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. MEGANE CC (EZ0/1_)
2. MICRA IV (K13_)
3. MARCH IV (K13_)
4. MARCH / MARCH ACTIVE IV (K13_)
5. MICRA IV (K13_, MK13K_)
6. QASHQAI / QASHQAI +2 I (J10, NJ10, JJ10E)
7. DUALIS I (J10, NJ10, JJ10E)
8. X-TRAIL (T30)
9. X-TRAIL SUV (T30)
10. PRIMERA (P12)
11. PRIMERA Estate (WP12)
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14. X-TRAIL SUV (T31)
15. CEFIRO III Saloon (A33)
16. MEGANE III Hatchback (BZ0/1_, B3_)
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19. MEGANE III Coupe (DZ0/1_)
20. SCENIC III (JZ0/1_)
21. See more in applications

The principle of the thermostat work

The classic BLUE PRINT 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.