate (145)
17. 164 (164)
18. 164 Saloon (164)
19. P 1800 (P18)
20. PICK UP (D21)
21. See more in applications

The principle of the thermostat work

The classic MOTORAD 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.