What is a car thermostat
Automobile thermostat is an important part of the automobile air conditioning system and cooling system, its main role is to regulate and control the temperature to ensure that the engine and the cockpit temperature is kept in the best condition.
Air conditioning thermostat
The air conditioning thermostat mainly controls the temperature of the automobile air conditioning system, and adjusts the start and stop of the compressor by sensing the surface temperature of the evaporator. When the temperature inside the car reaches a preset value, the thermostat will start the compressor to ensure that the air flows smoothly through the evaporator to avoid frost; When the temperature drops, the thermostat will shut down the compressor in time to keep the temperature in the car balanced . The air conditioning thermostat is usually placed on the cold air control panel in or near the evaporation box .
Cooling system thermostat
The thermostat in the cooling system (often called a thermostat) controls the flow path of the coolant, ensuring that the engine is operating at an optimal temperature. When the engine is cold started, the thermostat closes the coolant flow channel to the radiator, so that the coolant flows directly into the engine cylinder block or cylinder head water jacket through the inlet of the water pump, and the temperature rises rapidly. When the coolant temperature reaches the specified value, the thermostat opens, and the coolant flows back to the engine through the radiator and the thermostat valve for a large cycle . The thermostat is generally installed at the intersection of the engine exhaust pipe, and common types include paraffin and electronically controlled .
Working principle and type
Thermostats work based on physical changes caused by changes in temperature. Air conditioning thermostats usually have bellows, bimetal and thermistor types, each type has its own unique principles and application scenarios. For example, bellows type thermostats use temperature changes to drive the bellows and control the start and stop of the compressor via springs and contacts . The thermostat in the cooling system uses the expansion and contraction characteristics of paraffin to control the flow of coolant .
significance
The thermostat plays a crucial role in a car.
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