What is the working principle of a thermostat?

[DiKaylee]

Working principle: The wax inside the thermostat controls the coolant circulation degree through the principle of thermal expansion and contraction. The following is a related introduction to the thermostat: 1. Meaning: The car thermostat refers to the valve that controls the flow path of the engine coolant. 2. Function: The thermostat automatically adjusts the amount of water entering the radiator according to the cooling water temperature to ensure that the engine works within a suitable temperature range, which can save energy consumption. 3. Impact: The thermostat must maintain a good working state, otherwise it will seriously affect the normal operation of the engine. If the main valve of the thermostat opens too late or even fails to open, it will cause the engine to overheat. If it opens too early, the engine preheating time will be prolonged, resulting in the engine temperature being too low.