Thermostat, coolant - 3478.82D BorgWarner (Wahler)

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 (_X6_)
2. CRESSIDA Saloon (MX62, _X6_)
3. CAMRY (_V1_)
4. CAMRY Saloon (_V1_)
5. SCEPTER (_V1_)
6. CAMRY Estate (_V1_)
7. SCEPTER Estate (_V1_)
8. CARINA E Saloon (_T19_)
9. CARINA E (_T19_)
10. CARINA E Liftback (_T19_)
11. CARINA E Sportswagon (_T19_)
12. CELICA Coupe (_T20_)
13. RAV 4 I (_A1_)
14. RAV 4 � (_A1_)
15. SUNNY III Traveller (Y10)
16. TSUBAME III Traveller (Y10)
17. SUNNY III Break (Y10)
18. SUNNY Mk III Traveller (Y10)
19. SENTRA / TSUBAME III Traveller (Y10)
20. PRIMERA (P10)
21. See more in applications

The principle of the thermostat work

The classic BorgWarner (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.