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. LAND CRUISER PRADO (_J15_)
2. LAND CRUISER PRADO (_J12_)
3. HILUX VII Pickup (_N1_, _N2_, _N3_)
4. HILUX VIGO VII Pickup (_N1_, _N2_, _N3_)
5. FORTUNER (_N5_, _N6_)
6. SW4 (_N5_, _N6_)
7. HILUX SW4 (_N5_, _N6_)
8. HILUX Platform/Chassis (_N1_, _N2_)
9. HILUX VIII Pickup (_N1_)
10. HILUX REVO VIII Pickup (_N1_)
11. FORTUNER (_N15_, _N16_)
12. SW4 (_N15_, _N16_)
13. HILUX SW4 (_N15_, _N16_)
14. 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.